/* ============================================
   WEBTOON READER - LANDING PAGE STYLESHEET
   Netflix-Inspired Design
   ============================================ */

/* ============================================
   CSS VARIABLES - Easy Customization
   ============================================ */
:root {
    /* Netflix Color Palette */
    --color-bg: #0C0C0D;
    --color-bg-secondary: #1A1A1B;
    --color-primary: #E50914;
    --color-primary-dark: #B20710;
    --color-primary-glow: rgba(229, 9, 20, 0.4);
    --color-text: #FFFFFF;
    --color-text-secondary: #B5B5B6;
    --color-text-muted: #808080;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #E50914 0%, #B20710 100%);
    --gradient-card: linear-gradient(180deg, #1A1A1B 0%, #0F0F10 100%);
    --gradient-overlay: linear-gradient(180deg, rgba(12, 12, 13, 0) 0%, rgba(12, 12, 13, 0.9) 100%);

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px var(--color-primary-glow);
    --shadow-glow-lg: 0 0 40px var(--color-primary-glow);

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;

    /* Transitions */
    --transition-fast: 200ms ease;
    --transition-normal: 300ms ease;
    --transition-slow: 500ms ease;

    /* Z-index */
    --z-loading: 9999;
    --z-modal: 1000;
    --z-navbar: 100;
    --z-back-to-top: 90;
}

/* ============================================
   GLOBAL RESET & BASE STYLES
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================
   LOADING SCREEN
   ============================================ */
#loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--color-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-loading);
    transition: opacity 0.5s, visibility 0.5s;
}

#loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.loader {
    text-align: center;
}

.spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(229, 9, 20, 0.1);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

.loader p {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    letter-spacing: 2px;
    text-transform: uppercase;
}

/* ============================================
   CONTAINER & LAYOUT
   ============================================ */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

@media (min-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 var(--spacing-lg);
    }
}

/* ============================================
   NAVIGATION BAR
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: rgba(12, 12, 13, 0.95);
    backdrop-filter: blur(10px);
    z-index: var(--z-navbar);
    transition: background var(--transition-normal), box-shadow var(--transition-normal);
}

.navbar.scrolled {
    background: rgba(12, 12, 13, 0.98);
    box-shadow: var(--shadow-md);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-primary);
    letter-spacing: 1px;
}

.logo-text {
    font-family: 'Orbitron', monospace;
    font-weight: 900;
    letter-spacing: 3px;
    font-size: 1.5rem;
    text-shadow: 0 0 10px rgba(229, 9, 20, 0.8);
}

.logo-img {
    width: 50px;
    height: auto;
    filter: drop-shadow(0 0 8px rgba(229, 9, 20, 0.8));
    animation: logoGlow 2s ease-in-out infinite;
}

.logo img {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
}

.nav-links {
    display: none;
    gap: 2rem;
}

.nav-links a {
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-primary);
    transition: width var(--transition-normal);
}

.nav-links a:hover {
    color: var(--color-primary);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-download-btn {
    display: none;
    padding: 0.625rem 1.5rem;
    background: var(--gradient-primary);
    color: var(--color-text);
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 0.875rem;
    cursor: pointer;
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.nav-download-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: flex;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    transition: all var(--transition-normal);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
}

.mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* Mobile Menu */
.mobile-menu {
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background: rgba(12, 12, 13, 0.98);
    backdrop-filter: blur(10px);
    padding: 1rem;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
    z-index: var(--z-navbar);
    box-shadow: var(--shadow-lg);
}

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

.mobile-menu a {
    display: block;
    padding: 1rem;
    color: var(--color-text);
    text-decoration: none;
    font-weight: 500;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    transition: color var(--transition-fast), padding-left var(--transition-fast);
}

.mobile-menu a:hover {
    color: var(--color-primary);
    padding-left: 1.5rem;
}

/* Desktop Nav Styles */
@media (min-width: 768px) {
    .nav-links {
        display: flex;
    }

    .nav-download-btn {
        display: block;
    }

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

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 80px;
}

/* Hero Background */
.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

/* Animated Particles */
.particles {
    position: absolute;
    width: 100%;
    height: 100%;
}

/* Manhwa Collage Background */
.manhwa-collage {
    position: absolute;
    width: 100%;
    height: 100%;
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    opacity: 0.15;
}

.manhwa-cover {
    background-size: cover;
    background-position: center;
    filter: blur(8px);
    animation: float 20s ease-in-out infinite;
}

.manhwa-cover:nth-child(1) { animation-delay: 0s; }
.manhwa-cover:nth-child(2) { animation-delay: 2s; }
.manhwa-cover:nth-child(3) { animation-delay: 4s; }
.manhwa-cover:nth-child(4) { animation-delay: 6s; }
.manhwa-cover:nth-child(5) { animation-delay: 8s; }

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.gradient-overlay {
    position: absolute;
    width: 100%;
    height: 100%;
    background: radial-gradient(ellipse at center, rgba(12, 12, 13, 0.7) 0%, rgba(12, 12, 13, 0.95) 100%);
}

/* Hero Content */
.hero-content {
    text-align: center;
    position: relative;
    z-index: 1;
    padding: 2rem 0;
}

.hero-logo-container {
    margin-bottom: 2rem;
    animation: fadeInDown 1s ease;
}

.hero-logo {
    width: auto;
    max-width: 500px;
    height: auto;
    max-height: 200px;
    filter: drop-shadow(0 0 30px rgba(229, 9, 20, 0.9));
}

.hero-logo.heartbeat-glow {
    animation: heartbeatGlow 1.5s ease-in-out infinite, float 3s ease-in-out infinite;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    line-height: 1.2;
    animation: fadeInUp 1s ease;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.typing-animation {
    display: inline-block;
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    margin-bottom: 2.5rem;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 3rem;
}

/* Hero Stats */
.hero-stats {
    display: flex;
    gap: 2rem;
    justify-content: center;
    flex-wrap: wrap;
    padding: 2rem;
    background: rgba(26, 26, 27, 0.5);
    backdrop-filter: blur(10px);
    border-radius: var(--radius-lg);
    border: 1px solid rgba(229, 9, 20, 0.2);
    max-width: 600px;
    margin: 0 auto;
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-size: 2rem;
    font-weight: 800;
    color: var(--color-primary);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-divider {
    width: 1px;
    background: rgba(255, 255, 255, 0.1);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--color-primary);
    border-radius: 12px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--color-primary);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scroll 1.5s infinite;
}

@keyframes scroll {
    0% { opacity: 1; top: 8px; }
    100% { opacity: 0; top: 24px; }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* Responsive Hero */
@media (min-width: 768px) {
    .hero-title {
        font-size: 3.5rem;
    }

    .hero-logo {
        width: 150px;
        height: 150px;
    }
}

@media (min-width: 1024px) {
    .hero-title {
        font-size: 4.5rem;
    }
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 2rem;
    border: none;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-normal);
    white-space: nowrap;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--color-text);
    border: 2px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: var(--color-primary);
}

.btn-glow {
    box-shadow: var(--shadow-glow);
}

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

@keyframes pulse {
    0%, 100% { box-shadow: 0 0 20px var(--color-primary-glow); }
    50% { box-shadow: 0 0 40px var(--color-primary-glow); }
}

.btn-download {
    padding: 1.25rem 3rem;
    font-size: 1.125rem;
    background: var(--gradient-primary);
    color: var(--color-text);
}

.btn-download:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-glow-lg);
}

.btn-github {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.1);
}

.btn-github:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--color-text);
}

/* ============================================
   SECTION STYLES
   ============================================ */
section {
    padding: var(--spacing-xl) 0;
}

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

.section-title {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* ============================================
   FEATURES SECTION
   ============================================ */
.features {
    background: var(--color-bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.feature-card {
    background: var(--gradient-card);
    border: 1px solid rgba(229, 9, 20, 0.1);
    border-radius: var(--radius-lg);
    padding: 2rem;
    transition: all var(--transition-normal);
    cursor: pointer;
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow), var(--shadow-lg);
}

.feature-icon {
    width: 64px;
    height: 64px;
    background: rgba(229, 9, 20, 0.1);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    transition: all var(--transition-normal);
}

.feature-card:hover .feature-icon {
    background: var(--color-primary);
    transform: scale(1.1);
}

.feature-icon svg {
    color: var(--color-primary);
    transition: color var(--transition-normal);
}

.feature-card:hover .feature-icon svg {
    color: var(--color-text);
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

.feature-description {
    color: var(--color-text-secondary);
    line-height: 1.8;
}

@media (min-width: 768px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ============================================
   SCREENSHOTS SECTION
   ============================================ */
.screenshots {
    background: var(--color-bg);
}

.screenshots-wrapper {
    position: relative;
    margin-top: 3rem;
}

.screenshots-scroll {
    display: flex;
    gap: 2rem;
    overflow-x: auto;
    scroll-behavior: smooth;
    padding: 2rem 0;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.screenshots-scroll::-webkit-scrollbar {
    display: none;
}

.screenshot-item {
    flex-shrink: 0;
    cursor: pointer;
    transition: transform var(--transition-normal);
}

.screenshot-item:hover {
    transform: scale(1.05);
}

.phone-frame {
    width: 280px;
    height: 560px;
    background: #1A1A1B;
    border-radius: 2rem;
    padding: 1rem;
    box-shadow: var(--shadow-lg);
    border: 8px solid #2A2A2B;
    position: relative;
    overflow: hidden;
}

.phone-frame::before {
    content: '';
    position: absolute;
    top: 0.5rem;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: #3A3A3B;
    border-radius: 2px;
    z-index: 1;
}

.phone-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 1.5rem;
}

.screenshot-label {
    text-align: center;
    margin-top: 1rem;
    color: var(--color-text-secondary);
    font-weight: 500;
}

/* Screenshot Navigation Arrows */
.screenshot-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 48px;
    height: 48px;
    background: rgba(229, 9, 20, 0.9);
    border: none;
    border-radius: 50%;
    display: none;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    z-index: 10;
}

.screenshot-nav:hover {
    background: var(--color-primary);
    box-shadow: var(--shadow-glow);
}

.screenshot-nav-left {
    left: 1rem;
}

.screenshot-nav-right {
    right: 1rem;
}

@media (min-width: 768px) {
    .screenshot-nav {
        display: flex;
    }
}

/* Screenshot Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: var(--z-modal);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.modal.active {
    display: flex;
}

.modal-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
}

.modal-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    z-index: 1;
}

.modal-close {
    position: absolute;
    top: -3rem;
    right: 0;
    width: 40px;
    height: 40px;
    background: var(--color-primary);
    border: none;
    border-radius: 50%;
    color: var(--color-text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    transform: rotate(90deg);
    box-shadow: var(--shadow-glow);
}

#modal-screenshot {
    max-width: 100%;
    max-height: 70vh;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.modal-nav {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1.5rem;
}

.modal-nav button {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    color: var(--color-text);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-nav button:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

/* ============================================
   DOWNLOAD SECTION
   ============================================ */
.download {
    background: var(--color-bg-secondary);
    position: relative;
    overflow: hidden;
}

.download::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--color-primary-glow) 0%, transparent 70%);
    opacity: 0.3;
    pointer-events: none;
}

.download-content {
    text-align: center;
    position: relative;
    z-index: 1;
}

.download-title {
    font-size: 3rem;
    font-weight: 900;
    margin-bottom: 1rem;
}

.download-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: 3rem;
}

.download-card {
    background: var(--gradient-card);
    border: 1px solid rgba(229, 9, 20, 0.2);
    border-radius: var(--radius-xl);
    padding: 3rem;
    max-width: 900px;
    margin: 0 auto;
    box-shadow: var(--shadow-lg);
}

.download-info {
    margin-bottom: 2.5rem;
}

.download-details {
    display: grid;
    grid-template-columns: 1fr;
    gap: 1.5rem;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.03);
    border-radius: var(--radius-md);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.detail-item svg {
    color: var(--color-primary);
    flex-shrink: 0;
}

.detail-item span {
    color: var(--color-text-secondary);
}

.detail-item strong {
    color: var(--color-text);
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.installation-note {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem;
    background: rgba(229, 9, 20, 0.1);
    border: 1px solid rgba(229, 9, 20, 0.2);
    border-radius: var(--radius-md);
    text-align: left;
}

.installation-note svg {
    color: var(--color-primary);
    flex-shrink: 0;
    margin-top: 2px;
}

.installation-note p {
    color: var(--color-text-secondary);
    font-size: 0.875rem;
    line-height: 1.6;
}

@media (min-width: 768px) {
    .download-details {
        grid-template-columns: repeat(2, 1fr);
    }

    .download-buttons {
        flex-direction: row;
        justify-content: center;
    }
}

/* ============================================
   TRUST & SECURITY SECTION
   ============================================ */
.trust {
    background: linear-gradient(180deg, var(--color-bg) 0%, #1A1A1B 50%, var(--color-bg) 100%);
}

.trust-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

.trust-badge {
    text-align: center;
    padding: 2rem;
    background: var(--gradient-card);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    transition: all var(--transition-normal);
}

.trust-badge:hover {
    transform: translateY(-5px);
    border-color: rgba(0, 255, 0, 0.3);
    box-shadow: 0 8px 32px rgba(0, 255, 0, 0.1);
}

.trust-icon {
    width: 80px;
    height: 80px;
    background: rgba(0, 255, 0, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
    transition: all var(--transition-normal);
}

.trust-badge:hover .trust-icon {
    background: rgba(0, 255, 0, 0.15);
    transform: scale(1.1);
}

.trust-icon svg {
    color: #00FF00;
}

.trust-badge h3 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.trust-badge p {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
}

.virustotal-badge {
    text-align: center;
}

.vt-link {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: rgba(0, 255, 0, 0.1);
    border: 1px solid rgba(0, 255, 0, 0.3);
    border-radius: var(--radius-md);
    color: #00FF00;
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-normal);
}

.vt-link:hover {
    background: rgba(0, 255, 0, 0.15);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(0, 255, 0, 0.2);
}

@media (min-width: 768px) {
    .trust-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .trust-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: #0A0A0B;
    padding: var(--spacing-lg) 0 var(--spacing-md);
    border-top: 1px solid rgba(229, 9, 20, 0.1);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

.footer-column h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--color-primary);
}

.footer-brand {
    font-family: 'Orbitron', monospace;
    font-weight: 900;
    letter-spacing: 3px;
    font-size: 1.75rem;
    text-shadow: 0 0 10px rgba(229, 9, 20, 0.6);
}

.footer-column h4 {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--color-text);
    font-weight: 600;
}

.footer-column p {
    color: var(--color-text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

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

.footer-column ul li {
    margin-bottom: 0.75rem;
}

.footer-column ul li a {
    color: var(--color-text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

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

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text);
    transition: all var(--transition-fast);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    color: var(--color-text-secondary);
    font-size: 0.875rem;
}

.footer-bottom p {
    margin-bottom: 0.5rem;
}

.disclaimer-text {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    font-style: italic;
}

@media (min-width: 768px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .footer-content {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* ============================================
   BACK TO TOP BUTTON
   ============================================ */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--color-primary);
    border: none;
    border-radius: 50%;
    color: var(--color-text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    z-index: var(--z-back-to-top);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--color-primary-dark);
    box-shadow: var(--shadow-glow-lg);
    transform: translateY(-3px);
}

/* ============================================
   ANIMATIONS - Reveal on Scroll
   ============================================ */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}

.fade-in-up {
    animation: fadeInUp 1s ease 0.2s both;
}

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

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

/* ============================================
   KAIRO BRAND ANIMATIONS
   ============================================ */

/* Heartbeat Glow - Logo pulsing effect */
@keyframes heartbeatGlow {
    0%, 100% {
        filter: drop-shadow(0 0 20px rgba(229, 9, 20, 0.8))
                drop-shadow(0 0 40px rgba(229, 9, 20, 0.6));
        transform: scale(1);
    }
    14% {
        filter: drop-shadow(0 0 30px rgba(229, 9, 20, 1))
                drop-shadow(0 0 60px rgba(229, 9, 20, 0.8))
                drop-shadow(0 0 80px rgba(229, 9, 20, 0.6));
        transform: scale(1.05);
    }
    28% {
        filter: drop-shadow(0 0 20px rgba(229, 9, 20, 0.8))
                drop-shadow(0 0 40px rgba(229, 9, 20, 0.6));
        transform: scale(1);
    }
    42% {
        filter: drop-shadow(0 0 35px rgba(229, 9, 20, 1))
                drop-shadow(0 0 70px rgba(229, 9, 20, 0.9))
                drop-shadow(0 0 100px rgba(229, 9, 20, 0.7));
        transform: scale(1.08);
    }
    70% {
        filter: drop-shadow(0 0 20px rgba(229, 9, 20, 0.8))
                drop-shadow(0 0 40px rgba(229, 9, 20, 0.6));
        transform: scale(1);
    }
}

/* Logo Glow - Navbar logo subtle pulse */
@keyframes logoGlow {
    0%, 100% {
        filter: drop-shadow(0 0 6px rgba(229, 9, 20, 0.6));
    }
    50% {
        filter: drop-shadow(0 0 12px rgba(229, 9, 20, 0.9))
                drop-shadow(0 0 20px rgba(229, 9, 20, 0.6));
    }
}

/* ============================================
   RESPONSIVE UTILITIES
   ============================================ */
@media (max-width: 767px) {
    .section-title {
        font-size: 2rem;
    }

    .download-title {
        font-size: 2rem;
    }

    .download-card {
        padding: 1.5rem;
    }

    .phone-frame {
        width: 240px;
        height: 480px;
    }
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
    .navbar,
    .mobile-menu,
    .scroll-indicator,
    .back-to-top,
    .screenshot-nav {
        display: none !important;
    }
}