:root {
    --bg-dark: #0f172a;
    --bg-darker: #020617;
    --card-bg: rgba(30, 41, 59, 0.7);
    --card-border: rgba(255, 255, 255, 0.1);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-blue: #3b82f6;
    --accent-purple: #8b5cf6;
    --accent-green: #10b981;
    --accent-orange: #f59e0b;
    --accent-red: #ef4444;
    
    --sidebar-width: 260px;
    --header-height: 80px;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Pretendard', sans-serif;
}

body {
    background-color: var(--bg-darker);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    /* Subtle background glow effect */
    background-image: 
        radial-gradient(circle at 15% 50%, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 85% 30%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
}

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

/* Sidebar Styles */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-dark);
    border-right: 1px solid var(--card-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 10;
}

.logo {
    height: var(--header-height);
    display: flex;
    align-items: center;
    padding: 0 24px;
    gap: 12px;
}

.logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border-radius: 8px;
    position: relative;
    overflow: hidden;
}

.logo-icon::after {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.3), transparent);
    transform: rotate(45deg);
    animation: shine 3s infinite;
}

@keyframes shine {
    0% { transform: translateX(-100%) rotate(45deg); }
    100% { transform: translateX(100%) rotate(45deg); }
}

.logo h1 {
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(to right, #fff, #cbd5e1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-menu {
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    gap: 8px;
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: 12px;
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    transform: translateX(4px);
}

.nav-item.active {
    background: linear-gradient(to right, rgba(59, 130, 246, 0.1), rgba(139, 92, 246, 0.1));
    color: var(--text-primary);
    border-left: 3px solid var(--accent-blue);
}

.user-profile {
    padding: 24px;
    border-top: 1px solid var(--card-border);
    display: flex;
    align-items: center;
    gap: 12px;
}

.avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--accent-blue);
}

.user-info {
    display: flex;
    flex-direction: column;
}

.user-info .name {
    font-size: 0.875rem;
    font-weight: 600;
}

.user-info .status {
    font-size: 0.75rem;
    color: var(--accent-green);
    display: flex;
    align-items: center;
    gap: 4px;
}

.user-info .status::before {
    content: '';
    width: 6px;
    height: 6px;
    background-color: var(--accent-green);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--accent-green);
}

/* Main Content Styles */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    padding: 0 32px 32px;
}

.top-header {
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.date-filter h2 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 4px;
}

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

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

.action-btn {
    padding: 10px 20px;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid var(--card-border);
    background: var(--card-bg);
    color: var(--text-primary);
}

.action-btn:hover {
    background: rgba(255, 255, 255, 0.1);
}

.action-btn.primary {
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-purple));
    border: none;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.action-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(59, 130, 246, 0.4);
}

/* Dashboard Grid */
.dashboard-grid {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

/* Glassmorphism Classes */
.glass {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--card-border);
    border-radius: 16px;
}

.card {
    padding: 24px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

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

/* Summary Cards */
.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 24px;
}

.summary-card {
    border-radius: 16px;
    position: relative;
    overflow: hidden;
    display: flex;
    align-items: center;
    gap: 20px;
}

.clickable-card {
    cursor: pointer;
}
.clickable-card:active {
    transform: translateY(0);
}

.gradient-1 { background: linear-gradient(135deg, rgba(59,130,246,0.1), rgba(30,41,59,0.8)); border: 1px solid rgba(59,130,246,0.2); }
.gradient-2 { background: linear-gradient(135deg, rgba(139,92,246,0.1), rgba(30,41,59,0.8)); border: 1px solid rgba(139,92,246,0.2); }
.gradient-3 { background: linear-gradient(135deg, rgba(16,185,129,0.1), rgba(30,41,59,0.8)); border: 1px solid rgba(16,185,129,0.2); }
.gradient-4 { background: linear-gradient(135deg, rgba(245,158,11,0.1), rgba(30,41,59,0.8)); border: 1px solid rgba(245,158,11,0.2); }

.card-icon {
    font-size: 2.5rem;
    padding: 16px;
    background: rgba(255,255,255,0.05);
    border-radius: 16px;
    backdrop-filter: blur(4px);
}

.card-content h3 {
    font-size: 0.875rem;
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 8px;
}

.card-content .value {
    font-size: 1.75rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.trend {
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 12px;
}

.trend.positive { background: rgba(16, 185, 129, 0.1); color: var(--accent-green); }
.trend.negative { background: rgba(239, 68, 68, 0.1); color: var(--accent-red); }
.trend.neutral { background: rgba(148, 163, 184, 0.1); color: var(--text-secondary); }

/* Charts Section */
.charts-section {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 24px;
}

.chart-container h3 {
    font-size: 1.125rem;
    margin-bottom: 20px;
    font-weight: 600;
}

.chart-wrapper {
    position: relative;
    height: 300px;
    width: 100%;
}

/* Recent Drives Table */
.recent-drives .card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.recent-drives h3 {
    font-size: 1.125rem;
    font-weight: 600;
}

.view-all-btn {
    background: transparent;
    border: none;
    color: var(--accent-blue);
    font-weight: 600;
    cursor: pointer;
    font-size: 0.875rem;
}

.view-all-btn:hover {
    text-decoration: underline;
}

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

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

.drives-table th {
    text-align: left;
    padding: 12px 16px;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    border-bottom: 1px solid var(--card-border);
}

.drives-table td {
    padding: 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    font-size: 0.875rem;
}

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

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

.status-badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-completed { background: rgba(16, 185, 129, 0.15); color: var(--accent-green); border: 1px solid rgba(16, 185, 129, 0.3); }
.status-progress { background: rgba(59, 130, 246, 0.15); color: var(--accent-blue); border: 1px solid rgba(59, 130, 246, 0.3); }
.status-cancelled { background: rgba(239, 68, 68, 0.15); color: var(--accent-red); border: 1px solid rgba(239, 68, 68, 0.3); }

/* Responsive Design */
@media (max-width: 1024px) {
    .charts-section {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .dashboard-container {
        flex-direction: column;
        align-items: stretch;
    }

    .sidebar {
        position: relative;
        width: 100%;
        height: auto;
        transform: none;
        border-right: none;
        border-bottom: 1px solid var(--card-border);
    }

    .main-content {
        margin-left: 0;
        padding: 0 16px 16px;
    }

    .top-header {
        height: auto;
        padding: 20px 0 0;
        flex-direction: column;
        align-items: stretch;
        gap: 16px;
    }

    .header-actions {
        display: flex;
        flex-direction: column;
        gap: 10px;
        width: 100%;
    }

    .header-actions .action-btn {
        width: 100%;
        min-width: 0;
    }

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

    .charts-section {
        grid-template-columns: 1fr;
    }

    .chart-wrapper {
        height: 240px;
    }

    .card {
        padding: 20px;
    }

    .summary-card {
        flex-direction: column;
        align-items: flex-start;
    }

    .card-icon {
        font-size: 2rem;
        padding: 12px;
    }

    .card-content .value {
        font-size: 1.5rem;
    }

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

    .drives-table th,
    .drives-table td {
        padding: 12px 10px;
    }

    .form-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .modal-content {
        max-width: 100%;
        margin: 16px;
        padding: 24px;
    }
}

@media (max-width: 480px) {
    .top-header {
        padding-top: 16px;
    }

    .date-filter h2 {
        font-size: 1.25rem;
    }

    .action-btn {
        font-size: 0.82rem;
        padding: 10px 14px;
    }

    .chart-wrapper {
        height: 200px;
    }

    .summary-card {
        gap: 14px;
    }

    .card-content .value {
        font-size: 1.35rem;
    }
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: rgba(2, 6, 23, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 24px 0;
    overflow-y: auto;
    z-index: 100;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.modal-content {
    width: min(100%, 95vw);
    max-width: 500px;
    max-height: calc(100vh - 48px);
    padding: 32px;
    border-radius: 20px;
    transform: translateY(20px);
    transition: transform 0.3s ease;
    box-shadow: var(--shadow-lg);
    overflow-y: auto;
}

.modal-overlay.active .modal-content {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.modal-header h2 {
    font-size: 1.5rem;
    font-weight: 700;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.2s ease;
}

.close-btn:hover {
    color: var(--text-primary);
}

.entry-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input,
.form-group select {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--card-border);
    padding: 12px 16px;
    border-radius: 10px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.2s ease;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.readonly-input {
    background: rgba(15, 23, 42, 0.3) !important;
    color: var(--accent-green) !important;
    font-weight: 600;
    cursor: not-allowed;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 12px;
}

/* Color input icons for dark mode */
::-webkit-calendar-picker-indicator {
    filter: invert(1);
    cursor: pointer;
}

/* Profit Formula Card Styles */
.profit-formula {
    display: flex;
    flex-direction: column;
    gap: 12px;
    font-size: 1rem;
}

.formula-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.formula-row span:last-child {
    font-weight: 600;
    font-size: 1.125rem;
}

.formula-divider {
    border: 0;
    border-top: 1px dashed var(--card-border);
    margin: 4px 0;
}

.total-row {
    font-size: 1.125rem;
    font-weight: 700;
    margin-top: 4px;
}

.total-row span:last-child {
    font-size: 1.25rem;
}

.expense-details {
    padding-left: 16px;
    border-left: 2px solid var(--card-border);
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin: 8px 0;
}

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

.sub-row span:last-child {
    font-size: 1rem;
    font-weight: 500;
}

.final-total-row {
    font-size: 1.25rem;
    font-weight: 700;
    margin-top: 8px;
    padding-top: 8px;
}

.final-total-row span:last-child {
    font-size: 1.5rem;
}

.text-red { color: var(--accent-red) !important; }
.text-red span { color: var(--accent-red) !important; }
.text-green { color: var(--accent-green) !important; }
.text-green span { color: var(--accent-green) !important; }