/* ============================================================
   StoryGen AI — application stylesheet
   Design tokens + component styles. Extracted from inline
   layout CSS so the whole app shares one consistent look.
   ============================================================ */

:root {
    /* Brand */
    --color-primary: #1e3a8a;
    --color-primary-hover: #1e40af;
    --color-primary-dark: #172554;
    --color-accent: #0891b2;

    /* Neutrals */
    --color-bg: #f4f6fa;
    --color-surface: #ffffff;
    --color-surface-alt: #f9fafb;
    --color-border: #e5e7eb;
    --color-border-strong: #d1d5db;
    --color-text: #111827;
    --color-text-muted: #6b7280;
    --color-text-subtle: #9ca3af;

    /* Semantic */
    --color-success: #059669;
    --color-success-bg: #d1fae5;
    --color-success-text: #065f46;
    --color-danger: #dc2626;
    --color-danger-bg: #fee2e2;
    --color-danger-text: #991b1b;
    --color-warn: #d97706;
    --color-warn-bg: #fef3c7;
    --color-warn-text: #92400e;
    --color-info: #0284c7;
    --color-info-bg: #e0f2fe;
    --color-info-text: #075985;

    /* Spacing scale */
    --sp-1: 4px;
    --sp-2: 8px;
    --sp-3: 12px;
    --sp-4: 16px;
    --sp-5: 20px;
    --sp-6: 24px;
    --sp-8: 32px;
    --sp-10: 40px;
    --sp-12: 48px;

    /* Radii */
    --radius-sm: 4px;
    --radius: 6px;
    --radius-lg: 10px;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(16, 24, 40, 0.05);
    --shadow: 0 1px 3px rgba(16, 24, 40, 0.08), 0 1px 2px rgba(16, 24, 40, 0.04);
    --shadow-md: 0 4px 6px -1px rgba(16, 24, 40, 0.08), 0 2px 4px -2px rgba(16, 24, 40, 0.04);

    /* Layout */
    --sidebar-w: 240px;
    --topbar-h: 56px;
    --content-max: 1200px;
}

/* ============ Reset ============ */
*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; height: 100%; }
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
}
a { color: var(--color-primary); text-decoration: none; }
a:hover { text-decoration: underline; }
h1, h2, h3, h4 { margin-top: 0; letter-spacing: -0.01em; }
h1 { font-size: 22px; font-weight: 700; }
h2 { font-size: 18px; font-weight: 600; }
h3 { font-size: 15px; font-weight: 600; }
code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 12px; }
pre { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; }

/* ============ App shell ============ */
.app-shell {
    display: grid;
    grid-template-columns: var(--sidebar-w) 1fr;
    min-height: 100vh;
}
.sidebar {
    background: var(--color-primary-dark);
    color: #e0e7ff;
    padding: var(--sp-5) 0;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}
.sidebar .brand {
    padding: 0 var(--sp-5) var(--sp-5);
    font-weight: 700;
    font-size: 17px;
    color: #fff;
    letter-spacing: -0.01em;
    border-bottom: 1px solid rgba(255,255,255,0.1);
    margin-bottom: var(--sp-4);
    display: flex;
    align-items: center;
    gap: var(--sp-2);
}
.sidebar nav { display: flex; flex-direction: column; gap: 2px; padding: 0 var(--sp-3); }
.sidebar nav .group-label {
    padding: var(--sp-4) var(--sp-3) var(--sp-1);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: rgba(255,255,255,0.5);
    font-weight: 600;
}
.sidebar nav a {
    color: #c7d2fe;
    padding: var(--sp-2) var(--sp-3);
    border-radius: var(--radius);
    font-size: 14px;
    display: flex;
    align-items: center;
    gap: var(--sp-3);
    transition: background 0.1s ease, color 0.1s ease;
}
.sidebar nav a:hover { background: rgba(255,255,255,0.08); color: #fff; text-decoration: none; }
.sidebar nav a.active { background: var(--color-primary); color: #fff; }
.sidebar nav a .icon { width: 16px; height: 16px; flex-shrink: 0; }

.sidebar .user-block {
    margin-top: auto;
    padding: var(--sp-4) var(--sp-5);
    border-top: 1px solid rgba(255,255,255,0.1);
    font-size: 13px;
    color: #c7d2fe;
}
.sidebar .user-block .user-name { color: #fff; font-weight: 600; margin-bottom: var(--sp-1); }
.sidebar .user-block form { margin-top: var(--sp-3); }
.sidebar .user-block button {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.25);
    color: #e0e7ff;
    padding: var(--sp-2) var(--sp-3);
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 13px;
    width: 100%;
    transition: background 0.1s;
}
.sidebar .user-block button:hover { background: rgba(255,255,255,0.08); }

.main {
    padding: var(--sp-6) var(--sp-8);
    min-width: 0;
}
.container { max-width: var(--content-max); margin: 0 auto; }

/* ============ Cards ============ */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: var(--sp-6);
    margin-bottom: var(--sp-5);
}
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--sp-4);
    margin-bottom: var(--sp-5);
    padding-bottom: var(--sp-4);
    border-bottom: 1px solid var(--color-border);
}
.card-header h1, .card-header h2 { margin: 0; }
.card.compact { padding: var(--sp-4); }

.page-header {
    margin-bottom: var(--sp-5);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--sp-4);
    flex-wrap: wrap;
}
.page-header h1 { margin: 0; }
.page-header .subtitle { color: var(--color-text-muted); font-size: 13px; margin-top: var(--sp-1); }

/* ============ Forms ============ */
label { display: block; font-weight: 600; margin-bottom: var(--sp-2); font-size: 13px; color: var(--color-text); }
label .req { color: var(--color-danger); margin-left: 3px; }
.help { color: var(--color-text-muted); font-size: 12px; margin-top: var(--sp-2); }
input[type=text], input[type=email], input[type=password], input[type=url], input[type=number],
input[type=date], textarea, select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius);
    font-size: 14px;
    font-family: inherit;
    background: #fff;
    color: var(--color-text);
    transition: border-color 0.1s, box-shadow 0.1s;
}
input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}
textarea { min-height: 110px; resize: vertical; font-family: inherit; }
textarea.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; font-size: 13px; }
.field { margin-bottom: var(--sp-4); }
.field-row { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--sp-4); }
@media (max-width: 720px) { .field-row { grid-template-columns: 1fr; } }

/* ============ Buttons ============ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
    padding: 9px 16px;
    border-radius: var(--radius);
    border: 1px solid transparent;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    line-height: 1.2;
    transition: background 0.1s, box-shadow 0.1s, transform 0.05s;
    text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn:active { transform: translateY(0.5px); }
.btn:focus-visible { box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.25); outline: none; }
.btn-primary { background: var(--color-primary); color: #fff; }
.btn-primary:hover { background: var(--color-primary-hover); }
.btn-secondary { background: #fff; color: var(--color-text); border-color: var(--color-border-strong); }
.btn-secondary:hover { background: var(--color-surface-alt); }
.btn-success { background: var(--color-success); color: #fff; }
.btn-success:hover { background: #047857; }
.btn-danger { background: var(--color-danger); color: #fff; }
.btn-danger:hover { background: #b91c1c; }
.btn-ghost { background: transparent; color: var(--color-primary); }
.btn-ghost:hover { background: rgba(30, 58, 138, 0.06); }
.btn-sm { padding: 6px 10px; font-size: 13px; }
.btn-disabled, .btn[disabled] { opacity: 0.55; pointer-events: none; }
.btn .icon { width: 15px; height: 15px; }

/* ============ Alerts ============ */
.alert {
    padding: var(--sp-3) var(--sp-4);
    border-radius: var(--radius);
    margin-bottom: var(--sp-4);
    border: 1px solid;
    font-size: 14px;
}
.alert-success { background: var(--color-success-bg); color: var(--color-success-text); border-color: #a7f3d0; }
.alert-error { background: var(--color-danger-bg); color: var(--color-danger-text); border-color: #fecaca; }
.alert-warn { background: var(--color-warn-bg); color: var(--color-warn-text); border-color: #fde68a; }
.alert-info { background: var(--color-info-bg); color: var(--color-info-text); border-color: #bae6fd; }
.alert ul { margin: var(--sp-1) 0 0 var(--sp-5); padding: 0; }
.alert strong { font-weight: 700; }
.alert-dismiss { float: right; background: transparent; border: none; font-size: 16px; cursor: pointer; color: inherit; opacity: 0.6; padding: 0; }
.alert-dismiss:hover { opacity: 1; }

/* ============ Tables ============ */
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--color-border); vertical-align: top; }
th {
    background: var(--color-surface-alt);
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--color-text-muted);
}
tbody tr:hover { background: var(--color-surface-alt); }
.table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--color-border); }
.table-wrap table { margin: 0; }
.features-table { overflow-x: auto; }
.features-table table { min-width: 1400px; }
.features-table td { max-width: 280px; }

/* ============ Tabs ============ */
.tabs {
    display: flex;
    gap: 2px;
    margin-bottom: var(--sp-4);
    border-bottom: 2px solid var(--color-border);
}
.tabs button {
    padding: var(--sp-3) var(--sp-4);
    border: none;
    background: transparent;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    font-family: inherit;
    color: var(--color-text-muted);
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    display: inline-flex;
    align-items: center;
    gap: var(--sp-2);
}
.tabs button:hover { color: var(--color-text); }
.tabs button.active { color: var(--color-primary); border-bottom-color: var(--color-primary); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* ============ Badges ============ */
.badge {
    display: inline-block;
    padding: 2px 9px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}
.badge-draft { background: var(--color-warn-bg); color: var(--color-warn-text); }
.badge-confirmed { background: var(--color-info-bg); color: var(--color-info-text); }
.badge-features { background: var(--color-success-bg); color: var(--color-success-text); }
.badge-admin { background: #ede9fe; color: #6d28d9; }
.badge-contributor { background: #e0f2fe; color: #075985; }
.badge-inactive { background: #fee2e2; color: #991b1b; }

/* ============ Utilities ============ */
.muted { color: var(--color-text-muted); font-size: 13px; }
.text-sm { font-size: 12px; }
.text-danger { color: var(--color-danger); }
.toolbar { display: flex; gap: var(--sp-2); flex-wrap: wrap; align-items: center; }
.toolbar-between { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: var(--sp-3); }
.stack > * + * { margin-top: var(--sp-3); }
.mt-2 { margin-top: var(--sp-2); } .mt-3 { margin-top: var(--sp-3); } .mt-4 { margin-top: var(--sp-4); }
.mb-2 { margin-bottom: var(--sp-2); } .mb-3 { margin-bottom: var(--sp-3); } .mb-4 { margin-bottom: var(--sp-4); }
.empty-state {
    padding: var(--sp-10) var(--sp-6);
    text-align: center;
    color: var(--color-text-muted);
}
.empty-state h3 { color: var(--color-text); margin-bottom: var(--sp-2); }

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--sp-4);
    margin-bottom: var(--sp-6);
}
.kpi {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--sp-5);
}
.kpi .label { font-size: 12px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--color-text-muted); font-weight: 600; }
.kpi .value { font-size: 28px; font-weight: 700; margin-top: var(--sp-2); color: var(--color-primary); }

/* ============ Story markdown ============ */
pre.story-md {
    white-space: pre-wrap;
    word-wrap: break-word;
    background: var(--color-surface-alt);
    padding: var(--sp-4);
    border-radius: var(--radius);
    font-family: inherit;
    font-size: 14px;
    border: 1px solid var(--color-border);
    line-height: 1.6;
}

/* ============ Auth pages ============ */
.auth-layout {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--sp-6);
    background: linear-gradient(135deg, #1e3a8a 0%, #172554 100%);
}
.auth-card {
    background: #fff;
    border-radius: var(--radius-lg);
    box-shadow: 0 10px 30px rgba(16,24,40,0.15);
    width: 100%;
    max-width: 440px;
    padding: var(--sp-8);
}
.auth-card h1 { text-align: center; color: var(--color-primary); margin-bottom: var(--sp-2); }
.auth-card .subtitle { text-align: center; color: var(--color-text-muted); margin-bottom: var(--sp-6); }
.auth-divider {
    text-align: center;
    margin: var(--sp-5) 0;
    position: relative;
    color: var(--color-text-subtle);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}
.auth-divider::before, .auth-divider::after {
    content: '';
    position: absolute;
    top: 50%;
    width: calc(50% - 28px);
    height: 1px;
    background: var(--color-border);
}
.auth-divider::before { left: 0; }
.auth-divider::after { right: 0; }

/* ============ Quiz specific ============ */
details.quiz-section {
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 8px 14px;
    margin-bottom: var(--sp-2);
    background: var(--color-surface-alt);
    transition: background 0.1s;
}
details.quiz-section[open] { background: var(--color-surface); box-shadow: var(--shadow-sm); }
details.quiz-section > summary {
    cursor: pointer;
    padding: var(--sp-2) 0;
    font-weight: 600;
    color: var(--color-primary);
    user-select: none;
    list-style: none;
    display: flex;
    align-items: center;
    gap: var(--sp-2);
}
details.quiz-section > summary::-webkit-details-marker { display: none; }
details.quiz-section > summary::before {
    content: '▸';
    display: inline-block;
    transition: transform 0.15s;
    color: var(--color-text-muted);
    font-size: 12px;
}
details.quiz-section[open] > summary::before { transform: rotate(90deg); }
.quiz-section-body { padding: var(--sp-3) 0 var(--sp-1); border-top: 1px solid var(--color-border); margin-top: var(--sp-2); }
.quiz-field { margin-bottom: var(--sp-4); }
.quiz-field label { font-weight: 500; font-size: 14px; }
.quiz-radio-group { display: flex; flex-wrap: wrap; gap: 6px 18px; margin-top: var(--sp-1); }
.quiz-radio {
    display: inline-flex; align-items: center; gap: 6px;
    font-weight: 400; font-size: 14px; padding: 4px 0; cursor: pointer;
}
.quiz-radio input { margin: 0; }

/* ============ Master Data ============ */
.option-list { display: flex; flex-direction: column; gap: var(--sp-2); margin-bottom: var(--sp-3); }
.option-row { display: flex; gap: var(--sp-2); align-items: center; }
.option-row input { flex: 1; }

/* ============ Audit ============ */
.audit-action { font-family: ui-monospace, monospace; font-size: 12px; color: var(--color-primary); }
.audit-meta { font-family: ui-monospace, monospace; font-size: 11px; color: var(--color-text-muted); white-space: pre-wrap; word-break: break-all; }

/* ============ Pagination ============ */
.pagination {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    align-items: center;
    margin-top: var(--sp-4);
    padding-top: var(--sp-3);
    border-top: 1px solid var(--color-border);
}
.pagination-link {
    padding: 6px 11px;
    border: 1px solid var(--color-border-strong);
    border-radius: var(--radius);
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 500;
    background: #fff;
    text-decoration: none;
    line-height: 1.2;
    min-width: 32px;
    text-align: center;
}
.pagination-link:hover { background: var(--color-surface-alt); text-decoration: none; }
.pagination-link.active {
    background: var(--color-primary);
    color: #fff;
    border-color: var(--color-primary);
    cursor: default;
}
.pagination-link.disabled {
    color: var(--color-text-subtle);
    background: var(--color-surface-alt);
    pointer-events: none;
}
.pagination-gap { color: var(--color-text-subtle); padding: 0 4px; }
.pagination-summary {
    margin-left: auto;
    color: var(--color-text-muted);
    font-size: 12px;
}