/* ===== CSS VARIABLES ===== */
:root {
    /* Color Palette - Modern Financial App */
    --primary-color: #2563eb;        /* Blue 600 - Trust, stability */
    --primary-hover: #1d4ed8;       /* Blue 700 */
    --primary-light: #dbeafe;       /* Blue 100 */
    --primary-50: #eff6ff;          /* Blue 50 */
    
    --secondary-color: #64748b;     /* Slate 500 - Professional */
    --secondary-hover: #475569;    /* Slate 600 */
    
    --success-color: #059669;       /* Emerald 600 - Growth, money */
    --success-light: #d1fae5;      /* Emerald 100 */
    
    --danger-color: #dc2626;        /* Red 600 - Expenses, alerts */
    --danger-light: #fee2e2;       /* Red 100 */
    
    --warning-color: #d97706;       /* Amber 600 - Warnings */
    --warning-light: #fef3c7;      /* Amber 100 */
    
    --neutral-50: #f8fafc;
    --neutral-100: #f1f5f9;
    --neutral-200: #e2e8f0;
    --neutral-300: #cbd5e1;
    --neutral-400: #94a3b8;
    --neutral-500: #64748b;
    --neutral-600: #475569;
    --neutral-700: #334155;
    --neutral-800: #1e293b;
    --neutral-900: #0f172a;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    
    /* Spacing */
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Shadows */
    --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);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

/* ===== DARK MODE VARIABLES ===== */
[data-theme="dark"] {
    /* Color Palette - Dark Mode */
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --primary-light: #1e3a8a;
    --primary-50: #172554;
    
    --secondary-color: #94a3b8;
    --secondary-hover: #cbd5e1;
    
    --success-color: #10b981;
    --success-light: #064e3b;
    
    --danger-color: #ef4444;
    --danger-light: #7f1d1d;
    
    --warning-color: #f59e0b;
    --warning-light: #78350f;
    
    /* Neutrals inverted for dark mode */
    --neutral-50: #0f172a;
    --neutral-100: #1e293b;
    --neutral-200: #334155;
    --neutral-300: #475569;
    --neutral-400: #64748b;
    --neutral-500: #94a3b8;
    --neutral-600: #cbd5e1;
    --neutral-700: #e2e8f0;
    --neutral-800: #f1f5f9;
    --neutral-900: #f8fafc;
    
    /* Shadows for dark mode */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.3);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3), 0 2px 4px -2px rgb(0 0 0 / 0.3);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.3), 0 4px 6px -4px rgb(0 0 0 / 0.3);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.4), 0 8px 10px -6px rgb(0 0 0 / 0.4);
}

/* ===== RESET & BASE STYLES ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--neutral-800);
    background-color: var(--neutral-50);
    overflow-x: hidden;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Smooth transitions for theme changes */
*,
*::before,
*::after {
    transition-property: background-color, border-color, color, fill, stroke;
    transition-duration: var(--transition-normal);
    transition-timing-function: ease-in-out;
}

/* ===== LOADING SCREEN ===== */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-hover));
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

.loading-spinner {
    text-align: center;
    color: white;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--spacing-4);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* ===== APP CONTAINER ===== */
.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ===== HEADER ===== */
.header {
    background: var(--neutral-100);
    border-bottom: 1px solid var(--neutral-200);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-4) var(--spacing-6);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    color: var(--primary-color);
    font-weight: 700;
    font-size: var(--font-size-xl);
}

.logo i {
    font-size: var(--font-size-2xl);
}

.user-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

/* Dark Mode Toggle */
.theme-toggle {
    background: var(--neutral-200);
    border: none;
    padding: var(--spacing-2);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    font-size: var(--font-size-lg);
    color: var(--neutral-700);
}

.theme-toggle:hover {
    background: var(--neutral-300);
    transform: scale(1.05);
}

.theme-toggle i {
    transition: transform var(--transition-normal);
}

.theme-toggle:active i {
    transform: rotate(180deg);
}

.btn-logout {
    background: var(--danger-color);
    color: white;
    border: none;
    padding: var(--spacing-2) var(--spacing-3);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.btn-logout:hover {
    background: #b91c1c;
}

/* ===== AUTH SCREEN ===== */
.auth-screen {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-light), var(--neutral-50));
    padding: var(--spacing-6);
}

.auth-container {
    background: var(--neutral-100);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    padding: var(--spacing-8);
    width: 100%;
    max-width: 400px;
}

.auth-tabs {
    display: flex;
    margin-bottom: var(--spacing-6);
    border-bottom: 1px solid var(--neutral-200);
}

.tab-btn {
    flex: 1;
    padding: var(--spacing-3) var(--spacing-4);
    border: none;
    background: none;
    cursor: pointer;
    font-weight: 500;
    color: var(--neutral-500);
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
}

.tab-btn.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

.auth-form {
    display: none;
}

.auth-form.active {
    display: block;
}

.form-group {
    margin-bottom: var(--spacing-5);
}

.form-group label {
    display: block;
    margin-bottom: var(--spacing-2);
    font-weight: 500;
    color: var(--neutral-700);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    border: 2px solid var(--neutral-300);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    transition: all 0.3s ease;
    background-color: var(--neutral-50);
    color: var(--neutral-900);
}

.form-group select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    padding-right: 40px;
    cursor: pointer;
    font-weight: 500;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    
    /* Background separado */
    background-color: var(--neutral-50);
    background-image: 
        linear-gradient(to bottom, var(--neutral-50), var(--neutral-100)),
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='%23666' d='M4.427 6.427l3.396 3.396a.25.25 0 00.354 0l3.396-3.396A.25.25 0 0011.396 6H4.604a.25.25 0 00-.177.427z'/%3E%3C/svg%3E");
    background-repeat: no-repeat, no-repeat;
    background-position: 0 0, right 12px center;
    background-size: 100% 100%, 16px;
}

/* Remove seta nativa do IE nos formulários */
.form-group select::-ms-expand {
    display: none;
}

.form-group select:hover {
    border-color: var(--primary-color);
    background-color: var(--neutral-100);
    background-image: 
        linear-gradient(to bottom, var(--neutral-50), var(--neutral-100)),
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='%23666' d='M4.427 6.427l3.396 3.396a.25.25 0 00.354 0l3.396-3.396A.25.25 0 0011.396 6H4.604a.25.25 0 00-.177.427z'/%3E%3C/svg%3E");
    background-repeat: no-repeat, no-repeat;
    background-position: 0 0, right 12px center;
    background-size: 100% 100%, 16px;
    box-shadow: 0 2px 8px rgba(74, 85, 254, 0.1);
    transform: translateY(-1px);
}

.form-group input[type="date"],
.form-group input[type="time"],
.form-group input[type="datetime-local"] {
    color-scheme: light dark;
}

[data-theme="dark"] .form-group input[type="date"],
[data-theme="dark"] .form-group input[type="time"],
[data-theme="dark"] .form-group input[type="datetime-local"] {
    color-scheme: dark;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--neutral-50);
    box-shadow: 0 0 0 3px rgba(74, 85, 254, 0.1), 0 2px 8px rgba(74, 85, 254, 0.15);
}

.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    background-color: var(--neutral-50);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='%23666' d='M4.427 6.427l3.396 3.396a.25.25 0 00.354 0l3.396-3.396A.25.25 0 0011.396 6H4.604a.25.25 0 00-.177.427z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    box-shadow: 0 0 0 3px rgba(74, 85, 254, 0.1), 0 2px 8px rgba(74, 85, 254, 0.15);
}

.form-group select:active {
    transform: translateY(0);
}

/* Form Divider */
.form-divider {
    display: flex;
    align-items: center;
    margin: var(--spacing-6) 0;
    gap: var(--spacing-3);
}

.form-divider hr {
    flex: 1;
    border: none;
    border-top: 1px solid var(--neutral-300);
}

.form-divider span {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--neutral-500);
    white-space: nowrap;
}

/* New Category Field Highlight */
#new-category-field {
    padding: var(--spacing-4);
    background: var(--primary-50);
    border: 2px dashed var(--primary-color);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-3);
    animation: slideDown 0.3s ease-out;
}

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

#new-category-field .form-group {
    margin-bottom: 0;
}

/* Checkbox Group */
.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
    max-height: 200px;
    overflow-y: auto;
    padding: var(--spacing-3);
    border: 1px solid var(--neutral-300);
    border-radius: var(--radius-md);
    background: var(--neutral-50);
}

.checkbox-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
}

.checkbox-item input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.checkbox-item label {
    margin: 0;
    cursor: pointer;
    user-select: none;
    color: var(--neutral-800);
    font-weight: 400;
}

.checkbox-item:hover {
    background: var(--neutral-100);
    padding: var(--spacing-2);
    margin: calc(var(--spacing-2) * -1);
    border-radius: var(--radius-sm);
}

/* ===== BUTTONS ===== */
.btn-primary {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: var(--radius-md);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-base);
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--neutral-100);
    color: var(--neutral-900);
    border: 1px solid var(--neutral-300);
    padding: var(--spacing-3) var(--spacing-6);
    border-radius: var(--radius-md);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-base);
}

.btn-secondary:hover {
    background: var(--neutral-50);
    border-color: var(--neutral-400);
}

.btn-link {
    background: none;
    border: none;
    color: var(--primary-color);
    cursor: pointer;
    padding: var(--spacing-2) 0;
    font-size: var(--font-size-sm);
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    transition: all var(--transition-normal);
}

.btn-link:hover {
    color: var(--primary-600);
    text-decoration: underline;
}

.btn-link i {
    font-size: 14px;
}

/* ===== DASHBOARD ===== */
.dashboard {
    flex: 1;
    display: flex;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

/* ===== SIDEBAR ===== */
.sidebar {
    width: 250px;
    background: var(--neutral-100);
    border-right: 1px solid var(--neutral-200);
    padding: var(--spacing-6) 0;
    position: sticky;
    top: 80px;
    height: calc(100vh - 80px);
    overflow-y: auto;
}

.nav-menu {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-1);
    padding: 0 var(--spacing-4);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    color: var(--neutral-600);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    font-weight: 500;
}

.nav-item:hover {
    background: var(--neutral-100);
    color: var(--primary-color);
}

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

.nav-item i {
    width: 20px;
    text-align: center;
}

/* ===== MAIN CONTENT ===== */
.main-content {
    flex: 1;
    padding: var(--spacing-6);
    background: var(--neutral-50);
}

.content-section {
    display: none;
}

.content-section.active {
    display: block;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-6);
}

.section-header h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--neutral-900);
}

/* ===== SUMMARY CARDS ===== */
.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-8);
}

.summary-card {
    background: var(--neutral-100);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--neutral-200);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.summary-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.summary-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
}

.summary-card.income::before {
    background: var(--success-color);
}

.summary-card.expense::before {
    background: var(--danger-color);
}

.summary-card.balance::before {
    background: var(--primary-color);
}

.summary-card.accounts::before {
    background: var(--warning-color);
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-4);
    font-size: var(--font-size-xl);
}

.summary-card.income .card-icon {
    background: var(--success-light);
    color: var(--success-color);
}

.summary-card.expense .card-icon {
    background: var(--danger-light);
    color: var(--danger-color);
}

.summary-card.balance .card-icon {
    background: var(--primary-light);
    color: var(--primary-color);
}

.summary-card.accounts .card-icon {
    background: var(--warning-light);
    color: var(--warning-color);
}

.card-content h3 {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--neutral-600);
    margin-bottom: var(--spacing-2);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.card-content .amount {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--neutral-900);
}

/* ===== DASHBOARD GRID ===== */
.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-6);
}

.chart-container,
.recent-transactions {
    background: var(--neutral-100);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--neutral-200);
}

.chart-container h3,
.recent-transactions h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--neutral-900);
    margin-bottom: var(--spacing-4);
}

/* Category Chart Bars */
.category-bars {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
    max-height: 400px;
    overflow-y: auto;
}

.category-bar-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
}

.category-bar-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-sm);
}

.category-name {
    font-weight: 500;
    color: var(--neutral-700);
}

.category-value {
    font-weight: 600;
    color: var(--neutral-900);
}

.category-bar-track {
    height: 24px;
    background: var(--neutral-100);
    border-radius: var(--radius-md);
    overflow: hidden;
    position: relative;
}

.category-bar-fill {
    height: 100%;
    border-radius: var(--radius-md);
    transition: width 0.5s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    padding-right: var(--spacing-2);
    min-width: 2%;
}

.no-data {
    text-align: center;
    color: var(--neutral-500);
    padding: var(--spacing-8);
    font-size: var(--font-size-base);
}

/* ===== TRANSACTIONS ===== */
.transactions-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.transaction-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4);
    background: var(--neutral-50);
    border-radius: var(--radius-md);
    border: 1px solid var(--neutral-200);
    transition: all var(--transition-fast);
}

.transaction-item:hover {
    background: var(--neutral-100);
    box-shadow: var(--shadow-sm);
}

.transaction-info {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.transaction-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: var(--font-size-sm);
    font-weight: 600;
}

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

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

.transaction-details h4 {
    font-size: var(--font-size-base);
    font-weight: 500;
    color: var(--neutral-900);
    margin-bottom: var(--spacing-1);
}

.transaction-details p {
    font-size: var(--font-size-sm);
    color: var(--neutral-500);
}

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

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

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

/* ===== DROPDOWNS/SELECTS (Modernos e Bonitos) ===== */
select {
    /* Remove aparência nativa */
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    
    /* Estrutura */
    padding: 12px 40px 12px 16px;
    border: 2px solid var(--neutral-300);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--neutral-900);
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    
    /* Background separado em propriedades específicas */
    background-color: var(--neutral-50);
    background-image: 
        linear-gradient(to bottom, var(--neutral-50), var(--neutral-100)),
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='%23666' d='M4.427 6.427l3.396 3.396a.25.25 0 00.354 0l3.396-3.396A.25.25 0 0011.396 6H4.604a.25.25 0 00-.177.427z'/%3E%3C/svg%3E");
    background-repeat: no-repeat, no-repeat;
    background-position: 0 0, right 12px center;
    background-size: 100% 100%, 16px;
    
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

/* Remove seta nativa do IE */
select::-ms-expand {
    display: none;
}

select:hover {
    border-color: var(--primary-color);
    background-color: var(--neutral-100);
    background-image: 
        linear-gradient(to bottom, var(--neutral-50), var(--neutral-100)),
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='%23666' d='M4.427 6.427l3.396 3.396a.25.25 0 00.354 0l3.396-3.396A.25.25 0 0011.396 6H4.604a.25.25 0 00-.177.427z'/%3E%3C/svg%3E");
    background-repeat: no-repeat, no-repeat;
    background-position: 0 0, right 12px center;
    background-size: 100% 100%, 16px;
    box-shadow: 0 2px 8px rgba(74, 85, 254, 0.1);
    transform: translateY(-1px);
}

select:focus {
    outline: none;
    border-color: var(--primary-color);
    background-color: var(--neutral-50);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='%23666' d='M4.427 6.427l3.396 3.396a.25.25 0 00.354 0l3.396-3.396A.25.25 0 0011.396 6H4.604a.25.25 0 00-.177.427z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    box-shadow: 0 0 0 3px rgba(74, 85, 254, 0.1), 0 2px 8px rgba(74, 85, 254, 0.15);
}

select:active {
    transform: translateY(0);
}

select:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    background-color: var(--neutral-200);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='%23999' d='M4.427 6.427l3.396 3.396a.25.25 0 00.354 0l3.396-3.396A.25.25 0 0011.396 6H4.604a.25.25 0 00-.177.427z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    border-color: var(--neutral-200);
}

select:disabled:hover {
    transform: none;
    border-color: var(--neutral-200);
    background-color: var(--neutral-200);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
}

/* Estilização das opções (quando suportado) */
select option {
    padding: 10px;
    background: var(--neutral-50);
    color: var(--neutral-900);
    font-weight: 500;
}

select option:hover {
    background: var(--primary-light);
}

select option:checked {
    background: var(--primary-color);
    color: white;
}

/* Dropdown com ícone especial para período */
#period-select,
#report-period {
    border-color: var(--primary-color);
    background-color: var(--neutral-50);
    background-image: 
        linear-gradient(to bottom, var(--neutral-50), var(--neutral-100)),
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='%234A55FE' d='M4.427 6.427l3.396 3.396a.25.25 0 00.354 0l3.396-3.396A.25.25 0 0011.396 6H4.604a.25.25 0 00-.177.427z'/%3E%3C/svg%3E");
    background-repeat: no-repeat, no-repeat;
    background-position: 0 0, right 12px center;
    background-size: 100% 100%, 16px;
    font-weight: 600;
}

#period-select:hover,
#report-period:hover {
    background-color: var(--neutral-100);
    background-image: 
        linear-gradient(to bottom, var(--neutral-50), var(--neutral-100)),
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='%234A55FE' d='M4.427 6.427l3.396 3.396a.25.25 0 00.354 0l3.396-3.396A.25.25 0 0011.396 6H4.604a.25.25 0 00-.177.427z'/%3E%3C/svg%3E");
    background-repeat: no-repeat, no-repeat;
    background-position: 0 0, right 12px center;
    background-size: 100% 100%, 16px;
    box-shadow: 0 4px 12px rgba(74, 85, 254, 0.15);
}

#period-select:focus,
#report-period:focus {
    background-color: var(--neutral-50);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='%234A55FE' d='M4.427 6.427l3.396 3.396a.25.25 0 00.354 0l3.396-3.396A.25.25 0 0011.396 6H4.604a.25.25 0 00-.177.427z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
}

/* Dropdown de exportação com cor especial */
#export-format {
    border-color: var(--success-color);
    background-color: var(--neutral-50);
    background-image: 
        linear-gradient(to bottom, var(--neutral-50), var(--neutral-100)),
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='%2310b981' d='M4.427 6.427l3.396 3.396a.25.25 0 00.354 0l3.396-3.396A.25.25 0 0011.396 6H4.604a.25.25 0 00-.177.427z'/%3E%3C/svg%3E");
    background-repeat: no-repeat, no-repeat;
    background-position: 0 0, right 12px center;
    background-size: 100% 100%, 16px;
}

#export-format:hover {
    border-color: var(--success-color);
    background-color: var(--neutral-100);
    background-image: 
        linear-gradient(to bottom, var(--neutral-50), var(--neutral-100)),
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='%2310b981' d='M4.427 6.427l3.396 3.396a.25.25 0 00.354 0l3.396-3.396A.25.25 0 0011.396 6H4.604a.25.25 0 00-.177.427z'/%3E%3C/svg%3E");
    background-repeat: no-repeat, no-repeat;
    background-position: 0 0, right 12px center;
    background-size: 100% 100%, 16px;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.15);
}

#export-format:focus {
    background-color: var(--neutral-50);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16'%3E%3Cpath fill='%2310b981' d='M4.427 6.427l3.396 3.396a.25.25 0 00.354 0l3.396-3.396A.25.25 0 0011.396 6H4.604a.25.25 0 00-.177.427z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
}

/* Dropdowns de filtro */
#category-filter,
#tag-filter {
    min-width: 200px;
}

/* ===== FILTERS ===== */
.filters {
    display: flex;
    gap: var(--spacing-4);
    margin-bottom: var(--spacing-6);
    align-items: center;
    flex-wrap: wrap;
}

.filters select,
.filters input[type="date"] {
    padding: 12px 16px;
    border: 2px solid var(--neutral-300);
    border-radius: var(--radius-lg);
    font-size: var(--font-size-sm);
    transition: all 0.3s ease;
    background-color: var(--neutral-50);
    color: var(--neutral-900);
}

.filters input[type="date"] {
    cursor: pointer;
    font-weight: 500;
    background: linear-gradient(to bottom, var(--neutral-50), var(--neutral-100));
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
    color-scheme: light dark;
}

[data-theme="dark"] .filters input[type="date"] {
    color-scheme: dark;
}

.filters input[type="date"]:hover {
    border-color: var(--primary-color);
    background: linear-gradient(to bottom, var(--neutral-50), var(--neutral-100));
    box-shadow: 0 2px 8px rgba(74, 85, 254, 0.1);
}

.filters input[type="date"]:focus {
    outline: none;
    border-color: var(--primary-color);
    background: var(--neutral-50);
    box-shadow: 0 0 0 3px rgba(74, 85, 254, 0.1), 0 2px 8px rgba(74, 85, 254, 0.15);
}

/* ===== GRIDS ===== */
.categories-grid,
.accounts-grid,
.budgets-grid,
.tags-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-6);
}

.category-card,
.account-card,
.budget-card,
.tag-card {
    background: var(--neutral-100);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--neutral-200);
    transition: all var(--transition-normal);
}

.category-card:hover,
.account-card:hover,
.budget-card:hover,
.tag-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

/* ===== MODAL ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-normal);
}

[data-theme="dark"] .modal-overlay {
    background: rgba(0, 0, 0, 0.8);
}

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

.modal {
    background: var(--neutral-100);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    width: 90%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.9);
    transition: transform var(--transition-normal);
}

.modal-overlay.active .modal {
    transform: scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-6);
    border-bottom: 1px solid var(--neutral-200);
}

.modal-header h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--neutral-900);
}

.modal-close {
    background: none;
    border: none;
    font-size: var(--font-size-xl);
    cursor: pointer;
    color: var(--neutral-500);
    padding: var(--spacing-2);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: var(--neutral-100);
    color: var(--neutral-700);
}

.modal-body {
    padding: var(--spacing-6);
}

/* ===== TOAST NOTIFICATIONS ===== */
.toast-container {
    position: fixed;
    top: var(--spacing-6);
    right: var(--spacing-6);
    z-index: 1001;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.toast {
    background: var(--neutral-100);
    border-radius: var(--radius-md);
    padding: var(--spacing-4);
    box-shadow: var(--shadow-lg);
    border-left: 4px solid;
    min-width: 300px;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
}

.toast.show {
    transform: translateX(0);
}

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

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

.toast.warning {
    border-left-color: var(--warning-color);
}

.toast.info {
    border-left-color: var(--primary-color);
}

/* ===== TAGS ===== */
.tag-header {
    margin-bottom: var(--spacing-4);
}

.tag-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    border-radius: var(--radius-full);
    color: white;
    font-size: var(--font-size-sm);
    font-weight: 600;
    box-shadow: var(--shadow-sm);
}

.tag-badge-small {
    display: inline-flex;
    align-items: center;
    padding: 4px 10px;
    border-radius: var(--radius-full);
    color: white;
    font-size: 12px;
    font-weight: 500;
    margin-right: 6px;
    margin-top: 4px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.2);
}

.transaction-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
    margin-top: 8px;
}

/* Transaction Observations */
.transaction-observations {
    margin-top: 8px;
    padding: 8px;
    background-color: var(--neutral-50);
    border-radius: 6px;
    border-left: 3px solid var(--primary-500);
}

.transaction-observations strong {
    color: var(--neutral-700);
    font-size: 0.875rem;
}

.transaction-observations ul {
    margin: 4px 0 0 0;
    padding-left: 16px;
}

.transaction-observations li {
    color: var(--neutral-600);
    font-size: 0.8rem;
    margin-bottom: 2px;
}

.color-picker {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
}

.color-picker input[type="color"] {
    width: 60px;
    height: 40px;
    border: 1px solid var(--neutral-300);
    border-radius: var(--radius-md);
    cursor: pointer;
}

#color-preview {
    width: 100px;
    height: 40px;
    border-radius: var(--radius-md);
    border: 1px solid var(--neutral-300);
    box-shadow: var(--shadow-sm);
}

/* ===== REPORTS SECTION ===== */
.report-controls {
    display: flex;
    gap: var(--spacing-4);
    align-items: center;
    flex-wrap: wrap;
}

.date-range-controls {
    display: flex;
    gap: var(--spacing-3);
    align-items: center;
}

.export-controls {
    display: flex;
    gap: var(--spacing-3);
    align-items: center;
}


#custom-date-range {
    display: flex;
    gap: var(--spacing-2);
    align-items: center;
}

#custom-date-range input {
    padding: var(--spacing-2) var(--spacing-3);
    border: 1px solid var(--neutral-300);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
}

.report-summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-6);
    margin-bottom: var(--spacing-8);
}

.reports-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--spacing-6);
}

.chart-container {
    background: var(--neutral-100);
    border-radius: var(--radius-lg);
    padding: var(--spacing-6);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--neutral-200);
    min-height: 300px;
}

.chart-container h3 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--neutral-900);
    margin-bottom: var(--spacing-4);
    text-align: center;
}

#category-chart-container,
#monthly-chart-container,
#account-chart-container {
    position: relative;
    height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.top-expenses {
    max-height: 250px;
    overflow-y: auto;
}

.top-expense-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-3);
    border-bottom: 1px solid var(--neutral-200);
    transition: background-color var(--transition-fast);
}

.top-expense-item:hover {
    background-color: var(--neutral-50);
}

.top-expense-item:last-child {
    border-bottom: none;
}

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

.top-expense-description {
    font-weight: 500;
    color: var(--neutral-900);
    margin-bottom: var(--spacing-1);
}

.top-expense-details {
    font-size: var(--font-size-sm);
    color: var(--neutral-500);
}

.top-expense-value {
    font-weight: 600;
    color: var(--danger-color);
    font-size: var(--font-size-lg);
}

.subtitle {
    font-size: var(--font-size-sm);
    color: var(--neutral-500);
    margin-top: var(--spacing-1);
}

/* Chart.js responsive containers */
.chart-container canvas {
    max-width: 100%;
    height: auto;
}

/* Loading state for charts */
.chart-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 200px;
    color: var(--neutral-500);
    font-style: italic;
}

/* No data state for charts */
.chart-no-data {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 200px;
    color: var(--neutral-500);
    text-align: center;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 768px) {
    .dashboard {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        height: auto;
        position: static;
        border-right: none;
        border-bottom: 1px solid var(--neutral-200);
    }
    
    .nav-menu {
        flex-direction: row;
        overflow-x: auto;
        padding: 0 var(--spacing-4);
    }
    
    .nav-item {
        white-space: nowrap;
        min-width: fit-content;
    }
    
    .summary-cards {
        grid-template-columns: 1fr;
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .categories-grid,
    .accounts-grid,
    .budgets-grid,
    .tags-grid {
        grid-template-columns: 1fr;
    }
    
    .filters {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filters select,
    .filters input[type="date"] {
        width: 100%;
    }
    
    select {
        font-size: 16px; /* Evita zoom no iOS */
        padding: 14px 40px 14px 16px;
    }
    
    #category-filter,
    #tag-filter {
        min-width: 100%;
    }
    
    .section-header {
        flex-direction: column;
        gap: var(--spacing-4);
        align-items: stretch;
    }
    
    .transaction-controls {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-3);
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: var(--spacing-4);
    }
    
    .auth-container {
        padding: var(--spacing-6);
    }
    
    .modal {
        width: 95%;
        margin: var(--spacing-4);
    }
    
    .toast-container {
        left: var(--spacing-4);
        right: var(--spacing-4);
    }
    
    .toast {
        min-width: auto;
    }
}

/* ===== UTILITY CLASSES ===== */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }

.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }
.mt-8 { margin-top: var(--spacing-8); }

.hidden { display: none !important; }
.visible { display: block !important; }

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
    from { transform: translateX(-100%); }
    to { transform: translateX(0); }
}

.fade-in {
    animation: fadeIn var(--transition-normal) ease-out;
}

.slide-in {
    animation: slideIn var(--transition-normal) ease-out;
}