:root {
    --bg: #f5f0e8;
    --panel: rgba(255, 252, 247, 0.86);
    --panel-strong: rgba(252, 247, 239, 0.96);
    --ink: #1f3226;
    --muted: #627360;
    --accent: #c65d2d;
    --accent-soft: rgba(198, 93, 45, 0.14);
    --line: rgba(31, 50, 38, 0.12);
    --shadow: 0 18px 50px rgba(51, 43, 35, 0.12);
    --radius-xl: 28px;
    --radius-lg: 22px;
    --radius-md: 16px;
    --font-display: "Iowan Old Style", "Palatino Linotype", "Times New Roman", serif;
    --font-body: "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: var(--font-body);
    color: var(--ink);
    background:
        radial-gradient(circle at top left, rgba(198, 93, 45, 0.16), transparent 32%),
        radial-gradient(circle at 85% 10%, rgba(31, 50, 38, 0.14), transparent 22%),
        linear-gradient(180deg, #efe5d7 0%, #f8f4ed 50%, #f1ebe2 100%);
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.18) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.15) 1px, transparent 1px);
    background-size: 36px 36px;
    opacity: 0.32;
}

.shell {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 18px;
    min-height: 100vh;
    padding: 18px;
}

.sidebar,
.content,
.login-card {
    backdrop-filter: blur(18px);
    background: var(--panel);
    border: 1px solid rgba(255, 255, 255, 0.68);
    box-shadow: var(--shadow);
}

.sidebar {
    display: flex;
    flex-direction: column;
    padding: 24px 22px;
    border-radius: var(--radius-xl);
}

.brand-kicker {
    margin: 0;
    color: var(--accent);
    letter-spacing: 0.18em;
    font-size: 11px;
    text-transform: uppercase;
}

.brand-title {
    margin: 10px 0 8px;
    font-family: var(--font-display);
    font-size: 38px;
    line-height: 0.95;
}

.brand-subtitle {
    margin: 0 0 26px;
    color: var(--muted);
    line-height: 1.7;
    font-size: 14px;
}

.nav {
    display: grid;
    gap: 10px;
}

.nav button,
.ghost-btn,
.primary-btn,
.small-btn,
.danger-btn {
    border: none;
    cursor: pointer;
    transition: transform 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.nav button {
    text-align: left;
    padding: 14px 16px;
    border-radius: 16px;
    background: transparent;
    color: var(--ink);
    font-size: 15px;
}

.nav button.active {
    background: var(--ink);
    color: #f8f1e5;
    box-shadow: 0 14px 30px rgba(31, 50, 38, 0.22);
}

.nav button span {
    display: block;
    margin-top: 5px;
    font-size: 12px;
    opacity: 0.72;
}

.sidebar-footer {
    margin-top: auto;
    padding: 18px;
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(198, 93, 45, 0.12), rgba(31, 50, 38, 0.12));
}

.sidebar-footer h3 {
    margin: 0 0 8px;
    font-size: 18px;
}

.sidebar-footer p {
    margin: 0;
    color: var(--muted);
    line-height: 1.6;
    font-size: 13px;
}

.content {
    border-radius: var(--radius-xl);
    padding: 24px;
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 22px;
}

.eyebrow {
    margin: 0 0 10px;
    font-size: 12px;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: var(--accent);
}

.page-title {
    margin: 0;
    font-family: var(--font-display);
    font-size: 42px;
    line-height: 1;
}

.page-subtitle {
    margin: 10px 0 0;
    max-width: 720px;
    color: var(--muted);
    line-height: 1.7;
}

.user-chip {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 18px;
    border-radius: 18px;
    background: var(--panel-strong);
    border: 1px solid var(--line);
}

.user-chip strong {
    display: block;
    font-size: 15px;
}

.user-chip span {
    color: var(--muted);
    font-size: 12px;
}

.stat-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    margin-bottom: 20px;
}

.stat-card,
.panel-card,
.table-card {
    background: var(--panel-strong);
    border: 1px solid var(--line);
    border-radius: var(--radius-lg);
    padding: 18px;
}

.stat-card p {
    margin: 0;
    color: var(--muted);
    font-size: 13px;
}

.stat-card strong {
    display: block;
    margin-top: 10px;
    font-family: var(--font-display);
    font-size: 34px;
}

.panel-grid {
    display: grid;
    grid-template-columns: 1.25fr 0.95fr;
    gap: 14px;
}

.table-card table {
    width: 100%;
    border-collapse: collapse;
}

.table-card th,
.table-card td {
    padding: 12px 10px;
    border-bottom: 1px solid rgba(31, 50, 38, 0.08);
    text-align: left;
    font-size: 13px;
    vertical-align: top;
}

.table-card th {
    color: var(--muted);
    font-weight: 600;
}

.table-card tr:last-child td {
    border-bottom: none;
}

.tag,
.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px;
    border-radius: 999px;
    font-size: 12px;
}

.tag {
    background: rgba(31, 50, 38, 0.08);
    color: var(--ink);
}

.status-pill {
    background: var(--accent-soft);
    color: var(--accent);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
}

.section-header h2,
.panel-card h2 {
    margin: 0;
    font-size: 20px;
}

.section-header p,
.panel-card p {
    margin: 6px 0 0;
    color: var(--muted);
    font-size: 13px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.field {
    display: grid;
    gap: 8px;
}

.field.full {
    grid-column: 1 / -1;
}

.field label {
    font-size: 12px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    color: var(--muted);
}

.field input,
.field textarea,
.field select {
    width: 100%;
    padding: 13px 14px;
    border: 1px solid rgba(31, 50, 38, 0.1);
    border-radius: 14px;
    background: rgba(255, 255, 255, 0.82);
    color: var(--ink);
    font-family: inherit;
    font-size: 14px;
}

.field textarea {
    min-height: 110px;
    resize: vertical;
}

.primary-btn,
.ghost-btn,
.danger-btn,
.small-btn {
    border-radius: 999px;
    padding: 12px 18px;
    font-family: inherit;
    font-size: 14px;
}

.primary-btn {
    color: #fff8ef;
    background: linear-gradient(135deg, #c65d2d, #884123);
    box-shadow: 0 14px 28px rgba(198, 93, 45, 0.24);
}

.ghost-btn {
    background: rgba(31, 50, 38, 0.06);
    color: var(--ink);
}

.danger-btn {
    background: rgba(164, 33, 33, 0.12);
    color: #9a2f2f;
}

.small-btn {
    padding: 8px 12px;
    background: rgba(31, 50, 38, 0.08);
    color: var(--ink);
}

.primary-btn:hover,
.ghost-btn:hover,
.danger-btn:hover,
.small-btn:hover,
.nav button:hover {
    transform: translateY(-1px);
}

.login-shell {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
}

.login-card {
    width: min(900px, 100%);
    display: grid;
    grid-template-columns: 1fr 1fr;
    border-radius: 34px;
    overflow: hidden;
}

.login-aside {
    padding: 34px;
    color: #fbf5ec;
    background:
        radial-gradient(circle at 15% 15%, rgba(251, 245, 236, 0.18), transparent 22%),
        radial-gradient(circle at 85% 20%, rgba(255, 194, 147, 0.22), transparent 18%),
        linear-gradient(160deg, #173326 0%, #264235 45%, #c65d2d 100%);
}

.login-aside h1 {
    margin: 14px 0 12px;
    font-family: var(--font-display);
    font-size: 54px;
    line-height: 0.92;
}

.login-aside p {
    margin: 0;
    line-height: 1.7;
    opacity: 0.82;
}

.login-form {
    padding: 34px;
    background: rgba(255, 251, 247, 0.96);
}

.login-form h2 {
    margin: 10px 0;
    font-size: 28px;
}

.hint-box {
    margin-top: 16px;
    padding: 14px 16px;
    border-radius: 16px;
    background: rgba(31, 50, 38, 0.06);
    color: var(--muted);
    font-size: 13px;
    line-height: 1.6;
}

.notice-list,
.feed-list {
    display: grid;
    gap: 12px;
}

.notice-item,
.feed-item {
    padding: 14px 16px;
    border: 1px solid rgba(31, 50, 38, 0.08);
    border-radius: 16px;
    background: rgba(255, 255, 255, 0.65);
}

.notice-item strong,
.feed-item strong {
    display: block;
    margin-bottom: 8px;
}

.empty-state {
    padding: 18px;
    border-radius: 18px;
    color: var(--muted);
    background: rgba(31, 50, 38, 0.04);
}

.toast {
    position: fixed;
    right: 22px;
    bottom: 22px;
    z-index: 9;
    padding: 14px 18px;
    border-radius: 16px;
    color: #fbf5ec;
    background: rgba(31, 50, 38, 0.92);
    box-shadow: var(--shadow);
}

@media (max-width: 1100px) {
    .shell {
        grid-template-columns: 1fr;
    }

    .stat-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .panel-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 760px) {
    .login-card,
    .form-grid,
    .stat-grid {
        grid-template-columns: 1fr;
    }

    .topbar {
        flex-direction: column;
    }

    .page-title {
        font-size: 34px;
    }

    .content,
    .sidebar {
        padding: 18px;
    }
}