:root {
    --bg-main: #0b0f19;
    --bg-secondary: #111827;
    --bg-card: rgba(17, 24, 39, 0.75);
    --border-card: rgba(255, 255, 255, 0.08);
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --accent-emerald: #10b981;
    --accent-indigo: #6366f1;
    --accent-blue: #3b82f6;
    --accent-purple: #8b5cf6;
    --accent-amber: #f59e0b;
    --accent-rose: #f43f5e;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --shadow-glass: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

body.light-theme {
    --bg-main: #f3f4f6;
    --bg-secondary: #ffffff;
    --bg-card: rgba(255, 255, 255, 0.85);
    --border-card: rgba(0, 0, 0, 0.08);
    --text-primary: #111827;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    --shadow-glass: 0 8px 30px 0 rgba(0, 0, 0, 0.08);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

.app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.sidebar {
    width: 280px;
    background-color: var(--bg-secondary);
    border-right: 1px solid var(--border-card);
    display: flex;
    flex-direction: column;
    padding: 1.5rem 1rem;
    position: fixed;
    height: 100vh;
    z-index: 100;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 1.75rem;
    padding: 0 0.5rem;
}

.brand-img-logo {
    width: 48px;
    height: 48px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 14px rgba(136, 19, 55, 0.5);
    border: 1.5px solid rgba(255, 255, 255, 0.2);
}

.header-title-wrapper {
    display: flex;
    align-items: center;
    gap: 1.1rem;
}

.header-img-logo {
    width: 54px;
    height: 54px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 16px rgba(136, 19, 55, 0.5);
    border: 1.5px solid rgba(255, 255, 255, 0.2);
}

.brand-text h2 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.4rem;
    letter-spacing: 1px;
}

.brand-text span {
    font-size: 0.65rem;
    color: var(--accent-emerald);
    font-weight: 700;
    letter-spacing: 1.5px;
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.75rem 0.85rem;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 0.88rem;
    font-weight: 500;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
}

.nav-item:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.nav-item.active {
    background: linear-gradient(90deg, rgba(99, 102, 241, 0.2), transparent);
    color: var(--accent-indigo);
    border-left: 3px solid var(--accent-indigo);
}

.sidebar-footer {
    padding-top: 1rem;
    border-top: 1px solid var(--border-card);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    font-size: 0.8rem;
}

.api-status {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--accent-emerald);
    box-shadow: 0 0 10px var(--accent-emerald);
}

.store-info code {
    background: rgba(255, 255, 255, 0.1);
    padding: 2px 6px;
    border-radius: 4px;
}

/* Main Content */
.main-content {
    margin-left: 280px;
    flex: 1;
    padding: 2rem;
    max-width: calc(100vw - 280px);
}

/* Header Toolbar */
.top-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.header-title h1 {
    font-size: 1.75rem;
    font-weight: 700;
    font-family: 'Outfit', sans-serif;
}

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

.header-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex-wrap: wrap;
}

/* Buttons & Controls */
.period-buttons {
    display: flex;
    background-color: var(--bg-secondary);
    padding: 4px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-card);
}

.period-btn {
    background: transparent;
    border: none;
    padding: 0.5rem 0.85rem;
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
}

.period-btn.active, .period-btn:hover {
    background-color: var(--accent-indigo);
    color: #ffffff;
}

/* Custom Date Range Picker */
.custom-date-picker {
    display: flex;
    align-items: center;
    background-color: var(--bg-secondary);
    padding: 3px 8px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-card);
    gap: 6px;
}

.custom-date-picker .date-icon {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.date-input {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.12);
    color: var(--text-primary);
    padding: 0.35rem 0.6rem;
    border-radius: 6px;
    font-size: 0.82rem;
    font-family: inherit;
    outline: none;
    cursor: pointer;
    transition: var(--transition);
}

.date-input::-webkit-calendar-picker-indicator {
    filter: invert(0.8);
    cursor: pointer;
}

.date-input:focus, .date-input.active {
    border-color: var(--accent-indigo);
    background: rgba(99, 102, 241, 0.1);
}

.date-sep {
    color: var(--text-secondary);
    font-size: 0.8rem;
}

.btn-sm {
    padding: 0.35rem 0.6rem;
    font-size: 0.82rem;
}

.select-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.select-icon {
    position: absolute;
    left: 12px;
    color: var(--text-secondary);
}

#store-select {
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-card);
    padding: 0.55rem 1rem 0.55rem 2.2rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    outline: none;
    cursor: pointer;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.55rem 1.1rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-indigo), var(--accent-blue));
    color: #ffffff;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: rgba(255, 255, 255, 0.08);
    color: var(--text-primary);
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-card);
    color: var(--text-secondary);
}

.btn-outline:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

.btn-icon {
    width: 38px;
    height: 38px;
    padding: 0;
    justify-content: center;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-card);
    color: var(--text-secondary);
}

/* Glassmorphism Cards */
.glass {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-glass);
}

/* KPI Grid */
.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.25rem;
    margin-bottom: 1.75rem;
}

.kpi-card {
    padding: 1.25rem;
    display: flex;
    gap: 1rem;
    align-items: center;
    transition: var(--transition);
}

.kpi-card:hover {
    transform: translateY(-3px);
    border-color: rgba(99, 102, 241, 0.3);
}

.kpi-card.border-rose { border-left: 4px solid var(--accent-rose); }
.kpi-card.border-amber { border-left: 4px solid var(--accent-amber); }
.kpi-card.border-indigo { border-left: 4px solid var(--accent-indigo); }

/* Card Specific Shadows, Neon Glows & Colored Left Border Accents */
.kpi-card-green {
    border-left: 5px solid #10b981 !important;
    box-shadow: 0 10px 25px -5px rgba(16, 185, 129, 0.25), 0 4px 12px rgba(16, 185, 129, 0.12), inset 0 0 0 1px rgba(16, 185, 129, 0.25) !important;
}
.kpi-card-green:hover {
    transform: translateY(-3px) scale(1.01);
    box-shadow: 0 14px 32px -4px rgba(16, 185, 129, 0.45), 0 6px 16px rgba(16, 185, 129, 0.3), inset 0 0 0 1px rgba(16, 185, 129, 0.5) !important;
}

.kpi-card-purple {
    border-left: 5px solid #a855f7 !important;
    box-shadow: 0 10px 25px -5px rgba(168, 85, 247, 0.25), 0 4px 12px rgba(168, 85, 247, 0.12), inset 0 0 0 1px rgba(168, 85, 247, 0.25) !important;
}
.kpi-card-purple:hover {
    transform: translateY(-3px) scale(1.01);
    box-shadow: 0 14px 32px -4px rgba(168, 85, 247, 0.45), 0 6px 16px rgba(168, 85, 247, 0.3), inset 0 0 0 1px rgba(168, 85, 247, 0.5) !important;
}

.kpi-card-blue {
    border-left: 5px solid #3b82f6 !important;
    box-shadow: 0 10px 25px -5px rgba(59, 130, 246, 0.25), 0 4px 12px rgba(59, 130, 246, 0.12), inset 0 0 0 1px rgba(59, 130, 246, 0.25) !important;
}
.kpi-card-blue:hover {
    transform: translateY(-3px) scale(1.01);
    box-shadow: 0 14px 32px -4px rgba(59, 130, 246, 0.45), 0 6px 16px rgba(59, 130, 246, 0.3), inset 0 0 0 1px rgba(59, 130, 246, 0.5) !important;
}

.kpi-card-amber {
    border-left: 5px solid #f59e0b !important;
    box-shadow: 0 10px 25px -5px rgba(245, 158, 11, 0.25), 0 4px 12px rgba(245, 158, 11, 0.12), inset 0 0 0 1px rgba(245, 158, 11, 0.25) !important;
}
.kpi-card-amber:hover {
    transform: translateY(-3px) scale(1.01);
    box-shadow: 0 14px 32px -4px rgba(245, 158, 11, 0.45), 0 6px 16px rgba(245, 158, 11, 0.3), inset 0 0 0 1px rgba(245, 158, 11, 0.5) !important;
}

.kpi-card-rose {
    border-left: 5px solid #f43f5e !important;
    box-shadow: 0 10px 25px -5px rgba(244, 63, 94, 0.25), 0 4px 12px rgba(244, 63, 94, 0.12), inset 0 0 0 1px rgba(244, 63, 94, 0.25) !important;
}
.kpi-card-rose:hover {
    transform: translateY(-3px) scale(1.01);
    box-shadow: 0 14px 32px -4px rgba(244, 63, 94, 0.45), 0 6px 16px rgba(244, 63, 94, 0.3), inset 0 0 0 1px rgba(244, 63, 94, 0.5) !important;
}

.kpi-icon {
    width: 52px;
    height: 52px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.kpi-icon.revenue { background: rgba(16, 185, 129, 0.15); color: var(--accent-emerald); }
.kpi-icon.receipt { background: rgba(99, 102, 241, 0.15); color: var(--accent-indigo); }
.kpi-icon.ticket { background: rgba(59, 130, 246, 0.15); color: var(--accent-blue); }
.kpi-icon.cash { background: rgba(245, 158, 11, 0.15); color: var(--accent-amber); }
.kpi-icon.stock { background: rgba(139, 92, 246, 0.15); color: var(--accent-purple); }
.kpi-icon.expense-icon { background: rgba(244, 63, 94, 0.15); color: var(--accent-rose); }

.kpi-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.kpi-details h3 {
    font-size: 1.35rem;
    font-weight: 700;
    margin: 0.2rem 0;
}

.kpi-subtext {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.7rem;
    font-weight: 600;
}

.badge.positive {
    background-color: rgba(16, 185, 129, 0.2);
    color: var(--accent-emerald);
}

/* Charts Grid */
.charts-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.chart-card {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
}

.chart-card.full-width {
    grid-column: span 2;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.25rem;
}

.card-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
}

.card-desc {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.chart-wrapper {
    position: relative;
    height: 280px;
    width: 100%;
}

/* Tables & Grid */
.data-card {
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.grid-2-col {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.table-responsive {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    text-align: left;
}

.data-table th {
    padding: 0.85rem 1rem;
    color: var(--text-secondary);
    font-weight: 600;
    border-bottom: 1px solid var(--border-card);
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.5px;
}

.data-table td {
    padding: 0.85rem 1rem;
    border-bottom: 1px solid var(--border-card);
}

.data-table tbody tr:hover {
    background-color: rgba(255, 255, 255, 0.03);
}

/* Tab Management */
.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

.txt-success { color: var(--accent-emerald); }
.txt-danger { color: var(--accent-rose); }
.txt-amber { color: var(--accent-amber); }

/* Form Group */
.gsheets-form-group .input-group {
    display: flex;
    gap: 0.5rem;
    position: relative;
}

.gsheets-form-group input {
    flex: 1;
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.9rem;
}

.input-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

.help-text {
    display: block;
    margin-top: 0.5rem;
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .charts-grid, .grid-2-col {
        grid-template-columns: 1fr;
    }
    .chart-card.full-width {
        grid-column: span 1;
    }
}