:root {
    color-scheme: light;
    --bg: #f5f7fb;
    --text: #1e293b;
    --muted: #64748b;
    --line: #d9e2ef;
    --panel: #ffffff;
    --accent: #0f8f7f;
    --accent-strong: #087466;
    --danger: #b42318;
    --warning-bg: #fff8df;
    --error-bg: #fff1f0;
    --success-bg: #edfdf6;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", sans-serif;
}

a {
    color: inherit;
}

.page {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
    padding: 32px 0 48px;
}

.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 24px;
}

.eyebrow {
    margin: 0 0 6px;
    color: var(--accent);
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
}

h1,
h2,
h3 {
    margin: 0;
    line-height: 1.2;
}

h1 {
    font-size: 32px;
}

h2 {
    font-size: 20px;
}

h3 {
    font-size: 20px;
}

.admin-link,
.primary-button,
.secondary-button,
.danger-button,
.join-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
    padding: 0 16px;
    border: 1px solid transparent;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    cursor: pointer;
    white-space: nowrap;
}

.admin-link,
.secondary-button {
    border-color: var(--line);
    background: #fff;
}

.primary-button,
.join-button {
    background: var(--accent);
    color: #fff;
}

.primary-button:hover,
.join-button:hover {
    background: var(--accent-strong);
}

.primary-button:disabled {
    background: #94a3b8;
    cursor: not-allowed;
}

.danger-button {
    background: #fff;
    border-color: #f0b4ae;
    color: var(--danger);
}

.join-button.disabled {
    background: #e2e8f0;
    color: var(--muted);
    pointer-events: none;
}

.group-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 14px;
}

.group-section {
    margin-bottom: 28px;
}

.section-heading {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 12px;
}

.section-heading span {
    color: var(--muted);
    font-size: 13px;
}

.group-card,
.panel,
.admin-group-row,
.notice {
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel);
}

.group-card {
    display: grid;
    grid-template-columns: 84px minmax(0, 1fr) 120px;
    gap: 22px;
    align-items: center;
    min-height: 148px;
    padding: 22px 24px;
}

.avatar {
    width: 84px;
    height: 84px;
    border-radius: 8px;
    object-fit: cover;
    background: #e2e8f0;
}

.avatar.small {
    width: 52px;
    height: 52px;
}

.group-main {
    min-width: 0;
}

.group-title-row {
    min-width: 0;
}

.group-title-row h3 {
    overflow-wrap: anywhere;
}

.group-number,
.group-meta,
.member-row,
.muted {
    color: var(--muted);
}

.group-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 8px;
    font-size: 13px;
}

.group-meta span,
.member-row span {
    overflow-wrap: anywhere;
}

.group-number {
    flex: 0 0 auto;
    font-size: 13px;
}

.member-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin: 10px 0 8px;
    font-size: 13px;
}

.capacity {
    height: 8px;
    overflow: hidden;
    border-radius: 999px;
    background: #e2e8f0;
}

.capacity span {
    display: block;
    height: 100%;
}

.capacity-low span {
    background: #16a34a;
}

.capacity-mid span {
    background: #f0b429;
}

.capacity-high span {
    background: #dc2626;
}

.capacity-unknown span {
    background: #94a3b8;
}

.notice {
    margin-bottom: 16px;
    padding: 14px 16px;
    background: var(--warning-bg);
}

.notice.error {
    background: var(--error-bg);
    color: var(--danger);
}

.notice.success {
    background: var(--success-bg);
    color: #067647;
}

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

.gate-panel {
    width: min(360px, 100%);
    border: 1px solid var(--line);
    border-radius: 8px;
    background: var(--panel);
    padding: 22px;
}

.gate-panel h1 {
    margin-bottom: 16px;
    font-size: 24px;
}

.gate-form {
    display: grid;
    gap: 16px;
}

.slider-verify {
    display: grid;
    gap: 8px;
}

.slider-verify span {
    color: var(--muted);
    font-size: 14px;
}

.slider-verify input[type="range"] {
    appearance: none;
    width: 100%;
    height: 34px;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 0;
    background: linear-gradient(90deg, #d1fae5 0 var(--slider-progress, 0%), #e2e8f0 var(--slider-progress, 0%) 100%);
    cursor: pointer;
}

.slider-verify input[type="range"]::-webkit-slider-thumb {
    appearance: none;
    width: 32px;
    height: 32px;
    border: 0;
    border-radius: 8px;
    background: var(--accent);
}

.slider-verify input[type="range"]::-moz-range-thumb {
    width: 32px;
    height: 32px;
    border: 0;
    border-radius: 8px;
    background: var(--accent);
}

.gate-submit {
    width: 100%;
}

.admin-page {
    width: min(1280px, calc(100% - 32px));
}

.header-actions,
.panel-title-row,
.side-actions,
.row-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.panel {
    margin-bottom: 18px;
    padding: 20px;
}

.compact-panel {
    max-width: 460px;
}

.panel-title-row {
    justify-content: space-between;
    margin-bottom: 16px;
}

.form-grid {
    display: grid;
    gap: 14px;
}

.settings-grid {
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    align-items: end;
}

.group-edit-grid {
    grid-template-columns: 110px minmax(160px, 1fr) minmax(150px, 1fr) minmax(210px, 1.4fr) minmax(180px, 1.2fr) 90px auto auto;
    align-items: end;
}

label {
    display: grid;
    gap: 6px;
    min-width: 0;
}

label span {
    color: var(--muted);
    font-size: 13px;
}

input,
select {
    width: 100%;
    min-height: 40px;
    border: 1px solid var(--line);
    border-radius: 8px;
    padding: 0 11px;
    color: var(--text);
    font: inherit;
    background: #fff;
}

.checkbox-line {
    display: flex;
    align-items: center;
    gap: 8px;
    min-height: 40px;
}

.checkbox-line input {
    width: 18px;
    min-height: 18px;
}

.admin-list {
    display: grid;
    gap: 14px;
}

.admin-group-row {
    display: grid;
    grid-template-columns: 52px 1fr;
    gap: 14px;
    padding: 14px;
}

.group-status {
    grid-column: 2;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    color: var(--muted);
    font-size: 13px;
}

.side-actions {
    grid-column: 2;
    align-items: stretch;
}

.inline-error {
    color: var(--danger);
}

@media (max-width: 900px) {
    .page {
        width: min(100% - 24px, 1120px);
    }

    .settings-grid,
    .group-edit-grid,
    .admin-group-row {
        grid-template-columns: 1fr;
    }

    .group-card {
        grid-template-columns: 64px minmax(0, 1fr);
        gap: 14px;
        min-height: 0;
        padding: 16px;
    }

    .avatar {
        width: 64px;
        height: 64px;
    }

    .join-button {
        grid-column: 1 / -1;
        width: 100%;
    }

    .group-status,
    .side-actions {
        grid-column: auto;
    }
}