/* SkinHealthMonitor Design System */
:root {
    --primary: #1976D2;
    --primary-light: #42A5F5;
    --secondary: #43A047;
    --bg: #121418;
    --surface: #1E2228;
    --surface-light: #2C3038;
    --text: #E3E5EA;
    --text-muted: #B0B4BC;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

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

.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 20px;
}

/* --- Navigation --- */
.nav {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--surface);
    border-bottom: 1px solid var(--surface-light);
    padding: 16px 20px;
}
.nav .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.nav-brand {
    font-weight: 700;
    font-size: 1.2em;
    color: var(--primary-light);
    text-decoration: none;
}
.nav-brand:hover { text-decoration: none; }
.nav-links { display: flex; gap: 24px; }
.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--text); }

/* --- Privacy Page --- */
.privacy-page {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 20px;
}
.privacy-page .content-card {
    background: var(--surface);
    padding: 40px;
    border-radius: 16px;
}
.privacy-page h1 { color: var(--primary-light); margin-bottom: 8px; }
.privacy-page h2 { color: var(--primary-light); margin-top: 32px; margin-bottom: 16px; font-size: 1.4em; }
.privacy-page h3 { margin-top: 24px; margin-bottom: 12px; font-size: 1.1em; }
.privacy-page p { margin-bottom: 16px; color: var(--text-muted); }
.privacy-page ul { margin-left: 24px; margin-bottom: 16px; color: var(--text-muted); }
.privacy-page li { margin-bottom: 8px; }
.privacy-page .date { color: var(--text-muted); font-size: 0.9em; margin-bottom: 24px; }
.privacy-page .summary { background: var(--primary); padding: 20px; border-radius: 12px; margin-top: 32px; }
.privacy-page .summary p { color: white; margin-bottom: 8px; }
.privacy-page .summary p:last-child { margin-bottom: 0; }
.privacy-page .summary h2 { color: white; margin-top: 0; }
.privacy-page hr { border: none; border-top: 1px solid var(--surface-light); margin: 32px 0; }

/* --- Footer --- */
footer {
    padding: 40px 20px;
    text-align: center;
    border-top: 1px solid var(--surface-light);
}
footer p { color: var(--text-muted); font-size: 0.9em; }
footer a { color: var(--primary-light); text-decoration: none; }
footer a:hover { text-decoration: underline; }

/* --- Responsive --- */
@media (max-width: 600px) {
    .privacy-page .content-card { padding: 24px 16px; }
    .privacy-page h1 { font-size: 1.6em; }
}