/* Custom Design System - Sleek Premium Theme */
:root {
    --bg-gradient-start: #0f172a;
    --bg-gradient-end: #020617;
    --card-bg: rgba(30, 41, 59, 0.45);
    --card-border: rgba(255, 255, 255, 0.08);
    --card-shadow: rgba(0, 0, 0, 0.3);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-glow: rgba(99, 102, 241, 0.3);
    
    --accent: #06b6d4;
    --success: #10b981;
    --success-bg: rgba(16, 185, 129, 0.15);
    --success-border: rgba(16, 185, 129, 0.3);
    
    --warning: #f59e0b;
    --warning-bg: rgba(245, 158, 11, 0.15);
    
    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.15);
    --danger-border: rgba(239, 68, 68, 0.3);
    
    --border-radius-lg: 16px;
    --border-radius-md: 10px;
    --border-radius-sm: 6px;
    
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Global Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-gradient-end);
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.12) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(6, 182, 212, 0.12) 0%, transparent 40%),
        linear-gradient(to bottom, var(--bg-gradient-start), var(--bg-gradient-end));
    background-attachment: fixed;
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
::-webkit-scrollbar-track {
    background: rgba(15, 23, 42, 0.6);
}
::-webkit-scrollbar-thumb {
    background: rgba(99, 102, 241, 0.3);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: rgba(99, 102, 241, 0.5);
}

/* Header Styles */
.main-header {
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--card-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 1.2rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 2rem;
    height: 2rem;
    color: var(--primary);
    filter: drop-shadow(0 0 8px var(--primary-glow));
    animation: pulse 3s infinite;
}

.logo-area h1 {
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.025em;
}

.logo-area h1 span {
    color: var(--primary);
    font-weight: 800;
}

/* Status Indicator */
.status-indicator-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(15, 23, 42, 0.6);
    padding: 0.5rem 1rem;
    border-radius: 9999px;
    border: 1px solid var(--card-border);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.status-dot.online {
    background-color: var(--success);
    box-shadow: 0 0 10px var(--success);
    animation: flash-dot 2s infinite;
}

.status-dot.offline {
    background-color: var(--danger);
    box-shadow: 0 0 10px var(--danger);
}

.status-text {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
}

/* Dashboard Layout */
.dashboard-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 2rem;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 2rem;
    align-items: start;
}

/* Sidebar & Cards */
.sidebar-column {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.main-column {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--card-border);
    border-radius: var(--border-radius-lg);
    padding: 1.75rem;
    box-shadow: 0 10px 30px var(--card-shadow);
    transition: var(--transition-smooth);
}

.glass-card:hover {
    border-color: rgba(99, 102, 241, 0.2);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.6rem;
    margin-bottom: 0.4rem;
}

.card-icon {
    width: 1.35rem;
    height: 1.35rem;
    color: var(--primary);
}

.card-desc {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--primary), #8b5cf6);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-md);
    font-family: inherit;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-smooth);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.6);
    filter: brightness(1.1);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(1px);
}

.btn-primary:disabled {
    background: var(--text-muted);
    cursor: not-allowed;
    box-shadow: none;
    opacity: 0.4;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--card-border);
    color: var(--text-primary);
    padding: 0.6rem 1.2rem;
    border-radius: var(--border-radius-md);
    font-family: inherit;
    font-weight: 500;
    font-size: 0.875rem;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 255, 255, 0.2);
}

.btn-export {
    background: rgba(6, 182, 212, 0.15);
    border: 1px solid rgba(6, 182, 212, 0.3);
    color: var(--accent);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-md);
    font-family: inherit;
    font-weight: 500;
    font-size: 0.875rem;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: var(--transition-smooth);
}

.btn-export:hover {
    background: rgba(6, 182, 212, 0.25);
    transform: translateY(-1px);
}

.btn-export-icon {
    width: 1rem;
    height: 1rem;
}

.w-full {
    width: 100%;
}

/* Drag and Drop Zone */
.drag-drop-zone {
    border: 2px dashed var(--card-border);
    border-radius: var(--border-radius-md);
    padding: 2rem 1.5rem;
    text-align: center;
    background: rgba(15, 23, 42, 0.3);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.8rem;
    margin-bottom: 1.2rem;
    cursor: pointer;
}

.drag-drop-zone.dragover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

.upload-cloud-icon {
    width: 3rem;
    height: 3rem;
    color: var(--text-secondary);
}

.drag-text {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.file-name-display {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--accent);
    word-break: break-all;
}

/* Date Input fields */
.date-override-container {
    margin-bottom: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.date-override-container label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.date-override-container input[type="date"] {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--card-border);
    padding: 0.6rem 0.8rem;
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition-smooth);
}

.date-override-container input[type="date"]:focus {
    border-color: var(--primary);
}

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

/* Report History List */
.report-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    max-height: 350px;
    overflow-y: auto;
    padding-right: 0.25rem;
}

.report-item {
    background: rgba(15, 23, 42, 0.4);
    border: 1px solid var(--card-border);
    padding: 0.8rem 1rem;
    border-radius: var(--border-radius-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition-smooth);
}

.report-item:hover {
    background: rgba(15, 23, 42, 0.6);
    border-color: rgba(99, 102, 241, 0.15);
}

.report-info {
    display: flex;
    flex-direction: column;
    gap: 0.2rem;
    flex-grow: 1;
    min-width: 0;
}

.report-filename {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.report-details {
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.report-tag {
    background: rgba(255, 255, 255, 0.05);
    padding: 0.1rem 0.4rem;
    border-radius: 4px;
    font-weight: 500;
}

.report-tag.warehouse {
    color: var(--accent);
    background: rgba(6, 182, 212, 0.1);
}

.btn-delete-report {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.4rem;
    border-radius: var(--border-radius-sm);
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-delete-report:hover {
    color: var(--danger);
    background: var(--danger-bg);
}

.delete-icon {
    width: 1.1rem;
    height: 1.1rem;
}

.empty-state {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
    padding: 2rem 0;
}

/* Comparison Selector Card */
.selector-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
    margin-bottom: 1.5rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-group label {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.input-group select {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--card-border);
    padding: 0.75rem;
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    outline: none;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.input-group select:focus {
    border-color: var(--primary);
}

.input-group select option {
    background-color: var(--bg-gradient-start);
    color: var(--text-primary);
}

/* Results section styling */
.results-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    border-bottom: 1px solid var(--card-border);
    padding-bottom: 1.2rem;
    margin-bottom: 1.5rem;
}

.comparison-meta {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-top: 0.25rem;
}

/* Filter Bar */
.filter-bar {
    display: grid;
    grid-template-columns: 1fr 220px;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.search-input-wrapper {
    position: relative;
}

.search-icon {
    position: absolute;
    left: 0.8rem;
    top: 50%;
    transform: translateY(-50%);
    width: 1.1rem;
    height: 1.1rem;
    color: var(--text-muted);
}

.search-input-wrapper input {
    width: 100%;
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--card-border);
    padding: 0.65rem 1rem 0.65rem 2.4rem;
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    outline: none;
    transition: var(--transition-smooth);
}

.search-input-wrapper input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.15);
}

.select-filter-wrapper select {
    width: 100%;
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid var(--card-border);
    padding: 0.65rem 1rem;
    border-radius: var(--border-radius-md);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.9rem;
    outline: none;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.select-filter-wrapper select:focus {
    border-color: var(--primary);
}

/* Tables style */
.table-container {
    overflow-x: auto;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--card-border);
    background: rgba(15, 23, 42, 0.3);
    max-height: 550px;
    overflow-y: auto;
}

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

.data-table th {
    background: rgba(15, 23, 42, 0.8);
    padding: 0.9rem 1.2rem;
    font-weight: 600;
    color: var(--text-secondary);
    border-bottom: 1px solid var(--card-border);
    position: sticky;
    top: 0;
    z-index: 10;
}

.data-table td {
    padding: 0.9rem 1.2rem;
    border-bottom: 1px solid var(--card-border);
    color: var(--text-primary);
}

.data-table tbody tr {
    transition: var(--transition-smooth);
}

.data-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

.data-table tbody tr:last-child td {
    border-bottom: none;
}

.text-right {
    text-align: right;
}

.product-info-cell {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.product-name {
    font-weight: 500;
    color: var(--text-primary);
}

.product-codes {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.category-cell {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

/* Badge styles */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.2rem 0.6rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge.sale-positive {
    background: var(--success-bg);
    color: var(--success);
    border: 1px solid var(--success-border);
}

.badge.sale-negative {
    background: var(--danger-bg);
    color: var(--danger);
    border: 1px solid var(--danger-border);
}

.badge.sale-none {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.table-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Alerts and feedback messages */
.alert-message {
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius-md);
    font-size: 0.85rem;
    margin-top: 1rem;
    font-weight: 500;
    border: 1px solid transparent;
}

.alert-message.success {
    background: var(--success-bg);
    color: var(--success);
    border-color: var(--success-border);
}

.alert-message.error {
    background: var(--danger-bg);
    color: var(--danger);
    border-color: var(--danger-border);
}

/* Spinner */
.spinner {
    width: 1.2rem;
    height: 1.2rem;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.8s linear infinite;
    display: inline-block;
}

/* Animations */
@keyframes pulse {
    0% { transform: scale(1); filter: drop-shadow(0 0 6px var(--primary-glow)); }
    50% { transform: scale(1.05); filter: drop-shadow(0 0 12px rgba(99, 102, 241, 0.5)); }
    100% { transform: scale(1); filter: drop-shadow(0 0 6px var(--primary-glow)); }
}

@keyframes flash-dot {
    0% { box-shadow: 0 0 4px var(--success); }
    50% { box-shadow: 0 0 12px var(--success); }
    100% { box-shadow: 0 0 4px var(--success); }
}

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

/* Responsiveness */
@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}
@media (max-width: 640px) {
    .dashboard-container {
        padding: 1rem;
    }
    .selector-grid {
        grid-template-columns: 1fr;
    }
    .filter-bar {
        grid-template-columns: 1fr;
    }
    .header-container {
        flex-direction: column;
        gap: 1rem;
    }
}