:root,
[data-theme="dark"] {
    --background: #0b0e14;
    --surface: #131720;
    --surface-secondary: #1a1f2b;
    --text: #e8ebf2;
    --text-muted: #8b93a7;
    --primary: #5b8cff;
    --primary-contrast: #ffffff;
    --border: #262c3b;
    --danger: #ef5a6f;
    --success: #34d399;
    --warning: #f5b942;
    --shadow: 0 10px 30px rgba(0,0,0,0.35);
    --radius: 12px;
}

[data-theme="light"] {
    --background: #f4f6fb;
    --surface: #ffffff;
    --surface-secondary: #eef1f8;
    --text: #171a21;
    --text-muted: #5b6473;
    --primary: #3b66e0;
    --primary-contrast: #ffffff;
    --border: #dfe3ee;
    --danger: #d6304a;
    --success: #128a5e;
    --warning: #b06f00;
    --shadow: 0 10px 30px rgba(20,25,45,0.08);
    --radius: 12px;
}

[data-theme="red-tint-dark"] {
    --background: #150a0c;
    --surface: #1f1114;
    --surface-secondary: #29161a;
    --text: #f2e6e7;
    --text-muted: #a8878c;
    --primary: #ff5b6e;
    --primary-contrast: #1a0b0d;
    --border: #3a1e22;
    --danger: #ff7a86;
    --success: #34d399;
    --warning: #f5b942;
    --shadow: 0 10px 30px rgba(0,0,0,0.4);
    --radius: 12px;
}

[data-theme="red-tint-light"] {
    --background: #fbf1f1;
    --surface: #ffffff;
    --surface-secondary: #f7e9e9;
    --text: #241214;
    --text-muted: #7a5559;
    --primary: #c8283f;
    --primary-contrast: #ffffff;
    --border: #f0d6d8;
    --danger: #c8283f;
    --success: #128a5e;
    --warning: #b06f00;
    --shadow: 0 10px 30px rgba(90,10,20,0.08);
    --radius: 12px;
}

[data-theme="midnight-purple"] {
    --background: #0f0a1a;
    --surface: #181025;
    --surface-secondary: #221733;
    --text: #ece7f7;
    --text-muted: #a596c2;
    --primary: #a675ff;
    --primary-contrast: #140a24;
    --border: #33234a;
    --danger: #ff6b8a;
    --success: #3ee6a8;
    --warning: #f5c451;
    --shadow: 0 10px 30px rgba(0,0,0,0.4);
    --radius: 12px;
}

[data-theme="ocean"] {
    --background: #071a22;
    --surface: #0d2530;
    --surface-secondary: #123240;
    --text: #e3f4f8;
    --text-muted: #86b3c2;
    --primary: #22c3d6;
    --primary-contrast: #06141a;
    --border: #1a3f4d;
    --danger: #ff7a7a;
    --success: #35e0a1;
    --warning: #f5c451;
    --shadow: 0 10px 30px rgba(0,0,0,0.4);
    --radius: 12px;
}

[data-theme="forest"] {
    --background: #0c1810;
    --surface: #142218;
    --surface-secondary: #1b2e1f;
    --text: #e6f2e8;
    --text-muted: #8fae94;
    --primary: #4fd07a;
    --primary-contrast: #0a1a0f;
    --border: #24402a;
    --danger: #ff7d6e;
    --success: #4fd07a;
    --warning: #e8c25c;
    --shadow: 0 10px 30px rgba(0,0,0,0.4);
    --radius: 12px;
}

[data-theme="sunset"] {
    --background: #1a0f0f;
    --surface: #251616;
    --surface-secondary: #331d1a;
    --text: #f7e9e2;
    --text-muted: #c4948a;
    --primary: #ff8a5b;
    --primary-contrast: #1f0e08;
    --border: #46251f;
    --danger: #ff6b6b;
    --success: #3ee6a8;
    --warning: #ffb457;
    --shadow: 0 10px 30px rgba(0,0,0,0.4);
    --radius: 12px;
}