/* ========================================================
   SpendWise - Modern Expense Tracking Dashboard
   Theme: Slate & Indigo Dark/Glassmorphic Modern Aesthetic
   ======================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Outfit:wght@500;600;700&display=swap');

:root {
    /* Color Palette */
    --bg-base: #090d16;
    --bg-surface: #0f172a;
    --bg-surface-elevated: #1e293b;
    --bg-surface-glass: rgba(30, 41, 59, 0.7);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-color-focus: rgba(99, 102, 241, 0.5);

    /* Primary Indigo Accents */
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --primary-active: #4338ca;
    --primary-light: rgba(99, 102, 241, 0.12);
    --primary-glow: rgba(99, 102, 241, 0.35);

    /* State Accents */
    --success: #10b981;
    --success-light: rgba(16, 185, 129, 0.12);
    --warning: #f59e0b;
    --warning-light: rgba(245, 158, 11, 0.12);
    --danger: #ef4444;
    --danger-light: rgba(239, 68, 68, 0.12);
    --danger-hover: #dc2626;
    --info: #0ea5e9;

    /* Text Colors */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --text-on-primary: #ffffff;

    /* Shadows & Radii */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -4px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 20px -3px var(--primary-glow);
    
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 9999px;

    /* Transitions */
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-base);
    background-image: 
        radial-gradient(at 0% 0%, rgba(99, 102, 241, 0.12) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(14, 165, 233, 0.08) 0px, transparent 50%);
    background-attachment: fixed;
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Container */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Top Navigation Bar */
.navbar {
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 50;
    padding: 1rem 0;
}

.navbar-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--text-primary);
}

.brand-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: linear-gradient(135deg, var(--primary), #4338ca);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 15px var(--primary-glow);
    color: #fff;
}

.brand-icon svg {
    width: 22px;
    height: 22px;
}

.brand-title {
    font-family: 'Outfit', sans-serif;
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.brand-title span {
    color: var(--primary);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 600;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    line-height: 1;
}

.btn svg {
    width: 16px;
    height: 16px;
}

.btn-primary {
    background: var(--primary);
    color: var(--text-on-primary);
    box-shadow: 0 2px 8px var(--primary-glow);
}

.btn-primary:hover {
    background: var(--primary-hover);
    box-shadow: 0 4px 14px var(--primary-glow);
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--bg-surface-elevated);
    border-color: var(--border-color);
    color: var(--text-secondary);
}

.btn-secondary:hover {
    background: #273549;
    color: var(--text-primary);
    border-color: rgba(255, 255, 255, 0.15);
}

.btn-danger {
    background: var(--danger-light);
    color: var(--danger);
    border-color: rgba(239, 68, 68, 0.2);
}

.btn-danger:hover {
    background: var(--danger);
    color: #fff;
}

.btn-icon {
    padding: 0.5rem;
    border-radius: var(--radius-sm);
}

/* Dashboard Header */
.dashboard-header {
    padding: 2.25rem 0 1.5rem;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1.25rem;
}

.dashboard-title h1 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.dashboard-title p {
    color: var(--text-secondary);
    font-size: 0.925rem;
    margin-top: 0.25rem;
}

.date-indicator {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    font-size: 0.85rem;
    font-weight: 500;
}

/* Summary Cards Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.25rem;
    margin-bottom: 2rem;
}

.metric-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    position: relative;
    overflow: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-sm);
}

.metric-card:hover {
    transform: translateY(-3px);
    border-color: rgba(99, 102, 241, 0.3);
    box-shadow: var(--shadow-md), var(--shadow-glow);
}

.metric-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--card-accent, var(--primary)), transparent);
}

.metric-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.metric-label {
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
}

.metric-icon-wrap {
    width: 38px;
    height: 38px;
    border-radius: var(--radius-md);
    background: var(--card-accent-light, var(--primary-light));
    color: var(--card-accent, var(--primary));
    display: flex;
    align-items: center;
    justify-content: center;
}

.metric-icon-wrap svg {
    width: 20px;
    height: 20px;
}

.metric-value {
    font-size: 1.85rem;
    font-weight: 700;
    font-family: 'Outfit', sans-serif;
    color: var(--text-primary);
    letter-spacing: -0.02em;
    margin-bottom: 0.25rem;
}

.metric-sub {
    font-size: 0.775rem;
    color: var(--text-muted);
}

/* Category Breakdown Progress Widget */
.breakdown-section {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.breakdown-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.breakdown-header h2 {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-primary);
}

.breakdown-bar {
    height: 12px;
    border-radius: var(--radius-full);
    background: var(--bg-surface-elevated);
    display: flex;
    overflow: hidden;
    margin-bottom: 1.25rem;
}

.breakdown-segment {
    height: 100%;
    transition: width 0.4s ease;
    position: relative;
}

.breakdown-legend {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.legend-percent {
    font-weight: 600;
    color: var(--text-primary);
}

/* History & Filter Section */
.history-section {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    margin-bottom: 3rem;
}

.history-header {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.25rem;
}

.history-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.history-title h2 {
    font-size: 1.2rem;
    font-weight: 600;
}

.history-count {
    background: var(--bg-surface-elevated);
    color: var(--text-secondary);
    padding: 0.2rem 0.6rem;
    border-radius: var(--radius-full);
    font-size: 0.775rem;
    font-weight: 600;
}

/* Filters Bar */
.filters-bar {
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 1rem;
    margin-bottom: 1.5rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.875rem;
    align-items: flex-end;
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    flex: 1;
    min-width: 160px;
}

.filter-group.search-group {
    flex: 1.5;
    min-width: 220px;
}

.filter-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--text-muted);
}

/* Inputs & Selects */
.input-control, .select-control {
    width: 100%;
    padding: 0.625rem 0.875rem;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.875rem;
    font-family: inherit;
    outline: none;
    transition: var(--transition);
}

.input-control:focus, .select-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.select-control option {
    background: var(--bg-surface-elevated);
    color: var(--text-primary);
}

/* Table Styling */
.table-responsive {
    width: 100%;
    overflow-x: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.expense-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.875rem;
}

.expense-table th {
    background: var(--bg-surface-elevated);
    color: var(--text-secondary);
    font-weight: 600;
    padding: 0.875rem 1rem;
    text-transform: uppercase;
    font-size: 0.725rem;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}

.expense-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
    vertical-align: middle;
}

.expense-table tbody tr {
    transition: background-color 0.15s ease;
}

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

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

/* Category Badge */
.category-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.45rem;
    padding: 0.3rem 0.65rem;
    border-radius: var(--radius-full);
    font-size: 0.775rem;
    font-weight: 500;
    white-space: nowrap;
    border: 1px solid transparent;
}

.badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.amount-col {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    font-size: 0.975rem;
    color: #f1f5f9;
}

.date-col {
    color: var(--text-secondary);
    white-space: nowrap;
}

.action-buttons {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.action-btn {
    padding: 0.4rem;
    border-radius: var(--radius-sm);
    border: 1px solid transparent;
    background: var(--bg-surface-elevated);
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

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

.action-btn.edit-btn:hover {
    background: var(--primary-light);
    color: var(--primary);
    border-color: rgba(99, 102, 241, 0.3);
}

.action-btn.delete-btn:hover {
    background: var(--danger-light);
    color: var(--danger);
    border-color: rgba(239, 68, 68, 0.3);
}

.action-btn svg {
    width: 15px;
    height: 15px;
}

/* Empty State */
.empty-state {
    padding: 3.5rem 1rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.empty-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--bg-surface-elevated);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
}

.empty-icon svg {
    width: 28px;
    height: 28px;
}

.empty-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.empty-desc {
    color: var(--text-secondary);
    font-size: 0.875rem;
    max-width: 320px;
}

/* Modal Dialog */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1.5rem;
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

.modal-backdrop.is-active {
    opacity: 1;
    visibility: visible;
}

.modal-box {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 520px;
    box-shadow: var(--shadow-lg), 0 0 40px rgba(0, 0, 0, 0.6);
    transform: scale(0.95) translateY(10px);
    transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1);
    overflow: hidden;
}

.modal-backdrop.is-active .modal-box {
    transform: scale(1) translateY(0);
}

.modal-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--text-primary);
}

.modal-close-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.35rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    display: flex;
}

.modal-close-btn:hover {
    color: var(--text-primary);
    background: var(--bg-surface-elevated);
}

.modal-body {
    padding: 1.5rem;
}

.modal-footer {
    padding: 1rem 1.5rem;
    background: rgba(0, 0, 0, 0.2);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
}

/* Form Styles */
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.form-full {
    grid-column: span 2;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.input-with-symbol {
    position: relative;
    display: flex;
    align-items: center;
}

.input-symbol {
    position: absolute;
    left: 0.875rem;
    color: var(--text-muted);
    font-weight: 600;
    pointer-events: none;
}

.input-with-symbol .input-control {
    padding-left: 2rem;
}

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 200;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    pointer-events: none;
}

.toast {
    pointer-events: auto;
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    padding: 0.875rem 1.25rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-width: 280px;
    max-width: 400px;
    animation: slideInRight 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

.toast.toast-success {
    border-left: 4px solid var(--success);
}

.toast.toast-error {
    border-left: 4px solid var(--danger);
}

.toast-message {
    font-size: 0.875rem;
    color: var(--text-primary);
    flex: 1;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Footer */
.footer {
    margin-top: auto;
    border-top: 1px solid var(--border-color);
    padding: 1.75rem 0;
    background: var(--bg-surface);
    color: var(--text-muted);
    font-size: 0.85rem;
}

.footer-inner {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.footer-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: var(--primary);
    font-weight: 600;
}

/* Responsive Breakpoints */
@media (max-width: 1024px) {
    .metrics-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .metrics-grid {
        grid-template-columns: 1fr;
    }
    
    .filters-bar {
        flex-direction: column;
        align-items: stretch;
    }

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

    .form-full {
        grid-column: span 1;
    }

    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
    }
}