:root {
    --bg: #0f172a;
    --panel: #111827;
    --panel-soft: #1f2937;
    --line: #334155;
    --text: #e5e7eb;
    --muted: #94a3b8;
    --primary: #8b5cf6;
    --primary-dark: #7c3aed;
    --danger: #ef4444;
    --success: #22c55e;
    --warning: #f59e0b;
    --white: #ffffff;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; font-family: Arial, Helvetica, sans-serif; background: linear-gradient(160deg, #020617, #111827); color: var(--text); }
a { color: inherit; text-decoration: none; }
body { min-height: 100vh; }

.app-shell {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: 100vh;
}

.sidebar {
    background: rgba(15, 23, 42, 0.96);
    border-right: 1px solid var(--line);
    padding: 24px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 24px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 14px;
    margin-bottom: 24px;
}
.brand h1 { margin: 0; font-size: 1.2rem; }
.brand p { margin: 4px 0 0; color: var(--muted); font-size: 0.9rem; }
.brand-mark {
    width: 48px;
    height: 48px;
    display: grid;
    place-items: center;
    border-radius: 14px;
    background: linear-gradient(135deg, var(--primary), #06b6d4);
    font-weight: bold;
    font-size: 1.2rem;
}

.nav {
    display: grid;
    gap: 8px;
}
.nav a {
    padding: 12px 14px;
    border-radius: 12px;
    background: transparent;
    color: var(--text);
}
.nav a:hover {
    background: rgba(139, 92, 246, 0.12);
}

.user-box, .card, .stat-card {
    background: rgba(17, 24, 39, 0.92);
    border: 1px solid var(--line);
    border-radius: 18px;
}
.user-box {
    padding: 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}
.user-box p { margin: 4px 0 0; color: var(--muted); }

.main-content {
    padding: 28px;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    margin-bottom: 20px;
}
.page-header h2 { margin: 0 0 6px; font-size: 1.8rem; }
.muted { color: var(--muted); }

.card { padding: 22px; }
.auth-card {
    max-width: 420px;
    margin: 10vh auto;
}

.stack {
    display: grid;
    gap: 14px;
}

label span {
    display: block;
    margin-bottom: 8px;
    color: #cbd5e1;
    font-size: 0.95rem;
}

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

input, select, textarea {
    width: 100%;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid var(--line);
    background: #0b1220;
    color: var(--text);
}
textarea { resize: vertical; }

.button-row {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}
.button-row.compact { justify-content: flex-end; }

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 16px;
    border: none;
    border-radius: 12px;
    background: var(--primary);
    color: var(--white);
    cursor: pointer;
    font-weight: 600;
}
.button:hover { background: var(--primary-dark); }
.button-outline {
    background: transparent;
    border: 1px solid var(--line);
    color: var(--text);
}
.button-outline:hover { background: var(--panel-soft); }
.button-danger {
    background: rgba(239, 68, 68, 0.14);
    color: #fecaca;
    border: 1px solid rgba(239, 68, 68, 0.3);
}
.button-danger:hover { background: rgba(239, 68, 68, 0.2); }
.small { padding: 8px 12px; font-size: 0.88rem; }

.flash {
    padding: 14px 16px;
    border-radius: 14px;
    margin-bottom: 18px;
    border: 1px solid transparent;
}
.flash-success {
    background: rgba(34, 197, 94, 0.1);
    border-color: rgba(34, 197, 94, 0.35);
}
.flash-error {
    background: rgba(239, 68, 68, 0.12);
    border-color: rgba(239, 68, 68, 0.35);
}

.stats-grid, .detail-grid, .grid-two, .filter-grid {
    display: grid;
    gap: 16px;
}
.stats-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-bottom: 20px;
}
.stat-card { padding: 18px 20px; }
.stat-card span { display: block; color: var(--muted); margin-bottom: 8px; }
.stat-card strong { font-size: 1.8rem; }

.filter-card { margin-bottom: 20px; }
.filter-grid {
    grid-template-columns: 2fr 1fr 1fr 1fr auto;
    align-items: end;
}

.prompt-list {
    display: grid;
    gap: 16px;
}
.prompt-card h3 { margin: 0 0 8px; }
.prompt-card-top {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: start;
}
.meta-line { color: var(--muted); margin: 0; }
.tag-wrap {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 12px;
}
.tag {
    padding: 6px 10px;
    border-radius: 999px;
    background: rgba(139, 92, 246, 0.12);
    border: 1px solid rgba(139, 92, 246, 0.3);
    color: #ddd6fe;
    font-size: 0.84rem;
}

.detail-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-bottom: 20px;
}
.two-cards {
    grid-template-columns: 1fr 1fr;
}
.detail-card h3 { margin-top: 0; }
.prompt-preview {
    white-space: pre-wrap;
    word-break: break-word;
    background: #0b1220;
    padding: 16px;
    border-radius: 14px;
    border: 1px solid var(--line);
}
.form-card { max-width: 980px; }
.checkbox-line {
    display: flex;
    align-items: center;
    gap: 10px;
}
.checkbox-line input { width: auto; }
.note-box {
    margin-top: 18px;
    padding: 14px;
    background: rgba(6, 182, 212, 0.08);
    border: 1px solid rgba(6, 182, 212, 0.22);
    border-radius: 14px;
}
.note-box p { margin: 4px 0; }
.list-item {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: center;
    padding: 14px 0;
    border-bottom: 1px solid rgba(148, 163, 184, 0.16);
}
.list-item:last-child { border-bottom: none; }
.empty-state { text-align: center; padding: 40px 20px; }
.pagination {
    display: flex;
    gap: 10px;
    margin-top: 20px;
}
.pagination a {
    width: 38px;
    height: 38px;
    border-radius: 10px;
    display: grid;
    place-items: center;
    border: 1px solid var(--line);
    background: rgba(17, 24, 39, 0.92);
}
.pagination a.active {
    background: var(--primary);
    border-color: var(--primary);
}

@media (max-width: 1100px) {
    .stats-grid, .detail-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .filter-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 820px) {
    .app-shell { grid-template-columns: 1fr; }
    .sidebar { border-right: none; border-bottom: 1px solid var(--line); }
    .stats-grid, .detail-grid, .two-cards, .grid-two, .filter-grid { grid-template-columns: 1fr; }
    .prompt-card-top, .page-header { flex-direction: column; align-items: stretch; }
}