/* ============================================================
   Nakshatra Identification Guide — tool-specific styles
   Purple accents for Indian Sky
   ============================================================ */

.nak-container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

/* --- Hero --- */
.nak-hero {
    text-align: center;
    margin-bottom: var(--space-6);
}

.nak-hero h1 {
    font-family: var(--font-display);
    font-size: var(--text-4xl);
    font-weight: 800;
    background: linear-gradient(135deg, var(--color-purple-300), var(--color-gold-400));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-2);
}

.nak-subtitle {
    color: var(--text-secondary);
    font-size: var(--text-xl);
    margin: 0;
}

/* --- Current Moon Nakshatra (Hero Card) --- */
.nak-current-section {
    margin-bottom: var(--space-8);
}

.nak-current-card {
    background: var(--bg-surface);
    border: 2px solid var(--color-purple-600);
    border-radius: var(--radius-xl);
    padding: var(--space-8) var(--space-6);
    text-align: center;
    box-shadow: var(--shadow-glow-purple), 0 8px 32px rgba(106, 27, 154, 0.12);
    position: relative;
    overflow: hidden;
}

.nak-current-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--color-purple-600), var(--color-gold-500), var(--color-purple-600));
}

.nak-current-label {
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-purple-300);
    margin-bottom: var(--space-3);
}

.nak-current-name {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: 800;
    color: var(--text-heading);
    margin-bottom: var(--space-3);
}

.nak-current-details {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-4);
    font-size: var(--text-sm);
    color: var(--text-secondary);
}

.nak-current-detail {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.nak-current-detail .detail-label {
    color: var(--text-tertiary);
}

.nak-current-detail .detail-value {
    color: var(--text-primary);
    font-weight: 600;
}

/* --- Controls --- */
.nak-controls {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
    align-items: flex-end;
}

.nak-control-group {
    flex: 1;
    min-width: 200px;
}

.nak-filter-group {
    display: flex;
    gap: 2px;
    background: var(--bg-input);
    border: 1px solid var(--border-default);
    border-radius: var(--radius-md);
    padding: 2px;
}

.nak-filter-group .orbit-toggle-btn.active {
    background: rgba(106, 27, 154, 0.25);
    color: var(--color-purple-300);
}

/* --- Nakshatra Grid --- */
.nak-grid-section {
    margin-bottom: var(--space-8);
}

.nak-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: var(--space-4);
}

/* --- Nakshatra Card --- */
.nak-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-5);
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.nak-card:hover {
    border-color: var(--color-purple-600);
    box-shadow: var(--shadow-glow-purple);
    transform: translateY(-2px);
}

.nak-card.nak-active {
    border-color: var(--color-purple-500);
    box-shadow: var(--shadow-glow-purple), 0 0 30px rgba(106, 27, 154, 0.15);
}

.nak-card.nak-active::before {
    content: 'Moon is here';
    position: absolute;
    top: var(--space-3);
    right: var(--space-3);
    font-family: var(--font-display);
    font-size: var(--text-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-purple-300);
    background: rgba(106, 27, 154, 0.2);
    border: 1px solid rgba(106, 27, 154, 0.35);
    padding: 2px var(--space-2);
    border-radius: var(--radius-full);
}

.nak-card-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
}

.nak-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: rgba(106, 27, 154, 0.15);
    border: 1px solid rgba(106, 27, 154, 0.3);
    color: var(--color-purple-300);
    font-family: var(--font-display);
    font-size: var(--text-sm);
    font-weight: 700;
    flex-shrink: 0;
}

.nak-card.nak-active .nak-number {
    background: rgba(106, 27, 154, 0.3);
    border-color: var(--color-purple-400);
    color: var(--color-purple-300);
    box-shadow: 0 0 10px rgba(142, 36, 170, 0.3);
}

.nak-name-block {
    flex: 1;
    min-width: 0;
}

.nak-name {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--text-heading);
    margin-bottom: 2px;
    line-height: var(--leading-tight);
}

.nak-stars {
    font-size: var(--text-sm);
    color: var(--color-gold-400);
    line-height: var(--leading-tight);
}

/* Card body meta rows */
.nak-meta {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2) var(--space-3);
    margin-bottom: var(--space-3);
    font-size: var(--text-sm);
}

.nak-meta-item {
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.nak-meta-label {
    font-size: var(--text-xs);
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    font-family: var(--font-display);
    font-weight: 500;
}

.nak-meta-value {
    color: var(--text-primary);
    font-weight: 500;
}

/* Visibility badge */
.nak-vis-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-1);
    padding: 1px var(--space-2);
    border-radius: var(--radius-full);
    font-family: var(--font-display);
    font-size: var(--text-xs);
    font-weight: 600;
}

.nak-vis-badge.vis-naked {
    background: rgba(34, 197, 94, 0.12);
    color: var(--color-green-400);
    border: 1px solid rgba(34, 197, 94, 0.25);
}

.nak-vis-badge.vis-binoculars {
    background: rgba(245, 158, 11, 0.12);
    color: var(--color-gold-400);
    border: 1px solid rgba(245, 158, 11, 0.25);
}

.nak-vis-badge.vis-dark {
    background: rgba(100, 116, 139, 0.12);
    color: var(--text-secondary);
    border: 1px solid rgba(100, 116, 139, 0.2);
}

.nak-vis-badge.vis-marginal {
    background: rgba(239, 68, 68, 0.1);
    color: var(--color-red-400);
    border: 1px solid rgba(239, 68, 68, 0.2);
}

/* Horizon status */
.nak-horizon {
    font-size: var(--text-xs);
    font-weight: 600;
    padding: 1px var(--space-2);
    border-radius: var(--radius-full);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.nak-horizon.above {
    color: var(--color-green-400);
    background: rgba(34, 197, 94, 0.1);
}

.nak-horizon.below {
    color: var(--text-tertiary);
    background: rgba(100, 116, 139, 0.1);
}

/* Description */
.nak-desc {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    line-height: var(--leading-relaxed);
    margin: 0;
    border-top: 1px solid var(--border-subtle);
    padding-top: var(--space-3);
}

/* Longitude span bar */
.nak-longitude-bar {
    width: 100%;
    height: 4px;
    background: var(--bg-input);
    border-radius: 2px;
    margin-top: var(--space-2);
    overflow: hidden;
}

.nak-longitude-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-purple-600), var(--color-purple-400));
    border-radius: 2px;
    transition: width var(--transition-base);
}

/* Tip card */
.nak-tip {
    margin-bottom: var(--space-6);
}

.nak-tip h3 {
    font-family: var(--font-display);
    color: var(--color-purple-300);
}


/* Disabled filter buttons during daytime */
.nak-filter-disabled {
    opacity: 0.3 !important;
    cursor: not-allowed !important;
    pointer-events: none;
}

/* Rasi badge */
.nak-rasi-badge {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--color-purple-300);
    background: rgba(106, 27, 154, 0.15);
    padding: 1px var(--space-2);
    border-radius: var(--radius-full);
    border: 1px solid rgba(106, 27, 154, 0.25);
}

/* --- No results --- */
.nak-no-results {
    text-align: center;
    padding: var(--space-10);
    color: var(--text-tertiary);
    font-size: var(--text-lg);
}

/* --- Visualization Sections --- */
.viz-section { margin-top: var(--space-6); margin-bottom: var(--space-6); }
.viz-card { padding: var(--space-6); border: 2px solid var(--color-purple-600); box-shadow: var(--shadow-glow-purple), 0 8px 32px rgba(106, 27, 154, 0.12); position: relative; overflow: hidden; }
.viz-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 3px; background: linear-gradient(90deg, var(--color-purple-600), var(--color-gold-500), var(--color-purple-600)); }
.viz-header { text-align: center; margin-bottom: var(--space-4); }
.viz-title { font-family: var(--font-display); font-size: var(--text-xl); font-weight: 800; color: var(--text-heading); margin-bottom: var(--space-1); }
.viz-subtitle { color: var(--text-tertiary); font-size: var(--text-sm); margin: 0; }
.viz-card canvas { display: block; width: 100%; max-width: 800px; margin: 0 auto var(--space-4); border-radius: var(--radius-md); }
.viz-slider-row { display: flex; align-items: center; gap: var(--space-3); max-width: 600px; margin: 0 auto var(--space-4); }
.viz-slider-label { font-family: var(--font-display); font-size: var(--text-sm); font-weight: 600; color: var(--text-tertiary); flex-shrink: 0; }
.viz-slider { flex: 1; -webkit-appearance: none; appearance: none; height: 6px; background: var(--bg-input); border-radius: 3px; outline: none; }
.viz-slider::-webkit-slider-thumb { -webkit-appearance: none; appearance: none; width: 20px; height: 20px; border-radius: 50%; background: var(--color-purple-400); border: 2px solid var(--color-purple-300); cursor: grab; box-shadow: 0 0 8px rgba(168, 85, 247, 0.4); }
.viz-slider::-moz-range-thumb { width: 20px; height: 20px; border-radius: 50%; background: var(--color-purple-400); border: 2px solid var(--color-purple-300); cursor: grab; }
.viz-slider-value { font-family: var(--font-display); font-size: var(--text-base); font-weight: 700; color: #fbbf24; min-width: 80px; text-align: right; }
.viz-explanation { text-align: center; font-size: var(--text-sm); color: var(--text-secondary); line-height: var(--leading-relaxed); max-width: 600px; margin: 0 auto; }
.viz-explanation strong { color: #fbbf24; }
@media (max-width: 600px) { .viz-title { font-size: var(--text-lg); } .viz-slider-row { flex-wrap: wrap; } .viz-slider-value { width: 100%; text-align: center; } }

/* --- Responsive --- */
@media (max-width: 767px) {
    .nak-hero h1 {
        font-size: var(--text-2xl);
    }

    .nak-current-name {
        font-size: var(--text-2xl);
    }

    .nak-current-card {
        padding: var(--space-6) var(--space-4);
    }

    .nak-grid {
        grid-template-columns: 1fr;
    }

    .nak-current-details {
        flex-direction: column;
        gap: var(--space-2);
    }

    .nak-controls {
        flex-direction: column;
    }

    .nak-meta {
        grid-template-columns: 1fr;
    }
}