/* ── Reset & Base ───────────────────────────────────────────── */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-primary: #1a1d2e;
    --bg-secondary: #222640;
    --bg-card: rgba(34, 38, 64, 0.9);
    --bg-card-hover: rgba(44, 48, 80, 0.95);
    --bg-glass: rgba(255, 255, 255, 0.05);
    --border: rgba(255, 255, 255, 0.1);
    --border-hover: rgba(99, 102, 241, 0.4);
    --text-primary: #eef0f6;
    --text-secondary: #a8adc6;
    --text-muted: #7a80a0;
    --accent: #6366f1;
    --accent-light: #a78bfa;
    --accent-glow: rgba(99, 102, 241, 0.2);
    --green: #34d399;
    --green-dim: rgba(52, 211, 153, 0.18);
    --red: #f87171;
    --red-dim: rgba(248, 113, 113, 0.18);
    --amber: #fbbf24;
    --amber-dim: rgba(251, 191, 36, 0.18);
    --blue: #60a5fa;
    --blue-dim: rgba(96, 165, 250, 0.18);
    --purple: #c084fc;
    --purple-dim: rgba(192, 132, 252, 0.18);
    --radius: 14px;
    --radius-sm: 10px;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    background-image:
        radial-gradient(ellipse at 20% 0%, rgba(99, 102, 241, 0.12) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 100%, rgba(168, 85, 247, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 50% 50%, rgba(34, 38, 64, 0.5) 0%, transparent 70%);
}

/* ── App Container ──────────────────────────────────────────── */
.app {
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 24px 48px;
}

/* ── Header ─────────────────────────────────────────────────── */
.header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 20px 0;
    border-bottom: 1px solid var(--border);
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 16px;
}

.header-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

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

.logo-icon {
    width: 40px;
    height: 40px;
    flex-shrink: 0;
}

.logo h1 {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

.subtitle {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 400;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.header-controls {
    display: flex;
    align-items: flex-end;
    gap: 12px;
    flex-wrap: wrap;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.input-group label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    font-weight: 500;
}

.input-group input,
.input-group select {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    padding: 8px 12px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    outline: none;
    transition: border-color var(--transition);
    min-width: 80px;
}

.input-group input:focus,
.input-group select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.input-group select {
    cursor: pointer;
    -webkit-appearance: none;
    padding-right: 28px;
    background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1L5 5L9 1' stroke='%23a8adc6' stroke-width='1.5' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 10px center;
}

#symbolInput {
    width: 100px;
}

#limitInput {
    width: 80px;
}

/* ── Primary Button ─────────────────────────────────────────── */
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 9px 20px;
    background: linear-gradient(135deg, var(--accent) 0%, #7c3aed 100%);
    color: white;
    border: none;
    border-radius: var(--radius-sm);
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    box-shadow: 0 2px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 20px rgba(99, 102, 241, 0.5);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* ── Cards ──────────────────────────────────────────────────── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
    backdrop-filter: blur(12px);
    transition: border-color var(--transition), box-shadow var(--transition);
}

.card:hover {
    border-color: var(--border-hover);
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.08);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 16px;
}

.card-header h2 {
    font-size: 0.95rem;
    font-weight: 600;
    letter-spacing: -0.01em;
}

/* ── Summary Cards ──────────────────────────────────────────── */
.summary-cards {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

.summary-card {
    padding: 18px 20px;
    position: relative;
    overflow: hidden;
}

.summary-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    opacity: 0.8;
    transition: opacity var(--transition);
}

.summary-card:hover::before {
    opacity: 1;
}

#cardLow::before {
    background: linear-gradient(90deg, var(--red), #fca5a5);
}

#cardHigh::before {
    background: linear-gradient(90deg, var(--green), #6ee7b7);
}

#cardLatest::before {
    background: linear-gradient(90deg, var(--blue), #93c5fd);
}

#cardRange::before {
    background: linear-gradient(90deg, var(--amber), #fde68a);
}

.card-label {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    font-weight: 500;
    margin-bottom: 6px;
}

.card-value {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
    letter-spacing: -0.02em;
}

#cardLow .card-value {
    color: var(--red);
}

#cardHigh .card-value {
    color: var(--green);
}

#cardLatest .card-value {
    color: var(--blue);
}

#cardRange .card-value {
    color: var(--amber);
}

.card-sub {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 4px;
    font-family: 'JetBrains Mono', monospace;
}

/* ── Badges ─────────────────────────────────────────────────── */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 600;
    font-family: 'JetBrains Mono', monospace;
}

.badge-blue {
    background: var(--blue-dim);
    color: var(--blue);
}

.badge-green {
    background: var(--green-dim);
    color: var(--green);
}

.badge-purple {
    background: var(--purple-dim);
    color: var(--purple);
}

.badge-amber {
    background: var(--amber-dim);
    color: var(--amber);
}

/* ── Chart Section ──────────────────────────────────────────── */
.chart-section {
    margin-bottom: 24px;
}

.chart-container {
    position: relative;
    width: 100%;
    height: 500px;
}

.chart-container canvas {
    width: 100% !important;
    height: 100% !important;
}

.chart-legend {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.7rem;
    color: var(--text-secondary);
}

.legend-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

/* ── Projections Grid ───────────────────────────────────────── */
.projections-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}

/* ── Tables ──────────────────────────────────────────────────── */
.table-scroll {
    max-height: 360px;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: rgba(255, 255, 255, 0.15) transparent;
}

.table-scroll::-webkit-scrollbar {
    width: 5px;
}

.table-scroll::-webkit-scrollbar-track {
    background: transparent;
}

.table-scroll::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.15);
    border-radius: 4px;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8rem;
}

thead {
    position: sticky;
    top: 0;
    z-index: 2;
}

th {
    padding: 8px 12px;
    text-align: left;
    font-size: 0.68rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    font-weight: 500;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
}

td {
    padding: 8px 12px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    transition: background var(--transition);
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
}

tr:hover td {
    background: var(--bg-glass);
}

td.price-up {
    color: var(--green);
}

td.price-down {
    color: var(--red);
}

.tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.68rem;
    font-weight: 500;
}

.tag-gann {
    background: var(--purple-dim);
    color: var(--purple);
}

.tag-fib {
    background: var(--blue-dim);
    color: var(--blue);
}

.tag-ext {
    background: var(--amber-dim);
    color: var(--amber);
}

.tag-support {
    background: var(--green-dim);
    color: var(--green);
}

.tag-resistance {
    background: var(--red-dim);
    color: var(--red);
}

/* ── Info Box ───────────────────────────────────────────────── */
.info-box {
    background: rgba(99, 102, 241, 0.08);
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--radius-sm);
    padding: 16px 20px;
    margin-bottom: 16px;
    font-size: 0.82rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

.info-box strong {
    color: var(--text-primary);
}

.info-box .highlight {
    display: inline-block;
    padding: 1px 6px;
    border-radius: 4px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
}

.info-box .hl-cardinal {
    background: var(--red-dim);
    color: var(--red);
}

.info-box .hl-ordinal {
    background: var(--green-dim);
    color: var(--green);
}

.info-box .hl-center {
    background: var(--purple-dim);
    color: var(--purple);
}

/* ── Grid Section ───────────────────────────────────────────── */
.grid-container {
    display: flex;
    justify-content: center;
    padding: 16px 0;
}

.grid-legend {
    display: flex;
    gap: 20px;
    justify-content: center;
    margin-top: 12px;
    flex-wrap: wrap;
}

.grid-legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.grid-legend-swatch {
    width: 16px;
    height: 16px;
    border-radius: 3px;
}

#gridCanvas {
    border-radius: var(--radius);
    max-width: 100%;
}

/* ── Loading ────────────────────────────────────────────────── */
.loading-overlay {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    background: rgba(26, 29, 46, 0.88);
    backdrop-filter: blur(8px);
}

.loading-overlay p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ── Empty State ────────────────────────────────────────────── */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 55vh;
    gap: 20px;
}

.empty-icon {
    opacity: 0.8;
    animation: float 3s ease-in-out infinite;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0);
    }

    50% {
        transform: translateY(-10px);
    }
}

.empty-state h2 {
    font-size: 1.6rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--text-primary), var(--accent-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.empty-state p {
    color: var(--text-secondary);
    line-height: 1.7;
    max-width: 500px;
    font-size: 1rem;
}

.empty-state .symbol-examples {
    display: flex;
    gap: 10px;
    margin-top: 4px;
    flex-wrap: wrap;
    justify-content: center;
}

.empty-state .symbol-chip {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 6px 16px;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.85rem;
    color: var(--accent-light);
    cursor: pointer;
    transition: all var(--transition);
}

.empty-state .symbol-chip:hover {
    background: var(--accent-glow);
    border-color: var(--accent);
    transform: translateY(-1px);
}

.empty-state .arrow-hint {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 8px;
    animation: pulseHint 2s ease-in-out infinite;
}

@keyframes pulseHint {

    0%,
    100% {
        opacity: 0.6;
    }

    50% {
        opacity: 1;
    }
}

/* ── Utility ────────────────────────────────────────────────── */
.hidden {
    display: none !important;
}

.main-content {
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 1024px) {
    .summary-cards {
        grid-template-columns: repeat(2, 1fr);
    }

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

@media (max-width: 640px) {
    html {
        font-size: 13px;
    }

    .app {
        padding: 0 12px 32px;
    }

    .header {
        flex-direction: column;
        align-items: stretch;
    }

    .header-controls {
        flex-wrap: wrap;
    }

    .summary-cards {
        grid-template-columns: 1fr 1fr;
    }

    .chart-container {
        height: 350px;
    }
}