/* =====================================================
   EXPENSE TRACKER MY - FULL WEBSITE STYLES
   Responsive design: Desktop-first with mobile support
   ===================================================== */

/* CSS Variables */
:root {
    /* Colors - Dark Theme */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-card: rgba(30, 41, 59, 0.95);
    --bg-glass: rgba(30, 41, 59, 0.8);
    --bg-sidebar: rgba(15, 23, 42, 0.98);

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

    /* Accent Colors */
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);

    /* Status Colors */
    --color-income: #22c55e;
    --color-income-bg: rgba(34, 197, 94, 0.15);
    --color-expense: #ef4444;
    --color-expense-bg: rgba(239, 68, 68, 0.15);
    --color-balance: #3b82f6;
    --color-balance-bg: rgba(59, 130, 246, 0.15);

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 30px rgba(99, 102, 241, 0.25);
    --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);

    /* Border */
    --border-color: rgba(148, 163, 184, 0.1);
    --border-radius: 16px;
    --border-radius-sm: 8px;
    --border-radius-lg: 24px;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;

    /* Layout */
    --sidebar-width: 280px;
    --header-height: 72px;

    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-size-xs: 12px;
    --font-size-sm: 14px;
    --font-size-base: 16px;
    --font-size-lg: 18px;
    --font-size-xl: 20px;
    --font-size-2xl: 24px;
    --font-size-3xl: 32px;
    --font-size-4xl: 40px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

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

html {
    font-size: 16px;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* =====================================================
   LOADING OVERLAY
   ===================================================== */
.loading-overlay {
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: var(--bg-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--space-md);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.loading-overlay.active {
    opacity: 1;
    visibility: visible;
}

.loading-spinner {
    width: 56px;
    height: 56px;
    border: 4px solid var(--bg-tertiary);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

.loading-overlay p {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
}

/* =====================================================
   APP LAYOUT
   ===================================================== */
.app-layout {
    display: flex;
    min-height: 100vh;
}

/* =====================================================
   SIDEBAR
   ===================================================== */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: transform var(--transition-base);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--accent-primary);
}

.logo-text {
    font-size: var(--font-size-xl);
    font-weight: 700;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.btn-close-sidebar {
    display: none;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--space-sm);
    border-radius: var(--border-radius-sm);
}

.btn-close-sidebar:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.sidebar-nav {
    flex: 1;
    padding: var(--space-md);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-base);
    font-weight: 500;
    transition: all var(--transition-fast);
}

.nav-link svg {
    width: 22px;
    height: 22px;
}

.nav-link:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

.nav-link.active {
    background: var(--accent-gradient);
    color: white;
}

.sidebar-footer {
    padding: var(--space-md);
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin-bottom: var(--space-sm);
}

.user-info svg {
    width: 20px;
    height: 20px;
    color: var(--color-primary);
}

.btn-add-transaction {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--border-radius-sm);
    color: white;
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.btn-add-transaction svg {
    width: 20px;
    height: 20px;
}

/* Sidebar Overlay */
.sidebar-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 99;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.sidebar-overlay.active {
    opacity: 1;
    visibility: visible;
}

/* =====================================================
   MAIN CONTENT
   ===================================================== */
.main-wrapper {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* =====================================================
   TOP HEADER
   ===================================================== */
.top-header {
    position: sticky;
    top: 0;
    z-index: 50;
    height: var(--header-height);
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 var(--space-xl);
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.btn-menu {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: var(--space-sm);
    border-radius: var(--border-radius-sm);
}

.btn-menu svg {
    width: 24px;
    height: 24px;
}

.btn-menu:hover {
    background: var(--bg-tertiary);
}

.page-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.header-right {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.period-selector {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: var(--bg-tertiary);
    padding: var(--space-sm);
    border-radius: var(--border-radius);
}

.btn-period-nav {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.btn-period-nav svg {
    width: 18px;
    height: 18px;
}

.btn-period-nav:hover {
    background: var(--accent-primary);
}

.period-label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-primary);
    min-width: 160px;
    text-align: center;
}

.btn-icon-header {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.btn-icon-header svg {
    width: 20px;
    height: 20px;
}

.btn-icon-header:hover {
    background: var(--accent-primary);
    color: white;
}

/* =====================================================
   VIEW CONTENT
   ===================================================== */
.view-content {
    display: none;
    padding: var(--space-xl);
    flex-direction: column;
    gap: var(--space-xl);
}

.view-content.active {
    display: flex;
}

.view-header-bar {
    margin-bottom: var(--space-md);
}

.view-header-bar h2 {
    font-size: var(--font-size-2xl);
    font-weight: 600;
}

/* =====================================================
   SUMMARY CARDS
   ===================================================== */
.summary-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
}

.summary-card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    padding: var(--space-xl);
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    backdrop-filter: blur(10px);
    transition: all var(--transition-fast);
}

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

.card-icon-wrapper {
    width: 56px;
    height: 56px;
    border-radius: var(--border-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.card-icon-wrapper.income {
    background: var(--color-income-bg);
    color: var(--color-income);
}

.card-icon-wrapper.expense {
    background: var(--color-expense-bg);
    color: var(--color-expense);
}

.card-icon-wrapper.balance {
    background: var(--color-balance-bg);
    color: var(--color-balance);
}

.card-info {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

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

.card-value {
    font-size: var(--font-size-2xl);
    font-weight: 700;
}

.summary-card.income .card-value {
    color: var(--color-income);
}

.summary-card.expense .card-value {
    color: var(--color-expense);
}

.summary-card.balance .card-value {
    color: var(--color-balance);
}

/* =====================================================
   DASHBOARD GRID
   ===================================================== */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
}

.dashboard-left,
.dashboard-right {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
}

/* =====================================================
   CARDS
   ===================================================== */
.card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
    overflow: hidden;
}

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

.card-header h2 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.header-icon {
    width: 20px;
    height: 20px;
    color: var(--accent-primary);
}

.btn-text {
    background: none;
    border: none;
    color: var(--accent-primary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-text:hover {
    color: var(--accent-secondary);
}

.card-body {
    padding: var(--space-lg);
}

/* =====================================================
   CHARTS
   ===================================================== */
.chart-container {
    height: 280px;
    position: relative;
}

.chart-container.chart-bar {
    height: 220px;
}

/* =====================================================
   TRANSACTIONS LIST
   ===================================================== */
.transactions-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.transaction-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.transaction-item:hover {
    background: var(--bg-tertiary);
    transform: translateX(4px);
}

.transaction-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.transaction-details {
    flex: 1;
    min-width: 0;
}

.transaction-category {
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.transaction-date {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.transaction-amount {
    font-size: var(--font-size-lg);
    font-weight: 600;
    text-align: right;
}

.transaction-amount.expense {
    color: var(--color-expense);
}

.transaction-amount.income {
    color: var(--color-income);
}

/* =====================================================
   CATEGORY LIST
   ===================================================== */
.category-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.category-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
}

.category-icon {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.category-info {
    flex: 1;
}

.category-name {
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.category-bar {
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    margin-top: 6px;
    overflow: hidden;
}

.category-bar-fill {
    height: 100%;
    border-radius: 3px;
    transition: width var(--transition-base);
}

.category-amount {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--text-secondary);
}

/* =====================================================
   YTD CARD
   ===================================================== */
.ytd-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
}

.ytd-item {
    padding: var(--space-md);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.ytd-label {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    text-transform: uppercase;
}

.ytd-value {
    font-size: var(--font-size-lg);
    font-weight: 700;
}

.ytd-value.income {
    color: var(--color-income);
}

.ytd-value.expense {
    color: var(--color-expense);
}

/* =====================================================
   YEARLY STATS
   ===================================================== */
.yearly-stats {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.stat-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-md);
}

.stat-item {
    padding: var(--space-lg);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.stat-item.full {
    grid-column: 1 / -1;
}

.stat-label {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

.stat-value {
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.stat-value.income {
    color: var(--color-income);
}

.stat-value.expense {
    color: var(--color-expense);
}

/* =====================================================
   CATEGORY BREAKDOWN
   ===================================================== */
.category-breakdown {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.category-breakdown-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) 0;
}

.category-breakdown-icon {
    width: 36px;
    height: 36px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.category-breakdown-icon svg {
    width: 18px;
    height: 18px;
}

.category-breakdown-info {
    flex: 1;
}

.category-breakdown-name {
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.category-breakdown-bar {
    height: 4px;
    background: var(--bg-tertiary);
    border-radius: 2px;
    margin-top: 4px;
    overflow: hidden;
}

.category-breakdown-fill {
    height: 100%;
    border-radius: 2px;
}

.category-breakdown-amount {
    text-align: right;
}

.category-breakdown-amount .category-breakdown-percent {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* =====================================================
   TOP EXPENSES
   ===================================================== */
.top-expenses-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
}

.top-expense-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
}

.top-expense-rank {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--bg-tertiary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.top-expense-info {
    flex: 1;
}

.top-expense-name {
    font-size: var(--font-size-sm);
    font-weight: 500;
}

.top-expense-date {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.top-expense-amount {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-expense);
}

/* =====================================================
   FLOATING ACTION BUTTON
   ===================================================== */
.fab {
    display: none;
    position: fixed;
    bottom: var(--space-xl);
    right: var(--space-xl);
    width: 64px;
    height: 64px;
    border-radius: 50%;
    border: none;
    background: var(--accent-gradient);
    color: white;
    cursor: pointer;
    box-shadow: var(--shadow-glow), var(--shadow-lg);
    z-index: 50;
    transition: all var(--transition-fast);
}

.fab svg {
    width: 28px;
    height: 28px;
}

.fab:hover {
    transform: scale(1.1);
}

.fab:active {
    transform: scale(0.95);
}

/* =====================================================
   MODALS
   ===================================================== */
.modal {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
}

.modal-content {
    position: relative;
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    transform: scale(0.9) translateY(20px);
    transition: transform var(--transition-base);
    overflow: hidden;
}

.modal.active .modal-content {
    transform: scale(1) translateY(0);
}

.modal-content.modal-lg {
    max-width: 640px;
}

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

.modal-header h2 {
    font-size: var(--font-size-xl);
    font-weight: 600;
}

.btn-close {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.btn-close svg {
    width: 18px;
    height: 18px;
}

.btn-close:hover {
    background: var(--color-expense);
    color: white;
}

.modal-body {
    padding: var(--space-lg);
    max-height: calc(90vh - 80px);
    overflow-y: auto;
}

/* =====================================================
   FORMS
   ===================================================== */
.type-tabs {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.type-tab {
    flex: 1;
    padding: var(--space-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.type-tab[data-type="expense"].active {
    background: var(--color-expense);
    border-color: var(--color-expense);
}

.type-tab[data-type="income"].active {
    background: var(--color-income);
    border-color: var(--color-income);
}

.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    font-family: inherit;
    transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.form-group input[type="color"] {
    height: 48px;
    padding: var(--space-xs);
    cursor: pointer;
}

.form-actions {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-xl);
}

.btn-primary {
    flex: 1;
    padding: var(--space-md);
    background: var(--accent-gradient);
    border: none;
    border-radius: var(--border-radius-sm);
    color: white;
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.btn-secondary {
    width: 100%;
    padding: var(--space-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-size: var(--font-size-base);
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    transition: all var(--transition-fast);
    margin-bottom: var(--space-sm);
}

.btn-secondary:hover {
    background: var(--bg-secondary);
}

.btn-secondary svg {
    width: 18px;
    height: 18px;
}

.btn-danger {
    padding: var(--space-md);
    background: var(--color-expense-bg);
    border: 1px solid var(--color-expense);
    border-radius: var(--border-radius-sm);
    color: var(--color-expense);
    font-size: var(--font-size-base);
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    transition: all var(--transition-fast);
}

.btn-danger:hover {
    background: var(--color-expense);
    color: white;
}

.btn-danger svg {
    width: 18px;
    height: 18px;
}

.btn-icon-left {
    width: 16px;
    height: 16px;
    margin-right: 4px;
}

/* =====================================================
   SETTINGS
   ===================================================== */
.settings-group {
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-xl);
    border-bottom: 1px solid var(--border-color);
}

.settings-group:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.settings-group h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.app-info {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* =====================================================
   CATEGORY MANAGEMENT
   ===================================================== */
.category-tabs {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.category-tab {
    flex: 1;
    padding: var(--space-md);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.category-manage-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    max-height: 400px;
    overflow-y: auto;
}

.category-manage-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md);
    background: var(--bg-tertiary);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.category-manage-item:hover {
    background: var(--bg-secondary);
}

.category-manage-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.category-manage-icon svg {
    width: 20px;
    height: 20px;
}

.category-manage-info {
    flex: 1;
}

.category-manage-name {
    font-size: var(--font-size-base);
    font-weight: 500;
}

.category-manage-edit {
    padding: var(--space-sm) var(--space-md);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.category-manage-edit:hover {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
}

/* =====================================================
   EMPTY STATE
   ===================================================== */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-2xl);
    text-align: center;
}

.empty-state-icon {
    width: 64px;
    height: 64px;
    margin-bottom: var(--space-md);
}

.empty-state-icon svg {
    width: 100%;
    height: 100%;
    color: var(--text-muted);
    opacity: 0.5;
}

.empty-state-text {
    font-size: var(--font-size-base);
    color: var(--text-muted);
}

/* =====================================================
   TOAST NOTIFICATIONS
   ===================================================== */
.toast {
    position: fixed;
    bottom: var(--space-xl);
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--space-md) var(--space-xl);
    font-size: var(--font-size-base);
    font-weight: 500;
    z-index: 300;
    opacity: 0;
    transition: all var(--transition-base);
}

.toast.show {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.toast.success {
    border-color: var(--color-income);
    color: var(--color-income);
}

.toast.error {
    border-color: var(--color-expense);
    color: var(--color-expense);
}

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

.cat-icon {
    width: 20px;
    height: 20px;
}

/* =====================================================
   RESPONSIVE - TABLET
   ===================================================== */
@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }

    .summary-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .view-content {
        padding: var(--space-lg);
    }
}

/* =====================================================
   RESPONSIVE - MOBILE
   ===================================================== */
@media (max-width: 768px) {
    :root {
        --sidebar-width: 280px;
        --header-height: 64px;
    }

    /* Hide sidebar by default on mobile */
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .btn-close-sidebar {
        display: flex;
    }

    .sidebar-overlay {
        display: block;
    }

    /* Main wrapper takes full width */
    .main-wrapper {
        margin-left: 0;
    }

    /* Show hamburger menu */
    .btn-menu {
        display: flex;
    }

    /* Adjust header */
    .top-header {
        padding: 0 var(--space-md);
        flex-wrap: wrap;
        height: auto;
        padding-top: var(--space-md);
        padding-bottom: var(--space-md);
        gap: var(--space-md);
    }

    .header-left {
        width: 100%;
        order: 1;
    }

    .header-right {
        width: 100%;
        order: 2;
        justify-content: space-between;
    }

    .period-selector {
        flex: 1;
    }

    .period-label {
        min-width: auto;
        font-size: var(--font-size-xs);
    }

    /* Hide desktop settings in header */
    #btn-settings,
    #btn-export {
        display: none;
    }

    /* Summary cards stack on mobile */
    .summary-grid {
        grid-template-columns: 1fr;
        gap: var(--space-md);
    }

    .summary-card {
        padding: var(--space-lg);
    }

    .card-value {
        font-size: var(--font-size-xl);
    }

    /* View content padding */
    .view-content {
        padding: var(--space-md);
        gap: var(--space-lg);
    }

    /* Card adjustments */
    .card-header {
        padding: var(--space-md);
    }

    .card-body {
        padding: var(--space-md);
    }

    /* Charts smaller */
    .chart-container {
        height: 220px;
    }

    .chart-container.chart-bar {
        height: 180px;
    }

    /* YTD grid */
    .ytd-grid {
        grid-template-columns: 1fr;
    }

    /* Stats */
    .stat-row {
        grid-template-columns: 1fr;
    }

    /* Show FAB */
    .fab {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    /* Modal full screen on mobile */
    .modal-content {
        max-width: 100%;
        max-height: 100%;
        border-radius: 0;
        height: 100%;
    }

    .modal-body {
        max-height: calc(100vh - 80px);
    }

    /* Toast above FAB */
    .toast {
        bottom: calc(var(--space-xl) + 80px);
    }
}

/* =====================================================
   RESPONSIVE - SMALL MOBILE
   ===================================================== */
@media (max-width: 375px) {
    .logo-text {
        font-size: var(--font-size-lg);
    }

    .page-title {
        font-size: var(--font-size-lg);
    }

    .card-icon-wrapper {
        width: 48px;
        height: 48px;
    }

    .card-icon-wrapper svg {
        width: 24px;
        height: 24px;
    }
}