/* ===== CSS Variables ===== */
:root {
    --bg-primary: #0a0e14;
    --bg-secondary: #111922;
    --bg-card: #151d28;
    --bg-input: #1a2433;
    --bg-hover: #1e2a3a;
    --accent-primary: #00d9ff;
    --accent-secondary: #ff6b35;
    --accent-success: #4ade80;
    --accent-warning: #fbbf24;
    --accent-danger: #f87171;
    --accent-purple: #a78bfa;
    --text-primary: #e6edf3;
    --text-secondary: #8b949e;
    --text-muted: #6e7681;
    --border-color: #2d3a4d;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
    --glow: 0 0 20px rgba(0, 217, 255, 0.3);
}

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

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

/* ===== Background Pattern ===== */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        radial-gradient(circle at 10% 10%, rgba(0, 217, 255, 0.03) 0%, transparent 40%),
        radial-gradient(circle at 90% 90%, rgba(255, 107, 53, 0.03) 0%, transparent 40%),
        linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    z-index: -1;
}

/* ===== Scrollbar ===== */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ===== Login Screen ===== */
.login-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.login-box {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 48px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow);
}

.login-logo {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.login-logo p {
    color: var(--text-secondary);
    margin-top: 8px;
}

/* ===== Form Elements ===== */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 12px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 217, 255, 0.1);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

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

.form-row {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 20px;
    font-family: 'Outfit', sans-serif;
    font-size: 0.95rem;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), #0099cc);
    color: var(--bg-primary);
    width: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--glow);
}

.btn-secondary {
    background: var(--bg-input);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-hover);
    border-color: var(--accent-primary);
}

.btn-danger {
    background: rgba(248, 113, 113, 0.15);
    color: var(--accent-danger);
    border: 1px solid rgba(248, 113, 113, 0.3);
}

.btn-danger:hover {
    background: rgba(248, 113, 113, 0.25);
}

.btn-small {
    padding: 8px 14px;
    font-size: 0.85rem;
}

/* ===== Error Message ===== */
.error-message {
    color: var(--accent-danger);
    text-align: center;
    margin-bottom: 16px;
    font-size: 0.875rem;
    padding: 12px;
    background: rgba(248, 113, 113, 0.1);
    border-radius: 8px;
    border: 1px solid rgba(248, 113, 113, 0.2);
}

/* ===== Header ===== */
.header {
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    padding: 12px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header h1 {
    font-size: 1.4rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.header-stats {
    display: flex;
    gap: 12px;
}

.stat {
    padding: 6px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    font-family: 'JetBrains Mono', monospace;
}

.stat-income {
    background: rgba(74, 222, 128, 0.1);
    color: var(--accent-success);
    border: 1px solid rgba(74, 222, 128, 0.2);
}

.stat-expense {
    background: rgba(248, 113, 113, 0.1);
    color: var(--accent-danger);
    border: 1px solid rgba(248, 113, 113, 0.2);
}

.stat-profit {
    background: rgba(0, 217, 255, 0.1);
    color: var(--accent-primary);
    border: 1px solid rgba(0, 217, 255, 0.2);
}

/* ===== Tab Navigation ===== */
.tab-nav {
    display: flex;
    gap: 4px;
    padding: 12px 24px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    overflow-x: auto;
}

.tab-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: transparent;
    border: 1px solid transparent;
    border-radius: 8px;
    color: var(--text-secondary);
    font-family: 'Outfit', sans-serif;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    white-space: nowrap;
}

.tab-btn:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.tab-btn.active {
    background: var(--bg-card);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.tab-icon {
    font-size: 1.1rem;
}

/* ===== Tab Content ===== */
.tab-content {
    padding: 24px;
    max-width: 1600px;
    margin: 0 auto;
}

.tab-panel {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-panel.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ===== Panel ===== */
.panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
}

.panel-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ===== Panel Layout ===== */
.panel-layout {
    display: grid;
    grid-template-columns: 350px 1fr;
    gap: 24px;
}

.form-panel {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.list-panel {
    min-height: 400px;
}

/* ===== Dashboard Grid ===== */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.summary-cards {
    grid-column: span 4;
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.summary-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: all 0.3s ease;
}

.summary-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow);
}

.card-icon {
    font-size: 2rem;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
}

.card-income .card-icon { background: rgba(74, 222, 128, 0.15); }
.card-expense .card-icon { background: rgba(248, 113, 113, 0.15); }
.card-profit .card-icon { background: rgba(0, 217, 255, 0.15); }
.card-vehicles .card-icon { background: rgba(167, 139, 250, 0.15); }

.card-content {
    display: flex;
    flex-direction: column;
}

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

.card-value {
    font-size: 1.5rem;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
}

.card-income .card-value { color: var(--accent-success); }
.card-expense .card-value { color: var(--accent-danger); }
.card-profit .card-value { color: var(--accent-primary); }
.card-vehicles .card-value { color: var(--accent-purple); }

/* Monthly Stats */
.monthly-stats {
    grid-column: span 2;
}

.month-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.month-card {
    background: var(--bg-secondary);
    border-radius: 8px;
    padding: 16px;
    text-align: center;
}

.month-label {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    margin-bottom: 8px;
}

.month-value {
    font-size: 1.25rem;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
}

.month-value.income { color: var(--accent-success); }
.month-value.expense { color: var(--accent-danger); }
.month-value.profit { color: var(--accent-primary); }

/* Charts */
.expenses-chart, .income-chart {
    grid-column: span 2;
}

.chart-container {
    min-height: 200px;
}

.chart-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.chart-bar-label {
    width: 120px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.chart-bar-track {
    flex: 1;
    height: 24px;
    background: var(--bg-secondary);
    border-radius: 4px;
    overflow: hidden;
}

.chart-bar-fill {
    height: 100%;
    border-radius: 4px;
    transition: width 0.5s ease;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: 8px;
    font-size: 0.75rem;
    font-weight: 600;
    font-family: 'JetBrains Mono', monospace;
    color: var(--bg-primary);
}

/* Vehicle Summary */
.vehicle-summary {
    grid-column: span 2;
}

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

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

.data-table th,
.data-table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.data-table th {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-muted);
    font-weight: 600;
}

.data-table td {
    font-size: 0.9rem;
}

.data-table tbody tr:hover {
    background: var(--bg-hover);
}

/* Recent Activity */
.recent-activity {
    grid-column: span 2;
}

.activity-tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
}

.activity-tab {
    padding: 8px 16px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-secondary);
    font-family: 'Outfit', sans-serif;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.activity-tab:hover {
    background: var(--bg-hover);
}

.activity-tab.active {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: var(--bg-primary);
}

.activity-list {
    max-height: 300px;
    overflow-y: auto;
}

.activity-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: 8px;
    margin-bottom: 8px;
}

.activity-info {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.activity-title {
    font-weight: 500;
}

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

.activity-amount {
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
}

.activity-amount.income { color: var(--accent-success); }
.activity-amount.expense { color: var(--accent-danger); }

/* ===== Data List ===== */
.data-list {
    max-height: calc(100vh - 300px);
    overflow-y: auto;
}

.list-item {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 16px;
    margin-bottom: 12px;
    transition: all 0.3s ease;
}

.list-item:hover {
    border-color: var(--accent-primary);
}

.list-item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 10px;
}

.list-item-title {
    font-weight: 600;
    font-size: 1rem;
}

.list-item-date {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: 'JetBrains Mono', monospace;
}

.list-item-details {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

.detail-tag {
    padding: 4px 10px;
    background: var(--bg-input);
    border-radius: 6px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    font-family: 'JetBrains Mono', monospace;
}

.list-item-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 12px;
    border-top: 1px solid var(--border-color);
}

.list-item-amount {
    font-size: 1.25rem;
    font-weight: 700;
    font-family: 'JetBrains Mono', monospace;
}

.amount-positive { color: var(--accent-success); }
.amount-negative { color: var(--accent-danger); }

/* ===== Delete Button ===== */
.delete-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 6px;
    border-radius: 6px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.delete-btn:hover {
    background: rgba(248, 113, 113, 0.1);
    color: var(--accent-danger);
}

/* ===== Rate Card ===== */
.rate-card {
    background: linear-gradient(135deg, var(--bg-secondary), var(--bg-input));
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 16px;
    margin-bottom: 12px;
    transition: all 0.3s ease;
}

.rate-card:hover {
    border-color: var(--accent-warning);
}

.rate-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.rate-card-name {
    font-weight: 600;
    font-size: 1rem;
}

.rate-card-value {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-warning);
    font-family: 'JetBrains Mono', monospace;
}

.rate-card-unit {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ===== Vehicle Card ===== */
.vehicle-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 16px;
    margin-bottom: 12px;
    transition: all 0.3s ease;
}

.vehicle-card:hover {
    border-color: var(--accent-purple);
}

.vehicle-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.vehicle-card-number {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--accent-primary);
    font-family: 'JetBrains Mono', monospace;
}

.vehicle-card-details {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.vehicle-tag {
    padding: 4px 10px;
    background: var(--bg-input);
    border-radius: 6px;
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.vehicle-tag.type {
    background: rgba(167, 139, 250, 0.15);
    color: var(--accent-purple);
}

.vehicle-tag.driver {
    background: rgba(0, 217, 255, 0.15);
    color: var(--accent-primary);
}

/* ===== Expense Type Badges ===== */
.expense-type {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.expense-fuel { background: rgba(255, 107, 53, 0.2); color: #ff6b35; }
.expense-maintenance { background: rgba(139, 92, 246, 0.2); color: #a78bfa; }
.expense-wages { background: rgba(59, 130, 246, 0.2); color: #60a5fa; }
.expense-oil { background: rgba(236, 72, 153, 0.2); color: #f472b6; }
.expense-challan { background: rgba(245, 158, 11, 0.2); color: #fbbf24; }
.expense-labour { background: rgba(20, 184, 166, 0.2); color: #2dd4bf; }
.expense-other { background: rgba(148, 163, 184, 0.2); color: #94a3b8; }

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-muted);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.5;
}

/* ===== Utility Classes ===== */
.hidden {
    display: none !important;
}

/* ===== Responsive ===== */
@media (max-width: 1200px) {
    .dashboard-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .summary-cards {
        grid-column: span 2;
        grid-template-columns: repeat(2, 1fr);
    }

    .monthly-stats,
    .expenses-chart,
    .income-chart,
    .vehicle-summary,
    .recent-activity {
        grid-column: span 2;
    }

    .panel-layout {
        grid-template-columns: 1fr;
    }

    .form-panel {
        position: static;
    }
}

@media (max-width: 768px) {
    .header {
        flex-direction: column;
        gap: 12px;
        padding: 12px 16px;
    }

    .header-stats {
        display: none;
    }

    .tab-nav {
        padding: 8px 12px;
    }

    .tab-btn {
        padding: 8px 12px;
        font-size: 0.85rem;
    }

    .tab-btn span:not(.tab-icon) {
        display: none;
    }

    .tab-content {
        padding: 16px;
    }

    .summary-cards {
        grid-template-columns: 1fr;
    }

    .month-cards {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .activity-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
}