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

:root {
    --bg: #f8f9fa;
    --sidebar-bg: #1e293b;
    --sidebar-text: #cbd5e1;
    --sidebar-active: #4F46E5;
    --card-bg: #ffffff;
    --text: #1e293b;
    --text-muted: #64748b;
    --border: #e2e8f0;
    --primary: #4F46E5;
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    display: flex;
    min-height: 100vh;
}

/* Login */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1e293b 0%, #334155 100%);
}

.login-container {
    background: var(--card-bg);
    padding: 2.5rem;
    border-radius: 12px;
    width: 100%;
    max-width: 400px;
    box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.login-logos { display: flex; justify-content: center; gap: 0.75rem; margin-bottom: 1.5rem; align-items: center; }
.login-logo { height: 44px; width: auto; border-radius: 6px; }
.login-logo-divider { color: var(--text-muted); font-size: 1.25rem; font-weight: 300; }
.login-container h1 { text-align: center; margin-bottom: 0.25rem; }
.login-subtitle { text-align: center; color: var(--text-muted); margin-bottom: 1.5rem; }

.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-weight: 500; margin-bottom: 0.25rem; font-size: 0.875rem; }
.form-group input {
    width: 100%; padding: 0.625rem; border: 1px solid var(--border);
    border-radius: 6px; font-size: 0.875rem;
}
.form-group input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(79,70,229,0.1); }

/* Alerts */
.alert { padding: 0.75rem; border-radius: 6px; margin-bottom: 1rem; font-size: 0.875rem; }
.alert-error { background: #fef2f2; color: #991b1b; border: 1px solid #fecaca; }

/* Buttons */
.btn {
    display: inline-block; padding: 0.5rem 1rem; border-radius: 6px;
    font-size: 0.875rem; font-weight: 500; cursor: pointer; border: 1px solid var(--border);
    background: var(--card-bg); color: var(--text); transition: all 0.15s;
}
.btn:hover { background: var(--bg); }
.btn-primary { background: var(--primary); color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: #4338ca; }
.btn-google { background: #fff; color: #3c4043; border: 1px solid #dadce0; font-size: 0.9rem; padding: 0.625rem 1rem; display: flex; align-items: center; justify-content: center; text-decoration: none; }
.btn-google:hover { background: #f7f8f8; box-shadow: 0 1px 3px rgba(0,0,0,0.1); }
.login-note { text-align: center; font-size: 0.75rem; color: var(--text-muted); margin-top: 1rem; }
.btn-full { width: 100%; text-align: center; }
.btn-sm { padding: 0.25rem 0.5rem; font-size: 0.75rem; }

/* Sidebar */
.sidebar {
    width: 240px; min-height: 100vh; background: var(--sidebar-bg);
    color: var(--sidebar-text); padding: 1.5rem 0; display: flex;
    flex-direction: column; position: fixed; left: 0; top: 0;
}

.sidebar-header { padding: 0 1.25rem 1.5rem; border-bottom: 1px solid rgba(255,255,255,0.1); }
.brand-logos { display: flex; flex-direction: column; gap: 0.5rem; margin-bottom: 0.75rem; padding: 0 0.5rem; }
.sidebar-logo { max-width: 100%; height: auto; max-height: 36px; object-fit: contain; }
.sidebar-logo-dark { filter: brightness(0) invert(1); }
.sidebar-header h2 { color: #fff; font-size: 1.25rem; }
.sidebar-header .subtitle { font-size: 0.75rem; color: var(--sidebar-text); }

.nav-links { list-style: none; padding: 1rem 0; flex: 1; }
.nav-links li a {
    display: block; padding: 0.625rem 1.25rem; color: var(--sidebar-text);
    text-decoration: none; font-size: 0.875rem; transition: all 0.15s;
}
.nav-links li a:hover { background: rgba(255,255,255,0.05); color: #fff; }
.nav-links li.active a { background: var(--sidebar-active); color: #fff; border-radius: 0; }

.sidebar-footer {
    padding: 1rem 1.25rem; border-top: 1px solid rgba(255,255,255,0.1);
    display: flex; justify-content: space-between; font-size: 0.8rem;
}
.logout-link { color: var(--sidebar-text); text-decoration: none; }
.logout-link:hover { color: #fff; }

/* Main Content */
.content {
    margin-left: 240px; padding: 2rem; width: calc(100% - 240px);
}

/* Page Header */
.page-header { margin-bottom: 1.5rem; }
.page-header h1 { font-size: 1.5rem; margin-bottom: 0.75rem; }
.page-description { color: var(--text-muted); margin-bottom: 0.75rem; font-size: 0.875rem; }

.date-controls {
    display: flex; gap: 0.75rem; align-items: center; flex-wrap: wrap;
}
.date-controls label, .date-controls select {
    font-size: 0.8rem; color: var(--text-muted);
}
.date-controls input, .date-controls select {
    padding: 0.375rem 0.5rem; border: 1px solid var(--border);
    border-radius: 4px; font-size: 0.8rem;
}

.brand-filters { display: flex; gap: 0.75rem; }
.brand-toggle { display: flex; align-items: center; gap: 0.25rem; font-size: 0.8rem; cursor: pointer; }

/* Cards */
.metric-cards {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: 1rem; margin-bottom: 1.5rem;
}

.card, .card-full {
    background: var(--card-bg); border-radius: 8px; padding: 1.25rem;
    border: 1px solid var(--border);
}
.card-full { margin-bottom: 1.5rem; }

.metric-card { text-align: center; }
.metric-label { font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.05em; }
.metric-value { font-size: 1.5rem; font-weight: 700; margin-top: 0.25rem; }

.card-full h3 { font-size: 1rem; margin-bottom: 1rem; }

/* Chart Grid */
.chart-grid {
    display: grid; grid-template-columns: 1fr; gap: 1.5rem; margin-bottom: 1.5rem;
}
.chart-row {
    display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem;
}
@media (max-width: 768px) {
    .chart-row { grid-template-columns: 1fr; }
}

/* Filter controls */
.filter-group { display: flex; gap: 0.75rem; align-items: center; flex-wrap: wrap; }
.filter-label { font-size: 0.8rem; font-weight: 600; color: var(--text-muted); }
.filter-badge { font-size: 0.65rem; padding: 0.1rem 0.35rem; border-radius: 8px; vertical-align: middle; }

/* Tables */
.table-container { overflow-x: auto; }
.data-table {
    width: 100%; border-collapse: collapse; font-size: 0.8rem;
}
.data-table th {
    text-align: left; padding: 0.625rem 0.75rem; border-bottom: 2px solid var(--border);
    font-weight: 600; color: var(--text-muted); font-size: 0.75rem;
    text-transform: uppercase; letter-spacing: 0.03em; white-space: nowrap;
}
.data-table td {
    padding: 0.5rem 0.75rem; border-bottom: 1px solid var(--border);
}
.data-table tbody tr:hover { background: #f1f5f9; }

.reason-cell { max-width: 300px; font-size: 0.75rem; color: var(--text-muted); }

/* Status Badges */
.status-badge {
    display: inline-block; padding: 0.125rem 0.5rem; border-radius: 12px;
    font-size: 0.7rem; font-weight: 600; text-transform: uppercase;
    background: #e2e8f0; color: #475569;
}
.status-enabled { background: #d1fae5; color: #065f46; }
.status-paused { background: #fef3c7; color: #92400e; }
.type-increase { background: #d1fae5; color: #065f46; }
.type-decrease { background: #fef2f2; color: #991b1b; }
.type-other { background: #e0e7ff; color: #3730a3; }
.source-google { background: #e8f0fe; color: #1a73e8; }
.source-bing { background: #e6f7f2; color: #00857c; }
.roas-higher { color: #065f46; font-weight: 600; }
.roas-lower { color: #991b1b; font-weight: 600; }

/* Pagination */
.pagination { display: flex; gap: 0.25rem; margin-top: 1rem; }

/* Actions */
.actions { white-space: nowrap; }
.actions .btn { margin-right: 0.25rem; }

/* Loading */
.loading { color: var(--text-muted); padding: 2rem; text-align: center; }
.error { color: var(--danger); padding: 1rem; }

/* Responsive */
@media (max-width: 768px) {
    .sidebar { display: none; }
    .content { margin-left: 0; width: 100%; }
}