:root {
    --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --brand: #e62852;
    --brand-hot: #f91555;
    --brand-soft: #f45b7d;
    --brand-soft-hover: #f86888;
    --on-brand: #ffffff;
    --code-text: #f4f0e6;
    --primary-gradient: linear-gradient(51deg, #e62852 50%, #f91555 70%, #f45b7d 100%);
    --primary-gradient-hover: linear-gradient(51deg, #e62852 50%, #f91555 70%, #f86888 100%);
    --secondary-gradient: linear-gradient(51deg, #e62852 0%, #f91555 20%, #f45b7d 50%);
    --radius-sm: 6px;
    --radius: 8px;
    --radius-lg: 12px;
    --focus-ring: 0 0 0 3px color-mix(in srgb, var(--brand) 24%, transparent);
    --shadow-sm: 0 1px 0 rgba(255, 255, 255, 0.82) inset;
    --shadow: 0 18px 50px rgba(28, 35, 31, 0.12);
    --shadow-lg: 0 28px 80px rgba(4, 18, 13, 0.34);
    --ok: #25895f;
    --warning: #d69826;
    --danger: #b3382f;
    --info: #316fba;
}

:root,
:root[data-theme="light"] {
    color-scheme: light;
    --bg: #f7f6f2;
    --bg-soft: #f0ede6;
    --surface: #fffdf9;
    --surface-strong: #ffffff;
    --surface-muted: #f4f1ea;
    --ink: #17211d;
    --text: var(--ink);
    --muted: #66736f;
    --line: #ded8cd;
    --primary: var(--brand);
    --primary-2: var(--brand-hot);
    --accent: var(--brand);
    --amber: var(--warning);
    --teal: #229b86;
    --blue: var(--info);
    --sidebar-bg: #fffdf9;
    --sidebar-text: #17211d;
    --sidebar-muted: #66736f;
    --sidebar-line: #ded8cd;
    --sidebar-hover: rgba(230, 40, 82, 0.075);
    --header-bg: rgba(247, 246, 242, 0.84);
    --card-bg: rgba(255, 253, 249, 0.92);
    --card-bg-strong: #ffffff;
    --table-hover: rgba(230, 40, 82, 0.045);
    --form-bg: #ffffff;
    --notice-bg: rgba(49, 111, 186, 0.1);
    --notice-text: #194d88;
    --notice-line: rgba(49, 111, 186, 0.16);
    --subtle-grid: rgba(44, 63, 82, 0.08);
    --auth-bg-a: rgba(36, 55, 69, 0.96);
    --auth-bg-b: rgba(24, 34, 45, 0.9);
    --auth-bg-c: rgba(230, 40, 82, 0.3);
}

:root[data-theme="dark"] {
    color-scheme: dark;
    --bg: #111821;
    --bg-soft: #18212b;
    --surface: #18212b;
    --surface-strong: #202b36;
    --surface-muted: #243140;
    --ink: #f4f0e8;
    --text: var(--ink);
    --muted: #a5b0aa;
    --line: #334252;
    --primary: var(--brand);
    --primary-2: var(--brand-hot);
    --accent: var(--brand-soft);
    --amber: #e4ad43;
    --teal: #39b69d;
    --blue: #7fb1f0;
    --sidebar-bg: #0d131b;
    --sidebar-text: #fff9f1;
    --sidebar-muted: rgba(255, 249, 241, 0.66);
    --sidebar-line: rgba(255, 255, 255, 0.11);
    --sidebar-hover: rgba(230, 40, 82, 0.16);
    --header-bg: rgba(17, 24, 33, 0.88);
    --card-bg: rgba(24, 33, 43, 0.94);
    --card-bg-strong: #202b36;
    --table-hover: rgba(230, 40, 82, 0.1);
    --form-bg: #111821;
    --notice-bg: rgba(127, 177, 240, 0.12);
    --notice-text: #b7d4fb;
    --notice-line: rgba(127, 177, 240, 0.2);
    --subtle-grid: rgba(244, 240, 232, 0.075);
    --shadow-sm: 0 1px 0 rgba(255, 255, 255, 0.06) inset;
    --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 28px 80px rgba(0, 0, 0, 0.55);
    --auth-bg-a: rgba(22, 34, 46, 0.96);
    --auth-bg-b: rgba(13, 19, 27, 0.92);
    --auth-bg-c: rgba(230, 40, 82, 0.34);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]):not([data-theme="dark"]) {
        color-scheme: dark;
        --bg: #111821;
        --bg-soft: #18212b;
        --surface: #18212b;
        --surface-strong: #202b36;
        --surface-muted: #243140;
        --ink: #f4f0e8;
        --text: var(--ink);
        --muted: #a5b0aa;
        --line: #334252;
        --primary: var(--brand);
        --primary-2: var(--brand-hot);
        --accent: var(--brand-soft);
        --amber: #e4ad43;
        --teal: #39b69d;
        --blue: #7fb1f0;
        --sidebar-bg: #0d131b;
        --sidebar-text: #fff9f1;
        --sidebar-muted: rgba(255, 249, 241, 0.66);
        --sidebar-line: rgba(255, 255, 255, 0.11);
        --sidebar-hover: rgba(230, 40, 82, 0.16);
        --header-bg: rgba(17, 24, 33, 0.88);
        --card-bg: rgba(24, 33, 43, 0.94);
        --card-bg-strong: #202b36;
        --table-hover: rgba(230, 40, 82, 0.1);
        --form-bg: #111821;
        --notice-bg: rgba(127, 177, 240, 0.12);
        --notice-text: #b7d4fb;
        --notice-line: rgba(127, 177, 240, 0.2);
        --subtle-grid: rgba(244, 240, 232, 0.075);
        --shadow-sm: 0 1px 0 rgba(255, 255, 255, 0.06) inset;
        --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
        --shadow-lg: 0 28px 80px rgba(0, 0, 0, 0.55);
        --auth-bg-a: rgba(22, 34, 46, 0.96);
        --auth-bg-b: rgba(13, 19, 27, 0.92);
        --auth-bg-c: rgba(230, 40, 82, 0.34);
    }
}

* {
    box-sizing: border-box;
}

html {
    min-height: 100%;
    background: var(--bg);
    color: var(--text);
    scroll-behavior: smooth;
}

body {
    min-height: 100vh;
    margin: 0;
    background:
        linear-gradient(180deg, rgba(255, 253, 249, 0.72), rgba(255, 253, 249, 0) 280px),
        var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 15px;
    line-height: 1.45;
}

:root[data-theme="dark"] body {
    background:
        linear-gradient(180deg, rgba(230, 40, 82, 0.08), rgba(17, 24, 33, 0) 280px),
        var(--bg);
}

button,
input,
select,
textarea {
    font: inherit;
}

button,
.button,
.theme-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    border: 1px solid transparent;
    border-radius: var(--radius);
    padding: 0 14px;
    background: var(--primary-gradient);
    color: var(--on-brand);
    box-shadow: var(--shadow-sm);
    font-weight: 800;
    text-decoration: none;
    cursor: pointer;
    transition: transform 0.16s ease, box-shadow 0.16s ease, border-color 0.16s ease, background 0.16s ease;
}

button:hover,
.button:hover,
.theme-button:hover {
    background: var(--primary-gradient-hover);
    box-shadow: 0 10px 24px rgba(230, 40, 82, 0.18);
    transform: translateY(-1px);
}

button:focus-visible,
.button:focus-visible,
.theme-button:focus-visible,
input:focus,
select:focus,
textarea:focus {
    outline: none;
    box-shadow: var(--focus-ring);
}

input,
select,
textarea {
    min-height: 42px;
    border: 1px solid var(--line);
    border-radius: var(--radius-sm);
    background: var(--form-bg);
    color: var(--text);
}

a {
    color: inherit;
}

code,
pre {
    border-radius: var(--radius-sm);
    background: var(--surface-muted);
}