:root {
    /* Light Theme */
    --bg: #f8fafc;
    --panel-bg: rgba(255, 255, 255, 0.7);
    --card-bg: rgba(255, 255, 255, 0.85);
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border: rgba(226, 232, 240, 0.8);
    --border-strong: #cbd5e1;
    
    --blue: #2563eb;
    --blue-bg: #eff6ff;
    --green: #16a34a;
    --green-bg: #f0fdf4;
    --red: #dc2626;
    --red-bg: #fef2f2;
    --yellow: #ca8a04;
    --yellow-bg: #fefce8;
    --purple: #7c3aed;
    --purple-bg: #f5f3ff;
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.05), 0 4px 6px -4px rgba(0, 0, 0, 0.02);
    --glass-blur: 12px;
}

[data-theme="dark"] {
    /* Premium Dark Theme */
    --bg: #09090b;
    --panel-bg: rgba(24, 24, 27, 0.6);
    --card-bg: rgba(39, 39, 42, 0.6);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border: rgba(63, 63, 70, 0.6);
    --border-strong: #52525b;
    
    --blue: #3b82f6;
    --blue-bg: rgba(37, 99, 235, 0.15);
    --green: #22c55e;
    --green-bg: rgba(22, 163, 74, 0.15);
    --red: #ef4444;
    --red-bg: rgba(220, 38, 38, 0.15);
    --yellow: #eab308;
    --yellow-bg: rgba(202, 138, 4, 0.15);
    --purple: #a855f7;
    --purple-bg: rgba(124, 58, 237, 0.15);
    
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4), 0 2px 4px -2px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
}

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

body {
    font-family: 'Inter', 'IBM Plex Sans Thai', sans-serif;
    background-color: var(--bg);
    color: var(--text-main);
    transition: background-color 0.3s ease, color 0.3s ease;
    -webkit-font-smoothing: antialiased;
    overflow: hidden; /* App-like feel */
}

.mono { font-family: 'IBM Plex Mono', monospace; }

/* Utilities */
.glass {
    background: var(--card-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
    color: inherit;
    transition: all 0.2s ease;
}

input {
    font-family: inherit;
    color: inherit;
}

/* Layout */
.app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    max-width: 1600px;
    margin: 0 auto;
}

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 24px;
    z-index: 50;
    border-bottom: 1px solid var(--border);
}

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

.logo-box {
    width: 40px; height: 40px;
    border-radius: 12px;
    background: linear-gradient(135deg, var(--blue), var(--purple));
    color: white;
    display: flex; align-items: center; justify-content: center;
    font-size: 24px;
    box-shadow: var(--shadow-md);
}

.app-header h1 { font-size: 18px; font-weight: 700; letter-spacing: -0.5px; }
.app-header .subtitle { font-size: 12px; color: var(--text-muted); }

.icon-btn {
    width: 36px; height: 36px;
    border-radius: 10px;
    display: flex; align-items: center; justify-content: center;
    font-size: 18px;
    color: var(--text-muted);
    border: 1px solid transparent;
}
.icon-btn:hover {
    background: var(--border);
    color: var(--text-main);
}

.main-layout {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Left Panel */
.panel-left {
    width: 380px;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border);
    background: var(--panel-bg);
    flex-shrink: 0;
    z-index: 10;
}

.filters-container {
    padding: 16px 16px 8px;
    border-bottom: 1px solid var(--border);
    z-index: 20;
}

.search-box {
    position: relative;
    margin-bottom: 12px;
}
.search-box i {
    position: absolute; left: 12px; top: 50%; transform: translateY(-50%);
    color: var(--text-muted);
}
.search-box input {
    width: 100%;
    padding: 10px 12px 10px 36px;
    border-radius: 10px;
    border: 1px solid var(--border-strong);
    background: var(--bg);
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}
.search-box input:focus {
    border-color: var(--blue);
    box-shadow: 0 0 0 2px var(--blue-bg);
}

.filter-tabs { display: flex; gap: 6px; margin-bottom: 12px; }
.filter-tabs .tab-btn {
    flex: 1; padding: 6px 4px; font-size: 12px; font-weight: 600;
    border-radius: 8px; border: 1px solid var(--border-strong);
    background: var(--bg); color: var(--text-muted);
}
.filter-tabs .tab-btn.active {
    background: var(--blue); color: white; border-color: var(--blue);
}
.filter-tabs .tab-btn[data-idx="NASDAQ100"].active { background: var(--purple); border-color: var(--purple); }
.filter-tabs .tab-btn[data-idx="fav"].active { background: var(--yellow); border-color: var(--yellow); }

.mover-tabs { margin-bottom: 12px; }
.mover-tabs .tab-btn { font-size: 11px; display: flex; align-items: center; gap: 4px; justify-content: center; }
.mover-tabs .tab-btn[data-mover="day_gainers"].active { background: var(--green); border-color: var(--green); }
.mover-tabs .tab-btn[data-mover="day_losers"].active { background: var(--red); border-color: var(--red); }
.mover-tabs .tab-btn[data-mover="most_actives"].active { background: var(--purple); border-color: var(--purple); }

.sector-scroll {
    display: flex; gap: 6px; overflow-x: auto; padding-bottom: 8px;
    scrollbar-width: none; /* Firefox */
}
.sector-scroll::-webkit-scrollbar { display: none; }
.sector-btn {
    white-space: nowrap; padding: 4px 12px; border-radius: 20px;
    font-size: 11px; font-weight: 500; border: 1px solid var(--border-strong);
    background: var(--bg); color: var(--text-muted);
}
.sector-btn.active { background: var(--text-main); color: var(--bg); border-color: var(--text-main); }

.stats-bar { font-size: 11px; color: var(--text-muted); padding: 4px 0; }
.stats-bar span { font-weight: 600; color: var(--text-main); }

.stock-list-container {
    flex: 1; overflow-y: auto; padding: 12px 16px;
}

/* Stock Cards */
.stock-card {
    display: flex; align-items: center; gap: 12px;
    padding: 12px; border-radius: 12px; margin-bottom: 8px;
    background: var(--card-bg); border: 1px solid var(--border);
    transition: transform 0.15s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.15s, border-color 0.15s;
    cursor: pointer; position: relative;
    border-left: 4px solid transparent;
}
.stock-card:hover {
    transform: translateY(-2px); box-shadow: var(--shadow-md);
    border-color: var(--border-strong);
}
.stock-card.active {
    border-color: var(--blue); background: var(--blue-bg);
}

/* Severity borders */
.stock-card.near { border-left-color: var(--red); }
.stock-card.close { border-left-color: var(--yellow); }

.sc-logo-wrapper { position: relative; flex-shrink: 0; }
.sc-logo {
    width: 40px; height: 40px; border-radius: 10px; object-fit: contain;
    background: #fff; padding: 2px;
}
.sc-logo-fallback {
    width: 40px; height: 40px; border-radius: 10px;
    background: linear-gradient(135deg, var(--border-strong), var(--border));
    display: flex; align-items: center; justify-content: center;
    font-weight: 700; font-size: 12px; color: var(--text-main);
}
.sc-star {
    position: absolute; top: -6px; right: -6px;
    width: 18px; height: 18px; border-radius: 50%;
    background: var(--card-bg); border: 1px solid var(--border);
    display: flex; align-items: center; justify-content: center;
    font-size: 10px; color: var(--text-muted); z-index: 2;
}
.sc-star.is-fav { color: var(--yellow); }

.sc-info { flex: 1; min-width: 0; }
.sc-top { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 2px;}
.sc-symbol { font-size: 15px; font-weight: 700; }
.sc-price { font-size: 14px; font-weight: 600; }

.sc-mid { display: flex; justify-content: space-between; align-items: center; margin-bottom: 6px; }
.sc-name { font-size: 11px; color: var(--text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 140px;}
.sc-pct { font-size: 11px; font-weight: 500; }
.sc-pct.near { color: var(--red); }
.sc-pct.close { color: var(--yellow); }
.sc-pct.ok { color: var(--green); }

.sc-bot { display: flex; gap: 4px; flex-wrap: wrap; }
.badge { font-size: 9px; font-weight: 600; padding: 2px 6px; border-radius: 4px; letter-spacing: 0.5px; }
.badge.idx-sp { background: var(--blue-bg); color: var(--blue); }
.badge.idx-nq { background: var(--purple-bg); color: var(--purple); }
.badge.idx-both { background: var(--yellow-bg); color: var(--yellow); }
.chip { font-size: 9px; padding: 2px 6px; border-radius: 4px; font-family: 'IBM Plex Mono', monospace; font-weight: 500;}
.chip.s { background: var(--red-bg); color: var(--red); }
.chip.r { background: var(--green-bg); color: var(--green); }

/* Right Panel */
.panel-right {
    flex: 1;
    background: var(--bg);
    position: relative;
    overflow: hidden;
}

.detail-empty-state {
    position: absolute; inset: 0;
    display: flex; flex-direction: column; align-items: center; justify-content: center;
    color: var(--text-muted); text-align: center; padding: 24px;
}
.empty-icon { font-size: 64px; margin-bottom: 16px; opacity: 0.5; }
.detail-empty-state h3 { font-size: 20px; font-weight: 600; color: var(--text-main); margin-bottom: 8px;}
.detail-empty-state p { font-size: 14px; max-width: 300px; line-height: 1.5; }

.detail-content {
    display: flex; flex-direction: column; height: 100%;
    animation: fadeIn 0.3s ease;
}

.detail-header {
    display: flex; align-items: center; justify-content: space-between;
    padding: 12px 24px; border-bottom: 1px solid var(--border);
    z-index: 20;
}
.mobile-back-btn { display: none; }
.stock-title-group { display: flex; align-items: center; gap: 12px; }
.stock-title-group h2 { font-size: 20px; font-weight: 700; }
.fav-btn { font-size: 20px; }
.fav-btn.is-fav { color: var(--yellow); }

.detail-scroll {
    flex: 1; overflow-y: auto; padding: 24px;
    display: flex; flex-direction: column; gap: 16px;
}

.hero-card {
    padding: 24px; border-radius: 16px; text-align: center;
}
.company-name { font-size: 16px; font-weight: 600; color: var(--text-muted); }
.sector-name { font-size: 12px; color: var(--text-muted); margin-bottom: 12px; }
.price-row { display: flex; flex-direction: column; align-items: center; gap: 4px; margin-bottom: 16px; }
.price-row h1 { font-size: 36px; font-weight: 700; letter-spacing: -1px; }
.price-change { font-size: 14px; font-weight: 500; font-family: 'IBM Plex Mono', monospace;}
.price-change.up { color: var(--green); }
.price-change.down { color: var(--red); }

.trend-badge {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 6px 16px; border-radius: 20px; font-size: 13px; font-weight: 600;
}
.trend-badge.strong-up { background: var(--green-bg); color: var(--green); border: 1px solid var(--green); }
.trend-badge.up { background: var(--green-bg); color: var(--green); }
.trend-badge.sideways { background: var(--yellow-bg); color: var(--yellow); }
.trend-badge.down { background: var(--red-bg); color: var(--red); }
.trend-badge.strong-down { background: var(--red-bg); color: var(--red); border: 1px solid var(--red); }

.ema-container {
    padding: 12px 24px; border-radius: 12px;
    display: flex; justify-content: center; gap: 12px; flex-wrap: wrap;
}
.ema-chip {
    padding: 6px 12px; border-radius: 8px; font-size: 12px; font-weight: 600; font-family: 'IBM Plex Mono', monospace;
    display: flex; align-items: center; gap: 6px;
}
.ema-chip.above { background: var(--green-bg); color: var(--green); }
.ema-chip.below { background: var(--red-bg); color: var(--red); }
.ema-chip.na { background: var(--border); color: var(--text-muted); }

.chart-card { padding: 16px; border-radius: 16px; }
.chart-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; flex-wrap: wrap; gap: 12px;}
.range-selector { display: flex; gap: 4px; background: var(--border); padding: 4px; border-radius: 10px; }
.range-btn { padding: 4px 12px; font-size: 12px; font-weight: 600; border-radius: 6px; color: var(--text-muted); }
.range-btn.active { background: var(--card-bg); color: var(--text-main); box-shadow: var(--shadow-sm); }
.range-btn.tf-4h { color: var(--purple); }
.chart-legend { display: flex; gap: 12px; font-size: 12px; align-items: center; }
.legend-item { display: flex; align-items: center; gap: 6px; }
.dot { width: 8px; height: 8px; border-radius: 50%; }
.dot.blue { background: var(--blue); }
.dot.orange { background: var(--yellow); }
.rsi-box { font-family: 'IBM Plex Mono', monospace; font-weight: 600; }

.canvas-container { position: relative; height: 350px; width: 100%; }
.chart-loader {
    position: absolute; inset: 0; background: var(--card-bg); backdrop-filter: blur(4px);
    display: flex; align-items: center; justify-content: center; border-radius: 8px;
    opacity: 0; pointer-events: none; transition: opacity 0.2s;
}
.chart-loader.active { opacity: 1; pointer-events: all; }

.chart-footer { display: flex; justify-content: space-between; align-items: center; margin-top: 12px; padding: 0 8px; }
.hint { font-size: 11px; color: var(--text-muted); display: flex; align-items: center; gap: 4px; }
.action-btn-small { font-size: 11px; padding: 4px 10px; border-radius: 6px; background: var(--border); border: 1px solid var(--border-strong); font-weight: 500;}
.action-btn-small:hover { background: var(--border-strong); }

.levels-card { padding: 20px; border-radius: 16px; }
.card-title { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.card-title h3 { font-size: 14px; font-weight: 600; display: flex; align-items: center; gap: 6px; }
.calc-time { font-size: 11px; color: var(--text-muted); }

.section-hdr { font-size: 12px; font-weight: 700; padding: 6px 12px; border-radius: 8px; margin-bottom: 8px; margin-top: 16px;}
.section-hdr:first-child { margin-top: 0; }
.section-hdr.resist { background: var(--red-bg); color: var(--red); }
.section-hdr.support { background: var(--green-bg); color: var(--green); }

.level-row { display: flex; justify-content: space-between; align-items: center; padding: 12px 16px; border-radius: 12px; margin-bottom: 8px; border: 1px solid transparent; }
.level-row.resist { background: var(--red-bg); border-color: rgba(239, 68, 68, 0.2); }
.level-row.support { background: var(--green-bg); border-color: rgba(34, 197, 94, 0.2); }
.level-row.ema { background: var(--yellow-bg); border-color: rgba(234, 179, 8, 0.2); }

.lr-left { display: flex; flex-direction: column; gap: 4px; }
.lr-label { font-size: 14px; font-weight: 700; }
.lr-label.resist { color: var(--red); }
.lr-label.support { color: var(--green); }
.lr-label.ema { color: var(--yellow); }
.lr-method { font-size: 11px; color: var(--text-muted); }

.lr-right { text-align: right; }
.lr-price { font-size: 15px; font-weight: 700; font-family: 'IBM Plex Mono', monospace;}
.lr-pct { font-size: 12px; font-family: 'IBM Plex Mono', monospace; font-weight: 600;}
.lr-pct.resist { color: var(--red); }
.lr-pct.support { color: var(--green); }
.lr-pct.ema { color: var(--yellow); }

.score-bar { display: flex; gap: 3px; margin-top: 4px; }
.sdot { width: 8px; height: 8px; border-radius: 50%; }
.sdot.on-support { background: var(--green); box-shadow: 0 0 4px var(--green); }
.sdot.on-resist { background: var(--red); box-shadow: 0 0 4px var(--red); }
.sdot.off { background: var(--border-strong); }

.price-now-badge { display: flex; align-items: center; gap: 12px; margin: 16px 0; }
.price-now-badge::before, .price-now-badge::after { content: ''; flex: 1; height: 1px; background: var(--border-strong); }
.price-now-inner { background: var(--blue); color: white; padding: 6px 16px; border-radius: 20px; font-size: 13px; font-weight: 600; font-family: 'IBM Plex Mono', monospace; box-shadow: 0 0 10px var(--blue-bg);}

.legend-card { padding: 16px 20px; border-radius: 12px; }
.legend-title { font-size: 12px; font-weight: 600; margin-bottom: 12px; display: flex; align-items: center; gap: 6px;}
.tags-container { display: flex; flex-wrap: wrap; gap: 6px; }
.tag { font-size: 10px; font-weight: 600; padding: 4px 8px; border-radius: 6px; background: var(--border); color: var(--text-main); }
.tag.purple { background: var(--purple-bg); color: var(--purple); border: 1px solid var(--purple); }

/* Loaders */
.loader-container { display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 40px; color: var(--text-muted); font-size: 14px; gap: 12px; }
.spinner { width: 32px; height: 32px; border: 3px solid var(--border-strong); border-top-color: var(--blue); border-radius: 50%; animation: spin 0.8s linear infinite; }
.spinner-small { width: 16px; height: 16px; border: 2px solid var(--border-strong); border-top-color: var(--blue); border-radius: 50%; animation: spin 0.8s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
@keyframes fadeIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* Modal */
.modal-overlay { position: fixed; inset: 0; background: rgba(0,0,0,0.5); backdrop-filter: blur(4px); display: flex; align-items: center; justify-content: center; z-index: 100; opacity: 0; pointer-events: none; transition: opacity 0.2s; }
.modal-overlay.active { opacity: 1; pointer-events: all; }
.modal { width: 90%; max-width: 400px; padding: 24px; border-radius: 16px; text-align: center; }
.modal h2 { font-size: 18px; margin-bottom: 8px; display: flex; align-items: center; justify-content: center; gap: 8px;}
.modal p { font-size: 13px; color: var(--text-muted); margin-bottom: 20px; }
.full-input { width: 100%; padding: 12px; border-radius: 8px; border: 1px solid var(--border-strong); background: var(--bg); margin-bottom: 20px; font-size: 13px; }
.modal-actions { display: flex; justify-content: center; }
.btn { padding: 10px 24px; border-radius: 8px; font-weight: 600; font-size: 14px; }
.btn.primary { background: var(--blue); color: white; }
.btn.primary:hover { opacity: 0.9; }
.help-text { font-size: 11px; margin-top: 12px; color: var(--text-muted); }

.hidden { display: none !important; }

/* Responsive Breakpoints */
@media (max-width: 1024px) {
    .panel-left { width: 320px; }
    .canvas-container { height: 300px; }
}

@media (max-width: 768px) {
    .main-layout { flex-direction: column; }
    
    .panel-left { width: 100%; height: 100%; border-right: none; }
    .panel-right { 
        position: fixed; inset: 0; z-index: 60; 
        transform: translateX(100%); transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }
    .panel-right.active { transform: translateX(0); }
    
    .mobile-back-btn { display: flex; margin-right: 12px; }
    .app-header { padding: 12px 16px; }
    .detail-header { padding: 12px 16px; }
    .detail-scroll { padding: 16px; }
    .hero-card { padding: 16px; }
    .price-row h1 { font-size: 28px; }
}