:root {
    --bg-canvas: #FAFAF9;
    --bg-paper: #FFFFFF;
    --bg-sunken: #F5F5F3;
    --bg-subtle: #F0EFED;
    --text-primary: #1A1A1A;
    --text-secondary: #666666;
    --text-disabled: #AAAAAA;
    --border: #E8E8E6;
    --border-strong: #D4D4D4;
    --accent: #2F36FF;
    --accent-hover: #1E25E0;
    --danger: #DC2626;
    --success: #10B981;
    --warning: #F59E0B;
    --radius: 8px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.06);
    --shadow-lg: 0 8px 40px rgba(0,0,0,0.10);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
    background: var(--bg-canvas);
    color: var(--text-primary);
    font-family: 'DM Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    font-size: 14px;
    line-height: 1.5;
    display: flex;
    flex-direction: column;
}

h1, h2, h3, h4 { margin: 0; font-weight: 700; letter-spacing: -0.01em; }
h2 { font-size: 18px; }
h3 { font-size: 16px; }
h4 { font-size: 14px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.04em; }

.muted { color: var(--text-secondary); }
.danger { color: var(--danger); }
.small { font-size: 12px; }

.app-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 24px;
    background: var(--bg-paper);
    border-bottom: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 15px; }
.brand-mark {
    width: 24px;
    height: 24px;
    background: var(--accent);
    border-radius: 6px;
    display: inline-block;
}

.auth-state { display: flex; align-items: center; gap: 8px; }
.auth-indicator {
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 999px;
    font-weight: 600;
}
.auth-indicator--out { background: var(--bg-subtle); color: var(--text-secondary); }
.auth-indicator--in  { background: #E0F7EC; color: #047857; }

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 14px;
    border: 1px solid transparent;
    border-radius: var(--radius);
    background: var(--bg-paper);
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: background-color 100ms, border-color 100ms;
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--accent); color: #FFF; border-color: var(--accent); }
.btn-primary:hover:not(:disabled) { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-secondary { background: var(--bg-paper); border-color: var(--border-strong); }
.btn-secondary:hover:not(:disabled) { background: var(--bg-subtle); }
.btn-ghost { background: transparent; }
.btn-ghost:hover:not(:disabled) { background: var(--bg-subtle); }
.btn-danger { background: var(--bg-paper); color: var(--danger); border-color: var(--border-strong); }
.btn-danger:hover:not(:disabled) { background: #FEF2F2; border-color: var(--danger); }
.btn-sm { padding: 4px 10px; font-size: 12px; }

.layout {
    flex: 1;
    display: grid;
    grid-template-columns: 320px 1fr;
    min-height: 0;
}
.sidebar {
    background: var(--bg-paper);
    border-right: 1px solid var(--border);
    overflow-y: auto;
    padding: 16px;
}
.sidebar-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}
.template-list { list-style: none; padding: 0; margin: 0; }
.template-list li {
    padding: 10px 12px;
    border-radius: var(--radius);
    cursor: pointer;
    border: 1px solid transparent;
    margin-bottom: 4px;
    transition: background-color 100ms;
}
.template-list li:hover { background: var(--bg-subtle); }
.template-list li.active {
    background: var(--bg-subtle);
    border-color: var(--border-strong);
}
.template-list .tname { font-weight: 600; font-size: 13px; }
.template-list .tmeta { font-size: 11px; color: var(--text-secondary); margin-top: 2px; }

.detail {
    overflow-y: auto;
    padding: 24px 32px;
}
.detail-empty { margin-top: 80px; text-align: center; }

.section {
    background: var(--bg-paper);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px 24px;
    margin-bottom: 16px;
    box-shadow: var(--shadow-sm);
}
.section header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}
.section header h3 { margin: 0; }

.field-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}
.field-grid .full { grid-column: 1 / -1; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--text-secondary); font-weight: 600; }
input[type=text], input[type=password], input[type=number], textarea, select {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 8px 10px;
    font: inherit;
    color: var(--text-primary);
    background: var(--bg-paper);
}
input[type=text]:focus, input[type=password]:focus, input[type=number]:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(47, 54, 255, 0.12);
}
textarea { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 12px; }

.row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
}
.row:last-child { border-bottom: none; }
.row.muted-row { color: var(--text-secondary); }

.thumb-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
    gap: 12px;
}
.thumb {
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--bg-sunken);
    display: flex;
    flex-direction: column;
}
.thumb img {
    width: 100%;
    aspect-ratio: 16 / 9;
    object-fit: cover;
    display: block;
}
.thumb .thumb-foot {
    padding: 6px 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 11px;
}

.dialog {
    border: none;
    border-radius: 12px;
    padding: 24px 28px;
    max-width: 480px;
    width: 90vw;
    box-shadow: var(--shadow-lg);
    background: var(--bg-paper);
}
.dialog::backdrop { background: rgba(15, 15, 15, 0.4); }
.dialog form { display: flex; flex-direction: column; gap: 12px; }
.dialog h3 { margin-bottom: 4px; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 12px; }

.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--text-primary);
    color: var(--bg-paper);
    padding: 10px 16px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
    font-size: 13px;
    z-index: 1000;
    max-width: 360px;
}
.toast.error { background: var(--danger); }
.toast.success { background: var(--success); }

.danger-zone {
    border-color: #FECACA;
    background: #FFFAFA;
}

.chip {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
    background: var(--bg-subtle);
    color: var(--text-secondary);
}
.chip.retired { background: #FEF2F2; color: var(--danger); }
.chip.live { background: #E0F7EC; color: #047857; }

.signin-gate {
    position: fixed;
    inset: 0;
    background: var(--bg-canvas);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    z-index: 2000;
}
.signin-card {
    width: 100%;
    max-width: 380px;
    background: var(--bg-paper);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 28px;
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.signin-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 15px;
}
.signin-card label {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 12px;
    color: var(--text-secondary);
    font-weight: 600;
}
.signin-error {
    color: var(--danger);
    background: #FEF2F2;
    border: 1px solid #FECACA;
    border-radius: var(--radius);
    padding: 8px 10px;
    font-size: 13px;
}
.signin-submit { align-self: stretch; padding: 10px; }