/* ===================================
   VARIABLES & RESET
   =================================== */
:root {
    /* Colors - Light Theme */
    --color-bg: #f5f5f5;
    --color-bg-secondary: #ffffff;
    --color-text: #1a1a1a;
    --color-text-secondary: #4a5568;
    --color-primary: #1b49bb;
    --color-primary-dark: #0f2d7a;
    --color-accent: #ffcc00;
    --color-border: #e2e8f0;
    --color-card-bg: #ffffff;
    --color-shadow: rgba(0, 0, 0, 0.1);
    
    /* Typography */
    --font-mono: 'JetBrains Mono', 'Courier New', monospace;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

/* Dark Theme */
body.dark-theme {
    --color-bg: #0d1117;
    --color-bg-secondary: #161b22;
    --color-text: #c9d1d9;
    --color-text-secondary: #8b949e;
    --color-primary: #58a6ff;
    --color-primary-dark: #1f6feb;
    --color-accent: #f0e68c;
    --color-border: #30363d;
    --color-card-bg: #161b22;
    --color-shadow: rgba(0, 0, 0, 0.4);
}

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

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

body {
    font-family: var(--font-sans);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    transition: background-color var(--transition-normal), color var(--transition-normal);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ===================================
   ASCII HEADER
   =================================== */
.ascii-header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    padding: var(--spacing-lg) 0;
    position: relative;
    overflow: hidden;
}

.ascii-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        repeating-linear-gradient(
            0deg,
            transparent,
            transparent 2px,
            rgba(255, 255, 255, 0.03) 2px,
            rgba(255, 255, 255, 0.03) 4px
        );
    pointer-events: none;
}

.ascii-banner {
    font-family: var(--font-mono);
    font-size: clamp(0.4rem, 1.2vw, 0.9rem);
    color: var(--color-accent);
    text-align: center;
    white-space: pre;
    line-height: 1.2;
    margin: 0;
    text-shadow: 
        0 0 10px rgba(255, 204, 0, 0.5),
        0 0 20px rgba(255, 204, 0, 0.3);
    position: relative;
    z-index: 1;
    animation: glowPulse 3s ease-in-out infinite;
}

@keyframes glowPulse {
    0%, 100% {
        text-shadow: 
            0 0 10px rgba(255, 204, 0, 0.5),
            0 0 20px rgba(255, 204, 0, 0.3);
    }
    50% {
        text-shadow: 
            0 0 15px rgba(255, 204, 0, 0.7),
            0 0 30px rgba(255, 204, 0, 0.5),
            0 0 40px rgba(255, 204, 0, 0.3);
    }
}

.progress-bar {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--color-accent);
    height: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
}

/* ===================================
   HERO SECTION
   =================================== */
.hero-section {
    padding: var(--spacing-xl) 0;
    text-align: center;
    background: var(--color-bg-secondary);
    border-bottom: 2px solid var(--color-border);
}

.hero-content {
    max-width: 900px;
    margin: 0 auto;
}

.glitch-text {
    font-size: clamp(1.8rem, 4vw, 3rem);
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    position: relative;
    display: inline-block;
}

.glitch-text::before,
.glitch-text::after {
    content: attr(data-text);
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
}

.glitch-text:hover::before {
    animation: glitch-anim-1 0.3s ease-in-out;
    color: var(--color-accent);
    z-index: -1;
}

.glitch-text:hover::after {
    animation: glitch-anim-2 0.3s ease-in-out;
    color: var(--color-primary-dark);
    z-index: -2;
}

@keyframes glitch-anim-1 {
    0%, 100% {
        transform: translate(0);
        opacity: 0;
    }
    20% {
        transform: translate(-2px, 2px);
        opacity: 0.7;
    }
    40% {
        transform: translate(-2px, -2px);
        opacity: 0.7;
    }
    60% {
        transform: translate(2px, 2px);
        opacity: 0.7;
    }
    80% {
        transform: translate(2px, -2px);
        opacity: 0.7;
    }
}

@keyframes glitch-anim-2 {
    0%, 100% {
        transform: translate(0);
        opacity: 0;
    }
    20% {
        transform: translate(2px, -2px);
        opacity: 0.5;
    }
    40% {
        transform: translate(2px, 2px);
        opacity: 0.5;
    }
    60% {
        transform: translate(-2px, -2px);
        opacity: 0.5;
    }
    80% {
        transform: translate(-2px, 2px);
        opacity: 0.5;
    }
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* ===================================
   THEME TOGGLE
   =================================== */
.theme-toggle {
    margin-top: var(--spacing-lg);
}

.theme-btn {
    background: var(--color-primary);
    color: white;
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: 50px;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    transition: all var(--transition-normal);
    box-shadow: 0 4px 15px var(--color-shadow);
}

.theme-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--color-shadow);
    background: var(--color-primary-dark);
}

.theme-icon {
    font-size: 1.2rem;
}

/* ===================================
   AIR PIXEL SECTION
   =================================== */
.air-pixel-section {
    padding: var(--spacing-xl) 0;
    background: var(--color-bg);
}

.air-pixel-card {
    position: relative;
    background: var(--color-card-bg);
    border-radius: 20px;
    padding: var(--spacing-xl);
    text-align: center;
    box-shadow: 
        0 10px 40px var(--color-shadow),
        0 0 0 1px var(--color-border);
    overflow: hidden;
    transition: transform var(--transition-normal);
}

.air-pixel-card:hover {
    transform: translateY(-5px);
}

.card-glow {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(
        circle,
        rgba(27, 73, 187, 0.1) 0%,
        transparent 70%
    );
    animation: rotate 20s linear infinite;
    pointer-events: none;
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

.card-content {
    position: relative;
    z-index: 1;
}

.section-title {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
    font-weight: 700;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.section-title .icon {
    font-size: 1.5em;
}

.air-pixel-description {
    font-size: 1.1rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

.air-pixel-link {
    display: inline-block;
    text-decoration: none;
    position: relative;
}

.video-container {
    position: relative;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    max-width: 600px;
    margin: 0 auto;
    transition: transform var(--transition-normal);
}

.video-container:hover {
    transform: scale(1.05);
}

.air-pixel-video {
    width: 100%;
    height: auto;
    display: block;
}

.play-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--transition-normal);
}

.video-container:hover .play-overlay {
    opacity: 1;
}

.play-icon {
    font-size: 4rem;
    color: white;
    text-shadow: 0 0 20px rgba(255, 255, 255, 0.5);
    margin-bottom: var(--spacing-sm);
}

.play-text {
    font-family: var(--font-mono);
    font-size: 1.2rem;
    font-weight: 600;
    color: white;
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* ===================================
   MAIN CONTENT
   =================================== */
.main-content {
    padding: var(--spacing-xl) 0;
}

.content-section {
    margin-bottom: calc(var(--spacing-xl) * 2);
}

.terminal-style {
    font-family: var(--font-mono);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
}

.prompt {
    color: var(--color-accent);
    font-weight: 700;
}

/* ===================================
   CARDS GRID
   =================================== */
.cards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.info-card {
    background: var(--color-card-bg);
    border: 2px solid var(--color-border);
    border-radius: 15px;
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateY(30px);
}

.info-card.aos-animate {
    opacity: 1;
    transform: translateY(0);
}

.info-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-primary);
    box-shadow: 0 10px 30px var(--color-shadow);
}

.card-icon {
    font-size: 2.5rem;
    line-height: 1;
}

.card-text {
    color: var(--color-text);
    line-height: 1.7;
}

/* ===================================
   PROGRAM GRID
   =================================== */
.program-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.program-card {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    border-radius: 20px;
    padding: var(--spacing-xl);
    text-align: center;
    box-shadow: 0 10px 30px var(--color-shadow);
    transition: transform var(--transition-normal);
    opacity: 0;
    transform: scale(0.9);
}

.program-card.aos-animate {
    opacity: 1;
    transform: scale(1);
}

.program-card:hover {
    transform: scale(1.05);
}

.program-card h3 {
    font-size: 2rem;
    margin-bottom: var(--spacing-md);
    font-weight: 800;
}

.program-topics {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    justify-content: center;
    margin-bottom: var(--spacing-md);
}

.topic-tag {
    background: rgba(255, 255, 255, 0.2);
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    backdrop-filter: blur(10px);
}

.program-hours {
    font-family: var(--font-mono);
    font-size: 1.1rem;
    opacity: 0.9;
}

/* ===================================
   MATERIAL BOX
   =================================== */
.material-box {
    background: var(--color-card-bg);
    border: 2px solid var(--color-border);
    border-radius: 15px;
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.material-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 1.1rem;
}

.material-icon {
    font-size: 1.8rem;
}

/* ===================================
   EVALUATION GRID
   =================================== */
.eval-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.eval-card {
    background: var(--color-card-bg);
    border: 2px solid var(--color-border);
    border-radius: 15px;
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-normal);
}

.eval-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px var(--color-shadow);
}

.eval-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.eval-card h3 {
    font-size: 1.5rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.eval-card p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.eval-badge {
    display: inline-block;
    background: var(--color-primary);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
}

/* ===================================
   STUDIES CONTAINER
   =================================== */
.studies-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.study-category {
    background: var(--color-card-bg);
    border-left: 4px solid var(--color-primary);
    padding: var(--spacing-lg);
    border-radius: 10px;
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateX(-30px);
}

.study-category.aos-animate {
    opacity: 1;
    transform: translateX(0);
}

.study-category:hover {
    transform: translateX(10px);
    box-shadow: 0 5px 20px var(--color-shadow);
}

.study-category.highlight-red {
    border-left-color: #dc2626;
    background: linear-gradient(to right, rgba(220, 38, 38, 0.05), var(--color-card-bg));
}

.category-title {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.3rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
}

.category-icon {
    font-size: 1.5rem;
}

.study-location {
    color: var(--color-text-secondary);
    font-style: italic;
}

.study-subtitle {
    color: #dc2626;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.study-list,
.cpge-list {
    list-style: none;
    padding-left: 0;
    margin-top: var(--spacing-sm);
}

.study-list li,
.cpge-list li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-lg);
    position: relative;
}

.study-list li::before,
.cpge-list li::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--color-primary);
    font-weight: bold;
}

.cpge-details {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
}

/* ===================================
   SUMMARY SECTION
   =================================== */
.summary-section {
    background: var(--color-bg-secondary);
    padding: var(--spacing-xl);
    border-radius: 20px;
    margin-top: var(--spacing-xl);
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.summary-card {
    background: var(--color-card-bg);
    border: 2px solid var(--color-primary);
    border-radius: 15px;
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-normal);
    opacity: 0;
    transform: rotateY(90deg);
}

.summary-card.aos-animate {
    opacity: 1;
    transform: rotateY(0);
}

.summary-card:hover {
    transform: scale(1.05);
    box-shadow: 0 10px 30px var(--color-shadow);
}

.summary-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.summary-card p {
    font-size: 1.1rem;
    line-height: 1.6;
}

/* ===================================
   FOOTER
   =================================== */
.footer {
    background: var(--color-bg-secondary);
    border-top: 2px solid var(--color-border);
    padding: var(--spacing-xl) 0;
    margin-top: calc(var(--spacing-xl) * 2);
}

.footer-content {
    text-align: center;
}

.footer-text {
    font-family: var(--font-mono);
    font-size: 1rem;
    color: var(--color-text);
    margin-bottom: var(--spacing-sm);
}

.terminal-prompt {
    color: var(--color-accent);
    font-weight: 700;
}

.footer-copyright {
    color: var(--color-text-secondary);
    font-size: 0.9rem;
}

/* ===================================
   HIGHLIGHT CARDS
   =================================== */
.info-card.highlight-green {
    border-color: #10b981;
    background: linear-gradient(to right, rgba(16, 185, 129, 0.05), var(--color-card-bg));
}

.info-card.highlight-green:hover {
    border-color: #10b981;
    box-shadow: 0 10px 30px rgba(16, 185, 129, 0.2);
}

/* ===================================
   FEATURE GRID
   =================================== */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
}

.feature-card {
    background: var(--color-card-bg);
    border: 2px solid var(--color-border);
    border-radius: 15px;
    padding: var(--spacing-xl);
    text-align: center;
    transition: all var(--transition-normal);
    opacity: 0;
    transform: scale(0.9);
}

.feature-card.aos-animate {
    opacity: 1;
    transform: scale(1);
}

.feature-card:hover {
    transform: translateY(-10px) scale(1.05);
    border-color: var(--color-primary);
    box-shadow: 0 15px 40px var(--color-shadow);
}

.feature-icon {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-md);
    display: block;
}

.feature-card h3 {
    font-size: 1.3rem;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

.feature-card p {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* ===================================
   INFO BOX (Math section)
   =================================== */
.info-box {
    background: var(--color-card-bg);
    border: 2px solid var(--color-border);
    border-left: 5px solid var(--color-primary);
    border-radius: 15px;
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.info-box-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
}

.info-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.info-box-item p {
    margin: 0;
    line-height: 1.7;
    font-size: 1.05rem;
}

/* ===================================
   TESTIMONIALS
   =================================== */
.testimonials-section {
    background: var(--color-bg-secondary);
    padding: var(--spacing-xl);
    border-radius: 20px;
    margin: calc(var(--spacing-xl) * 2) 0;
}

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

.testimonial-card {
    background: var(--color-card-bg);
    border: 2px solid var(--color-accent);
    border-radius: 20px;
    padding: var(--spacing-xl);
    position: relative;
    box-shadow: 0 10px 30px var(--color-shadow);
    transition: all var(--transition-normal);
    opacity: 0;
    transform: translateX(-50px);
}

.testimonial-card.aos-animate {
    opacity: 1;
    transform: translateX(0);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(255, 204, 0, 0.3);
}

.testimonial-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.testimonial-text {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--color-text);
    margin: 0 0 var(--spacing-md) 0;
    font-style: italic;
}

.testimonial-text::before {
    content: open-quote;
    font-size: 3rem;
    color: var(--color-accent);
    line-height: 0;
    vertical-align: -0.4em;
}

.testimonial-text::after {
    content: close-quote;
    font-size: 3rem;
    color: var(--color-accent);
    line-height: 0;
    vertical-align: -0.4em;
}

.testimonial-author {
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--color-primary);
    text-align: right;
}

/* ===================================
   RESPONSIVE
   =================================== */
@media (max-width: 768px) {
    .ascii-banner {
        font-size: 0.35rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .cards-grid,
    .program-grid,
    .eval-grid,
    .summary-grid,
    .feature-grid,
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .testimonial-card {
        transform: translateX(0);
    }
}

/* ===================================
   ANIMATIONS
   =================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Add smooth transitions for all interactive elements */
button,
a,
.info-card,
.program-card,
.eval-card,
.study-category,
.summary-card {
    transition-property: all;
    transition-timing-function: ease;
}