:root {
    --bg: #050b14;
    --panel: rgba(9, 19, 37, 0.9);
    --panel-2: rgba(12, 28, 54, 0.78);
    --line: rgba(104, 223, 255, 0.15);
    --line-strong: rgba(104, 223, 255, 0.32);
    --ink: #e7f5ff;
    --muted: #8ca8c2;
    --primary: #69dfff;
    --accent: #19f0c1;
    --danger: #ff7f96;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Microsoft YaHei", sans-serif;
    color: var(--ink);
    background:
        radial-gradient(circle at top left, rgba(105, 223, 255, 0.12), transparent 22%),
        radial-gradient(circle at top right, rgba(110, 123, 255, 0.12), transparent 26%),
        linear-gradient(180deg, #050b14 0%, #03070d 100%);
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(105, 223, 255, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(105, 223, 255, 0.04) 1px, transparent 1px);
    background-size: 36px 36px;
    opacity: 0.6;
}

a {
    color: inherit;
    text-decoration: none;
}

.auth-page {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 14px;
}

.auth-card,
.panel.dark,
.stat-card {
    background: linear-gradient(180deg, rgba(9, 19, 37, 0.94), rgba(4, 10, 20, 0.94));
    border: 1px solid var(--line);
    border-radius: 20px;
    box-shadow: 0 18px 48px rgba(0, 0, 0, 0.34);
}

.auth-card {
    width: min(100%, 480px);
    padding: 22px 18px;
}

.dark input,
select {
    background: rgba(4, 10, 20, 0.9);
    color: var(--ink);
    border: 1px solid rgba(104, 223, 255, 0.18);
}

label {
    display: block;
    margin: 12px 0 8px;
    color: #c6def3;
}

input,
select {
    width: 100%;
    padding: 12px 14px;
    border-radius: 14px;
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    margin-top: 18px;
    padding: 12px 18px;
    border: 1px solid var(--line-strong);
    border-radius: 14px;
    background: linear-gradient(90deg, rgba(105, 223, 255, 0.22), rgba(25, 240, 193, 0.16));
    color: var(--ink);
    font-weight: 700;
    cursor: pointer;
}

.auth-links {
    margin-top: 18px;
    color: var(--muted);
}

.admin-shell {
    width: min(100% - 16px, 1200px);
    margin: 0 auto;
    padding: 14px 0 28px;
}

.admin-topbar,
.nav-links,
.inline-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.admin-topbar {
    margin-bottom: 18px;
}

.brand {
    color: var(--primary);
    margin-bottom: 6px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.nav-links a,
.nav-links span {
    padding: 11px 14px;
    border-radius: 14px;
}

.nav-links a {
    color: var(--muted);
    border: 1px solid rgba(104, 223, 255, 0.12);
    background: rgba(255, 255, 255, 0.02);
}

.stats,
.shortcut-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}

.stats {
    margin-bottom: 14px;
}

.stat-card,
.panel.dark {
    padding: 18px 16px;
}

.stat-card span {
    display: block;
    color: var(--muted);
    margin-bottom: 8px;
}

.stat-card strong {
    font-size: 30px;
    color: var(--primary);
}

.table {
    width: 100%;
    border-collapse: collapse;
    display: block;
    overflow-x: auto;
}

.table th,
.table td {
    padding: 12px 10px;
    text-align: left;
    border-bottom: 1px solid rgba(104, 223, 255, 0.08);
    white-space: nowrap;
    vertical-align: top;
}

.shortcut-card {
    display: block;
    padding: 18px;
    border: 1px solid var(--line);
    border-radius: 18px;
    background: var(--panel-2);
}

.shortcut-card strong,
.shortcut-card span {
    display: block;
}

.shortcut-card span {
    margin-top: 8px;
    color: var(--muted);
    line-height: 1.7;
}

.button.small {
    width: 100%;
    margin-top: 0;
    padding: 10px 14px;
}

.flash,
.flash-panel {
    padding: 12px 14px;
    border-radius: 14px;
    margin-bottom: 16px;
    border: 1px solid var(--line);
}

.flash.success,
.flash-panel.success {
    background: rgba(25, 240, 193, 0.1);
    color: #a8f8e6;
}

.flash.error,
.flash-panel.error {
    background: rgba(255, 127, 150, 0.12);
    color: #ffc4cf;
    border-color: rgba(255, 127, 150, 0.2);
}

@media (min-width: 768px) {
    .auth-page {
        padding: 24px;
    }

    .auth-card {
        padding: 34px;
    }

    .admin-shell {
        width: min(100% - 28px, 1200px);
        padding: 28px 0 40px;
    }

    .admin-topbar {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
    }

    .nav-links {
        flex-direction: row;
        flex-wrap: wrap;
        align-items: center;
    }

    .stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 16px;
        margin-bottom: 20px;
    }

    .shortcut-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 16px;
    }

    .panel.dark,
    .stat-card {
        padding: 24px;
    }

    .inline-form {
        flex-direction: row;
        align-items: center;
    }

    .button.small {
        width: auto;
    }
}

@media (min-width: 1080px) {
    .stats {
        grid-template-columns: repeat(4, minmax(0, 1fr));
    }
}