/* ─── CSS Variables ─────────────────────────────────────────────────────── */
:root {
    --accent:          #5b21b6;
    --accent-light:    #7c3aed;
    --accent-dark:     #4c1d95;
    --accent-subtle:   rgba(91, 33, 182, 0.08);
    --accent-glow:     rgba(91, 33, 182, 0.25);

    --bg:              #f4f5f7;
    --sidebar-bg:      #1e1230;
    --sidebar-hover:   rgba(255,255,255,0.07);
    --sidebar-active:  rgba(255,255,255,0.12);
    --sidebar-border:  rgba(255,255,255,0.08);
    --sidebar-text:    rgba(255,255,255,0.65);
    --sidebar-text-active: #ffffff;

    --surface:         #ffffff;
    --surface-2:       #f8f9fb;
    --border:          #e8eaed;
    --border-subtle:   #f0f0f0;

    --text-primary:    #111827;
    --text-secondary:  #6b7280;
    --text-muted:      #9ca3af;

    --green:           #059669;
    --red:             #dc2626;
    --blue:            #2563eb;
    --orange:          #d97706;
    --purple:          #7c3aed;

    --radius:          10px;
    --radius-sm:       6px;
    --shadow-sm:       0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow:          0 4px 12px rgba(0,0,0,0.08);
    --shadow-lg:       0 8px 24px rgba(0,0,0,0.10);

    --sidebar-w:       220px;
    --topbar-h:        64px;
}

[data-theme="dark"] {
    --bg:              #0f0a1a;
    --surface:         #1a1228;
    --surface-2:       #221833;
    --border:          #2d2040;
    --border-subtle:   #251b38;

    --text-primary:    #f1f0f4;
    --text-secondary:  #a09ab8;
    --text-muted:      #6b6485;

    --sidebar-bg:      #0d0818;
    --sidebar-hover:   rgba(255,255,255,0.05);
    --sidebar-active:  rgba(124,58,237,0.25);
    --sidebar-border:  rgba(255,255,255,0.06);

    --shadow-sm:       0 1px 3px rgba(0,0,0,0.3);
    --shadow:          0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg:       0 8px 24px rgba(0,0,0,0.5);

    color-scheme: dark;
}

[data-theme="dark"] .date-input,
[data-theme="dark"] .campaign-select,
[data-theme="dark"] .timezone-select {
    background: var(--surface-2);
    color: var(--text-primary);
    border-color: var(--border);
    color-scheme: dark;
}

[data-theme="dark"] .campaign-select option,
[data-theme="dark"] .timezone-select option {
    background: #221833;
    color: #f1f0f4;
}

/* ─── Dark mode table rows ───────────────────────────────────────────────── */
[data-theme="dark"] tbody tr { background: var(--surface); }
[data-theme="dark"] tbody tr:hover { background: var(--accent-subtle); }
[data-theme="dark"] .adgroup-row,
[data-theme="dark"] .offer-row,
[data-theme="dark"] .uw-row { background: var(--surface) !important; }
[data-theme="dark"] .adgroup-row:hover,
[data-theme="dark"] .offer-row:hover,
[data-theme="dark"] .uw-row:hover { background: var(--accent-subtle) !important; }
[data-theme="dark"] .group-totals-row,
[data-theme="dark"] .day-totals-row,
[data-theme="dark"] .site-totals-row,
[data-theme="dark"] .uw-group-header { background: var(--surface-2) !important; }
[data-theme="dark"] .totals-row { background: rgba(124,58,237,0.12) !important; }
[data-theme="dark"] .airfind-row,
[data-theme="dark"] .redirect-row { background: rgba(5,150,105,0.08) !important; }
[data-theme="dark"] .table-container { background: var(--surface); }

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

html { height: 100%; }

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text-primary);
    line-height: 1.5;
    height: 100%;
    overflow: hidden;
}

/* ─── App Layout ─────────────────────────────────────────────────────────── */
.app-layout {
    display: flex;
    height: 100vh;
    overflow: hidden;
}

/* ─── Sidebar ────────────────────────────────────────────────────────────── */
.sidebar {
    width: var(--sidebar-w);
    min-width: var(--sidebar-w);
    background: var(--sidebar-bg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    z-index: 100;
}

.sidebar-logo {
    padding: 20px 20px 16px;
    border-bottom: 1px solid var(--sidebar-border);
    flex-shrink: 0;
}

.sidebar-logo-inner {
    display: flex;
    align-items: center;
    gap: 10px;
}

.sidebar-logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--accent-light), var(--accent-dark));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 16px;
    flex-shrink: 0;
}

.sidebar-logo-text {
    font-size: 15px;
    font-weight: 700;
    color: #ffffff;
    letter-spacing: -0.3px;
}

.sidebar-logo-sub {
    font-size: 11px;
    color: var(--sidebar-text);
    margin-top: 1px;
}

/* Nav */
.sidebar-nav {
    flex: 1;
    padding: 12px 10px;
    overflow-y: auto;
    overflow-x: hidden;
}

.sidebar-nav::-webkit-scrollbar { width: 4px; }
.sidebar-nav::-webkit-scrollbar-track { background: transparent; }
.sidebar-nav::-webkit-scrollbar-thumb { background: var(--sidebar-border); border-radius: 2px; }

.nav-section-label {
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--sidebar-text);
    padding: 8px 10px 4px;
    opacity: 0.6;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 10px;
    border-radius: var(--radius-sm);
    text-decoration: none;
    color: var(--sidebar-text);
    font-size: 13.5px;
    font-weight: 500;
    transition: background 0.15s, color 0.15s;
    white-space: nowrap;
    margin-bottom: 1px;
}

.nav-link:hover {
    background: var(--sidebar-hover);
    color: var(--sidebar-text-active);
}

.nav-link.active {
    background: var(--sidebar-active);
    color: var(--sidebar-text-active);
}

.nav-link.active .nav-icon {
    opacity: 1;
}

.nav-icon {
    font-size: 15px;
    width: 20px;
    text-align: center;
    flex-shrink: 0;
    opacity: 0.7;
}

/* Sidebar footer */
.sidebar-footer {
    padding: 14px 10px;
    border-top: 1px solid var(--sidebar-border);
    flex-shrink: 0;
}

.dark-mode-toggle {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 10px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    color: var(--sidebar-text);
    font-size: 13px;
    font-weight: 500;
    transition: background 0.15s, color 0.15s;
    user-select: none;
    border: none;
    background: transparent;
    width: 100%;
    text-align: left;
}

.dark-mode-toggle:hover {
    background: var(--sidebar-hover);
    color: var(--sidebar-text-active);
}

.toggle-track {
    width: 32px;
    height: 18px;
    background: rgba(255,255,255,0.15);
    border-radius: 9px;
    position: relative;
    transition: background 0.2s;
    flex-shrink: 0;
    margin-left: auto;
}

.toggle-thumb {
    width: 14px;
    height: 14px;
    background: #ffffff;
    border-radius: 50%;
    position: absolute;
    top: 2px;
    left: 2px;
    transition: transform 0.2s;
}

[data-theme="dark"] .toggle-track {
    background: var(--accent-light);
}

[data-theme="dark"] .toggle-thumb {
    transform: translateX(14px);
}

/* ─── Main Content ───────────────────────────────────────────────────────── */
.main-content {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
}

/* Topbar */
.topbar {
    height: var(--topbar-h);
    min-height: var(--topbar-h);
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 28px;
    gap: 12px;
    flex-shrink: 0;
}

.topbar-title {
    font-size: 18px;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.3px;
}

.topbar-sub {
    font-size: 13px;
    color: var(--text-muted);
    margin-left: 4px;
}

/* Page scroll area */
.page-body {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    padding: 24px 28px;
}

.page-body::-webkit-scrollbar { width: 6px; }
.page-body::-webkit-scrollbar-track { background: transparent; }
.page-body::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ─── Controls ───────────────────────────────────────────────────────────── */
.controls {
    background: var(--surface);
    padding: 20px 24px;
    border-radius: var(--radius);
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
}

.controls-row {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    align-items: center;
    margin-bottom: 14px;
}

.controls-row:last-child { margin-bottom: 0; }

.controls-label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    min-width: 72px;
}

/* Preset Buttons */
.preset-btn {
    padding: 7px 14px;
    border: 1px solid var(--border);
    background: var(--surface);
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.15s;
}

.preset-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-subtle);
}

.preset-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: #ffffff;
}

/* Date Inputs */
.date-input {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-primary);
    background: var(--surface);
    transition: border-color 0.15s;
}

.date-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.date-separator { color: var(--text-muted); font-size: 13px; }

/* Selects */
.campaign-select,
.timezone-select {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: var(--text-primary);
    background: var(--surface);
    min-width: 180px;
    cursor: pointer;
    transition: border-color 0.15s;
}

.campaign-select:focus,
.timezone-select:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.campaign-select:hover,
.timezone-select:hover { border-color: var(--accent); }

/* Fetch Button */
.fetch-btn {
    padding: 9px 22px;
    background: #2563eb;
    border: none;
    border-radius: var(--radius-sm);
    color: #ffffff;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.15s, box-shadow 0.15s, transform 0.1s;
    margin-left: auto;
}

.fetch-btn:hover {
    background: #3b82f6;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.25);
    transform: translateY(-1px);
}

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

.fetch-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* Export Button */
.export-btn {
    padding: 9px 22px;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s;
}

.export-btn:hover {
    border-color: var(--green);
    color: var(--green);
    background: rgba(5,150,105,0.06);
}

.export-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ─── Table Container ────────────────────────────────────────────────────── */
.table-container {
    background: var(--surface);
    border-radius: var(--radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    overflow: hidden;
}

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

.table-header h2 {
    font-size: 14px;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.4px;
}

.record-count {
    font-size: 12px;
    color: var(--text-muted);
    background: var(--surface-2);
    padding: 3px 10px;
    border-radius: 20px;
    border: 1px solid var(--border);
}

/* Table scroll */
.table-scroll {
    overflow-x: auto;
    overflow-y: auto;
    max-height: calc(100vh - 340px);
}

.table-scroll::-webkit-scrollbar { height: 5px; width: 5px; }
.table-scroll::-webkit-scrollbar-track { background: transparent; }
.table-scroll::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

table {
    width: 100%;
    border-collapse: collapse;
}

thead {
    background: var(--surface-2);
    position: sticky;
    top: 0;
    z-index: 10;
}

th {
    padding: 11px 18px;
    text-align: left;
    font-weight: 600;
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.6px;
    border-bottom: 1px solid var(--border);
    background: var(--surface-2);
    white-space: nowrap;
}

td {
    padding: 13px 18px;
    border-bottom: 1px solid var(--border-subtle);
    font-size: 13px;
    color: var(--text-primary);
}

tbody tr:hover { background: var(--accent-subtle); }
tbody tr:last-child td { border-bottom: none; }

/* ─── Metric Colors ──────────────────────────────────────────────────────── */
.spend   { font-weight: 600; color: var(--green); }
.revenue { font-weight: 600; color: var(--green); }
.cpa     { font-weight: 600; color: var(--purple); }
.conv-rate { font-weight: 600; color: var(--blue); }
.roas    { font-weight: 600; color: var(--orange); }
.profit-positive { color: var(--green); font-weight: 600; }
.profit-negative { color: var(--red);   font-weight: 600; }

/* ─── Special Rows ───────────────────────────────────────────────────────── */
.totals-row {
    background: var(--accent-subtle) !important;
    font-weight: 600;
}

.totals-row td {
    border-top: 1px solid var(--accent);
    color: var(--text-primary);
}

.uw-group-header {
    background: var(--surface-2) !important;
    font-weight: 600;
}

.uw-group-header td {
    border-top: 1px solid var(--border);
    color: var(--text-primary);
}

.adgroup-row { background: var(--surface); }

.airfind-row { background: rgba(5,150,105,0.04) !important; }

.group-totals-row {
    background: var(--surface-2) !important;
    font-weight: 600;
}

/* Rewarded Web specific */
.site-header-row { background: #1e1230 !important; }
.site-header-row td { color: #ffffff !important; font-weight: 700; padding: 11px 18px; font-size: 12px; letter-spacing: 0.3px; }
[data-theme="dark"] .site-header-row { background: #0d0818 !important; }

.offer-row { background: var(--surface); }
.redirect-row { background: rgba(5,150,105,0.04) !important; }
.redirect-row td { color: var(--green); }
.uncat-row { background: rgba(234,179,8,0.06) !important; }
.uncat-row td { color: #92400e; }
[data-theme="dark"] .uncat-row { background: rgba(234,179,8,0.08) !important; }
[data-theme="dark"] .uncat-row td { color: #fbbf24; }
.site-totals-row { background: var(--surface-2) !important; font-weight: 600; }
.site-totals-row td { border-bottom: 2px solid var(--accent); }
.site-error-row td { color: var(--red); font-style: italic; }

/* Daily UW */
.date-header-row { background: #1e1230 !important; }
.date-header-row td { color: #fff !important; font-weight: 700; padding: 11px 18px; }
[data-theme="dark"] .date-header-row { background: #0d0818 !important; }
.uw-row { background: var(--surface); }
.uw-row:hover { background: var(--accent-subtle); }
.day-totals-row { background: var(--surface-2) !important; font-weight: 600; }
.day-totals-row td { border-bottom: 2px solid var(--accent); }

/* ─── Loading / Empty / Error States ────────────────────────────────────── */
.loading {
    display: none;
    text-align: center;
    padding: 56px 20px;
    color: var(--text-muted);
}

.loading.show { display: block; }

.spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin: 0 auto 14px;
}

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

.empty-state {
    text-align: center;
    padding: 56px 20px;
    color: var(--text-muted);
}

.empty-state-icon { font-size: 40px; margin-bottom: 12px; }

.error-state {
    display: none;
    text-align: center;
    padding: 36px 20px;
    color: var(--red);
    background: rgba(220,38,38,0.05);
    border-radius: var(--radius-sm);
    margin: 16px;
    border: 1px solid rgba(220,38,38,0.15);
}

.error-state.show { display: block; }

/* ─── Rev Share Note ─────────────────────────────────────────────────────── */
.rev-share-note {
    margin-top: 14px;
    padding: 10px 16px;
    background: var(--surface);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 12px;
}

/* ─── Drop Zone (RevU) ───────────────────────────────────────────────────── */
#drop-zone {
    border: 2px dashed var(--border);
    border-radius: var(--radius);
    padding: 48px 40px;
    text-align: center;
    color: var(--text-muted);
    font-size: 16px;
    margin-bottom: 20px;
    transition: all 0.2s ease;
    background: var(--surface);
    cursor: pointer;
}

#drop-zone.dragover {
    background: var(--accent-subtle);
    border-color: var(--accent);
    color: var(--text-primary);
}

#drop-zone strong { color: var(--accent); }

/* RevU V2 total card */
.total-cost-container {
    background: var(--accent-subtle);
    border-left: 4px solid var(--accent);
    padding: 14px 20px;
    margin-bottom: 20px;
    border-radius: var(--radius-sm);
    text-align: center;
}

.total-cost-container h2 {
    margin: 0;
    font-size: 26px;
    color: var(--accent);
    font-weight: 700;
}

.total-cost-container p { margin: 4px 0 0; color: var(--text-secondary); font-size: 13px; }

/* ─── Mobile hamburger button (hidden on desktop) ────────────────────────── */
.menu-btn {
    display: none;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    cursor: pointer;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    flex-shrink: 0;
    transition: background 0.15s, color 0.15s;
    padding: 0;
}
.menu-btn:hover { background: var(--surface-2); color: var(--text-primary); }
.menu-btn svg { display: block; }

/* Sidebar overlay backdrop */
.sidebar-backdrop {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.45);
    z-index: 99;
}
.sidebar-backdrop.open { display: block; }

/* ─── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
    /* Allow scrolling on mobile */
    html, body { height: auto; overflow: auto; }
    .app-layout { height: auto; overflow: visible; min-height: 100vh; }
    .main-content { overflow: visible; }
    .page-body { overflow: visible; }

    /* Sidebar becomes a slide-in overlay */
    .sidebar {
        position: fixed;
        inset: 0 auto 0 0;
        transform: translateX(-100%);
        transition: transform 0.25s ease;
        z-index: 200;
        width: 260px;
        min-width: 260px;
    }
    .sidebar.open { transform: translateX(0); }

    /* Topbar stays sticky at top */
    .topbar {
        position: sticky;
        top: 0;
        z-index: 50;
    }

    /* Show hamburger in topbar */
    .menu-btn { display: flex; }

    /* Main content fills full width */
    .main-content { width: 100%; }

    .topbar {
        padding: 0 16px;
        gap: 10px;
    }
    .topbar-title { font-size: 16px; }

    .page-body { padding: 14px 12px; }

    /* Controls stack vertically */
    .controls { padding: 14px 12px; gap: 10px; }
    .controls-row {
        flex-direction: column;
        align-items: stretch;
        gap: 8px;
    }
    .date-preset-row { flex-wrap: wrap; gap: 6px; }
    .preset-btn { font-size: 11px; padding: 5px 9px; }
    .fetch-btn, .export-btn {
        width: 100%;
        margin-left: 0;
        justify-content: center;
    }
    .date-input, .campaign-select, .timezone-select {
        width: 100%;
        box-sizing: border-box;
    }

    /* Table: horizontal scroll only, no shrinking */
    .table-container { border-radius: var(--radius-sm); }
    .table-scroll { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    .table-scroll table { min-width: 560px; }
    th, td { padding: 9px 12px; font-size: 12px; white-space: nowrap; }

    /* Cards / stat rows */
    .stats-row { flex-direction: column; gap: 10px; }
    .stat-card { min-width: 0; }

    /* Comparison layout (search.php) */
    .comparison-container { flex-direction: column; }

    /* RevU drop zone */
    #drop-zone { padding: 24px 12px; }
}