/* ============================================
   GLOBAL STYLES & RESET
   ============================================ */

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

:root {
    /* Color Palette - Cybersecurity Theme */
    --primary-dark: #0f1419;
    --primary-darker: #0a0d12;
    --accent-blue: #0099ff;
    --accent-red: #ff3333;
    --accent-amber: #ffaa00;
    --text-light: #e8eef5;
    --text-muted: #a0a8b8;
    --card-bg: #1a1f2e;
    --overlay-dark: rgba(15, 20, 25, 0.7);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 2.5rem;
    --font-size-4xl: 3.5rem;

    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
}

/* Respect user's motion preferences */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

html {
    scroll-behavior: smooth;
}

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

/* ============================================
   TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.5px;
}

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

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

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

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

p {
    font-size: var(--font-size-base);
    color: var(--text-light);
}

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

a:hover {
    color: #00ccff;
    text-decoration: underline;
}

/* ============================================
   NAVBAR (STICKY)
   ============================================ */

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to bottom, rgba(15, 20, 25, 0.95), transparent);
    backdrop-filter: blur(8px);
    z-index: 1000;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid rgba(0, 153, 255, 0.1);
}

.navbar-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.navbar-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--accent-blue);
}

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

.logo-text {
    display: none;
}

@media (min-width: 768px) {
    .logo-text {
        display: inline;
    }
}

.navbar-menu {
    display: flex;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-link {
    font-size: var(--font-size-sm);
    color: var(--text-light);
    transition: all var(--transition-fast);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
}

.nav-link:hover {
    color: var(--accent-blue);
    background: rgba(0, 153, 255, 0.1);
}

/* ============================================
   PROGRESS BAR
   ============================================ */

.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(to right, var(--accent-blue), var(--accent-red));
    z-index: 999;
    width: 0%;
    transition: width 0.1s ease;
}

/* ============================================
   HERO SECTION
   ============================================ */

.hero {
    position: relative;
    width: 100vw;
    height: 100vh;
    min-height: 100vh;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0;
}

.hero-video {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    background: transparent;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.25);
    z-index: 2;
}

/* Tap-to-play overlay: invisible, clickable zone to unlock unmuted audio */
.hero-overlay.tap-to-play {
    background: transparent;
    pointer-events: auto;
    cursor: pointer;
    z-index: 10;
    transition: opacity 0.3s ease;
}

.hero-overlay.tap-to-play.active {
    opacity: 0;
    pointer-events: none;
}

@media (max-width: 768px) {
    html, body {
        margin: 0;
        padding: 0;
        overflow-x: hidden; /* NOT overflow: hidden — that blocks scrolling */
    }

    .navbar,
    .progress-bar,
    .hero-content,
    .scroll-indicator {
        display: none !important;
    }

    .hero {
        position: relative !important; /* NOT fixed — fixed blocks scrolling */
        width: 100vw !important;
        height: calc(var(--vh, 1vh) * 100) !important;
        min-height: calc(var(--vh, 1vh) * 100) !important;
        max-height: calc(var(--vh, 1vh) * 100) !important;
        padding: 0 !important;
        z-index: 0 !important;
    }

    .hero-video {
        position: absolute !important;
        top: 0 !important;
        left: 0 !important;
        width: 100% !important;
        height: 100% !important;
        object-fit: cover !important;
    }

    .hero-overlay {
        background: transparent;
    }

    .content-section:first-of-type {
        margin-top: 0 !important; /* No longer needed since hero is not fixed */
    }
}

.unmute-btn {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 99999;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border: 2px solid white;
    padding: 12px 28px;
    border-radius: 999px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    backdrop-filter: blur(6px);
}

.hero-title {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    color: var(--accent-blue);
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.8);
}

@media (max-width: 768px) {
    .hero-title {
        font-size: var(--font-size-2xl);
    }
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-light);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.8);
}

@media (max-width: 768px) {
    .hero-subtitle {
        font-size: var(--font-size-base);
    }
}

.hero-description {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-xl);
    color: var(--text-muted);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8);
}

/* ============================================
   BUTTONS
   ============================================ */

.cta-button {
    background: linear-gradient(135deg, var(--accent-blue), #0088dd);
    color: white;
    border: none;
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
    font-weight: 700;
    border-radius: 8px;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: 0 8px 24px rgba(0, 153, 255, 0.3);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.cta-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 32px rgba(0, 153, 255, 0.5);
    background: linear-gradient(135deg, #00ccff, #0099ff);
}

.cta-button:active {
    transform: translateY(-1px);
}

/* Unmute button (mobile prompt) */
.unmute-btn {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 99999;
    background: rgba(0, 0, 0, 0.7);
    color: white;
    border: 2px solid white;
    padding: 12px 28px;
    border-radius: 999px;
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    backdrop-filter: blur(6px);
}

/* ============================================
   SCROLL INDICATOR
   ============================================ */

.scroll-indicator {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    text-align: center;
    animation: float 3s ease-in-out infinite;
}

.scroll-arrow {
    font-size: 1.5rem;
    animation: bounce 2s ease-in-out infinite;
}

@keyframes float {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

@keyframes bounce {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(10px);
    }
}

/* Unmute / Play Button */
.unmute-button {
    position: absolute;
    z-index: 1004;
    right: 24px;
    bottom: 24px;
    background: rgba(0,0,0,0.6);
    color: var(--text-light);
    border: 1px solid rgba(255,255,255,0.08);
    padding: 0.6rem 0.9rem;
    border-radius: 999px;
    font-weight: 700;
    cursor: pointer;
    backdrop-filter: blur(6px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.unmute-button:hover {
    transform: translateY(-4px);
}

/* When user chooses to focus on video, hide overlay and hero content for a clear view */
.hero.video-focused .hero-overlay {
    opacity: 0 !important;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.hero.video-focused .hero-content {
    opacity: 0 !important;
    pointer-events: none;
    transition: opacity 0.4s ease;
}

/* ============================================
   SECTION STRUCTURE
   ============================================ */

.content-section {
    padding: var(--spacing-xxl) 0;
    border-bottom: 1px solid rgba(0, 153, 255, 0.1);
}

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

.section-header {
    text-align: center;
    margin-bottom: var(--spacing-xxl);
}

.section-title {
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-amber));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   WHAT IS QR CODE PHISHING SECTION
   ============================================ */

.section-what {
    background: linear-gradient(180deg, var(--primary-dark) 0%, rgba(10, 13, 18, 0.8) 100%);
}

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

.info-card {
    background: var(--card-bg);
    padding: var(--spacing-lg);
    border-radius: 12px;
    border: 1px solid rgba(0, 153, 255, 0.2);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
    text-align: center;
}

.info-card:hover {
    border-color: var(--accent-blue);
    box-shadow: 0 8px 24px rgba(0, 153, 255, 0.2);
    transform: translateY(-8px);
}

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

.info-card h3 {
    margin-bottom: var(--spacing-md);
    color: var(--accent-blue);
}

.info-card p {
    color: var(--text-muted);
    line-height: 1.8;
}

/* ============================================
   DANGERS SECTION
   ============================================ */

.section-dangers {
    background: linear-gradient(180deg, rgba(10, 13, 18, 0.8) 0%, var(--primary-darker) 100%);
}

.danger-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
}

.danger-card {
    background: linear-gradient(135deg, rgba(15, 20, 25, 0.8), rgba(26, 31, 46, 0.8));
    padding: var(--spacing-lg);
    border-radius: 12px;
    border-left: 4px solid var(--accent-red);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.danger-card:hover {
    border-left-color: var(--accent-amber);
    background: linear-gradient(135deg, rgba(20, 25, 35, 0.9), rgba(30, 35, 50, 0.9));
    box-shadow: 0 12px 32px rgba(255, 51, 51, 0.2);
    transform: translateX(8px);
}

.danger-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.danger-card h3 {
    margin-bottom: var(--spacing-md);
    color: var(--accent-red);
    font-size: var(--font-size-lg);
}

.danger-card p {
    color: var(--text-muted);
    line-height: 1.8;
    font-size: var(--font-size-sm);
}

/* ============================================
   WARNINGS SECTION
   ============================================ */

.section-warnings {
    background: linear-gradient(180deg, var(--primary-darker) 0%, rgba(10, 13, 18, 0.6) 100%);
}

.warnings-list {
    max-width: 800px;
    margin: 0 auto;
}

.warning-item {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: var(--card-bg);
    border-radius: 12px;
    border-left: 4px solid var(--accent-amber);
    transition: all var(--transition-normal);
}

.warning-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(8px);
    background: rgba(26, 31, 46, 0.8);
}

.warning-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 50px;
    height: 50px;
    background: var(--accent-amber);
    color: var(--primary-dark);
    border-radius: 50%;
    font-weight: 700;
    font-size: var(--font-size-lg);
    flex-shrink: 0;
}

.warning-content h4 {
    margin-bottom: var(--spacing-sm);
    color: var(--accent-amber);
}

.warning-content p {
    color: var(--text-muted);
    line-height: 1.8;
}

/* ============================================
   SAFETY TIPS SECTION
   ============================================ */

.section-safety {
    background: linear-gradient(180deg, rgba(10, 13, 18, 0.6) 0%, var(--primary-dark) 100%);
}

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

.tip-card {
    background: linear-gradient(135deg, rgba(0, 153, 255, 0.05), rgba(0, 153, 255, 0.02));
    padding: var(--spacing-lg);
    border-radius: 12px;
    border: 1px solid rgba(0, 153, 255, 0.2);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.tip-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 153, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.tip-card:hover::before {
    left: 100%;
}

.tip-card:hover {
    border-color: var(--accent-blue);
    box-shadow: 0 8px 24px rgba(0, 153, 255, 0.2);
    transform: translateY(-8px);
}

.tip-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--accent-blue);
    color: white;
    border-radius: 50%;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-lg);
}

.tip-card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--accent-blue);
    font-size: var(--font-size-lg);
}

.tip-card p {
    color: var(--text-muted);
    line-height: 1.8;
    font-size: var(--font-size-sm);
}

/* ============================================
   CLOSING SECTION
   ============================================ */

.closing-section {
    background: linear-gradient(135deg, var(--primary-darker) 0%, rgba(0, 20, 40, 0.8) 100%);
    padding: var(--spacing-xxl) var(--spacing-lg);
    text-align: center;
}

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

.closing-title {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-red), var(--accent-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-lg);
    font-size: var(--font-size-3xl);
}

.closing-message {
    font-size: var(--font-size-lg);
    color: var(--text-light);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
}

.closing-message strong {
    color: var(--accent-red);
}

.closing-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.stat {
    background: rgba(0, 153, 255, 0.05);
    padding: var(--spacing-lg);
    border-radius: 12px;
    border: 1px solid rgba(0, 153, 255, 0.2);
    transition: all var(--transition-normal);
}

.stat:hover {
    background: rgba(0, 153, 255, 0.1);
    border-color: var(--accent-blue);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-blue);
    margin-bottom: var(--spacing-sm);
}

.stat p {
    color: var(--text-muted);
    font-size: var(--font-size-sm);
}

/* ============================================
   BACK TO TOP BUTTON
   ============================================ */

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--accent-blue);
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    z-index: 900;
    display: none;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-md);
}

.back-to-top.show {
    display: flex;
}

.back-to-top:hover {
    background: var(--accent-red);
    transform: scale(1.1);
    box-shadow: var(--shadow-lg);
}

@media (max-width: 768px) {
    .back-to-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
        font-size: 1.2rem;
    }
}

/* ============================================
   FOOTER
   ============================================ */

.footer {
    background: var(--primary-darker);
    border-top: 1px solid rgba(0, 153, 255, 0.1);
    padding: var(--spacing-xl) var(--spacing-lg);
    text-align: center;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.footer-content p {
    color: var(--text-muted);
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    margin: 0 var(--spacing-md);
    color: var(--accent-blue);
}

/* ============================================
   ANIMATIONS
   ============================================ */

@keyframes fadeUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInFromLeft {
    from {
        opacity: 0;
        transform: translateX(-40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInFromRight {
    from {
        opacity: 0;
        transform: translateX(40px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.fade-up {
    opacity: 0;
    animation: fadeUp 0.6s ease var(--delay, 0s) forwards;
}

.slide-in-left {
    opacity: 0;
    animation: slideInFromLeft 0.6s ease var(--delay, 0s) forwards;
}

.slide-in-right {
    opacity: 0;
    animation: slideInFromRight 0.6s ease var(--delay, 0s) forwards;
}

@keyframes fadeInScale {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

.animate-on-load {
    opacity: 0;
    animation: fadeInScale 0.8s ease var(--delay, 0s) forwards;
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    :root {
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.75rem;
        --font-size-2xl: 1.5rem;
        --spacing-xxl: 2rem;
        --spacing-xl: 1.5rem;
    }

    .navbar-container {
        padding: 0 var(--spacing-md);
    }

    .navbar-menu {
        gap: var(--spacing-md);
        font-size: var(--font-size-sm);
    }

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

    .section-container {
        padding: 0 var(--spacing-md);
    }

    .section-header {
        margin-bottom: var(--spacing-xl);
    }

    .danger-grid,
    .content-grid,
    .safety-tips {
        grid-template-columns: 1fr;
    }

    .warning-item {
        flex-direction: column;
        text-align: center;
    }

    .warning-number {
        margin: 0 auto var(--spacing-md);
    }

    .closing-stats {
        grid-template-columns: 1fr;
    }

    .scroll-indicator {
        display: none;
    }
}

@media (max-width: 480px) {
    .navbar-logo {
        font-size: 0.875rem;
    }

    .navbar-menu {
        gap: var(--spacing-sm);
    }

    .nav-link {
        font-size: 0.75rem;
        padding: var(--spacing-xs) 0.5rem;
    }

    .hero-title {
        font-size: var(--font-size-2xl);
    }

    .hero-subtitle {
        font-size: var(--font-size-sm);
    }

    .cta-button {
        padding: var(--spacing-md) var(--spacing-lg);
        font-size: var(--font-size-sm);
    }

    .section-title {
        font-size: var(--font-size-2xl);
    }

    .section-subtitle {
        font-size: var(--font-size-base);
    }
}

/* Strong mobile fullscreen override */
@media (max-width: 768px) {
    html, body {
        margin: 0;
        padding: 0;
        overflow-x: hidden;
    }

    .navbar,
    .progress-bar,
    .hero-content,
    .scroll-indicator {
        display: none !important;
    }

    .hero {
        position: relative !important;
        top: 0 !important;
        left: 0 !important;
        width: 100vw !important;
        height: calc(var(--vh, 1vh) * 100) !important;
        min-height: calc(var(--vh, 1vh) * 100) !important;
        max-height: calc(var(--vh, 1vh) * 100) !important;
        z-index: 9999 !important;
        padding: 0 !important;
    }

    .hero-video {
        position: absolute !important;
        top: 0 !important;
        left: 0 !important;
        width: 100vw !important;
        height: 100% !important;
        object-fit: cover !important;
    }

    .hero-overlay {
        background: transparent !important;
    }

    /* This pushes ALL content below the fullscreen video */
    body > *:not(.hero) {
        position: relative;
        z-index: 1;
    }

    .content-section:first-of-type,
    section:not(.hero):first-of-type {
        margin-top: calc(var(--vh, 1vh) * 100) !important;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
    .navbar,
    .progress-bar,
    .scroll-indicator,
    .back-to-top {
        display: none;
    }

    body {
        background: white;
        color: black;
    }

    .content-section {
        page-break-inside: avoid;
    }
}