/* ===== RESET & BASE ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --primary:    #2563eb;
    --primary-dk: #1d4ed8;
    --success:    #10b981;
    --warning:    #f59e0b;
    --danger:     #ef4444;
    --bg:         #f1f5f9;
    --surface:    #ffffff;
    --border:     #e2e8f0;
    --text:       #1e293b;
    --text-muted: #64748b;
    --radius:     10px;
    --shadow:     0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.06);
    --shadow-lg:  0 10px 25px rgba(0,0,0,.12);
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.5;
}

/* ===== NAVBAR ===== */
.navbar {
    background: var(--primary);
    color: #fff;
    display: flex;
    align-items: center;
    gap: 32px;
    padding: 0 24px;
    height: 54px;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 8px rgba(37,99,235,.4);
}

.nav-brand {
    font-size: 18px;
    font-weight: 700;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-icon { font-size: 22px; }

.nav-links {
    list-style: none;
    display: flex;
    gap: 4px;
    flex: 1;
}

.nav-links a {
    color: rgba(255,255,255,.8);
    text-decoration: none;
    padding: 6px 14px;
    border-radius: 6px;
    font-size: 13px;
    font-weight: 500;
    transition: background .15s, color .15s;
}

.nav-links a:hover, .nav-links a.active {
    background: rgba(255,255,255,.15);
    color: #fff;
}

/* ===== CONTAINER ===== */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 24px 20px 48px;
}

/* ===== PAGE HEADER ===== */
.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    gap: 12px;
    flex-wrap: wrap;
}

.page-header h1 {
    font-size: 22px;
    font-weight: 700;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
}

.link-back {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 400;
    font-size: 18px;
}
.link-back:hover { color: var(--primary); }

/* ===== CARDS ===== */
.card {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    margin-bottom: 20px;
    overflow: hidden;
}

.card-header {
    padding: 14px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: #fafbfc;
}

.card-header h2 {
    font-size: 15px;
    font-weight: 600;
}

.card-body {
    padding: 20px;
}

.card-actions { display: flex; gap: 8px; align-items: center; }

/* ===== STATS ===== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 14px;
    margin-bottom: 20px;
}

.stat-card {
    background: var(--surface);
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    padding: 18px 16px;
    text-align: center;
    transition: transform .15s;
}
.stat-card:hover { transform: translateY(-2px); }

.stat-icon { font-size: 28px; margin-bottom: 6px; }
.stat-value { font-size: 22px; font-weight: 700; color: var(--primary); }
.stat-label { font-size: 12px; color: var(--text-muted); margin-top: 2px; }

.stat-winning { border-color: var(--success); }
.stat-winning .stat-value { color: var(--success); }
.stat-losing  { border-color: var(--warning); }
.stat-losing  .stat-value { color: var(--warning); }

/* ===== PRICE CELLS ===== */
.price-cell { white-space: nowrap; font-weight: 600; }
.price-low  { color: var(--success); }
.price-avg  { color: var(--primary); }
.price-high { color: var(--danger); }

.price-diff { font-size: 11px; display: block; margin-top: 2px; font-weight: 400; }
.diff-positive { color: var(--success); }
.diff-negative { color: var(--danger); }

.diff-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 700;
}
.diff-neg { background: #dcfce7; color: #166534; }
.diff-pos { background: #fee2e2; color: #991b1b; }

/* ===== TABLES ===== */
.table-wrap { overflow-x: auto; }

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: 13px;
}

.table th {
    padding: 10px 14px;
    text-align: left;
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .5px;
    color: var(--text-muted);
    background: #f8fafc;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

.table th.sortable { cursor: pointer; user-select: none; }
.table th.sortable:hover { background: #f1f5f9; color: var(--primary); }

.table td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

.table tbody tr:last-child td { border-bottom: none; }
.table tbody tr:hover td { background: #f8fafc; }

.row-cheap td { background: #f0fdf4 !important; }
.row-expensive td { background: #fff7ed !important; }
.row-inactive td { opacity: .5; }

.text-muted { color: var(--text-muted); }

/* ===== BADGES ===== */
.badge {
    display: inline-block;
    padding: 2px 9px;
    border-radius: 12px;
    font-size: 11px;
    font-weight: 600;
}
.badge-ok   { background: #dcfce7; color: #166534; }
.badge-warn { background: #fef9c3; color: #713f12; }
.badge-error{ background: #fee2e2; color: #991b1b; }

.rating {
    background: var(--primary);
    color: #fff;
    padding: 2px 8px;
    border-radius: 6px;
    font-weight: 700;
    font-size: 12px;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 8px 16px;
    border-radius: 7px;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    border: none;
    text-decoration: none;
    transition: background .15s, transform .1s, box-shadow .15s;
    white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); }
.btn:active { transform: translateY(0); }

.btn-primary   { background: var(--primary);  color: #fff; }
.btn-primary:hover { background: var(--primary-dk); box-shadow: 0 4px 12px rgba(37,99,235,.3); }

.btn-secondary { background: #e2e8f0; color: var(--text); }
.btn-secondary:hover { background: #cbd5e1; }

.btn-ghost { background: transparent; color: var(--text-muted); border: 1px solid var(--border); }
.btn-ghost:hover { background: var(--bg); color: var(--text); }

.btn-danger { background: #fee2e2; color: var(--danger); }
.btn-danger:hover { background: var(--danger); color: #fff; }

.btn-sm { padding: 5px 11px; font-size: 12px; }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }

.actions { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }

/* ===== FORMS ===== */
.form-grid { display: flex; flex-direction: column; gap: 14px; }

.form-group { display: flex; flex-direction: column; gap: 4px; }
.form-group label { font-size: 12px; font-weight: 600; color: var(--text-muted); text-transform: uppercase; letter-spacing: .4px; }
.form-group small { font-size: 11px; color: var(--text-muted); }

.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 12px; }

.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="date"],
.form-group select,
.form-group textarea {
    padding: 9px 12px;
    border: 1px solid var(--border);
    border-radius: 7px;
    font-size: 13px;
    color: var(--text);
    background: var(--surface);
    transition: border-color .15s, box-shadow .15s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(37,99,235,.12);
}

.form-checkbox { flex-direction: row; align-items: center; gap: 8px; }
.form-checkbox label { text-transform: none; font-size: 13px; font-weight: 500; color: var(--text); display: flex; align-items: center; gap: 8px; cursor: pointer; }
.form-checkbox input[type="checkbox"] { width: 15px; height: 15px; cursor: pointer; }

.form-actions { display: flex; gap: 10px; margin-top: 4px; }

.form-inline {
    display: flex;
    gap: 10px;
    align-items: center;
    flex-wrap: wrap;
}
.form-inline input, .form-inline select {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 7px;
    font-size: 13px;
}

/* ===== ALERTS ===== */
.alert {
    padding: 12px 16px;
    border-radius: var(--radius);
    margin-bottom: 16px;
    font-size: 13px;
    font-weight: 500;
    border-left: 4px solid;
}
.alert-success { background: #f0fdf4; border-color: var(--success); color: #166534; }
.alert-error   { background: #fff0f0; border-color: var(--danger);  color: #991b1b; }
.alert-info    { background: #eff6ff; border-color: var(--primary); color: #1e40af; }

/* ===== ADVICE BOX ===== */
.advice-box {
    padding: 14px 18px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    font-size: 13px;
    border-left: 4px solid var(--primary);
    background: #eff6ff;
    color: #1e40af;
}
.advice-good { border-color: var(--success); background: #f0fdf4; color: #166534; }

/* ===== SNAPSHOT BAR ===== */
.snapshot-bar {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
    font-size: 13px;
    color: var(--text-muted);
}
.snapshot-bar select {
    padding: 6px 10px;
    border: 1px solid var(--border);
    border-radius: 7px;
    font-size: 13px;
    flex: 1;
    max-width: 500px;
}

/* ===== FILTER INPUT ===== */
.filter-input {
    padding: 6px 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 12px;
    width: 180px;
}

/* ===== MODAL ===== */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.5);
    z-index: 999;
    display: flex !important;
    align-items: center;
    justify-content: center;
}
.modal[style*="display:none"] { display: none !important; }

.modal-box {
    background: var(--surface);
    border-radius: 14px;
    padding: 28px 32px;
    max-width: 540px;
    width: 90%;
    box-shadow: var(--shadow-lg);
}

.modal-box h3 { font-size: 17px; margin-bottom: 16px; }

.progress-bar {
    height: 8px;
    background: var(--border);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 16px;
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: var(--primary);
    border-radius: 4px;
    transition: width .5s ease;
    animation: progressAnim 2s infinite;
}

@keyframes progressAnim {
    0%   { width: 20%; }
    50%  { width: 80%; }
    100% { width: 20%; }
}

.progress-fill.done { animation: none; width: 100%; background: var(--success); }

.scrape-log {
    max-height: 200px;
    overflow-y: auto;
    background: #0f172a;
    color: #94a3b8;
    border-radius: 8px;
    padding: 12px;
    font-family: 'Consolas', monospace;
    font-size: 12px;
    line-height: 1.7;
}

.scrape-log .log-success { color: #4ade80; }
.scrape-log .log-error   { color: #f87171; }

/* ===== TWO-COL LAYOUT ===== */
.two-col {
    display: grid;
    grid-template-columns: 360px 1fr;
    gap: 20px;
    align-items: start;
}

@media (max-width: 768px) {
    .two-col { grid-template-columns: 1fr; }
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .navbar { gap: 16px; }
    .nav-links { gap: 0; }
    .nav-links a { padding: 6px 8px; font-size: 12px; }
    .page-header { flex-direction: column; align-items: flex-start; }
}

/* ===== EMPTY STATE ===== */
.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--text-muted);
}
.empty-state p { margin-bottom: 16px; font-size: 15px; }

/* ===== FOOTER ===== */
.footer {
    text-align: center;
    padding: 20px;
    color: var(--text-muted);
    font-size: 12px;
    border-top: 1px solid var(--border);
    margin-top: 32px;
}