:root {
    --bg-dark: #0a0a0a;
    --bg-card: #1a1a1a;
    --text-primary: #ffffff;
    --text-secondary: #a0a0a0;
    --border: #2a2a2a;

    --primary: #FF9500;
    --primary-gradient-to: #FF6B00;
    --primary-rgb: 255, 149, 0;
}

body.theme-timeup {
    --primary: #FF9500;
    --primary-gradient-to: #FF6B00;
    --primary-rgb: 255, 149, 0;
}

body.theme-cartocraft {
    --primary: #3B82F6;
    --primary-gradient-to: #6366F1;
    --primary-rgb: 59, 130, 246;
}

body.theme-e4clock {
    --primary: #C9A84C;
    --primary-gradient-to: #E0BE5A;
    --primary-rgb: 201, 168, 76;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.7;
    min-height: 100vh;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 24px;
}

header {
    text-align: center;
    margin-bottom: 48px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--border);
}

.logo {
    font-size: 32px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--primary-gradient-to));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

h1 {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 8px;
}

.last-updated {
    color: var(--text-secondary);
    font-size: 14px;
}

section {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 28px;
    margin-bottom: 24px;
    border: 1px solid var(--border);
}

h2 {
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--primary);
}

p {
    color: var(--text-secondary);
    margin-bottom: 16px;
}

p:last-child {
    margin-bottom: 0;
}

ul {
    color: var(--text-secondary);
    margin-left: 24px;
    margin-bottom: 16px;
}

li {
    margin-bottom: 8px;
}

strong {
    color: var(--text-primary);
    font-weight: 600;
}

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

.highlight-box {
    background: rgba(var(--primary-rgb), 0.1);
    border-left: 3px solid var(--primary);
    padding: 16px 20px;
    border-radius: 0 12px 12px 0;
    margin: 20px 0;
}

.highlight-box p {
    color: var(--text-primary);
    margin: 0;
}

.highlight-box a {
    color: var(--text-primary);
    text-decoration: underline;
}

footer {
    text-align: center;
    padding-top: 32px;
    border-top: 1px solid var(--border);
    margin-top: 48px;
}

footer p {
    font-size: 14px;
}

.back-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 24px;
    color: var(--text-secondary);
    font-size: 14px;
}

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

@media (max-width: 600px) {
    .container {
        padding: 24px 16px;
    }

    section {
        padding: 20px;
    }

    h1 {
        font-size: 24px;
    }

    h2 {
        font-size: 18px;
    }
}