/* Skhand Web UI — Theme matching CLI display.py colors */

:root {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-card: #0f3460;
    --bg-input: #1e2a4a;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0b0;
    --text-muted: #707080;
    --gold: #FFD700;
    --blue: #1E90FF;
    --green: #00CD66;
    --magenta: #FF69B4;
    --red: #FF4444;
    --border-radius: 8px;
}

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

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    min-height: 100vh;
}

/* ─── Navigation ─────────────────────────────────────────────────────── */

nav {
    background: var(--bg-secondary);
    border-bottom: 2px solid var(--magenta);
    padding: 0 2rem;
    display: flex;
    align-items: center;
    gap: 2rem;
    height: 56px;
    position: sticky;
    top: 0;
    z-index: 100;
}

nav .logo {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--magenta);
    text-decoration: none;
    letter-spacing: 0.05em;
}

nav .logo span {
    color: var(--text-secondary);
    font-weight: 400;
    font-size: 0.85rem;
    margin-left: 0.5rem;
}

nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
    transition: color 0.2s, border-color 0.2s;
}

nav a:hover,
nav a.active {
    color: var(--text-primary);
    border-bottom-color: var(--magenta);
}

/* ─── Layout ─────────────────────────────────────────────────────────── */

main {
    max-width: 960px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
}

h1 {
    color: var(--magenta);
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

/* ─── Ask Page ───────────────────────────────────────────────────────── */

.ask-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.ask-input-row {
    display: flex;
    gap: 0.75rem;
}

.ask-input {
    flex: 1;
    background: var(--bg-input);
    border: 1px solid #333;
    border-radius: var(--border-radius);
    padding: 0.85rem 1rem;
    color: var(--text-primary);
    font-size: 1.05rem;
    outline: none;
    transition: border-color 0.2s;
}

.ask-input:focus {
    border-color: var(--magenta);
}

.ask-options {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.ask-options label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    cursor: pointer;
}

.ask-options input[type="checkbox"] {
    accent-color: var(--green);
}

/* ─── Buttons ────────────────────────────────────────────────────────── */

.btn {
    background: var(--magenta);
    color: #fff;
    border: none;
    border-radius: var(--border-radius);
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s;
    white-space: nowrap;
}

.btn:hover { opacity: 0.85; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.85rem;
}

.btn-gold { background: var(--gold); color: #1a1a2e; }
.btn-blue { background: var(--blue); }
.btn-green { background: var(--green); color: #1a1a2e; }
.btn-red { background: var(--red); }

/* ─── Answer Panels ──────────────────────────────────────────────────── */

.answer-container {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.panel {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 1.25rem 1.5rem;
    border-left: 4px solid;
}

.panel-shastra { border-left-color: var(--gold); }
.panel-science { border-left-color: var(--blue); }
.panel-setu    { border-left-color: var(--green); }

.panel-header {
    font-weight: 700;
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

.panel-shastra .panel-header { color: var(--gold); }
.panel-science .panel-header { color: var(--blue); }
.panel-setu    .panel-header { color: var(--green); }

.panel-body {
    color: var(--text-primary);
    font-size: 0.95rem;
    line-height: 1.7;
}

.panel-body p { margin-bottom: 0.6rem; }
.panel-body strong { color: var(--text-primary); }
.panel-body em { color: var(--gold); font-style: italic; }
.panel-body ul, .panel-body ol { margin-left: 1.5rem; margin-bottom: 0.6rem; }
.panel-body code {
    background: rgba(255, 255, 255, 0.08);
    padding: 0.15rem 0.4rem;
    border-radius: 3px;
    font-size: 0.9em;
}

/* ─── Usage / Meta ───────────────────────────────────────────────────── */

.usage-bar {
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-top: 1rem;
    text-align: right;
}

/* ─── Loading ────────────────────────────────────────────────────────── */

.loading {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-secondary);
    padding: 1.5rem 0;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--text-muted);
    border-top-color: var(--magenta);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ─── Graph Page ─────────────────────────────────────────────────────── */

.search-row {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1.5rem;
}

.search-input {
    flex: 1;
    background: var(--bg-input);
    border: 1px solid #333;
    border-radius: var(--border-radius);
    padding: 0.7rem 1rem;
    color: var(--text-primary);
    font-size: 0.95rem;
    outline: none;
}

.search-input:focus { border-color: var(--magenta); }

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 0.5rem;
}

th {
    text-align: left;
    padding: 0.6rem 0.75rem;
    background: var(--bg-secondary);
    color: var(--magenta);
    font-size: 0.85rem;
    font-weight: 600;
    border-bottom: 1px solid #333;
}

td {
    padding: 0.55rem 0.75rem;
    border-bottom: 1px solid rgba(255,255,255,0.05);
    font-size: 0.9rem;
    color: var(--text-primary);
}

tr:hover td { background: rgba(255,255,255,0.03); }

.confidence-badge {
    display: inline-block;
    padding: 0.15rem 0.5rem;
    border-radius: 3px;
    font-size: 0.8rem;
    font-weight: 600;
}

.conf-high { background: rgba(0, 205, 102, 0.2); color: var(--green); }
.conf-med  { background: rgba(255, 215, 0, 0.2); color: var(--gold); }
.conf-low  { background: rgba(255, 68, 68, 0.2); color: var(--red); }

/* ─── Learn Page ─────────────────────────────────────────────────────── */

.card-container {
    max-width: 640px;
    margin: 0 auto;
}

.flashcard {
    background: var(--bg-secondary);
    border: 1px solid #333;
    border-radius: var(--border-radius);
    padding: 2rem;
    text-align: center;
    min-height: 180px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    cursor: pointer;
    transition: border-color 0.2s;
}

.flashcard:hover { border-color: var(--magenta); }

.flashcard-front {
    font-size: 1.15rem;
    line-height: 1.7;
}

.flashcard-back {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--green);
}

.flashcard-meta {
    color: var(--text-muted);
    font-size: 0.8rem;
    margin-top: 0.75rem;
}

.rating-buttons {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    margin-top: 1.25rem;
}

.rating-buttons .btn {
    min-width: 80px;
}

.card-progress {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 1rem;
}

.card-nav {
    text-align: center;
    margin-top: 1.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

/* ─── Stats ──────────────────────────────────────────────────────────── */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    padding: 1.25rem;
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--magenta);
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* ─── Status Page ────────────────────────────────────────────────────── */

.status-ok { color: var(--green); font-weight: 600; }
.status-err { color: var(--red); font-weight: 600; }
.status-warn { color: var(--gold); font-weight: 600; }

/* ─── Empty state ────────────────────────────────────────────────────── */

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-muted);
}

.empty-state p {
    margin-top: 0.5rem;
    font-size: 0.95rem;
}

/* ─── Error ──────────────────────────────────────────────────────────── */

.error-msg {
    background: rgba(255, 68, 68, 0.1);
    border: 1px solid var(--red);
    border-radius: var(--border-radius);
    padding: 1rem;
    color: var(--red);
    margin: 1rem 0;
}

/* ─── Responsive ─────────────────────────────────────────────────────── */

@media (max-width: 640px) {
    nav { padding: 0 1rem; gap: 1rem; }
    main { padding: 1.5rem 1rem; }
    .ask-input-row { flex-direction: column; }
    .rating-buttons { flex-wrap: wrap; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
}