/* ============================================
   Study Guardian Website - Premium SaaS Design
   ============================================ */

/* CSS Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

:root {
    /* Colors - Matching App Theme */
    --bg: #0d0d0f;
    --bg-secondary: #131317;
    --surface: #16161a;
    --surface-hover: #1e1e26;
    --accent: #7f5af0;
    --accent-light: #9d7afa;
    --accent-glow: rgba(127, 90, 240, 0.4);
    --green: #2cb67d;
    --green-glow: rgba(44, 182, 125, 0.3);
    --danger: #ef4565;
    --text: #fffffe;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --border: rgba(255, 255, 255, 0.08);
    --border-light: rgba(255, 255, 255, 0.12);

    /* Typography */
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Space Mono', monospace;

    /* Spacing */
    --container-max: 1200px;
    --section-padding: 120px;
    --nav-height: 80px;

    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-fast: all 0.15s ease;
}

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

body {
    font-family: var(--font-primary);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.03em;
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Container */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(13, 13, 15, 0.8);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text);
    font-weight: 700;
    font-size: 1.1rem;
}

.logo-icon {
    width: 36px;
    height: 36px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 40px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    transition: var(--transition-fast);
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition-fast);
}

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

.nav-cta {
    background: var(--accent);
    color: var(--text) !important;
    padding: 10px 24px !important;
    border-radius: 999px;
    font-weight: 600 !important;
    transition: var(--transition) !important;
}

.nav-cta::after { display: none !important; }

.nav-cta:hover {
    background: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--accent-glow);
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.mobile-menu-btn span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--text);
    transition: var(--transition);
}

.mobile-menu {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 20px;
    flex-direction: column;
    gap: 16px;
    z-index: 999;
}

.mobile-menu.active {
    display: flex;
}

.mobile-menu a {
    color: var(--text-secondary);
    text-decoration: none;
    padding: 12px 16px;
    border-radius: 8px;
    transition: var(--transition);
}

.mobile-menu a:hover {
    background: var(--surface-hover);
    color: var(--text);
}

.mobile-menu .nav-cta {
    text-align: center;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    min-height: 100vh;
    padding: calc(var(--nav-height) + 60px) 0 80px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    overflow: hidden;
    z-index: 0;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(100px);
    opacity: 0.3;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: var(--accent);
    top: -200px;
    right: -100px;
    animation: float 20s ease-in-out infinite;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--accent-light);
    bottom: -100px;
    left: -100px;
    animation: float 15s ease-in-out infinite reverse;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    50% { transform: translate(30px, -30px) scale(1.05); }
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(circle at center, black 40%, transparent 80%);
    -webkit-mask-image: radial-gradient(circle at center, black 40%, transparent 80%);
}

.hero .container {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
}

.hero-content {
    max-width: 600px;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px;
    background: rgba(127, 90, 240, 0.1);
    border: 1px solid rgba(127, 90, 240, 0.2);
    border-radius: 999px;
    font-size: 0.85rem;
    color: var(--accent);
    margin-bottom: 28px;
    animation: fadeInUp 0.6s ease;
}

.badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--green);
    box-shadow: 0 0 10px var(--green);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero-title {
    font-size: clamp(3rem, 6vw, 4.5rem);
    font-weight: 800;
    line-height: 1.05;
    margin-bottom: 24px;
    animation: fadeInUp 0.6s ease 0.1s backwards;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 40px;
    line-height: 1.6;
    animation: fadeInUp 0.6s ease 0.2s backwards;
}

.hero-cta {
    display: flex;
    gap: 16px;
    margin-bottom: 60px;
    flex-wrap: wrap;
    animation: fadeInUp 0.6s ease 0.3s backwards;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    padding: 14px 32px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 999px;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-family: var(--font-primary);
}

.btn-primary {
    background: var(--accent);
    color: var(--text);
    box-shadow: 0 6px 24px var(--accent-glow);
}

.btn-primary:hover {
    background: var(--accent-light);
    transform: translateY(-3px);
    box-shadow: 0 12px 32px var(--accent-glow);
}

.btn-secondary {
    background: var(--surface);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--surface-hover);
    border-color: var(--accent);
    transform: translateY(-2px);
}

.btn-large {
    padding: 18px 40px;
    font-size: 1.05rem;
}

.btn-xlarge {
    padding: 20px 48px;
    font-size: 1.15rem;
}

.btn-full {
    width: 100%;
    justify-content: center;
}

.hero-stats {
    display: flex;
    align-items: center;
    gap: 32px;
    animation: fadeInUp 0.6s ease 0.4s backwards;
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.stat-number {
    font-family: var(--font-mono);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
}

/* Hero Visual */
.hero-visual {
    position: relative;
    animation: fadeInRight 0.8s ease 0.3s backwards;
}

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

.app-preview {
    position: relative;
}

.app-window {
    background: var(--surface);
    border-radius: 16px;
    border: 1px solid var(--border);
    box-shadow: 0 32px 64px rgba(0, 0, 0, 0.6), 0 0 0 1px rgba(255, 255, 255, 0.05);
    overflow: hidden;
}

.window-header {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

.window-controls {
    display: flex;
    gap: 8px;
}

.control {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.control.close { background: var(--danger); }
.control.minimize { background: #f5a623; }
.control.maximize { background: var(--green); }

.window-title {
    flex: 1;
    text-align: center;
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    letter-spacing: 1px;
}

.app-screenshot {
    width: 100%;
    height: 420px;
    background: var(--bg);
    position: relative;
    overflow: hidden;
}

.app-screenshot img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.preview-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--bg) 0%, var(--surface) 100%);
}

.preview-animation {
    position: relative;
    width: 120px;
    height: 120px;
}

.preview-ring {
    position: absolute;
    inset: 0;
    border: 3px solid var(--border);
    border-radius: 50%;
    animation: ringPulse 2s ease-in-out infinite;
}

.preview-ring::before {
    content: '';
    position: absolute;
    inset: -3px;
    border: 3px solid transparent;
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes ringPulse {
    0%, 100% { transform: scale(1); opacity: 0.6; }
    50% { transform: scale(1.1); opacity: 1; }
}

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

.preview-char {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 48px;
    animation: float 3s ease-in-out infinite;
}

/* Floating Cards */
.floating-card {
    position: absolute;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 16px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.5);
    animation: floatCard 6s ease-in-out infinite;
}

.card-1 {
    top: 80px;
    right: -40px;
    animation-delay: 0s;
}

.card-2 {
    bottom: 100px;
    left: -60px;
    animation-delay: 3s;
}

@keyframes floatCard {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-15px); }
}

.card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    margin-bottom: 12px;
}

.card-icon.green {
    background: rgba(44, 182, 125, 0.1);
    color: var(--green);
}

.card-content {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.card-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.card-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text);
}

/* Timer Preview */
.timer-preview {
    position: relative;
    width: 70px;
    height: 70px;
}

.timer-ring {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.timer-track {
    fill: none;
    stroke: var(--border);
    stroke-width: 3;
}

.timer-fill {
    fill: none;
    stroke: var(--green);
    stroke-width: 3;
    stroke-linecap: round;
    stroke-dasharray: 126, 126;
    animation: dash 3s ease-in-out infinite;
}

@keyframes dash {
    0% { stroke-dashoffset: 126; }
    50% { stroke-dashoffset: 20; }
    100% { stroke-dashoffset: 126; }
}

.timer-text {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-mono);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--green);
}

/* ============================================
   Section Styles
   ============================================ */
section {
    padding: var(--section-padding) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 80px;
}

.section-tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(127, 90, 240, 0.1);
    border: 1px solid rgba(127, 90, 240, 0.2);
    border-radius: 999px;
    font-size: 0.85rem;
    color: var(--accent);
    font-weight: 600;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: 16px;
}

.section-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ============================================
   Features Section
   ============================================ */
.features {
    background: var(--bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
    gap: 24px;
}

.feature-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px;
    transition: var(--transition);
}

.feature-card:hover {
    background: var(--surface-hover);
    border-color: var(--accent);
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(127, 90, 240, 0.15);
}

.feature-icon {
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(127, 90, 240, 0.1);
    border-radius: 12px;
    color: var(--accent);
    margin-bottom: 20px;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ============================================
   How It Works Section
   ============================================ */
.steps {
    display: flex;
    flex-direction: column;
    gap: 60px;
    max-width: 900px;
    margin: 0 auto;
}

.step {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 40px;
    align-items: start;
    padding: 40px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    transition: var(--transition);
}

.step:hover {
    border-color: var(--accent);
    box-shadow: 0 8px 32px rgba(127, 90, 240, 0.1);
}

.step-number {
    font-family: var(--font-mono);
    font-size: 3rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.step-content h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.step-content p {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

.step-visual {
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-icon {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(127, 90, 240, 0.1);
    border-radius: 50%;
    color: var(--accent);
}

.step-status {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    background: var(--bg-secondary);
    border-radius: 999px;
    border: 1px solid var(--border);
}

.green-pulse {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--green);
    box-shadow: 0 0 12px var(--green);
    animation: pulse 2s infinite;
}

.status-text {
    font-family: var(--font-mono);
    font-size: 0.9rem;
    color: var(--text);
}

.countdown-preview {
    font-family: var(--font-mono);
    font-size: 2rem;
    font-weight: 700;
    color: var(--danger);
    padding: 16px 24px;
    background: rgba(239, 69, 101, 0.1);
    border: 1px solid rgba(239, 69, 101, 0.3);
    border-radius: 12px;
    animation: countPulse 1s ease-in-out infinite;
}

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

/* ============================================
   Pricing Section
   ============================================ */
.pricing {
    background: var(--bg-secondary);
}

.pricing-card {
    max-width: 500px;
    margin: 0 auto;
    background: var(--surface);
    border: 2px solid var(--accent);
    border-radius: 24px;
    padding: 48px;
    position: relative;
    overflow: hidden;
}

.pricing-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent), var(--accent-light));
}

.pricing-header {
    text-align: center;
    margin-bottom: 32px;
}

.pricing-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(44, 182, 125, 0.1);
    border: 1px solid rgba(44, 182, 125, 0.3);
    border-radius: 999px;
    font-size: 0.85rem;
    color: var(--green);
    font-weight: 600;
    margin-bottom: 16px;
}

.pricing-header h3 {
    font-size: 2rem;
    margin-bottom: 8px;
}

.pricing-description {
    color: var(--text-secondary);
}

.pricing-price {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--border);
}

.price-amount {
    font-family: var(--font-mono);
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--accent);
}

.price-period {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-left: 8px;
}

.pricing-features {
    list-style: none;
    margin-bottom: 40px;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--border);
}

.pricing-features li:last-child {
    border-bottom: none;
}

.pricing-features svg {
    color: var(--green);
    flex-shrink: 0;
}

.pricing-cta {
    margin-bottom: 16px;
}

.pricing-note {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.coming-soon-banner {
    margin-top: 40px;
    padding: 24px;
    background: linear-gradient(135deg, rgba(127, 90, 240, 0.1), rgba(157, 122, 250, 0.05));
    border: 1px solid rgba(127, 90, 240, 0.2);
    border-radius: 16px;
}

.banner-content {
    display: flex;
    align-items: center;
    gap: 16px;
    max-width: 800px;
    margin: 0 auto;
    color: var(--text-secondary);
}

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

.banner-content strong {
    color: var(--text);
}

/* ============================================
   Download Section
   ============================================ */
.download-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
    align-items: center;
    max-width: 1100px;
    margin: 0 auto;
}

.download-content h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

.download-content p {
    color: var(--text-secondary);
    font-size: 1.15rem;
    margin-bottom: 32px;
    line-height: 1.6;
}

.system-requirements {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
}

.system-requirements h4 {
    font-size: 1rem;
    margin-bottom: 16px;
    color: var(--text);
}

.system-requirements ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.system-requirements li {
    color: var(--text-secondary);
    font-size: 0.95rem;
    padding-left: 24px;
    position: relative;
}

.system-requirements li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--green);
    font-weight: 700;
}

.download-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 24px;
    padding: 48px;
    text-align: center;
    position: relative;
}

.download-card::before {
    content: '';
    position: absolute;
    inset: -1px;
    background: linear-gradient(135deg, var(--accent), var(--accent-light));
    border-radius: 24px;
    opacity: 0.2;
    z-index: -1;
}

.download-icon {
    color: var(--accent);
    margin-bottom: 24px;
}

.download-card h3 {
    font-size: 1.75rem;
    margin-bottom: 8px;
}

.download-version {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 16px;
}

.download-size {
    font-family: var(--font-mono);
    font-size: 1.25rem;
    color: var(--accent);
    margin-bottom: 32px;
}

.download-note {
    margin-top: 16px;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.checksum {
    margin-top: 24px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 12px;
}

.checksum small {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.checksum code {
    font-family: var(--font-mono);
    font-size: 0.85rem;
    color: var(--text-secondary);
    background: var(--bg);
    padding: 4px 10px;
    border-radius: 6px;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    padding: 80px 0 40px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: 80px;
    margin-bottom: 60px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    color: var(--text);
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 16px;
}

.footer-brand p {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: 0.95rem;
}

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.footer-column h4 {
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-column ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-column a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: var(--transition-fast);
}

.footer-column a:hover {
    color: var(--text);
}

.footer-bottom {
    padding-top: 32px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-tagline {
    font-family: var(--font-mono);
    font-size: 0.85rem;
}

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

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        gap: 60px;
    }

    .hero-content {
        max-width: 100%;
        text-align: center;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-visual {
        max-width: 600px;
        margin: 0 auto;
    }

    .floating-card.card-1 {
        right: 20px;
    }

    .floating-card.card-2 {
        left: 20px;
    }

    .download-wrapper {
        grid-template-columns: 1fr;
        gap: 60px;
    }

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

    .system-requirements {
        max-width: 400px;
        margin: 0 auto;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .footer-links {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --section-padding: 80px;
    }

    .nav-links {
        display: none;
    }

    .mobile-menu-btn {
        display: flex;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 20px;
    }

    .stat-divider {
        display: none;
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .step {
        grid-template-columns: 1fr;
        gap: 20px;
        text-align: center;
    }

    .step-number {
        font-size: 2rem;
    }

    .footer-links {
        grid-template-columns: 1fr 1fr;
        gap: 32px;
    }

    .footer-bottom {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 20px;
    }

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

    .hero-cta {
        flex-direction: column;
    }

    .btn-large {
        width: 100%;
        justify-content: center;
    }

    .pricing-card {
        padding: 32px 24px;
    }

    .price-amount {
        font-size: 2.5rem;
    }

    .footer-links {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Utility Classes
   ============================================ */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* Smooth scrolling offset for fixed nav */
html {
    scroll-padding-top: calc(var(--nav-height) + 20px);
}