:root {
    /* Default Theme: Emerald-Gold */
    --primary: #10B981; /* Emerald */
    --primary-light: #D1FAE5;
    --secondary: #F59E0B; /* Gold */
    --bg-body: #F9FAFB;
    --bg-card: #FFFFFF;
    --bg-sidebar: #FFFFFF;
    --text-main: #111827;
    --text-muted: #6B7280;
    --border-color: #E5E7EB;
    
    --success: #10B981;
    --danger: #EF4444;
    
    --radius-lg: 16px;
    --radius-md: 12px;
    --radius-sm: 8px;
    
    --sidebar-width: 260px;
}

body.theme-black-white {
    --primary: #000000;
    --primary-light: #F3F4F6;
    --secondary: #4B5563;
    --bg-body: #FFFFFF;
    --bg-card: #FFFFFF;
    --bg-sidebar: #FAFAFA;
    --text-main: #000000;
    --text-muted: #6B7280;
    --border-color: #E5E7EB;
}

body.theme-pink-purple {
    --primary: #D946EF; /* Fuchsia/Pink */
    --primary-light: #FAE8FF;
    --secondary: #8B5CF6; /* Purple */
    --bg-body: #FFF1F2; /* Soft pink bg */
    --bg-card: #FFFFFF;
    --bg-sidebar: #FFFFFF;
    --text-main: #4A044E;
    --text-muted: #86198F;
    --border-color: #FBCFE8;
}

body.theme-navy-orange {
    --primary: #1E3A8A; /* Navy */
    --primary-light: #DBEAFE;
    --secondary: #F97316; /* Orange */
    --bg-body: #F1F5F9;
    --bg-card: #FFFFFF;
    --bg-sidebar: #1E293B; /* Dark sidebar */
    --text-main: #F8FAFC; /* Light text for dark sidebar, overridden for main content */
    --text-muted: #94A3B8;
    --border-color: #334155;
    --sidebar-text: #F8FAFC;
}

/* Light mode text for main content when sidebar is dark */
body.theme-navy-orange .app-main, body.theme-navy-orange .modal {
    --text-main: #0F172A;
    --text-muted: #475569;
    --border-color: #E2E8F0;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    transition: background-color 0.3s ease;
}

.hidden {
    display: none !important;
}

.text-success { color: var(--success); }
.text-danger { color: var(--danger); }
.text-primary { color: var(--primary); }
.text-muted { color: var(--text-muted); }

/* Layout Grid */
#app-container {
    display: flex;
    min-height: 100vh;
}

/* Sidebar */
.app-sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 50;
    transition: transform 0.3s ease, width 0.3s ease;
    color: var(--sidebar-text, var(--text-main));
}

.app-sidebar.collapsed {
    transform: translateX(-100%);
}

.sidebar-logo {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 12px 24px;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
}

.sidebar-logo-content {
    display: flex;
    align-items: center;
    gap: 12px;
}

.sidebar-logo-icon {
    /* Money swirl by wind - custom styling */
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, #10B981, #fff);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 1.2rem;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.sidebar-logo-text {
    display: flex;
    flex-direction: column;
}

.sidebar-logo-text span {
    font-size: 1.1rem;
    letter-spacing: -0.5px;
}

.sidebar-logo-text small {
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.collapse-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1rem;
    padding: 4px;
    border-radius: 4px;
}
.collapse-btn:hover {
    background: var(--primary-light);
    color: var(--primary);
}

/* Sidebar Toggle Button (when collapsed) */
.sidebar-toggle-floating {
    position: fixed;
    top: 24px;
    left: 24px;
    z-index: 60;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    border-radius: var(--radius-sm);
    padding: 8px;
    cursor: pointer;
    color: var(--primary);
    display: none;
}
.sidebar-toggle-floating.visible {
    display: block;
}

.nav-section-title {
    font-size: 0.65rem;
    text-transform: uppercase;
    font-weight: 700;
    color: var(--text-muted);
    padding: 16px 12px 8px;
    letter-spacing: 1px;
}

.sidebar-nav {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    color: var(--sidebar-text, var(--text-muted));
    text-decoration: none;
    font-weight: 500;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    background: transparent;
    text-align: left;
    width: 100%;
}

.nav-item i {
    font-size: 1.25rem;
    color: var(--text-muted);
    transition: color 0.2s;
}

.nav-item:hover {
    background: var(--primary-light);
    color: var(--primary);
}

.nav-item:hover i {
    color: var(--primary);
}

.nav-item.active {
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 600;
}

.nav-item.active i {
    color: var(--primary);
}

/* Main Content */
.app-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 32px 40px;
    display: flex;
    flex-direction: column;
    gap: 24px;
    max-width: 1200px;
    transition: margin-left 0.3s ease;
}

.app-main.expanded {
    margin-left: 0;
}

.header-actions {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 16px;
    margin-bottom: 8px;
}

/* Welcome & Quotes */
.welcome-banner {
    margin-bottom: 16px;
}
.welcome-banner h1 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--text-main);
}
.welcome-banner p {
    color: var(--text-muted);
    font-size: 0.95rem;
    font-style: italic;
}

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.02);
    color: var(--text-main);
}

/* Typography elements */
.summary-title {
    font-size: 0.75rem;
    text-transform: uppercase;
    font-weight: 600;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}
.summary-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-main);
}
.summary-subtext {
    font-size: 0.75rem;
    color: var(--text-muted);
}
h3 {
    color: var(--text-main);
}

/* Top Summary Row */
.top-summary {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}
.calendar-summary {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
    margin-bottom: 24px;
}
.summary-card {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

/* Middle Metrics Row */
.middle-metrics {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}
.metric-card {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding: 16px 20px;
}
.metric-value-row {
    display: flex;
    align-items: center;
    gap: 8px;
}
.metric-value-row i {
    font-size: 1.2rem;
    color: var(--primary);
}
.metric-value-row .val {
    font-size: 1.1rem;
    font-weight: 700;
}

/* Bottom Charts Row */
.charts-row {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 24px;
}
.chart-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}
.chart-header h3 {
    font-size: 1rem;
    font-weight: 600;
}
.chart-controls select {
    border: 1px solid var(--border-color);
    background: var(--bg-card);
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
    color: var(--text-main);
    cursor: pointer;
}
.chart-container {
    position: relative;
    height: 280px;
    width: 100%;
}
.donut-container {
    height: 220px;
}

/* Ledger List */
.ledger-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}
.ledger-table {
    width: 100%;
    border-collapse: collapse;
}
.ledger-table th, .ledger-table td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}
.ledger-table th {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: var(--text-muted);
    font-weight: 600;
}
.ledger-table td {
    font-size: 0.9rem;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal {
    background: var(--bg-card);
    color: var(--text-main);
    border-radius: var(--radius-lg);
    padding: 32px;
    width: 100%;
    max-width: 480px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

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

.modal-header h2 {
    font-size: 1.25rem;
}

.btn {
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background 0.2s, opacity 0.2s;
}

.btn-primary {
    background: var(--primary);
    color: white;
}
.btn-primary:hover {
    opacity: 0.9;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-main);
}
.btn-outline:hover {
    background: var(--primary-light);
    color: var(--primary);
    border-color: var(--primary);
}

.input-group {
    margin-bottom: 16px;
}
.input-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text-muted);
}
.input-group input, .input-group select {
    width: 100%;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: var(--bg-body);
    color: var(--text-main);
    font-family: inherit;
    font-size: 0.9rem;
}
.input-group input:focus, .input-group select:focus {
    outline: none;
    border-color: var(--primary);
}

.icon-btn, .close-btn {
    background: transparent;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    color: var(--text-muted);
}
.icon-btn:hover, .close-btn:hover {
    color: var(--text-main);
}

/* Calendar Grid */
.calendar-container {
    padding: 24px;
}

.calendar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.calendar-nav-left, .calendar-nav-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.cal-nav-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: 1px solid var(--border-color);
    background: var(--bg-body);
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 1rem;
}

.cal-nav-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.cal-today-btn {
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: var(--bg-body);
    color: var(--text-main);
    font-size: 0.8rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s;
}

.cal-today-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.calendar-date-selectors {
    display: flex;
    gap: 8px;
    align-items: center;
}

.calendar-select {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-main);
    background: transparent;
    border: 1px solid transparent;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-family: inherit;
    transition: all 0.2s;
    appearance: none;
    -webkit-appearance: none;
    outline: none;
}

.calendar-select:hover, .calendar-select:focus {
    background: var(--bg-body);
    border-color: var(--border-color);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
}

.calendar-day-header-cell {
    text-align: center;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-muted);
    padding: 8px 0;
    letter-spacing: 0.5px;
}

.calendar-day-header-cell.weekend {
    color: var(--danger);
    opacity: 0.7;
}

.calendar-cell {
    border-radius: var(--radius-md);
    padding: 8px;
    min-height: 76px;
    display: flex;
    flex-direction: column;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    position: relative;
    box-shadow: 0 1px 3px rgba(0,0,0,0.02);
}

.calendar-cell:hover {
    background: var(--bg-body);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0,0,0,0.06);
    border-color: var(--primary-light);
    z-index: 2;
}

.calendar-cell.empty {
    background: transparent;
    border-color: transparent;
    box-shadow: none;
    cursor: default;
}
.calendar-cell.empty:hover {
    transform: none;
    box-shadow: none;
    background: transparent;
    border-color: transparent;
}

.calendar-cell.trailing {
    opacity: 0.4;
    background: var(--bg-body);
    border-style: dashed;
    cursor: default;
}
.calendar-cell.trailing:hover {
    transform: none;
    box-shadow: none;
    border-color: var(--border-color);
}

.calendar-cell.today {
    background: var(--primary-light);
    border-color: var(--primary);
}

.calendar-cell.today .calendar-date-num {
    background: var(--primary);
    color: white;
    width: 26px;
    height: 26px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    box-shadow: 0 2px 4px rgba(99, 102, 241, 0.4);
}

.calendar-cell.selected {
    border-color: var(--primary);
    background: var(--bg-body);
    box-shadow: 0 0 0 2px var(--primary);
    transform: translateY(-1px);
}

.calendar-date-num {
    font-weight: 700;
    font-size: 0.9rem;
    color: var(--text-main);
    margin-bottom: auto;
    line-height: 1;
}

.calendar-day-totals {
    display: flex;
    flex-direction: column;
    gap: 3px;
    font-size: 0.65rem;
    font-weight: 700;
    margin-top: 6px;
}

.cal-income, .cal-expense {
    padding: 3px 6px;
    border-radius: 4px;
    text-align: right;
    display: inline-block;
    width: 100%;
}

.cal-income {
    color: var(--success);
    background: var(--success-light);
}

.cal-expense {
    color: var(--danger);
    background: var(--danger-light);
}

/* Calendar Two-Column Layout */
.calendar-layout-row {
    display: grid;
    grid-template-columns: 2.5fr 1fr;
    gap: 24px;
    align-items: start;
}

.daily-details-panel {
    display: flex;
    flex-direction: column;
    position: sticky;
    top: 24px;
}

.panel-header {
    margin-bottom: 12px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.panel-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 2px;
}

.panel-daily-subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.panel-daily-summary {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin-bottom: 16px;
}

.panel-mini-stat {
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.panel-mini-stat.income {
    background: rgba(16, 185, 129, 0.08);
}

.panel-mini-stat.expense {
    background: rgba(239, 68, 68, 0.08);
}

.mini-stat-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
}

.panel-mini-stat.income .mini-stat-value {
    color: var(--success);
    font-size: 0.95rem;
    font-weight: 700;
}

.panel-mini-stat.expense .mini-stat-value {
    color: var(--danger);
    font-size: 0.95rem;
    font-weight: 700;
}

.panel-body {
    overflow-y: auto;
    max-height: 350px;
}

.panel-empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    color: var(--text-muted);
    font-size: 0.85rem;
    text-align: center;
}

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

.data-table th, .data-table td {
    padding: 10px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.85rem;
}

.data-table th {
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

@media (max-width: 900px) {
    .calendar-layout-row {
        grid-template-columns: 1fr;
    }
}