/* ===== CSS Custom Properties ===== */
:root {
    --bg-primary: #050d1a;
    --bg-secondary: #0a1628;
    --bg-card: rgba(15, 30, 55, 0.6);
    --bg-card-hover: rgba(20, 40, 70, 0.8);
    --text-primary: #e8edf5;
    --text-secondary: #8a9bc0;
    --text-muted: #5a6d8e;
    --accent-cyan: #00d4ff;
    --accent-cyan-dim: rgba(0, 212, 255, 0.15);
    --accent-cyan-glow: rgba(0, 212, 255, 0.4);
    --accent-blue: #3b82f6;
    --accent-purple: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #00d4ff, #3b82f6, #8b5cf6);
    --border-subtle: rgba(100, 140, 200, 0.1);
    --border-accent: rgba(0, 212, 255, 0.25);
    --glass-bg: rgba(10, 22, 40, 0.7);
    --glass-border: rgba(100, 140, 200, 0.12);
    --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.1);
    --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Space Grotesk', 'Inter', sans-serif;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
}

/* ===== Light Theme ===== */
[data-theme="light"] {
    --bg-primary: #f0f4f8;
    --bg-secondary: #e2e8f0;
    --bg-card: rgba(255, 255, 255, 0.7);
    --bg-card-hover: rgba(255, 255, 255, 0.9);
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #94a3b8;
    --accent-cyan: #0891b2;
    --accent-cyan-dim: rgba(8, 145, 178, 0.12);
    --accent-cyan-glow: rgba(8, 145, 178, 0.3);
    --accent-blue: #2563eb;
    --accent-purple: #7c3aed;
    --accent-gradient: linear-gradient(135deg, #0891b2, #2563eb, #7c3aed);
    --border-subtle: rgba(15, 23, 42, 0.08);
    --border-accent: rgba(8, 145, 178, 0.3);
    --glass-bg: rgba(255, 255, 255, 0.6);
    --glass-border: rgba(15, 23, 42, 0.08);
    --shadow-glow: 0 4px 30px rgba(8, 145, 178, 0.1);
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    position: relative;
    transition: background-color 0.4s ease, color 0.4s ease;
}

/* ===== Navbar ===== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 36px;
    background: rgba(5, 13, 26, 0.6);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    border-bottom: 1px solid var(--glass-border);
    transition: background 0.4s ease, border-color 0.4s ease, box-shadow 0.4s ease;
    animation: fadeIn 0.6s ease-out forwards;
}

.navbar.scrolled {
    background: rgba(5, 13, 26, 0.85);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

[data-theme="light"] .navbar {
    background: rgba(240, 244, 248, 0.7);
}

[data-theme="light"] .navbar.scrolled {
    background: rgba(240, 244, 248, 0.9);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.06);
}

/* Nav Brand */
.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
    transition: transform 0.3s ease;
}

.nav-brand:hover {
    transform: scale(1.03);
}

.nav-logo-svg {
    width: 40px;
    height: 40px;
    filter: drop-shadow(0 0 8px rgba(0, 212, 255, 0.25));
    transition: filter 0.3s ease;
}

[data-theme="light"] .nav-logo-svg {
    filter: drop-shadow(0 0 6px rgba(8, 145, 178, 0.2));
}

.nav-brand-text {
    display: flex;
    align-items: baseline;
    gap: 6px;
    font-family: var(--font-display);
}

.nav-brand-law {
    font-size: 1.3rem;
    font-weight: 800;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-brand-with {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 400;
    font-style: italic;
    letter-spacing: 0.03em;
}

.nav-brand-labs {
    font-size: 1.3rem;
    font-weight: 800;
    color: var(--text-primary);
    transition: color 0.4s ease;
}

/* Theme Toggle Button */
.theme-toggle {
    position: relative;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    outline: none;
    -webkit-tap-highlight-color: transparent;
}

.toggle-track {
    width: 56px;
    height: 30px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 100px;
    position: relative;
    transition: background 0.4s ease, border-color 0.4s ease;
    overflow: hidden;
}

.toggle-track::before {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: 100px;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.theme-toggle:hover .toggle-track::before {
    opacity: 0.15;
}

.toggle-thumb {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 22px;
    height: 22px;
    background: var(--accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.4s cubic-bezier(0.68, -0.15, 0.27, 1.15);
    box-shadow: 0 2px 8px rgba(0, 212, 255, 0.3);
}

[data-theme="light"] .toggle-thumb {
    transform: translateX(26px);
    box-shadow: 0 2px 8px rgba(8, 145, 178, 0.3);
}

.icon-sun,
.icon-moon {
    width: 14px;
    height: 14px;
    position: absolute;
    transition: opacity 0.3s ease, transform 0.4s ease;
}

/* Dark mode: show moon, hide sun */
.icon-sun {
    opacity: 0;
    transform: rotate(-90deg) scale(0.5);
    color: #fbbf24;
}

.icon-moon {
    opacity: 1;
    transform: rotate(0deg) scale(1);
    color: #fff;
}

/* Light mode: show sun, hide moon */
[data-theme="light"] .icon-sun {
    opacity: 1;
    transform: rotate(0deg) scale(1);
}

[data-theme="light"] .icon-moon {
    opacity: 0;
    transform: rotate(90deg) scale(0.5);
}

/* ===== Light theme specific overrides ===== */
[data-theme="light"] .brand-law {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
}

[data-theme="light"] .countdown-value {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
}

[data-theme="light"] .tagline-accent {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
}

[data-theme="light"] .notify-btn {
    color: #ffffff;
}

[data-theme="light"] #email-input:focus {
    background: rgba(255, 255, 255, 0.9);
}

[data-theme="light"] .feature-icon svg {
    color: var(--accent-cyan);
}

[data-theme="light"] .social-link:hover {
    color: var(--accent-cyan);
    border-color: var(--border-accent);
    box-shadow: 0 6px 20px rgba(8, 145, 178, 0.12);
}

[data-theme="light"] .badge {
    background: var(--accent-cyan-dim);
    border-color: var(--border-accent);
    color: var(--accent-cyan);
}

[data-theme="light"] .badge-dot {
    background: var(--accent-cyan);
}

[data-theme="light"] .shape {
    opacity: 0.04;
}

/* Global transition for theme switching */
.navbar, .nav-brand-labs, .feature-card, .feature-icon,
.countdown-item, .social-link, .signup-section, #email-input,
.badge, .footer, .description, .tagline, .feature-card h3,
.feature-card p, .countdown-label, .signup-note, .footer p {
    transition: background 0.4s ease, border-color 0.4s ease,
                color 0.4s ease, box-shadow 0.4s ease;
}

/* ===== Particle Canvas ===== */
#particles-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
    pointer-events: none;
}

/* ===== Floating Shapes ===== */
.floating-shapes {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.03;
    filter: blur(80px);
}

.shape-1 {
    width: 600px;
    height: 600px;
    background: var(--accent-cyan);
    top: -200px;
    right: -100px;
    animation: float1 20s ease-in-out infinite;
}

.shape-2 {
    width: 400px;
    height: 400px;
    background: var(--accent-purple);
    bottom: -100px;
    left: -100px;
    animation: float2 25s ease-in-out infinite;
}

.shape-3 {
    width: 300px;
    height: 300px;
    background: var(--accent-blue);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation: float3 18s ease-in-out infinite;
}

.shape-4 {
    width: 200px;
    height: 200px;
    background: var(--accent-cyan);
    top: 30%;
    left: 10%;
    animation: float4 22s ease-in-out infinite;
}

.shape-5 {
    width: 350px;
    height: 350px;
    background: var(--accent-purple);
    top: 10%;
    right: 20%;
    animation: float5 28s ease-in-out infinite;
}

@keyframes float1 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(-30px, 40px) scale(1.1); }
    66% { transform: translate(20px, -20px) scale(0.95); }
}

@keyframes float2 {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(40px, -30px) scale(1.05); }
    66% { transform: translate(-20px, 30px) scale(1.1); }
}

@keyframes float3 {
    0%, 100% { transform: translate(-50%, -50%) scale(1); }
    50% { transform: translate(-50%, -50%) scale(1.2); }
}

@keyframes float4 {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(30px, -40px); }
}

@keyframes float5 {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(-40px, 30px) rotate(10deg); }
}

/* ===== Main Container ===== */
.main-container {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    padding: 90px 24px 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
}

/* ===== Logo Section ===== */
.logo-section {
    text-align: center;
    margin-bottom: 48px;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease-out 0.2s forwards;
}

.logo-icon {
    width: 100px;
    height: 100px;
    margin: 0 auto 24px;
    position: relative;
}

.logo-svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 0 20px rgba(0, 212, 255, 0.3));
}

.circuit-node {
    animation: pulse-node 2s ease-in-out infinite;
}

@keyframes pulse-node {
    0%, 100% { opacity: 0.6; r: 2; }
    50% { opacity: 1; r: 3; }
}

.brand-name {
    font-family: var(--font-display);
    font-size: 3.2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.1;
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 12px;
}

.brand-law {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-weight: 800;
}

.brand-with {
    font-size: 1.4rem;
    color: var(--text-muted);
    font-weight: 400;
    font-style: italic;
    letter-spacing: 0.05em;
}

.brand-labs {
    color: var(--text-primary);
    font-weight: 800;
}

/* ===== Tagline Section ===== */
.tagline-section {
    text-align: center;
    margin-bottom: 48px;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease-out 0.4s forwards;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 20px;
    background: var(--accent-cyan-dim);
    border: 1px solid var(--border-accent);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    color: var(--accent-cyan);
    margin-bottom: 28px;
    text-transform: uppercase;
}

.badge-dot {
    width: 6px;
    height: 6px;
    background: var(--accent-cyan);
    border-radius: 50%;
    animation: badge-pulse 2s ease-in-out infinite;
}

@keyframes badge-pulse {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0, 212, 255, 0.4); }
    50% { opacity: 0.6; box-shadow: 0 0 0 6px rgba(0, 212, 255, 0); }
}

.tagline {
    font-family: var(--font-display);
    font-size: 2.8rem;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.02em;
    color: var(--text-primary);
    margin-bottom: 20px;
}

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

.description {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--text-secondary);
    max-width: 640px;
    margin: 0 auto;
}

/* ===== Countdown Section ===== */
.countdown-section {
    margin-bottom: 48px;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease-out 0.6s forwards;
}

.countdown-container {
    display: flex;
    align-items: center;
    gap: 8px;
}

.countdown-item {
    text-align: center;
    padding: 20px 24px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    min-width: 90px;
    transition: transform 0.3s ease, border-color 0.3s ease;
}

.countdown-item:hover {
    transform: translateY(-4px);
    border-color: var(--border-accent);
}

.countdown-value {
    font-family: var(--font-display);
    font-size: 2.6rem;
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
    margin-bottom: 6px;
}

.countdown-label {
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
}

.countdown-separator {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-muted);
    opacity: 0.4;
    padding-bottom: 16px;
    animation: separator-blink 1s ease-in-out infinite;
}

@keyframes separator-blink {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 0.1; }
}

/* ===== Signup Section ===== */
.signup-section {
    width: 100%;
    max-width: 520px;
    margin-bottom: 64px;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease-out 0.8s forwards;
}

.signup-form {
    display: flex;
    gap: 12px;
    width: 100%;
}

.input-wrapper {
    flex: 1;
    position: relative;
}

.input-icon {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: var(--text-muted);
    pointer-events: none;
    transition: color 0.3s ease;
}

#email-input {
    width: 100%;
    padding: 16px 16px 16px 46px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 0.95rem;
    color: var(--text-primary);
    outline: none;
    transition: border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

#email-input::placeholder {
    color: var(--text-muted);
}

#email-input:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px var(--accent-cyan-dim), var(--shadow-glow);
    background: rgba(10, 22, 40, 0.9);
}

#email-input:focus + .input-icon,
.input-wrapper:focus-within .input-icon {
    color: var(--accent-cyan);
}

.notify-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 16px 28px;
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-primary);
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--bg-primary);
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.3s ease, opacity 0.3s ease;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

.notify-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.5s ease;
}

.notify-btn:hover::before {
    left: 100%;
}

.notify-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.3);
}

.notify-btn:active {
    transform: translateY(0);
}

.btn-icon svg {
    width: 16px;
    height: 16px;
    transition: transform 0.3s ease;
}

.notify-btn:hover .btn-icon svg {
    transform: translateX(3px);
}

.signup-note {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 14px;
}

.success-message {
    display: none;
    align-items: center;
    gap: 10px;
    padding: 16px 24px;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: var(--radius-md);
    margin-top: 16px;
    animation: fadeInUp 0.5s ease-out;
}

.success-message svg {
    width: 22px;
    height: 22px;
    color: var(--accent-cyan);
    flex-shrink: 0;
}

.success-message span {
    font-size: 0.9rem;
    color: var(--accent-cyan);
    font-weight: 500;
}

.success-message.show {
    display: flex;
}

/* ===== Features Section ===== */
.features-section {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    width: 100%;
    margin-bottom: 64px;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease-out 1s forwards;
}

.feature-card {
    padding: 32px 24px;
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: transform 0.4s ease, border-color 0.4s ease, background 0.4s ease, box-shadow 0.4s ease;
    position: relative;
    overflow: hidden;
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity 0.4s ease;
}

.feature-card:hover {
    transform: translateY(-6px);
    border-color: var(--border-accent);
    background: var(--bg-card-hover);
    box-shadow: var(--shadow-glow);
}

.feature-card:hover::before {
    opacity: 1;
}

.feature-icon {
    width: 52px;
    height: 52px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-cyan-dim);
    border-radius: var(--radius-md);
    transition: transform 0.3s ease, background 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
    background: rgba(0, 212, 255, 0.2);
}

.feature-icon svg {
    width: 26px;
    height: 26px;
    color: var(--accent-cyan);
}

.feature-card h3 {
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 10px;
}

.feature-card p {
    font-size: 0.85rem;
    line-height: 1.6;
    color: var(--text-secondary);
}

/* ===== Social Section ===== */
.social-section {
    display: flex;
    gap: 16px;
    margin-bottom: 48px;
    opacity: 0;
    transform: translateY(30px);
    animation: fadeInUp 0.8s ease-out 1.2s forwards;
}

.social-link {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    color: var(--text-muted);
    text-decoration: none;
    transition: all 0.3s ease;
    background: var(--glass-bg);
}

.social-link:hover {
    color: var(--accent-cyan);
    border-color: var(--border-accent);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 212, 255, 0.15);
}

.social-link svg {
    width: 18px;
    height: 18px;
}

/* ===== Footer ===== */
.footer {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border-subtle);
    width: 100%;
    opacity: 0;
    animation: fadeIn 0.8s ease-out 1.4s forwards;
}

.footer p {
    font-size: 0.8rem;
    color: var(--text-muted);
    letter-spacing: 0.02em;
}

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

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

/* ===== Responsive Design ===== */

/* Large desktops (1440px+) */
@media (min-width: 1440px) {
    .main-container {
        max-width: 1000px;
    }

    .tagline {
        font-size: 3.2rem;
    }

    .description {
        font-size: 1.15rem;
        max-width: 700px;
    }

    .countdown-value {
        font-size: 3rem;
    }

    .countdown-item {
        min-width: 100px;
        padding: 24px 28px;
    }

    .feature-card {
        padding: 40px 28px;
    }

    .feature-card h3 {
        font-size: 1.15rem;
    }

    .feature-card p {
        font-size: 0.9rem;
    }
}

/* Tablet landscape / small laptops (max 1024px) */
@media (max-width: 1024px) {
    .main-container {
        max-width: 760px;
        padding: 85px 24px 40px;
    }

    .navbar {
        padding: 12px 28px;
    }

    .brand-name {
        font-size: 2.8rem;
    }

    .tagline {
        font-size: 2.4rem;
    }

    .description {
        font-size: 1rem;
    }

    .features-section {
        gap: 16px;
    }

    .feature-card {
        padding: 28px 20px;
    }
}

/* Tablets portrait (max 768px) */
@media (max-width: 768px) {
    .navbar {
        padding: 10px 20px;
    }

    .nav-logo-svg {
        width: 34px;
        height: 34px;
    }

    .nav-brand-law,
    .nav-brand-labs {
        font-size: 1.1rem;
    }

    .nav-brand-with {
        font-size: 0.65rem;
    }

    .toggle-track {
        width: 48px;
        height: 26px;
    }

    .toggle-thumb {
        width: 18px;
        height: 18px;
        top: 3px;
        left: 3px;
    }

    [data-theme="light"] .toggle-thumb {
        transform: translateX(22px);
    }

    .icon-sun, .icon-moon {
        width: 11px;
        height: 11px;
    }

    .main-container {
        padding: 76px 20px 32px;
    }

    .logo-section {
        margin-bottom: 36px;
    }

    .logo-icon {
        width: 85px;
        height: 85px;
        margin-bottom: 20px;
    }

    .brand-name {
        font-size: 2.4rem;
        gap: 8px;
    }

    .brand-with {
        font-size: 1.1rem;
    }

    .tagline-section {
        margin-bottom: 36px;
    }

    .tagline {
        font-size: 2rem;
    }

    .description {
        font-size: 0.95rem;
        line-height: 1.65;
    }

    .countdown-section {
        margin-bottom: 36px;
    }

    .countdown-container {
        gap: 6px;
    }

    .countdown-item {
        padding: 14px 16px;
        min-width: 70px;
        border-radius: var(--radius-md);
    }

    .countdown-value {
        font-size: 2rem;
    }

    .countdown-label {
        font-size: 0.6rem;
    }

    .signup-section {
        margin-bottom: 48px;
    }

    .signup-form {
        flex-direction: column;
    }

    .notify-btn {
        justify-content: center;
        padding: 14px 24px;
    }

    #email-input {
        padding: 14px 14px 14px 44px;
    }

    .features-section {
        grid-template-columns: 1fr;
        gap: 14px;
        margin-bottom: 48px;
    }

    .feature-card {
        padding: 28px 24px;
    }

    .social-section {
        margin-bottom: 36px;
    }

    .social-link {
        width: 42px;
        height: 42px;
    }

    .footer {
        padding-top: 20px;
        padding-bottom: 16px;
    }
}

/* Large phones (max 480px) */
@media (max-width: 480px) {
    .navbar {
        padding: 8px 16px;
    }

    .nav-logo-svg {
        width: 30px;
        height: 30px;
    }

    .nav-brand-law,
    .nav-brand-labs {
        font-size: 1rem;
    }

    .nav-brand-with {
        font-size: 0.6rem;
    }

    .nav-brand {
        gap: 8px;
    }

    .nav-brand-text {
        gap: 4px;
    }

    .toggle-track {
        width: 44px;
        height: 24px;
    }

    .toggle-thumb {
        width: 16px;
        height: 16px;
        top: 3px;
        left: 3px;
    }

    [data-theme="light"] .toggle-thumb {
        transform: translateX(20px);
    }

    .icon-sun, .icon-moon {
        width: 10px;
        height: 10px;
    }

    .main-container {
        padding: 68px 16px 28px;
    }

    .logo-section {
        margin-bottom: 28px;
    }

    .logo-icon {
        width: 72px;
        height: 72px;
        margin-bottom: 16px;
    }

    .brand-name {
        font-size: 1.8rem;
        flex-direction: column;
        gap: 2px;
    }

    .brand-with {
        font-size: 0.85rem;
    }

    .tagline-section {
        margin-bottom: 28px;
    }

    .badge {
        padding: 6px 16px;
        font-size: 0.65rem;
        margin-bottom: 20px;
    }

    .tagline {
        font-size: 1.6rem;
        line-height: 1.25;
    }

    .description {
        font-size: 0.9rem;
        line-height: 1.6;
    }

    .countdown-section {
        margin-bottom: 28px;
    }

    .countdown-container {
        gap: 4px;
    }

    .countdown-item {
        padding: 12px 10px;
        min-width: 60px;
        border-radius: var(--radius-sm);
    }

    .countdown-value {
        font-size: 1.6rem;
    }

    .countdown-separator {
        font-size: 1.4rem;
        padding-bottom: 12px;
    }

    .countdown-label {
        font-size: 0.55rem;
        letter-spacing: 0.08em;
    }

    .signup-section {
        max-width: 100%;
        margin-bottom: 40px;
    }

    #email-input {
        padding: 13px 12px 13px 40px;
        font-size: 0.9rem;
    }

    .input-icon {
        left: 14px;
        width: 16px;
        height: 16px;
    }

    .notify-btn {
        padding: 13px 20px;
        font-size: 0.9rem;
    }

    .signup-note {
        font-size: 0.75rem;
    }

    .features-section {
        gap: 12px;
        margin-bottom: 40px;
    }

    .feature-card {
        padding: 24px 20px;
    }

    .feature-icon {
        width: 46px;
        height: 46px;
        margin-bottom: 16px;
    }

    .feature-icon svg {
        width: 22px;
        height: 22px;
    }

    .feature-card h3 {
        font-size: 0.95rem;
        margin-bottom: 8px;
    }

    .feature-card p {
        font-size: 0.82rem;
    }

    .social-section {
        gap: 12px;
        margin-bottom: 32px;
    }

    .social-link {
        width: 40px;
        height: 40px;
    }

    .social-link svg {
        width: 16px;
        height: 16px;
    }

    .footer p {
        font-size: 0.72rem;
    }

    /* Reduce floating shapes on mobile for performance */
    .shape-4,
    .shape-5 {
        display: none;
    }

    .shape-1 { width: 300px; height: 300px; }
    .shape-2 { width: 250px; height: 250px; }
    .shape-3 { width: 200px; height: 200px; }
}

/* Small phones (max 360px) */
@media (max-width: 360px) {
    .navbar {
        padding: 8px 12px;
    }

    .nav-brand {
        gap: 6px;
    }

    .nav-logo-svg {
        width: 26px;
        height: 26px;
    }

    .nav-brand-law,
    .nav-brand-labs {
        font-size: 0.9rem;
    }

    .nav-brand-with {
        font-size: 0.55rem;
    }

    .toggle-track {
        width: 40px;
        height: 22px;
    }

    .toggle-thumb {
        width: 14px;
        height: 14px;
        top: 3px;
        left: 3px;
    }

    [data-theme="light"] .toggle-thumb {
        transform: translateX(18px);
    }

    .icon-sun, .icon-moon {
        width: 9px;
        height: 9px;
    }

    .main-container {
        padding: 62px 12px 24px;
    }

    .logo-icon {
        width: 60px;
        height: 60px;
        margin-bottom: 14px;
    }

    .brand-name {
        font-size: 1.5rem;
    }

    .brand-with {
        font-size: 0.75rem;
    }

    .badge {
        padding: 5px 14px;
        font-size: 0.6rem;
        margin-bottom: 16px;
    }

    .tagline {
        font-size: 1.35rem;
    }

    .description {
        font-size: 0.82rem;
    }

    .countdown-item {
        padding: 10px 8px;
        min-width: 52px;
    }

    .countdown-value {
        font-size: 1.35rem;
    }

    .countdown-separator {
        font-size: 1.2rem;
        padding-bottom: 10px;
    }

    .countdown-label {
        font-size: 0.5rem;
    }

    #email-input {
        padding: 12px 10px 12px 36px;
        font-size: 0.85rem;
    }

    .input-icon {
        left: 12px;
        width: 14px;
        height: 14px;
    }

    .notify-btn {
        padding: 12px 18px;
        font-size: 0.85rem;
    }

    .feature-card {
        padding: 20px 16px;
    }

    .feature-icon {
        width: 42px;
        height: 42px;
        margin-bottom: 14px;
    }

    .feature-icon svg {
        width: 20px;
        height: 20px;
    }

    .feature-card h3 {
        font-size: 0.9rem;
    }

    .feature-card p {
        font-size: 0.78rem;
        line-height: 1.55;
    }

    .social-link {
        width: 38px;
        height: 38px;
    }

    .social-link svg {
        width: 15px;
        height: 15px;
    }

    .success-message {
        padding: 12px 16px;
    }

    .success-message svg {
        width: 18px;
        height: 18px;
    }

    .success-message span {
        font-size: 0.8rem;
    }
}

/* Ultra-small screens (max 320px) */
@media (max-width: 320px) {
    .main-container {
        padding: 58px 10px 20px;
    }

    .nav-brand-with {
        display: none;
    }

    .nav-brand-law,
    .nav-brand-labs {
        font-size: 0.85rem;
    }

    .logo-icon {
        width: 52px;
        height: 52px;
    }

    .brand-name {
        font-size: 1.3rem;
    }

    .tagline {
        font-size: 1.15rem;
    }

    .description {
        font-size: 0.78rem;
    }

    .countdown-item {
        padding: 8px 6px;
        min-width: 46px;
    }

    .countdown-value {
        font-size: 1.15rem;
    }

    .countdown-separator {
        font-size: 1rem;
    }
}

/* ===== Landscape orientation on phones ===== */
@media (max-height: 500px) and (orientation: landscape) {
    .main-container {
        padding-top: 64px;
    }

    .logo-section {
        margin-bottom: 20px;
    }

    .logo-icon {
        width: 50px;
        height: 50px;
        margin-bottom: 10px;
    }

    .brand-name {
        font-size: 1.6rem;
    }

    .tagline-section {
        margin-bottom: 20px;
    }

    .badge {
        margin-bottom: 12px;
    }

    .tagline {
        font-size: 1.4rem;
    }

    .description {
        font-size: 0.85rem;
        margin-bottom: 12px;
    }

    .countdown-section {
        margin-bottom: 20px;
    }

    .countdown-item {
        padding: 10px 12px;
        min-width: 56px;
    }

    .countdown-value {
        font-size: 1.5rem;
    }

    .signup-section {
        margin-bottom: 28px;
    }

    .features-section {
        grid-template-columns: repeat(3, 1fr);
        gap: 10px;
        margin-bottom: 28px;
    }

    .feature-card {
        padding: 18px 14px;
    }

    .feature-icon {
        width: 36px;
        height: 36px;
        margin-bottom: 10px;
    }

    .feature-icon svg {
        width: 18px;
        height: 18px;
    }

    .feature-card h3 {
        font-size: 0.85rem;
    }

    .feature-card p {
        font-size: 0.75rem;
    }
}

/* ===== Touch device optimizations ===== */
@media (hover: none) and (pointer: coarse) {
    /* Larger tap targets for touch */
    .social-link {
        width: 48px;
        height: 48px;
    }

    .theme-toggle {
        padding: 8px;
    }

    .notify-btn {
        min-height: 48px;
    }

    #email-input {
        min-height: 48px;
    }

    /* Disable hover effects that don't work on touch */
    .feature-card:hover {
        transform: none;
    }

    .social-link:hover {
        transform: none;
    }

    .nav-brand:hover {
        transform: none;
    }

    .notify-btn:hover {
        transform: none;
    }

    .countdown-item:hover {
        transform: none;
    }

    /* Active states for touch feedback instead */
    .social-link:active {
        transform: scale(0.95);
        border-color: var(--border-accent);
        color: var(--accent-cyan);
    }

    .feature-card:active {
        transform: scale(0.98);
        border-color: var(--border-accent);
    }

    .notify-btn:active {
        transform: scale(0.97);
    }

    .nav-brand:active {
        transform: scale(0.97);
    }
}

/* ===== Reduced motion preference ===== */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .shape {
        animation: none !important;
    }

    .toggle-thumb {
        transition: transform 0.01ms !important;
    }

    .badge-dot {
        animation: none !important;
    }

    .countdown-separator {
        animation: none !important;
        opacity: 0.3;
    }

    #particles-canvas {
        display: none;
    }
}

/* ===== High contrast mode support ===== */
@media (prefers-contrast: high) {
    :root {
        --glass-border: rgba(100, 140, 200, 0.3);
        --border-subtle: rgba(100, 140, 200, 0.25);
    }

    .feature-card {
        border-width: 2px;
    }

    .countdown-item {
        border-width: 2px;
    }

    .navbar {
        border-bottom-width: 2px;
    }
}

/* ===== Selection styling ===== */
::selection {
    background: rgba(0, 212, 255, 0.3);
    color: var(--text-primary);
}

[data-theme="light"] ::selection {
    background: rgba(8, 145, 178, 0.25);
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}