/* Modern Landing Page Styles for Signova */


/* ===== Variables ===== */

:root {
    /* Colors */
    --primary: #4361ee;
    --primary-dark: #3a56d4;
    --primary-light: #4f70ff;
    --secondary: #ff6b6b;
    --secondary-dark: #e55c5c;
    --secondary-light: #ff7a7a;
    --accent: #4cc9f0;
    --accent-dark: #3ab7dc;
    --accent-light: #5fd4fa;
    --dark: #2b2d42;
    --dark-alt: #3d3f56;
    --gray: #8d99ae;
    --light-gray: #edf2f4;
    --white: #ffffff;
    --success: #2ecc71;
    --warning: #f39c12;
    --error: #e74c3c;
    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
    --font-size-xs: 0.75rem;
    /* 12px */
    --font-size-sm: 0.875rem;
    /* 14px */
    --font-size-base: 1rem;
    /* 16px */
    --font-size-md: 1.125rem;
    /* 18px */
    --font-size-lg: 1.25rem;
    /* 20px */
    --font-size-xl: 1.5rem;
    /* 24px */
    --font-size-2xl: 1.875rem;
    /* 30px */
    --font-size-3xl: 2.25rem;
    /* 36px */
    --font-size-4xl: 3rem;
    /* 48px */
    --font-size-5xl: 3.75rem;
    /* 60px */
    /* Spacing */
    --spacing-xs: 0.25rem;
    /* 4px */
    --spacing-sm: 0.5rem;
    /* 8px */
    --spacing-md: 1rem;
    /* 16px */
    --spacing-lg: 1.5rem;
    /* 24px */
    --spacing-xl: 2rem;
    /* 32px */
    --spacing-2xl: 3rem;
    /* 48px */
    --spacing-3xl: 4rem;
    /* 64px */
    /* Borders */
    --border-radius-sm: 0.25rem;
    /* 4px */
    --border-radius-md: 0.5rem;
    /* 8px */
    --border-radius-lg: 1rem;
    /* 16px */
    --border-radius-xl: 2rem;
    /* 32px */
    --border-radius-full: 9999px;
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;
    /* Z-index layers */
    --z-negative: -1;
    --z-elevate: 1;
    --z-dropdown: 10;
    --z-sticky: 100;
    --z-drawer: 200;
    --z-modal: 300;
    --z-popover: 400;
    --z-tooltip: 500;
    --z-toast: 600;
    --z-chatbot: 700;
    /* Container widths */
    --container-sm: 640px;
    --container-md: 768px;
    --container-lg: 1024px;
    --container-xl: 1280px;
}


/* ===== Reset & Base Styles ===== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-primary);
    color: var(--dark);
    line-height: 1.6;
    overflow-x: hidden;
    background-color: var(--white);
}

a {
    text-decoration: none;
    color: var(--primary);
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

ul,
ol {
    list-style: none;
}

img,
video {
    max-width: 100%;
    height: auto;
}

button,
input,
select,
textarea {
    font-family: inherit;
    font-size: inherit;
}


/* ===== Layout & Container ===== */

.container {
    width: 100%;
    max-width: var(--container-xl);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.content-section {
    padding: var(--spacing-3xl) 0;
    position: relative;
}


/* ===== Typography ===== */

h1,
h2,
h3,
h4,
h5,
h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: var(--font-size-4xl);
}

h2 {
    font-size: var(--font-size-3xl);
}

h3 {
    font-size: var(--font-size-2xl);
}

h4 {
    font-size: var(--font-size-xl);
}

h5 {
    font-size: var(--font-size-lg);
}

h6 {
    font-size: var(--font-size-md);
}

p {
    margin-bottom: var(--spacing-md);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: var(--primary);
    margin: var(--spacing-md) auto 0;
    border-radius: var(--border-radius-full);
}

.section-subtitle {
    text-align: center;
    color: var(--gray);
    font-size: var(--font-size-lg);
    margin-top: calc(-1 * var(--spacing-xl));
    margin-bottom: var(--spacing-xl);
}


/* ===== Buttons ===== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: none;
    outline: none;
    text-align: center;
    white-space: nowrap;
}

.btn i {
    margin-right: var(--spacing-sm);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-md);
}

.btn-sm {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn-primary {
    background-color: var(--primary);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--secondary);
    color: var(--white);
}

.btn-secondary:hover {
    background-color: var(--secondary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-accent {
    background-color: var(--accent);
    color: var(--white);
}

.btn-accent:hover {
    background-color: var(--accent-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline:hover {
    background-color: var(--primary);
    color: var(--white);
    transform: translateY(-2px);
}

.btn-text {
    background-color: transparent;
    color: var(--primary);
    padding: var(--spacing-xs) var(--spacing-sm);
}

.btn-text:hover {
    background-color: rgba(67, 97, 238, 0.1);
    color: var(--primary-dark);
}

.btn-social {
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex: 1;
}

.btn-google {
    background-color: #DB4437;
    color: var(--white);
}

.btn-facebook {
    background-color: #4267B2;
    color: var(--white);
}


/* ===== Header & Navigation ===== */

#main-header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: var(--z-sticky);
    background-color: rgba(255, 255, 255, 0.95);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

#main-header.scrolled {
    box-shadow: var(--shadow-md);
}

#main-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
}

.logo-container {
    display: flex;
    align-items: center;
}

.logo {
    height: 40px;
    margin-right: var(--spacing-sm);
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--primary);
}

#main-nav ul {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
}

.nav-link {
    color: var(--dark);
    font-weight: 500;
    position: relative;
    padding: var(--spacing-xs) 0;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: width var(--transition-normal);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 100%;
}

.nav-link.active {
    color: var(--primary);
}

.mobile-menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 24px;
    position: relative;
    z-index: var(--z-dropdown);
}

.mobile-menu-toggle span {
    display: block;
    width: 100%;
    height: 3px;
    background-color: var(--dark);
    margin: 5px 0;
    transition: all var(--transition-fast);
    border-radius: var(--border-radius-full);
}


/* ===== Hero Section ===== */

.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    background: linear-gradient(135deg, rgba(79, 112, 255, 0.1) 0%, rgba(76, 201, 240, 0.1) 100%);
    position: relative;
    overflow: hidden;
}


/* Impact Section */

.impact-section {
    margin-top: var(--spacing-2xl);
    padding: var(--spacing-lg);
    background-color: rgba(255, 255, 255, 0.9);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.impact-section h2 {
    font-size: var(--font-size-xl);
    color: var(--primary);
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.impact-section ul {
    list-style-type: none;
    padding-left: var(--spacing-md);
}

.impact-section li {
    margin-bottom: var(--spacing-sm);
    position: relative;
    padding-left: var(--spacing-lg);
}

.impact-section li:before {
    content: '•';
    color: var(--secondary);
    font-size: var(--font-size-xl);
    position: absolute;
    left: 0;
    top: -2px;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="20" height="20" viewBox="0 0 20 20"><circle cx="1" cy="1" r="1" fill="%234361ee" opacity="0.1"/></svg>');
    background-size: 40px 40px;
    z-index: var(--z-negative);
}

.headline {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    line-height: 1.1;
    background: linear-gradient(90deg, var(--primary) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-emphasis-color: transparent;
}

.subheadline {
    font-size: var(--font-size-xl);
    color: var(--gray);
    max-width: 700px;
    margin-bottom: var(--spacing-xl);
}

.animated-quote {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    font-style: italic;
    color: var(--dark-alt);
    font-size: var(--font-size-lg);
    opacity: 0.8;
}

.animated-quote i {
    color: var(--primary);
    margin: 0 var(--spacing-sm);
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    animation: bounce 2s infinite;
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid var(--primary);
    border-radius: var(--border-radius-xl);
    position: relative;
    margin-bottom: var(--spacing-sm);
}

.wheel {
    width: 6px;
    height: 6px;
    background-color: var(--primary);
    border-radius: 50%;
    position: absolute;
    top: 10px;
    left: 50%;
    transform: translateX(-50%);
    animation: wheel 1.5s infinite;
}

.arrows {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.arrows span {
    display: block;
    width: 10px;
    height: 10px;
    border-bottom: 2px solid var(--primary);
    border-right: 2px solid var(--primary);
    transform: rotate(45deg);
    margin: -5px 0;
    animation: arrow 1.5s infinite;
}

.arrows span:nth-child(2) {
    animation-delay: 0.2s;
}

.arrows span:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes bounce {
    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateY(0) translateX(-50%);
    }
    40% {
        transform: translateY(-20px) translateX(-50%);
    }
    60% {
        transform: translateY(-10px) translateX(-50%);
    }
}

@keyframes wheel {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(15px);
    }
}

@keyframes arrow {
    0% {
        opacity: 0;
        transform: rotate(45deg) translate(-5px, -5px);
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: rotate(45deg) translate(5px, 5px);
    }
}


/* ===== Content Sections ===== */


/* A World Without Barriers Section */

.parallax-section {
    position: relative;
    overflow: hidden;
}

.parallax-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../images/barriers-bg.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    opacity: 0.1;
    z-index: var(--z-negative);
}

.section-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
}

.hidden-content {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: all var(--transition-normal);
}

.section-content.expanded .hidden-content {
    max-height: 1000px;
    opacity: 1;
    margin-bottom: var(--spacing-md);
}

#read-more-btn {
    display: flex;
    align-items: center;
    margin: 0 auto;
}

#read-more-btn i {
    margin-left: var(--spacing-xs);
    transition: transform var(--transition-normal);
}

.section-content.expanded #read-more-btn i {
    transform: rotate(180deg);
}

.read-less-text {
    display: none;
}

.section-content.expanded .read-more-text {
    display: none;
}

.section-content.expanded .read-less-text {
    display: inline;
}


/* What We Do Section */

.feature-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.feature-card {
    background-color: var(--white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
    z-index: var(--z-elevate);
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.card-icon {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    background-color: rgba(67, 97, 238, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
}

.card-icon i {
    font-size: var(--font-size-2xl);
    color: var(--primary);
}

.feature-card h3 {
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-lg);
}

.feature-card p {
    color: var(--gray);
    margin-bottom: 0;
}

.card-hover {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
    z-index: 1;
    padding: var(--spacing-lg);
}

.feature-card:hover .card-hover {
    opacity: 0.95;
}

.hover-content {
    color: var(--white);
    text-align: center;
}

.feature-video {
    width: 100%;
    max-width: 200px;
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-md);
}


/* How It Works Section */

.steps-container {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.step {
    flex: 1;
    min-width: 200px;
    background-color: var(--white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: all var(--transition-normal);
}

.step:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.step-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background-color: rgba(67, 97, 238, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
}

.step-icon i {
    font-size: var(--font-size-2xl);
    color: var(--primary);
}

.step-arrow {
    color: var(--primary);
    font-size: var(--font-size-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-demo-btn {
    margin-top: var(--spacing-md);
}


/* Social Impact Section */

.testimonial-slider {
    position: relative;
    max-width: 900px;
    margin: 0 auto var(--spacing-xl);
    overflow: hidden;
}

.testimonial-track {
    display: flex;
    transition: transform var(--transition-normal);
}

.testimonial {
    flex: 0 0 100%;
    padding: var(--spacing-lg);
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.testimonial-image {
    flex: 0 0 150px;
    position: relative;
}

.testimonial-image img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--primary);
}

.audio-play-btn {
    position: absolute;
    bottom: 0;
    right: 0;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--primary);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: all var(--transition-fast);
}

.audio-play-btn:hover {
    background-color: var(--primary-dark);
    transform: scale(1.1);
}

.testimonial-content {
    flex: 1;
}

.testimonial-content p {
    font-size: var(--font-size-lg);
    font-style: italic;
    margin-bottom: var(--spacing-md);
    position: relative;
}

.testimonial-content p::before,
.testimonial-content p::after {
    content: '"';
    color: var(--primary);
    font-size: var(--font-size-3xl);
    font-weight: 700;
}

.testimonial-author {
    font-weight: 600;
    color: var(--primary);
}

.slider-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: var(--spacing-lg);
}

.slider-arrow {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: var(--white);
    color: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.slider-arrow:hover {
    background-color: var(--primary);
    color: var(--white);
}

.slider-dots {
    display: flex;
    gap: var(--spacing-sm);
    margin: 0 var(--spacing-md);
}

.slider-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--light-gray);
    border: 1px solid var(--primary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.slider-dot.active {
    background-color: var(--primary);
    transform: scale(1.2);
}

.more-stories-container {
    text-align: center;
}

.additional-stories {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: all var(--transition-normal);
}

.additional-stories.expanded {
    max-height: 1000px;
    opacity: 1;
}

.story {
    background-color: var(--white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    text-align: left;
}

.story h3 {
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-lg);
}


/* Learning Hub Section */

.learning-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.flashcards-container,
.daily-challenge,
.video-tutorials {
    background-color: var(--white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

.flashcard {
    width: 100%;
    height: 200px;
    perspective: 1000px;
    margin: var(--spacing-lg) 0;
}

.flashcard-inner {
    position: relative;
    width: 100%;
    height: 100%;
    text-align: center;
    transition: transform 0.8s;
    transform-style: preserve-3d;
    cursor: pointer;
}

.flashcard:hover .flashcard-inner {
    transform: rotateY(180deg);
}

.flashcard-front,
.flashcard-back {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-md);
}

.flashcard-front {
    background-color: var(--light-gray);
    color: var(--dark);
    border: 2px solid var(--primary);
}

.flashcard-back {
    background-color: var(--primary);
    color: var(--white);
    transform: rotateY(180deg);
    padding: var(--spacing-md);
}

.flashcard-back video {
    max-width: 100%;
    max-height: 120px;
    margin-bottom: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
}

.challenge-container {
    margin-top: var(--spacing-lg);
}

.challenge-result {
    margin-top: var(--spacing-lg);
    display: none;
}

.challenge-result.active {
    display: block;
    animation: fadeIn var(--transition-normal);
}

.challenge-word {
    color: var(--primary);
    margin-bottom: var(--spacing-sm);
}

#challenge-video {
    width: 100%;
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-sm);
}

.video-player {
    margin-bottom: var(--spacing-lg);
}

#tutorial-video {
    width: 100%;
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-sm);
    background-color: var(--light-gray);
}

.video-playlist {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.playlist-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.playlist-item:hover {
    background-color: var(--light-gray);
}

.playlist-item.active {
    background-color: rgba(67, 97, 238, 0.1);
}

.playlist-thumbnail {
    position: relative;
    flex: 0 0 80px;
}

.playlist-thumbnail img {
    width: 80px;
    height: 45px;
    object-fit: cover;
    border-radius: var(--border-radius-sm);
}

.video-duration {
    position: absolute;
    bottom: 5px;
    right: 5px;
    background-color: rgba(0, 0, 0, 0.7);
    color: var(--white);
    font-size: var(--font-size-xs);
    padding: 2px 4px;
    border-radius: var(--border-radius-sm);
}

.playlist-info {
    flex: 1;
}

.playlist-info h5 {
    margin-bottom: 0;
    font-size: var(--font-size-sm);
}

.playlist-info p {
    margin-bottom: 0;
    font-size: var(--font-size-xs);
    color: var(--gray);
}


/* Future Roadmap Section */

.timeline-container {
    max-width: 1000px;
    margin: 0 auto;
    padding: var(--spacing-xl) 0;
    position: relative;
}

.timeline {
    position: relative;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 100%;
    background-color: var(--primary);
    border-radius: var(--border-radius-full);
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-3xl);
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-item::before {
    content: attr(data-year);
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--primary);
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--border-radius-full);
    font-weight: 600;
    z-index: 1;
}

.timeline-content {
    position: relative;
    width: 45%;
    padding: var(--spacing-lg);
    background-color: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.timeline-item:nth-child(odd) .timeline-content {
    margin-left: auto;
}

.timeline-item:nth-child(even) .timeline-content::before,
.timeline-item:nth-child(odd) .timeline-content::before {
    content: '';
    position: absolute;
    top: 20px;
    width: 20px;
    height: 20px;
    background-color: var(--white);
    transform: rotate(45deg);
}

.timeline-item:nth-child(even) .timeline-content::before {
    right: -10px;
}

.timeline-item:nth-child(odd) .timeline-content::before {
    left: -10px;
}

.timeline-preview {
    margin-top: var(--spacing-md);
    border-radius: var(--border-radius-md);
    overflow: hidden;
}

.timeline-preview img,
.timeline-preview video {
    width: 100%;
    border-radius: var(--border-radius-md);
    transition: transform var(--transition-normal);
}

.timeline-item:hover .timeline-preview img,
.timeline-item:hover .timeline-preview video {
    transform: scale(1.05);
}

.timeline-item:hover .timeline-content {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}


/* About Section - Vision & Mission */

.vision-mission-container {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.vision-box,
.mission-box {
    flex: 1;
    min-width: 300px;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    background-color: var(--white);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.vision-box:hover,
.mission-box:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.vision-box {
    border-top: 4px solid var(--primary);
}

.mission-box {
    border-top: 4px solid var(--secondary);
}

.vision-box h3,
.mission-box h3 {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-md);
    color: var(--dark);
    font-size: var(--font-size-xl);
}

.vision-box h3 i,
.mission-box h3 i {
    margin-right: var(--spacing-sm);
    color: var(--primary);
}

.mission-box h3 i {
    color: var(--secondary);
}

.vision-box p,
.mission-box p {
    font-size: var(--font-size-md);
    line-height: 1.6;
}

.partnerships-section {
    margin-top: var(--spacing-2xl);
}

.partnerships-section h3 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-xl);
    color: var(--dark);
}

.partnership-categories {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    justify-content: center;
}

.partnership-category {
    flex: 1;
    min-width: 250px;
    max-width: 350px;
    padding: var(--spacing-lg);
    background-color: var(--light-gray);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
}

.partnership-category h4 {
    font-size: var(--font-size-lg);
    color: var(--primary);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-xs);
    border-bottom: 2px solid var(--primary-light);
}

.partnership-category ul {
    list-style-type: none;
    padding-left: 0;
}

.partnership-category li {
    margin-bottom: var(--spacing-sm);
    padding-left: var(--spacing-md);
    position: relative;
}

.partnership-category li:before {
    content: '•';
    color: var(--accent);
    position: absolute;
    left: 0;
    top: 0;
}


/* Join the Movement Section */

.join-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.signup-form,
.join-options {
    background-color: var(--white);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--gray);
    border-radius: var(--border-radius-md);
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(67, 97, 238, 0.2);
}

.validation-message {
    font-size: var(--font-size-sm);
    color: var(--error);
    margin-top: var(--spacing-xs);
    min-height: 20px;
}

.join-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

.join-option {
    text-align: center;
}

.join-option h3 {
    margin-bottom: var(--spacing-sm);
}

.join-option p {
    margin-bottom: var(--spacing-md);
    color: var(--gray);
}


/* Footer */

footer {
    background-color: var(--dark);
    color: var(--white);
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.footer-logo .logo {
    filter: brightness(0) invert(1);
}

.footer-logo .logo-text {
    color: var(--white);
}

.footer-column h4 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.footer-column h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 40px;
    height: 2px;
    background-color: var(--primary);
}

.footer-column ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-column ul li a {
    color: var(--light-gray);
    transition: color var(--transition-fast);
}

.footer-column ul li a:hover {
    color: var(--primary-light);
}

.footer-contact p {
    margin-bottom: var(--spacing-sm);
    display: flex;
    align-items: center;
}

.footer-contact p i {
    margin-right: var(--spacing-sm);
    color: var(--primary);
}

.footer-contact p a {
    color: var(--light-gray);
    transition: color var(--transition-fast);
}

.footer-contact p a:hover {
    color: var(--primary-light);
}

.social-icons {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.social-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.social-icon:hover {
    background-color: var(--primary);
    transform: translateY(-3px);
}

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: var(--spacing-lg);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.copyright {
    color: var(--gray);
    margin-bottom: 0;
}

.footer-app-links {
    display: flex;
    gap: var(--spacing-md);
}

.app-store-badge img,
.play-store-badge img {
    height: 40px;
}


/* Modals */

.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background-color: var(--white);
    border-radius: var(--border-radius-lg);
    width: 90%;
    max-width: 900px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-xl);
    transform: scale(0.9);
    transition: transform var(--transition-normal);
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--light-gray);
}

.modal-header h2 {
    margin-bottom: 0;
    color: var(--primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: var(--font-size-2xl);
    color: var(--gray);
    cursor: pointer;
    transition: color var(--transition-fast);
}

.modal-close:hover {
    color: var(--error);
}

.modal-body {
    padding: var(--spacing-lg);
}


/* Sign Translator Modal */

.translator-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
}

.video-container {
    position: relative;
    border-radius: var(--border-radius-lg);
    overflow: hidden;
    background-color: var(--light-gray);
    aspect-ratio: 4/3;
}

#translator-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-lg);
    color: var(--gray);
}

.controls {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    flex-wrap: wrap;
}

.translation-output {
    background-color: var(--light-gray);
    border-radius: var(--border-radius-lg);
    padding: var(--spacing-lg);
}

.results-container {
    min-height: 150px;
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--gray);
}

.typing-text {
    border-right: 2px solid var(--primary);
    white-space: nowrap;
    overflow: hidden;
    animation: typing 3.5s steps(40, end), blink-caret 0.75s step-end infinite;
}

@keyframes typing {
    from {
        width: 0
    }
    to {
        width: 100%
    }
}

@keyframes blink-caret {
    from,
    to {
        border-color: transparent
    }
    50% {
        border-color: var(--primary)
    }
}

.confidence-meter {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.confidence-label {
    font-weight: 500;
    min-width: 80px;
}

.confidence-bar {
    flex: 1;
    height: 10px;
    background-color: var(--white);
    border-radius: var(--border-radius-full);
    overflow: hidden;
}

.confidence-level {
    height: 100%;
    background-color: var(--primary);
    border-radius: var(--border-radius-full);
    transition: width var(--transition-normal);
}

.confidence-percentage {
    min-width: 40px;
    text-align: right;
    font-weight: 500;
}


/* Sign Library Modal */

.library-search {
    display: flex;
    margin-bottom: var(--spacing-lg);
}

#library-search-input {
    flex: 1;
    padding: var(--spacing-md);
    border: 1px solid var(--gray);
    border-radius: var(--border-radius-md) 0 0 var(--border-radius-md);
    font-size: var(--font-size-md);
}

#library-search-btn {
    border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
    padding: var(--spacing-md);
}

.library-categories {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.category-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--light-gray);
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-weight: 500;
}

.category-btn:hover {
    background-color: rgba(67, 97, 238, 0.1);
}

.category-btn.active {
    background-color: var(--primary);
    color: var(--white);
}

.library-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.sign-card {
    background-color: var(--white);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.sign-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.sign-video-container {
    position: relative;
    aspect-ratio: 1/1;
    background-color: var(--light-gray);
}

.sign-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.sign-info {
    padding: var(--spacing-sm);
    text-align: center;
}

.sign-name {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--dark);
}

.sign-category {
    font-size: var(--font-size-xs);
    color: var(--gray);
    text-transform: uppercase;
}

.library-pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.pagination-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--white);
    border: 1px solid var(--primary);
    border-radius: var(--border-radius-md);
    color: var(--primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.pagination-btn:hover:not(:disabled) {
    background-color: var(--primary);
    color: var(--white);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.pagination-info {
    font-weight: 500;
}


/* Authentication Modal */

.auth-tabs {
    display: flex;
    margin-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--light-gray);
}

.auth-tab {
    flex: 1;
    padding: var(--spacing-md);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    font-weight: 600;
    transition: all var(--transition-fast);
    color: var(--gray);
}

.auth-tab:hover {
    color: var(--primary);
}

.auth-tab.active {
    color: var(--primary);
    border-bottom-color: var(--primary);
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
    animation: fadeIn var(--transition-normal);
}

.form-options {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.checkbox-container,
.radio-container {
    display: flex;
    align-items: center;
    position: relative;
    padding-left: 30px;
    cursor: pointer;
    -webkit-user-select: none;
    user-select: none;
}

.checkbox-container input,
.radio-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 20px;
    width: 20px;
    background-color: var(--white);
    border: 1px solid var(--gray);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
}

.radio-checkmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 20px;
    width: 20px;
    background-color: var(--white);
    border: 1px solid var(--gray);
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.checkbox-container:hover input~.checkmark,
.radio-container:hover input~.radio-checkmark {
    border-color: var(--primary);
}

.checkbox-container input:checked~.checkmark,
.radio-container input:checked~.radio-checkmark {
    background-color: var(--primary);
    border-color: var(--primary);
}

.checkmark:after,
.radio-checkmark:after {
    content: "";
    position: absolute;
    display: none;
}

.checkbox-container input:checked~.checkmark:after,
.radio-container input:checked~.radio-checkmark:after {
    display: block;
}

.checkbox-container .checkmark:after {
    left: 6px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.radio-container .radio-checkmark:after {
    top: 6px;
    left: 6px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: white;
}

.forgot-password {
    color: var(--primary);
    font-size: var(--font-size-sm);
}

.social-login {
    margin-top: var(--spacing-xl);
    text-align: center;
}

.social-login p {
    color: var(--gray);
    margin-bottom: var(--spacing-md);
    position: relative;
}

.social-login p::before,
.social-login p::after {
    content: '';
    position: absolute;
    top: 50%;
    width: 30%;
    height: 1px;
    background-color: var(--light-gray);
}

.social-login p::before {
    left: 0;
}

.social-login p::after {
    right: 0;
}

.social-buttons {
    display: flex;
    gap: var(--spacing-md);
}


/* Policy Modals */

.policy-content {
    max-height: 60vh;
    overflow-y: auto;
    padding-right: var(--spacing-md);
}

.policy-content h3 {
    color: var(--primary);
    margin-bottom: var(--spacing-md);
}


/* Partner Form Modal */

#partner-form textarea {
    resize: vertical;
}


/* Donation Modal */

.donation-amounts {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
}

.donation-amount {
    flex: 1;
    min-width: 60px;
    padding: var(--spacing-md);
    background-color: var(--white);
    border: 2px solid var(--light-gray);
    border-radius: var(--border-radius-md);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.donation-amount:hover {
    border-color: var(--primary);
}

.donation-amount.active {
    background-color: var(--primary);
    color: var(--white);
    border-color: var(--primary);
}

.custom-amount-container {
    margin-bottom: var(--spacing-lg);
    display: none;
}

.custom-amount-container.active {
    display: block;
    animation: fadeIn var(--transition-normal);
}

.custom-amount-input {
    display: flex;
    align-items: center;
    border: 1px solid var(--gray);
    border-radius: var(--border-radius-md);
    overflow: hidden;
}

.currency-symbol {
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--light-gray);
    font-weight: 600;
}

#custom-amount {
    flex: 1;
    border: none;
    padding: var(--spacing-sm) var(--spacing-md);
}

#custom-amount:focus {
    outline: none;
}

.donation-frequency {
    margin-bottom: var(--spacing-lg);
}

.frequency-options {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
}

.payment-methods {
    margin-bottom: var(--spacing-lg);
}

.payment-options {
    display: flex;
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
}

.payment-option {
    flex: 1;
    padding: var(--spacing-md);
    background-color: var(--white);
    border: 1px solid var(--light-gray);
    border-radius: var(--border-radius-md);
}


/* Chatbot */

.chatbot-bubble {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 60px;
    height: 60px;
    background-color: var(--primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    z-index: var(--z-chatbot);
    transition: all var(--transition-normal);
}

.chatbot-bubble:hover {
    transform: scale(1.1);
}

.chatbot-bubble i {
    color: var(--white);
    font-size: var(--font-size-xl);
}

.chatbot-container {
    position: fixed;
    bottom: var(--spacing-xl);
    right: var(--spacing-xl);
    width: 350px;
    height: 500px;
    background-color: var(--white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    z-index: var(--z-chatbot);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-normal);
}

.chatbot-container.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.chatbot-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    background-color: var(--primary);
    color: var(--white);
}

.chatbot-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.chatbot-title h3 {
    margin-bottom: 0;
    font-size: var(--font-size-md);
}

.chatbot-close {
    background: none;
    border: none;
    color: var(--white);
    cursor: pointer;
    font-size: var(--font-size-lg);
    transition: all var(--transition-fast);
}

.chatbot-close:hover {
    transform: scale(1.2);
}

.chatbot-messages {
    flex: 1;
    padding: var(--spacing-md);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.message {
    max-width: 80%;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    margin-bottom: var(--spacing-sm);
}

.bot-message {
    background-color: var(--light-gray);
    align-self: flex-start;
    border-top-left-radius: 0;
}

.user-message {
    background-color: var(--primary);
    color: var(--white);
    align-self: flex-end;
    border-top-right-radius: 0;
}

.typing-indicator {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--light-gray);
    border-radius: var(--border-radius-md);
    align-self: flex-start;
    border-top-left-radius: 0;
    margin-bottom: var(--spacing-sm);
}

.typing-dot {
    width: 8px;
    height: 8px;
    background-color: var(--gray);
    border-radius: 50%;
    animation: typing-animation 1.5s infinite ease-in-out;
}

.typing-dot:nth-child(1) {
    animation-delay: 0s;
}

.typing-dot:nth-child(2) {
    animation-delay: 0.3s;
}

.typing-dot:nth-child(3) {
    animation-delay: 0.6s;
}

@keyframes typing-animation {
    0%,
    100% {
        transform: scale(1);
        opacity: 0.5;
    }
    50% {
        transform: scale(1.2);
        opacity: 1;
    }
}

.chatbot-input {
    display: flex;
    padding: var(--spacing-md);
    border-top: 1px solid var(--light-gray);
}

#chatbot-message-input {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border: 1px solid var(--gray);
    border-radius: var(--border-radius-md) 0 0 var(--border-radius-md);
    font-size: var(--font-size-md);
}

#chatbot-send-btn {
    border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
}


/* Loading Spinner */

.loading-spinner {
    display: inline-block;
    width: 50px;
    height: 50px;
    border: 3px solid rgba(67, 97, 238, 0.3);
    border-radius: 50%;
    border-top-color: var(--primary);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.loading-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    z-index: var(--z-modal);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

.loading-container.active {
    opacity: 1;
    visibility: visible;
}

.loading-text {
    margin-top: var(--spacing-md);
    color: var(--primary);
    font-weight: 600;
}


/* Animations */

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideInUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

@keyframes slideInLeft {
    from {
        transform: translateX(-50px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(50px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

.animate-fade-in {
    animation: fadeIn 1s ease forwards;
}

.animate-slide-up {
    animation: slideInUp 1s ease forwards;
}

.animate-slide-left {
    animation: slideInLeft 1s ease forwards;
}

.animate-slide-right {
    animation: slideInRight 1s ease forwards;
}

.animate-pulse {
    animation: pulse 2s infinite;
}


/* Responsive Styles */

@media (max-width: 1200px) {
    .container {
        max-width: var(--container-lg);
    }
    .headline {
        font-size: var(--font-size-4xl);
    }
    .subheadline {
        font-size: var(--font-size-lg);
    }
}

@media (max-width: 992px) {
    .container {
        max-width: var(--container-md);
    }
    .headline {
        font-size: var(--font-size-3xl);
    }
    .hero-buttons {
        flex-direction: column;
        align-items: flex-start;
    }
    .hero-buttons .btn {
        width: 100%;
        margin-bottom: var(--spacing-sm);
    }
    .timeline-content {
        width: 80%;
        margin: 0 auto;
    }
    .timeline-item:nth-child(even) .timeline-content::before,
    .timeline-item:nth-child(odd) .timeline-content::before {
        display: none;
    }
    .timeline::before {
        left: 20px;
    }
    .timeline-item::before {
        left: 20px;
        transform: translateX(-50%);
    }
}

@media (max-width: 768px) {
    .container {
        max-width: var(--container-sm);
    }
    h1 {
        font-size: var(--font-size-3xl);
    }
    h2 {
        font-size: var(--font-size-2xl);
    }
    .headline {
        font-size: var(--font-size-2xl);
    }
    .subheadline {
        font-size: var(--font-size-md);
    }
    #main-nav {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        background-color: var(--white);
        box-shadow: var(--shadow-md);
        padding: var(--spacing-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
        z-index: var(--z-dropdown);
    }
    #main-nav.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    #main-nav ul {
        flex-direction: column;
        align-items: flex-start;
    }
    .mobile-menu-toggle {
        display: block;
    }
    .mobile-menu-toggle.active span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    .mobile-menu-toggle.active span:nth-child(2) {
        opacity: 0;
    }
    .mobile-menu-toggle.active span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    .testimonial {
        flex-direction: column;
        text-align: center;
    }
    .testimonial-image {
        margin-bottom: var(--spacing-md);
    }
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .footer-column h4::after {
        left: 50%;
        transform: translateX(-50%);
    }
    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
    .social-icons {
        justify-content: center;
    }
    .chatbot-container {
        width: 300px;
        height: 450px;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    .headline {
        font-size: var(--font-size-xl);
    }
    .subheadline {
        font-size: var(--font-size-base);
    }
    .section-title {
        font-size: var(--font-size-xl);
    }
    .section-subtitle {
        font-size: var(--font-size-md);
    }
    .auth-tabs {
        flex-direction: column;
    }
    .auth-tab {
        width: 100%;
        text-align: center;
    }
    .form-options {
        flex-direction: column;
        align-items: flex-start;
    }
    .social-buttons {
        flex-direction: column;
    }
    .chatbot-container {
        width: 280px;
        height: 400px;
        bottom: var(--spacing-md);
        right: var(--spacing-md);
    }
    .chatbot-bubble {
        bottom: var(--spacing-md);
        right: var(--spacing-md);
    }
}


/* Header and Navigation Styles */

.main-header {
    background: var(--header-bg, #ffffff);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.logo-container img {
    height: 40px;
    width: auto;
}

.main-nav ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 2rem;
}

.main-nav a {
    text-decoration: none;
    color: var(--text-color, #333);
    font-weight: 500;
    transition: color 0.3s ease;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--primary-color, #4a6fa5);
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.auth-btn {
    padding: 0.5rem 1rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.auth-btn:not(.btn-signup) {
    color: var(--text-color, #333);
}

.btn-signup {
    background: var(--primary-color, #4a6fa5);
    color: white;
}

.btn-signup:hover {
    background: var(--secondary-color, #b33f62);
    transform: translateY(-2px);
}

.btn-logout {
    color: var(--error-color, #dc3545) !important;
}

.theme-toggle,
.mobile-menu-toggle {
    background: none;
    border: none;
    font-size: 1.2rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 6px;
    transition: background-color 0.3s ease;
}

.theme-toggle:hover,
.mobile-menu-toggle:hover {
    background-color: var(--hover-bg, #f5f5f5);
}


/* Mobile menu styles */

.mobile-menu-toggle {
    display: none;
}

.mobile-auth-container {
    display: none;
}


/* Breadcrumbs */

.breadcrumbs {
    background: var(--breadcrumb-bg, #f8f9fa);
    padding: 1rem 0;
}

.breadcrumbs ul {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 0.5rem;
}

.breadcrumbs a {
    color: var(--text-muted, #6c757d);
    text-decoration: none;
}

.breadcrumbs a:hover {
    color: var(--primary-color, #4a6fa5);
}


/* Footer styles */

footer {
    background: var(--footer-bg, #2c3e50);
    color: white;
    padding: 3rem 0 1rem;
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.footer-logo img {
    height: 30px;
    width: auto;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
}

.footer-column h3 {
    margin-bottom: 1rem;
    color: var(--accent-color, #b33f62);
}

.footer-column ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-column li {
    margin-bottom: 0.5rem;
}

.footer-column a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-column a:hover {
    color: white;
}

.footer-social {
    text-align: center;
    margin-bottom: 2rem;
}

.social-icons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
}

.social-icons a {
    color: white;
    font-size: 1.5rem;
    transition: transform 0.3s ease;
}

.social-icons a:hover {
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}


/* Responsive design */

@media (max-width: 768px) {
    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--header-bg, #ffffff);
        box-shadow: 0 4px 10px rgba(0, 0, 0, 0.1);
        padding: 1rem;
    }
    .main-nav.active {
        display: block;
    }
    .main-nav ul {
        flex-direction: column;
        gap: 1rem;
    }
    .mobile-menu-toggle {
        display: block;
    }
    .header-controls .auth-btn {
        display: none;
    }
    .mobile-auth-container {
        display: flex;
        flex-direction: column;
        gap: 1rem;
        margin-top: 1rem;
    }
    .footer-content {
        grid-template-columns: 1fr;
    }
    .footer-links {
        grid-template-columns: 1fr;
    }
}


/* Dark theme support */

[data-theme="dark"] {
    --header-bg: #1a1a1a;
    --text-color: #ffffff;
    --hover-bg: #333333;
    --breadcrumb-bg: #2d2d2d;
    --footer-bg: #0d0d0d;
    /* Enhanced Modern Landing Page Styles */
    :root {
        /* Existing variables plus new ones for responsive design */
        --section-padding: clamp(3rem, 8vw, 6rem);
        --card-padding: clamp(1.5rem, 4vw, 2.5rem);
        --grid-gap: clamp(1rem, 4vw, 2rem);
    }
    /* Hero Section Improvements */
    .hero-section {
        min-height: 100vh;
        min-height: 100dvh;
        /* Dynamic viewport height for mobile */
        display: flex;
        align-items: center;
        padding: calc(var(--header-height) + 2rem) 0 4rem;
        background: linear-gradient(135deg, rgba(79, 112, 255, 0.1) 0%, rgba(76, 201, 240, 0.1) 100%);
        position: relative;
        overflow: hidden;
    }
    .headline {
        font-size: clamp(2rem, 8vw, 4rem);
        font-weight: 800;
        margin-bottom: 1.5rem;
        line-height: 1.1;
    }
    .subheadline {
        font-size: clamp(1rem, 3vw, 1.5rem);
        max-width: min(700px, 90%);
        margin: 0 auto 2.5rem;
    }
    .hero-buttons {
        display: flex;
        gap: 1rem;
        margin-bottom: 3rem;
        flex-wrap: wrap;
        justify-content: center;
    }
    /* Content Sections */
    .content-section {
        padding: var(--section-padding) 0;
        position: relative;
    }
    /* Feature Cards Grid */
    .feature-cards {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
        gap: var(--grid-gap);
        margin-top: 2.5rem;
    }
    .feature-card {
        background-color: var(--white);
        border-radius: var(--border-radius);
        padding: var(--card-padding);
        box-shadow: var(--shadow);
        transition: var(--transition);
        height: 100%;
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    /* Steps Container */
    .steps-container {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: var(--grid-gap);
        margin-top: 2.5rem;
    }
    .step {
        background-color: var(--white);
        border-radius: var(--border-radius);
        padding: var(--card-padding);
        box-shadow: var(--shadow);
        text-align: center;
    }
    /* Testimonial Slider */
    .testimonial-slider {
        position: relative;
        max-width: min(900px, 100%);
        margin: 0 auto 3rem;
        overflow: hidden;
    }
    .testimonial {
        padding: 2rem;
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
    /* Learning Features Grid */
    .learning-features {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
        gap: var(--grid-gap);
        margin-top: 2.5rem;
    }
    /* Timeline Improvements */
    .timeline-container {
        max-width: min(1000px, 100%);
        margin: 0 auto;
        padding: 2rem 0;
    }
    .timeline {
        position: relative;
        padding-left: 3rem;
    }
    .timeline::before {
        left: 1.5rem;
    }
    .timeline-item {
        margin-bottom: 3rem;
        padding-left: 0;
    }
    .timeline-item::before {
        left: -3rem;
        transform: translateX(-50%);
    }
    .timeline-content {
        width: 100%;
        margin-left: 0;
    }
    /* Vision & Mission Container */
    .vision-mission-container {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
        gap: var(--grid-gap);
        margin-top: 2.5rem;
    }
    /* Partnership Categories */
    .partnership-categories {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(min(250px, 100%), 1fr));
        gap: var(--grid-gap);
        margin: 2.5rem 0;
    }
    /* Join Content Grid */
    .join-content {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
        gap: var(--grid-gap);
        margin-top: 2.5rem;
    }
    /* Footer Improvements */
    .footer-content {
        display: grid;
        grid-template-columns: repeat(auto-fit, minmax(min(200px, 100%), 1fr));
        gap: var(--grid-gap);
    }
    /* Mobile-First Media Queries */
    @media (max-width: 768px) {
        .hero-buttons {
            flex-direction: column;
            align-items: stretch;
        }
        .hero-buttons .btn {
            width: 100%;
            margin-bottom: 0.5rem;
        }
        .testimonial {
            flex-direction: column;
            text-align: center;
        }
        .timeline {
            padding-left: 2rem;
        }
        .timeline::before {
            left: 1rem;
        }
        .timeline-item::before {
            left: -2rem;
        }
    }
    @media (max-width: 480px) {
        .headline {
            font-size: clamp(1.75rem, 7vw, 2.5rem);
        }
        .subheadline {
            font-size: clamp(0.9rem, 2.5vw, 1.1rem);
        }
        .feature-cards,
        .steps-container,
        .learning-features,
        .vision-mission-container,
        .partnership-categories,
        .join-content {
            grid-template-columns: 1fr;
        }
        .footer-content {
            grid-template-columns: 1fr;
            text-align: center;
        }
    }
    /* Touch device improvements */
    @media (hover: none) and (pointer: coarse) {
        .feature-card:hover,
        .step:hover {
            transform: none;
        }
        .btn:hover {
            transform: none;
        }
        /* Increase touch target sizes */
        .btn {
            min-height: 44px;
            min-width: 44px;
        }
        .nav-link {
            padding: 1rem 0.75rem;
        }
    }
    /* Reduced motion for accessibility */
    @media (prefers-reduced-motion: reduce) {
        *,
        *::before,
        *::after {
            animation-duration: 0.01ms !important;
            animation-iteration-count: 1 !important;
            transition-duration: 0.01ms !important;
            scroll-behavior: auto !important;
        }
    }
}