:root {
    /* Dark Mode (Default) */
    --bg-color: #0a0a0a;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --accent-color: #6366f1;
    --accent-glow: rgba(99, 102, 241, 0.15);
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-border: rgba(255, 255, 255, 0.05);
    --nav-hover-bg: rgba(255, 255, 255, 0.05);
    --nav-hover-border: rgba(255, 255, 255, 0.1);
    --nav-shadow: rgba(0, 0, 0, 0.5);
    --h1-gradient-start: #fff;
    --h1-gradient-end: #a1a1aa;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

@media (prefers-color-scheme: light) {
    :root {
        --bg-color: #fafafa;
        --text-primary: #171717;
        --text-secondary: #525252;
        --accent-color: #4f46e5;
        --accent-glow: rgba(79, 70, 229, 0.08);
        --card-bg: rgba(255, 255, 255, 0.6);
        --card-border: rgba(0, 0, 0, 0.08);
        --nav-hover-bg: rgba(255, 255, 255, 0.9);
        --nav-hover-border: rgba(0, 0, 0, 0.1);
        --nav-shadow: rgba(0, 0, 0, 0.1);
        --h1-gradient-start: #171717;
        --h1-gradient-end: #525252;
    }
}

/* Manual Light Override */
[data-theme="light"] {
    --bg-color: #fafafa;
    --text-primary: #171717;
    --text-secondary: #525252;
    --accent-color: #4f46e5;
    --accent-glow: rgba(79, 70, 229, 0.08);
    --card-bg: rgba(255, 255, 255, 0.6);
    --card-border: rgba(0, 0, 0, 0.08);
    --nav-hover-bg: rgba(255, 255, 255, 0.9);
    --nav-hover-border: rgba(0, 0, 0, 0.1);
    --nav-shadow: rgba(0, 0, 0, 0.1);
    --h1-gradient-start: #171717;
    --h1-gradient-end: #525252;
}

/* Manual Dark Override */
[data-theme="dark"] {
    --bg-color: #0a0a0a;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --accent-color: #6366f1;
    --accent-glow: rgba(99, 102, 241, 0.15);
    --card-bg: rgba(255, 255, 255, 0.03);
    --card-border: rgba(255, 255, 255, 0.05);
    --nav-hover-bg: rgba(255, 255, 255, 0.05);
    --nav-hover-border: rgba(255, 255, 255, 0.1);
    --nav-shadow: rgba(0, 0, 0, 0.5);
    --h1-gradient-start: #fff;
    --h1-gradient-end: #a1a1aa;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-family);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    position: relative;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Background Ambient Glow */
body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at center, var(--accent-glow) 0%, transparent 50%);
    z-index: -1;
    pointer-events: none;
    animation: pulse 15s ease-in-out infinite alternate;
}

@keyframes pulse {
    0% { opacity: 0.5; transform: scale(1); }
    100% { opacity: 0.8; transform: scale(1.1); }
}

.container {
    max-width: 720px;
    margin: 0 auto;
    padding: 80px 24px;
    width: 100%;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

/* Typography */
h1 {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -0.04em;
    margin-bottom: 16px;
    background: linear-gradient(to bottom right, var(--h1-gradient-start), var(--h1-gradient-end));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: 48px;
    margin-bottom: 24px;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

p {
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 24px;
    font-weight: 400;
}

/* Links */
a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.2s ease;
    border-bottom: 1px solid transparent;
}

a:hover {
    color: var(--accent-color);
}

/* Navigation / Links List */
.nav-links {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 48px;
}

.nav-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 24px;
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.nav-item:hover {
    transform: translateY(-2px);
    background: var(--nav-hover-bg);
    border-color: var(--nav-hover-border);
    box-shadow: 0 10px 30px -10px var(--nav-shadow);
}

.nav-item span {
    font-weight: 500;
}

.nav-item .arrow {
    opacity: 0.5;
    transition: transform 0.2s ease;
}

.nav-item:hover .arrow {
    opacity: 1;
    transform: translateX(4px);
    color: var(--accent-color);
}

/* Legal Content Styling */
.legal-content {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 24px;
    padding: 48px;
    backdrop-filter: blur(10px);
    margin-top: 32px;
}

.legal-content h1 {
    font-size: 2.5rem;
    margin-bottom: 8px;
}

.legal-content .date {
    font-size: 0.9rem;
    margin-bottom: 48px;
    display: block;
}

.legal-content ul {
    margin-left: 20px;
    margin-bottom: 24px;
    color: var(--text-secondary);
}

.legal-content li {
    margin-bottom: 8px;
}

/* Footer */
footer {
    margin-top: auto;
    padding-top: 64px;
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-secondary);
    opacity: 0.6;
}

/* Header/Nav for subpages */
.subpage-header {
    margin-bottom: 40px;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 24px;
    transition: color 0.2s;
}

.back-link:hover {
    color: var(--text-primary);
}

/* Theme Toggle Button */
.theme-toggle {
    position: fixed;
    top: 32px;
    right: 32px;
    width: 44px;
    height: 44px;
    padding: 0;
    background: transparent;
    border: none;
    color: var(--text-primary);
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0.5;
    -webkit-tap-highlight-color: transparent;
}

.theme-toggle:hover {
    background: var(--card-bg);
    opacity: 1;
    transform: rotate(12deg);
}

.theme-toggle svg {
    width: 22px;
    height: 22px;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
}

/* Responsive */
@media (max-width: 640px) {
    .container {
        padding: 48px 20px;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    .legal-content {
        padding: 24px;
        border-radius: 16px;
    }
    
    .theme-toggle {
        top: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
    }
}