/* ============================================================================
   StoryProof — Brand Design System
   Based on BRAND_GUIDELINES.md v1.0
   ============================================================================ */

:root {
    /* ── Backgrounds ── */
    --bg-primary: #0C0F1A;
    --bg-surface: #111827;

    /* ── Surface Opacity Scale (warm-tinted glass) ── */
    --surface-base: rgba(255, 248, 240, 0.02);
    --surface-raised: rgba(255, 248, 240, 0.04);
    --surface-elevated: rgba(255, 248, 240, 0.06);
    --surface-interactive: rgba(255, 248, 240, 0.08);

    /* ── Brand Colors ── */
    --color-gold: #E2A355;
    --color-gold-light: #F0B866;
    --color-gold-bg: rgba(226, 163, 85, 0.08);
    --color-gold-border: rgba(226, 163, 85, 0.15);

    --color-teal: #5EC4B6;
    --color-teal-bg: rgba(94, 196, 182, 0.08);
    --color-teal-border: rgba(94, 196, 182, 0.20);

    --color-coral: #E87C6C;
    --color-coral-bg: rgba(232, 124, 108, 0.08);
    --color-coral-border: rgba(232, 124, 108, 0.20);

    --color-amber: #D4923A;
    --color-amber-bg: rgba(212, 146, 58, 0.08);
    --color-amber-border: rgba(212, 146, 58, 0.15);

    --color-slate: #6B8AAF;
    --color-slate-bg: rgba(107, 138, 175, 0.08);
    --color-slate-border: rgba(107, 138, 175, 0.15);

    /* ── Text ── */
    --text-primary: rgba(255, 255, 255, 0.85);
    --text-secondary: rgba(255, 255, 255, 0.45);
    --text-faint: rgba(255, 255, 255, 0.25);

    /* ── Light mode text (for gold buttons etc) ── */
    --text-on-gold: #0C0F1A;

    /* ── Borders ── */
    --border-subtle: rgba(255, 255, 255, 0.06);
    --border-default: rgba(255, 255, 255, 0.10);
    --border-emphasis: rgba(255, 255, 255, 0.15);

    /* ── Typography ── */
    --font-serif: 'Instrument Serif', Georgia, 'Times New Roman', serif;
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'SF Mono', Consolas, monospace;

    /* ── Radii ── */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 24px;
    --radius-pill: 9999px;

    /* ── Spacing ── */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 80px;

    /* ── Transitions ── */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 300ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================================
   Reset & Base
   ============================================================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    font-size: 15px;
    line-height: 1.6;
    font-weight: 400;
    color: var(--text-primary);
    background: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* Ambient background glows */
body::before {
    content: '';
    position: fixed;
    top: -20%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(226, 163, 85, 0.07) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

body::after {
    content: '';
    position: fixed;
    bottom: -15%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(94, 196, 182, 0.04) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

body > * {
    position: relative;
    z-index: 1;
}

a {
    color: var(--color-gold);
    text-decoration: none;
    transition: color var(--transition-base);
}

a:hover {
    color: var(--color-gold-light);
}

/* ============================================================================
   Typography Classes (Instrument Serif headlines, Outfit body)
   ============================================================================ */

.display-xl  { font-family: var(--font-serif); font-size: 72px; font-weight: 400; line-height: 1.0; letter-spacing: -3px; }
.display-lg  { font-family: var(--font-serif); font-size: 54px; font-weight: 400; line-height: 1.12; letter-spacing: -1px; }
.display-md  { font-family: var(--font-serif); font-size: 44px; font-weight: 400; line-height: 1.15; letter-spacing: -1px; }
.display-sm  { font-family: var(--font-serif); font-size: 36px; font-weight: 400; line-height: 1.2; letter-spacing: -0.5px; }
.heading-lg  { font-family: var(--font-serif); font-size: 28px; font-weight: 400; line-height: 1.25; letter-spacing: -0.5px; }
.heading-md  { font-family: var(--font-serif); font-size: 22px; font-weight: 400; line-height: 1.3; letter-spacing: -0.3px; }

.body-lg     { font-family: var(--font-sans); font-size: 17px; font-weight: 400; line-height: 1.7; }
.body-md     { font-family: var(--font-sans); font-size: 15px; font-weight: 400; line-height: 1.6; }
.body-sm     { font-family: var(--font-sans); font-size: 13px; font-weight: 400; line-height: 1.5; }
.label-lg    { font-family: var(--font-sans); font-size: 14px; font-weight: 600; line-height: 1.4; }
.label-md    { font-family: var(--font-sans); font-size: 12px; font-weight: 600; line-height: 1.4; }
.label-sm    { font-family: var(--font-sans); font-size: 11px; font-weight: 600; line-height: 1.3; }
.caption     { font-family: var(--font-sans); font-size: 10px; font-weight: 500; line-height: 1.3; }
.mono        { font-family: var(--font-mono); font-size: 13px; font-weight: 400; line-height: 1.5; }

/* ============================================================================
   Navigation
   ============================================================================ */

.top-nav {
    background: var(--surface-raised);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-subtle);
    padding: 0.75rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-left {
    display: flex;
    align-items: center;
    gap: 2.5rem;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.nav-logo-mark {
    width: 36px;
    height: 36px;
    object-fit: contain;
    padding: 6px;
    border-radius: 28%;
    background: linear-gradient(135deg, #E2A355, #F0B866);
    flex-shrink: 0;
}

.nav-logo-text {
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 1.25rem;
    color: white;
    letter-spacing: -0.3px;
}

.nav-links {
    display: flex;
    gap: 4px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-family: var(--font-sans);
    font-weight: 500;
    font-size: 14px;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--surface-interactive);
}

.nav-link.active {
    color: var(--color-gold);
    background: var(--color-gold-bg);
}

.nav-right {
    display: flex;
    align-items: center;
}

.user-menu {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 12px;
    background: var(--surface-base);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-md);
}

.user-avatar {
    width: 32px;
    height: 32px;
    border-radius: 28%;
    background: linear-gradient(135deg, #E2A355, #F0B866);
    color: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-serif);
    font-weight: 400;
    font-size: 16px;
    flex-shrink: 0;
}

.user-details {
    display: flex;
    flex-direction: column;
}

.user-name {
    font-weight: 600;
    font-size: 13px;
    color: var(--text-primary);
}

.user-email {
    font-size: 11px;
    color: var(--text-secondary);
}

.btn-logout {
    padding: 8px 16px;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-logout:hover {
    color: var(--color-coral);
    border-color: var(--color-coral-border);
    background: var(--color-coral-bg);
}

/* ============================================================================
   Dashboard Layout
   ============================================================================ */

.dashboard-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--space-xl) 2rem var(--space-3xl);
}

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--border-subtle);
}

.page-title {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 400;
    line-height: 1.25;
    letter-spacing: -0.5px;
    color: var(--text-primary);
}

.page-actions {
    display: flex;
    gap: 12px;
}

.dashboard-content {
    animation: fadeInUp 0.4s ease-out;
}

/* ============================================================================
   Glass Card System
   ============================================================================ */

.glass-card,
.card {
    background: var(--surface-raised);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.glass-card:hover,
.card:hover {
    background: var(--surface-interactive);
    border-color: var(--border-default);
}

.card {
    padding: var(--space-lg);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-md);
    border-bottom: 1px solid var(--border-subtle);
}

.card-title {
    font-family: var(--font-serif);
    font-size: 22px;
    font-weight: 400;
    line-height: 1.3;
    letter-spacing: -0.3px;
    color: var(--text-primary);
}

.card-body {
    padding: 0;
}

/* ============================================================================
   Buttons
   ============================================================================ */

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 600;
    line-height: 1.4;
    cursor: pointer;
    transition: all var(--transition-base);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    text-decoration: none;
    position: relative;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Primary: Gold gradient */
.btn-primary {
    background: linear-gradient(135deg, #E2A355, #F0B866);
    color: var(--text-on-gold);
    border: none;
}

.btn-primary:hover:not(:disabled) {
    filter: brightness(1.1);
    transform: translateY(-1px);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

/* Secondary: Ghost with gold border */
.btn-secondary {
    background: transparent;
    color: var(--color-gold);
    border: 1px solid var(--color-gold-border);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--color-gold-bg);
    border-color: var(--color-gold);
}

/* Ghost: Transparent with white text */
.btn-ghost {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-default);
}

.btn-ghost:hover:not(:disabled) {
    background: var(--surface-interactive);
    border-color: var(--border-emphasis);
}

/* Danger: Coral */
.btn-danger {
    background: transparent;
    color: var(--color-coral);
    border: 1px solid var(--color-coral-border);
}

.btn-danger:hover:not(:disabled) {
    background: var(--color-coral-bg);
    border-color: var(--color-coral);
}

.btn-full { width: 100%; }
.btn-sm { padding: 8px 16px; font-size: 13px; }

/* ============================================================================
   Status Badges
   ============================================================================ */

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-family: var(--font-sans);
    font-size: 12px;
    font-weight: 600;
    line-height: 1.4;
    transition: all var(--transition-base);
}

.badge-validated,
.badge-completed,
.badge-success {
    color: var(--color-teal);
    background: var(--color-teal-bg);
    border: 1px solid var(--color-teal-border);
}

.badge-blocked,
.badge-failed,
.badge-error {
    color: var(--color-coral);
    background: var(--color-coral-bg);
    border: 1px solid var(--color-coral-border);
}

.badge-observation,
.badge-warning,
.badge-drift {
    color: var(--color-gold);
    background: var(--color-gold-bg);
    border: 1px solid var(--color-gold-border);
}

.badge-running,
.badge-info {
    color: var(--color-slate);
    background: var(--color-slate-bg);
    border: 1px solid var(--color-slate-border);
}

.badge-neutral {
    color: var(--text-secondary);
    background: var(--surface-raised);
    border: 1px solid var(--border-subtle);
}

/* ============================================================================
   Stat Cards
   ============================================================================ */

.stat-card {
    background: var(--surface-raised);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    display: flex;
    align-items: center;
    gap: var(--space-md);
    transition: all var(--transition-base);
}

.stat-card:hover {
    background: var(--surface-interactive);
    border-color: var(--border-default);
    transform: translateY(-2px);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-card-gold .stat-icon {
    background: var(--color-gold-bg);
    color: var(--color-gold);
    border: 1px solid var(--color-gold-border);
}

.stat-card-teal .stat-icon {
    background: var(--color-teal-bg);
    color: var(--color-teal);
    border: 1px solid var(--color-teal-border);
}

.stat-card-slate .stat-icon {
    background: var(--color-slate-bg);
    color: var(--color-slate);
    border: 1px solid var(--color-slate-border);
}

.stat-card-coral .stat-icon {
    background: var(--color-coral-bg);
    color: var(--color-coral);
    border: 1px solid var(--color-coral-border);
}

.stat-content {
    flex: 1;
}

.stat-label {
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.stat-value {
    font-family: var(--font-serif);
    font-size: 32px;
    font-weight: 400;
    color: var(--text-primary);
    line-height: 1;
    letter-spacing: -0.5px;
}

/* ============================================================================
   Forms
   ============================================================================ */

.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    background: var(--surface-base);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 15px;
    color: var(--text-primary);
    transition: all var(--transition-base);
}

.form-input::placeholder {
    color: var(--text-faint);
}

.form-input:hover {
    border-color: var(--border-emphasis);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-gold);
    box-shadow: 0 0 0 2px var(--color-gold-border);
}

.form-input:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    background: var(--surface-base);
}

select.form-input {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='none' stroke='rgba(255,255,255,0.45)' viewBox='0 0 24 24'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

/* ============================================================================
   Alerts
   ============================================================================ */

.alert {
    padding: var(--space-md);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
}

.alert-success {
    background: var(--color-teal-bg);
    border: 1px solid var(--color-teal-border);
    color: var(--color-teal);
}

.alert-error {
    background: var(--color-coral-bg);
    border: 1px solid var(--color-coral-border);
    color: var(--color-coral);
}

.alert-warning {
    background: var(--color-gold-bg);
    border: 1px solid var(--color-gold-border);
    color: var(--color-gold);
}

.alert-info {
    background: var(--color-slate-bg);
    border: 1px solid var(--color-slate-border);
    color: var(--color-slate);
}

/* ============================================================================
   Data Tables
   ============================================================================ */

.data-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
}

.data-table thead tr {
    background: var(--surface-elevated);
}

.data-table th {
    padding: 12px 20px;
    text-align: left;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 11px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-subtle);
}

.data-table td {
    padding: 14px 20px;
    color: var(--text-primary);
    font-size: 14px;
    border-bottom: 1px solid var(--border-subtle);
}

.data-table tbody tr {
    transition: background var(--transition-base);
}

.data-table tbody tr:hover {
    background: var(--surface-interactive);
}

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

/* ============================================================================
   Confidence Ring
   ============================================================================ */

.confidence-ring {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.confidence-ring svg {
    transform: rotate(-90deg);
}

.confidence-ring-value {
    position: absolute;
    font-family: var(--font-serif);
    font-weight: 400;
    letter-spacing: -0.5px;
}

/* Threshold coloring */
.confidence-high { color: var(--color-teal); }
.confidence-mid { color: var(--color-gold); }
.confidence-low { color: var(--color-coral); }

.confidence-ring-high circle.ring-fill { stroke: var(--color-teal); }
.confidence-ring-mid circle.ring-fill { stroke: var(--color-gold); }
.confidence-ring-low circle.ring-fill { stroke: var(--color-coral); }

/* ============================================================================
   Status Indicators (small rounded squares)
   ============================================================================ */

.status-indicator {
    width: 24px;
    height: 24px;
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    font-size: 12px;
}

.status-validated {
    background: var(--color-teal-bg);
    border: 1px solid var(--color-teal-border);
    color: var(--color-teal);
}

.status-observation {
    background: var(--color-gold-bg);
    border: 1px solid var(--color-gold-border);
    color: var(--color-gold);
}

.status-blocked {
    background: var(--color-coral-bg);
    border: 1px solid var(--color-coral-border);
    color: var(--color-coral);
}

.status-running {
    background: var(--color-slate-bg);
    border: 1px solid var(--color-slate-border);
    color: var(--color-slate);
}

/* ============================================================================
   Accordion
   ============================================================================ */

.accordion-header {
    cursor: pointer;
    user-select: none;
    background: transparent;
    border: none;
    outline: none;
    font-family: var(--font-sans);
    color: var(--text-primary);
}

.accordion-header:hover {
    background: var(--surface-interactive);
}

.accordion-icon {
    transition: transform 0.2s ease-in-out;
    color: var(--text-secondary);
}

.accordion-content {
    overflow: hidden;
}

/* ============================================================================
   Filter Pills
   ============================================================================ */

.filter-btn {
    cursor: pointer;
    background: transparent;
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-pill);
    padding: 6px 16px;
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all var(--transition-base);
    outline: none;
}

.filter-btn:hover:not(.active) {
    background: var(--surface-interactive);
    border-color: var(--border-default);
    color: var(--text-primary);
}

.filter-btn.active {
    background: var(--color-gold-bg);
    border-color: var(--color-gold-border);
    color: var(--color-gold);
    font-weight: 600;
}

/* ============================================================================
   Prose (formatted text blocks)
   ============================================================================ */

.prose {
    color: var(--text-primary);
    font-size: 14px;
    line-height: 1.6;
}

.prose h1, .prose h2, .prose h3, .prose h4 {
    color: var(--text-primary);
    font-weight: 600;
    margin-top: 1.5em;
    margin-bottom: 0.5em;
}

.prose p { margin-bottom: 1em; }
.prose ul, .prose ol { margin-left: 1.5em; margin-bottom: 1em; }

.prose code {
    background: var(--surface-elevated);
    padding: 0.2em 0.4em;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.875em;
}

/* ============================================================================
   Utility Classes
   ============================================================================ */

.text-gold { color: var(--color-gold); }
.text-teal { color: var(--color-teal); }
.text-coral { color: var(--color-coral); }
.text-slate { color: var(--color-slate); }
.text-primary { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-faint { color: var(--text-faint); }

.bg-surface { background: var(--bg-surface); }

.space-y-4 > * + * { margin-top: var(--space-md); }
.space-y-6 > * + * { margin-top: var(--space-lg); }

.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid var(--border-default);
    border-radius: 50%;
    border-top-color: var(--color-gold);
    animation: spin 1s ease-in-out infinite;
}

/* ============================================================================
   Responsive
   ============================================================================ */

@media (max-width: 1024px) {
    .dashboard-container {
        padding: var(--space-lg) 1.5rem var(--space-2xl);
    }
}

@media (max-width: 768px) {
    .nav-links { display: none; }
    .user-details { display: none; }

    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-md);
    }

    .page-title { font-size: 24px; }

    .page-actions {
        width: 100%;
    }
}

@media (max-width: 640px) {
    .dashboard-container {
        padding: var(--space-md) 1rem var(--space-xl);
    }

    .nav-container { padding: 0 1rem; }
    .user-info { padding: 4px 8px; }
    .user-avatar { width: 28px; height: 28px; font-size: 14px; }
}