:root {
    --accent: #E8451C;
    --accent-hover: #FF5A33;
    --bg: #F2F2F7;
    --card: #FFFFFF;
    --elevated: #F0F0F5;
    --border: rgba(0,0,0,0.06);
    --text-primary: #000000;
    --text-secondary: #3C3C43;
    --text-tertiary: #8E8E93;
    --overlay-bg: rgba(242,242,247,0.88);
    --shadow-color: rgba(0,0,0,0.06);
    --scrollbar-thumb: #C7C7CC;
}

[data-theme="dark"] {
    --accent: #E8451C;
    --accent-hover: #FF5A33;
    --bg: #000000;
    --card: #1C1C1E;
    --elevated: #2C2C2E;
    --border: rgba(255,255,255,0.08);
    --text-primary: #F5F5F7;
    --text-secondary: #8E8E93;
    --text-tertiary: #636366;
    --overlay-bg: rgba(0,0,0,0.92);
    --shadow-color: rgba(0,0,0,0.4);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'SF Pro Display', sans-serif;
    background: var(--bg);
    color: var(--text-primary);
    transition: background-color 0.4s ease, color 0.4s ease;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
}

nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 20px 0;
    background: var(--overlay-bg);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

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

.logo {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.logo span {
    color: var(--accent);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 15px;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--accent);
}

.theme-toggle {
    position: relative;
    width: 56px;
    height: 30px;
    border-radius: 15px;
    cursor: pointer;
    border: none;
    padding: 0;
    outline: none;
    transition: background-color 0.3s ease;
    background: #FFD60A;
}

[data-theme="dark"] .theme-toggle {
    background: #3A3A5C;
}

.theme-toggle-thumb {
    position: absolute;
    top: 3px;
    left: 3px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: white;
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.2);
}

[data-theme="dark"] .theme-toggle-thumb {
    transform: translateX(26px);
}

.page-content {
    padding: 120px 0 80px;
    min-height: 100vh;
}

.page-header {
    text-align: center;
    margin-bottom: 60px;
}

.page-header h1 {
    font-size: 48px;
    font-weight: 700;
    letter-spacing: -1px;
    margin-bottom: 16px;
}

.page-header p {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 32px;
    border-radius: 12px;
    font-size: 16px;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    min-height: 52px;
}

.btn-primary {
    background: var(--accent);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
}

footer {
    padding: 40px 0;
    border-top: 1px solid var(--border);
    margin-top: 80px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-copy {
    font-size: 14px;
    color: var(--text-tertiary);
}

.footer-links {
    display: flex;
    gap: 24px;
}

.footer-links a {
    font-size: 14px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

@media (max-width: 768px) {
    .page-header h1 {
        font-size: 32px;
    }
    
    .nav-links {
        display: none;
    }
}