/* ============================================
   CalculaDeTudo - Design System & Global Styles
   ============================================ */

/* ---- CSS Custom Properties ---- */
:root {
    /* Colors */
    --color-bg: #f6f7f9;
    --color-surface: #ffffff;
    --color-surface-hover: #f0f2f5;
    --color-text: #1a1a2e;
    --color-text-secondary: #5a5f7a;
    --color-text-muted: #8b90a5;
    --color-border: #e2e5ed;
    --color-border-light: #eef0f4;

    /* Navbar */
    --navbar-bg: #0a1f44;
    --navbar-text: #c8d4e8;
    --navbar-text-hover: #ffffff;
    --navbar-height: 64px;

    /* Primary palette */
    --color-primary: #2563eb;
    --color-primary-hover: #1d4fd8;
    --color-primary-light: #dbeafe;
    --color-primary-glow: rgba(37, 99, 235, 0.15);

    /* Accent colors for categories */
    --cat-financeira: #2563eb;
    --cat-investimentos: #059669;
    --cat-impostos: #d97706;
    --cat-conversores: #7c3aed;
    --cat-datas: #dc2626;
    --cat-saude: #ec4899;
    --cat-cientifica: #0891b2;

    /* Status */
    --color-success: #10b981;
    --color-warning: #f59e0b;
    --color-error: #ef4444;
    --color-info: #3b82f6;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.06), 0 2px 4px rgba(0,0,0,0.04);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.08), 0 4px 8px rgba(0,0,0,0.04);
    --shadow-xl: 0 20px 50px rgba(0,0,0,0.1), 0 8px 16px rgba(0,0,0,0.06);

    /* Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 9999px;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Font */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 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: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3rem;

    /* Dropdown */
    --dropdown-bg: #ffffff;
    --dropdown-hover: #f0f2f5;
    --dropdown-text: #1a1a2e;
    --dropdown-shadow: 0 10px 40px rgba(0,0,0,0.12);
}

/* ---- Dark Mode ---- */
[data-theme="dark"] {
    --color-bg: #0f1219;
    --color-surface: #1a1f2e;
    --color-surface-hover: #252b3d;
    --color-text: #e4e7ed;
    --color-text-secondary: #9ca3b8;
    --color-text-muted: #6b7280;
    --color-border: #2d3348;
    --color-border-light: #232940;
    --navbar-bg: #0b1020;
    --color-primary-light: #1e2a4a;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.2);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.3);
    --shadow-lg: 0 10px 30px rgba(0,0,0,0.4);
    --shadow-xl: 0 20px 50px rgba(0,0,0,0.5);
    --dropdown-bg: #1a1f2e;
    --dropdown-hover: #252b3d;
    --dropdown-text: #e4e7ed;
    --dropdown-shadow: 0 10px 40px rgba(0,0,0,0.5);
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

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

a {
    color: inherit;
    text-decoration: none;
}

button {
    cursor: pointer;
    border: none;
    background: none;
    font-family: inherit;
    font-size: inherit;
    color: inherit;
}

input, select, textarea {
    font-family: inherit;
    font-size: inherit;
}

ul, ol { list-style: none; }

img { max-width: 100%; display: block; }

/* ============================================
   NAVBAR
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--navbar-bg);
    height: var(--navbar-height);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.navbar-container {
    max-width: 1320px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    height: 100%;
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.navbar-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 700;
    font-size: var(--font-size-xl);
    color: #fff;
    flex-shrink: 0;
    text-decoration: none;
    transition: opacity var(--transition-fast);
}
.navbar-brand:hover { opacity: 0.9; }
.brand-icon { font-size: 1.5rem; }
.brand-accent { color: #60a5fa; }

/* Nav */
.navbar-nav {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    flex: 1;
    justify-content: center;
}

.nav-item { position: relative; }

.nav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 14px;
    color: var(--navbar-text);
    font-size: var(--font-size-sm);
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.nav-link:hover,
.nav-link:focus-visible {
    color: var(--navbar-text-hover);
    background: rgba(255,255,255,0.08);
}

.nav-icon {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.chevron {
    width: 14px;
    height: 14px;
    transition: transform var(--transition-fast);
    opacity: 0.5;
}

.nav-item.dropdown:hover .chevron,
.nav-item.dropdown:focus-within .chevron {
    transform: rotate(180deg);
    opacity: 1;
}

/* Dropdown Menu */
.dropdown-menu {
    position: absolute;
    top: calc(100% + 8px);
    left: 50%;
    transform: translateX(-50%) translateY(-4px);
    min-width: 240px;
    background: var(--dropdown-bg);
    border-radius: var(--radius-md);
    box-shadow: var(--dropdown-shadow);
    border: 1px solid var(--color-border-light);
    padding: var(--space-sm);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: all var(--transition-normal);
    z-index: 100;
}

.nav-item.dropdown:hover .dropdown-menu,
.nav-item.dropdown:focus-within .dropdown-menu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}

.dropdown-item {
    display: block;
    padding: 10px 14px;
    color: var(--dropdown-text);
    font-size: var(--font-size-sm);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    font-weight: 400;
}

.dropdown-item:hover {
    background: var(--dropdown-hover);
    color: var(--color-primary);
    padding-left: 18px;
}

/* Theme Toggle */
.theme-toggle {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    color: var(--navbar-text);
    transition: all var(--transition-fast);
    flex-shrink: 0;
}
.theme-toggle:hover {
    background: rgba(255,255,255,0.1);
    color: #fff;
}
.theme-icon {
    width: 20px;
    height: 20px;
}
.theme-icon.moon { display: none; }
[data-theme="dark"] .theme-icon.sun { display: none; }
[data-theme="dark"] .theme-icon.moon { display: block; }

/* Mobile Toggle */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    z-index: 1001;
}
.mobile-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: all var(--transition-normal);
}
.mobile-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translateY(5px) translateX(5px);
}
.mobile-toggle.active span:nth-child(2) {
    opacity: 0;
}
.mobile-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translateY(-5px) translateX(5px);
}

.mobile-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 998;
    backdrop-filter: blur(4px);
}
.mobile-overlay.active {
    display: block;
}

/* ============================================
   MAIN CONTENT
   ============================================ */
.main-content {
    min-height: calc(100vh - var(--navbar-height));
    margin-top: var(--navbar-height);
}

/* ============================================
   HOME PAGE
   ============================================ */
.hero {
    text-align: center;
    padding: var(--space-xl) var(--space-lg) var(--space-sm);
    max-width: 1200px;
    margin: 0 auto;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: -120px;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--color-primary-glow) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

.hero > * { position: relative; z-index: 1; }

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: 6px 16px;
    background: var(--color-primary-light);
    color: var(--color-primary);
    border-radius: var(--radius-full);
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--space-lg);
    border: 1px solid rgba(37, 99, 235, 0.15);
}

.hero h1 {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--color-text) 0%, var(--color-text-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 600px;
    margin: 0 auto var(--space-xl);
    line-height: 1.7;
}

/* Search Bar */
.search-container {
    max-width: 560px;
    margin: 0 auto 0;
    position: relative;
}

.search-bar {
    width: 100%;
    padding: 16px 20px 16px 52px;
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-border);
    background: var(--color-surface);
    font-size: var(--font-size-base);
    color: var(--color-text);
    outline: none;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.search-bar:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 4px var(--color-primary-glow);
}

.search-bar::placeholder {
    color: var(--color-text-muted);
}

.search-icon {
    position: absolute;
    top: 50%;
    left: 18px;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--color-text-muted);
    pointer-events: none;
}

.search-results {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    max-height: 360px;
    overflow-y: auto;
    display: none;
    z-index: 50;
}

.search-results.active {
    display: block;
    animation: fadeSlideDown 0.2s ease;
}

.search-result-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: 12px 16px;
    cursor: pointer;
    transition: background var(--transition-fast);
    border-bottom: 1px solid var(--color-border-light);
}

.search-result-item:last-child { border-bottom: none; }

.search-result-item:hover {
    background: var(--color-surface-hover);
}

.search-result-cat {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    background: var(--color-primary-light);
    color: var(--color-primary);
    white-space: nowrap;
}

.search-result-name {
    font-weight: 500;
    color: var(--color-text);
}

.search-no-results {
    padding: 20px;
    text-align: center;
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

/* ============================================
   CATEGORY CARDS
   ============================================ */
.categories-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg) var(--space-3xl);
}

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

.section-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    letter-spacing: -0.01em;
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
    gap: var(--space-lg);
}

.category-card {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    border: 1px solid var(--color-border-light);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.category-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--card-color, var(--color-primary));
    transform: scaleX(0);
    transition: transform var(--transition-normal);
}

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

.category-card:hover::before {
    transform: scaleX(1);
}

.card-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: var(--space-md);
    background: var(--card-color-light, var(--color-primary-light));
    color: var(--card-color, var(--color-primary));
}

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

.card-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--space-sm);
}

.card-desc {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    line-height: 1.5;
}

.card-count {
    font-size: var(--font-size-xs);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
}

/* ============================================
   POPULAR SECTION
   ============================================ */
.popular-section {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg) var(--space-3xl);
}

.popular-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-md);
}

.popular-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
}

.popular-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

.popular-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

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

/* ============================================
   CALCULATOR PAGE
   ============================================ */
.calc-page {
    max-width: 720px;
    margin: 0 auto;
    padding: var(--space-xl) var(--space-lg) var(--space-3xl);
    animation: fadeIn 0.3s ease;
}

.calc-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-xl);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.calc-breadcrumb a {
    color: var(--color-primary);
    transition: color var(--transition-fast);
}
.calc-breadcrumb a:hover { text-decoration: underline; }
.calc-breadcrumb .sep { opacity: 0.4; }

.calc-header {
    margin-bottom: var(--space-xl);
}

.calc-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-sm);
}

.calc-description {
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
    line-height: 1.6;
}

/* Calculator Form */
.calc-form {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    border: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-sm);
    margin-bottom: var(--space-xl);
}

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

.form-label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.form-hint {
    display: block;
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

.form-input,
.form-select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg);
    color: var(--color-text);
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
    outline: none;
}

.form-input:focus,
.form-select:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-glow);
    background: var(--color-surface);
}

.form-input.error {
    border-color: var(--color-error);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.form-input-group {
    display: flex;
    gap: var(--space-md);
}

.form-input-group > * {
    flex: 1;
}

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

/* Buttons */
.btn-group {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-lg);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
    cursor: pointer;
    border: 2px solid transparent;
    min-height: 48px;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
}
.btn-primary:hover {
    background: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}
.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-secondary);
    border-color: var(--color-border);
}
.btn-secondary:hover {
    background: var(--color-surface-hover);
    border-color: var(--color-text-muted);
}

/* Result */
.calc-result {
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    border: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-sm);
    display: none;
    animation: fadeSlideUp 0.4s ease;
}

.calc-result.active {
    display: block;
}

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

.result-title {
    font-size: var(--font-size-sm);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
}

.btn-copy-result {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    transition: all var(--transition-fast);
}

.btn-copy-result:hover {
    color: var(--color-primary);
    background: var(--color-primary-light);
    border-color: var(--color-primary);
}

.btn-copy-result.copied {
    color: var(--color-success);
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--color-success);
}

.result-value {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

.result-details {
    border-top: 1px solid var(--color-border-light);
    padding-top: var(--space-md);
}

.result-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 0;
    font-size: var(--font-size-sm);
}

.result-row-label {
    color: var(--color-text-secondary);
}

.result-row-value {
    font-weight: 600;
    color: var(--color-text);
}

/* Result table for amortization etc. */
.result-table-container {
    overflow-x: auto;
    margin-top: var(--space-md);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border-light);
}

.result-table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.result-table th {
    background: var(--color-bg);
    padding: 10px 14px;
    text-align: left;
    font-weight: 600;
    color: var(--color-text-secondary);
    border-bottom: 1px solid var(--color-border);
    white-space: nowrap;
}

.result-table td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--color-border-light);
    white-space: nowrap;
}

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

.result-table tr:hover td {
    background: var(--color-surface-hover);
}

/* ============================================
   CATEGORY PAGE
   ============================================ */
.category-page {
    max-width: 1000px;
    margin: 0 auto;
    padding: var(--space-xl) var(--space-lg) var(--space-3xl);
    animation: fadeIn 0.3s ease;
}

.category-page-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.category-page-icon {
    width: 72px;
    height: 72px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto var(--space-md);
}

.category-page-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
}

.category-page-desc {
    color: var(--color-text-secondary);
    margin-top: var(--space-sm);
}

.calc-list-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.calc-list-item {
    background: var(--color-surface);
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    border: 1px solid var(--color-border-light);
    transition: all var(--transition-normal);
    cursor: pointer;
}

.calc-list-item:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-3px);
    border-color: var(--color-primary);
}

.calc-list-item h3 {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.calc-list-item p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* Category Editorial Content */
.category-editorial {
    margin-top: var(--space-2xl);
    padding: var(--space-xl);
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-sm);
    line-height: 1.8;
}

.category-editorial h2 {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

.category-editorial h3 {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-top: var(--space-xl);
    margin-bottom: var(--space-sm);
    color: var(--color-text);
}

.category-editorial p {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.category-editorial ul {
    list-style-type: disc;
    padding-left: var(--space-xl);
    margin-bottom: var(--space-md);
    color: var(--color-text-secondary);
}

.category-editorial li {
    margin-bottom: var(--space-xs);
}

.category-editorial .formula-box {
    background: var(--color-bg);
    border-left: 4px solid var(--color-primary);
    padding: var(--space-md) var(--space-lg);
    margin: var(--space-lg) 0;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    font-family: monospace;
    font-size: var(--font-size-lg);
    color: var(--color-text);
}

.category-editorial .example-box {
    background: rgba(16, 185, 129, 0.05); /* very light success green */
    border: 1px solid rgba(16, 185, 129, 0.2);
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    margin: var(--space-lg) 0;
}

.category-editorial .example-box h4 {
    color: var(--color-success);
    margin-bottom: var(--space-sm);
    font-size: var(--font-size-lg);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--navbar-bg);
    color: var(--navbar-text);
    padding: var(--space-3xl) 0 var(--space-lg);
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1.5fr;
    gap: var(--space-2xl);
    margin-bottom: var(--space-2xl);
}

.footer-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: #fff;
    margin-bottom: var(--space-md);
}

.footer-subtitle {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: #fff;
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-text {
    font-size: var(--font-size-sm);
    line-height: 1.6;
    opacity: 0.75;
}

.footer-links li {
    margin-bottom: var(--space-sm);
}

.footer-links a {
    font-size: var(--font-size-sm);
    opacity: 0.7;
    transition: opacity var(--transition-fast);
}
.footer-links a:hover {
    opacity: 1;
    color: #fff;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: var(--space-lg);
    text-align: center;
    font-size: var(--font-size-sm);
    opacity: 0.5;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeSlideUp {
    from {
        opacity: 0;
        transform: translateY(16px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeSlideDown {
    from {
        opacity: 0;
        transform: translateY(-8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 1024px) {
    .navbar-nav {
        gap: 0;
    }
    .nav-link {
        padding: 8px 12px;
        font-size: var(--font-size-sm);
    }
    .nav-icon { display: none; }
}

/* Matrix Grid Layout */
.form-grid-matrix {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    align-items: end;
}

.form-grid-matrix .form-group:first-child {
    grid-column: 1 / -1;
}

.form-grid-matrix .btn-group {
    grid-column: 1 / -1;
}

@media (max-width: 768px) {
    .mobile-toggle {
        display: flex;
    }

    .navbar-nav {
        position: fixed;
        top: 0;
        right: -300px;
        width: 300px;
        height: 100vh;
        background: var(--navbar-bg);
        flex-direction: column;
        align-items: stretch;
        padding: calc(var(--navbar-height) + 20px) var(--space-lg) var(--space-lg);
        gap: var(--space-xs);
        transition: right var(--transition-slow);
        overflow-y: auto;
        z-index: 999;
    }

    .navbar-nav.active {
        right: 0;
    }

    .nav-link {
        font-size: var(--font-size-base);
        padding: 12px 16px;
    }

    .nav-icon { display: block; }

    .dropdown-menu {
        position: static;
        transform: none;
        box-shadow: none;
        border: none;
        background: rgba(255,255,255,0.05);
        padding: 0;
        max-height: 0;
        overflow: hidden;
        transition: all var(--transition-normal);
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        margin-top: 0;
        border-radius: var(--radius-sm);
    }

    .dropdown.active .dropdown-menu {
        max-height: 500px;
        padding: var(--space-sm);
        margin-top: var(--space-xs);
        transform: none;
    }

    .dropdown-item {
        color: var(--navbar-text);
    }
    .dropdown-item:hover {
        background: rgba(255,255,255,0.08);
        color: #fff;
    }

    .hero h1 {
        font-size: var(--font-size-3xl);
    }

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

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

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

    .form-input-group {
        flex-direction: column;
    }

    .btn-group {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
    }

    .form-grid-matrix {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-sm);
    }

    .calc-title {
        font-size: var(--font-size-2xl);
    }

    .result-value {
        font-size: var(--font-size-3xl);
    }

    .calc-list-grid {
        grid-template-columns: 1fr;
    }

    /* Responsive tables */
    .result-table-container {
        width: 100%;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        margin-top: var(--space-md);
        border-radius: var(--radius-sm);
        border: 1px solid var(--color-border-light);
    }

    .result-table {
        min-width: 500px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: var(--space-xl) var(--space-md);
    }

    .hero h1 {
        font-size: var(--font-size-2xl);
    }

    .calc-page {
        padding: var(--space-md) var(--space-md) var(--space-2xl);
    }

    .calc-form {
        padding: var(--space-lg);
    }

    .calc-result {
        padding: var(--space-lg);
    }

    .calc-breadcrumb {
        flex-wrap: wrap;
        font-size: var(--font-size-xs);
    }

    .btn-group {
        width: 100%;
    }
}

/* ============================================
   SCROLLBAR
   ============================================ */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--color-bg);
}
::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--color-text-muted);
}

/* ============================================
   FORM VALIDATION FEEDBACK
   ============================================ */
.form-error-message {
    color: var(--color-error);
    font-size: var(--font-size-xs);
    margin-top: var(--space-xs);
    display: none;
}

.form-error-message.visible {
    display: block;
    animation: fadeSlideDown 0.2s ease;
}

/* Info tooltips */
.info-tip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-border);
    color: var(--color-text-muted);
    font-size: 10px;
    font-weight: 700;
    cursor: help;
    margin-left: var(--space-xs);
    position: relative;
}

/* Loading state */
.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* Toast notifications */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 14px 20px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    font-size: var(--font-size-sm);
    font-weight: 500;
    z-index: 2000;
    animation: fadeSlideUp 0.3s ease;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.toast.success { border-left: 3px solid var(--color-success); }
.toast.error { border-left: 3px solid var(--color-error); }
.toast.info { border-left: 3px solid var(--color-info); }

/* ============================================
   BACK TO CATEGORY LINK
   ============================================ */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-primary);
    font-size: var(--font-size-sm);
    font-weight: 500;
    margin-bottom: var(--space-lg);
    transition: gap var(--transition-fast);
}

.back-link:hover {
    gap: var(--space-md);
}

.back-link svg {
    width: 16px;
    height: 16px;
}

/* ============================================
   CATEGORY: CURIOSIDADES
   ============================================ */
:root { --cat-curiosidades: #ca8a04; }

/* ============================================
   STOCK TICKER (Marquee)
   ============================================ */
.stock-ticker {
    background: linear-gradient(135deg, #0b1020 0%, #1a1f2e 100%);
    color: #e4e7ed;
    overflow: hidden;
    position: relative;
    padding: 10px 0;
    border-bottom: 1px solid rgba(255,255,255,0.08);
}

.ticker-track {
    display: flex;
    animation: ticker-scroll 30s linear infinite;
    width: max-content;
}

.ticker-content {
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
    padding: 0 16px;
}

.ticker-item {
    font-size: var(--font-size-sm);
    font-weight: 500;
    padding: 4px 12px;
}

.ticker-item strong { margin-right: 6px; }

.ticker-change {
    font-size: var(--font-size-xs);
    font-weight: 600;
    margin-left: 4px;
}

.ticker-up { color: #10b981; }
.ticker-up .ticker-change { color: #34d399; }
.ticker-down { color: #ef4444; }
.ticker-down .ticker-change { color: #f87171; }

.ticker-sep {
    color: rgba(255,255,255,0.15);
    margin: 0 4px;
}

.ticker-live-badge {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0,0,0,0.6);
    backdrop-filter: blur(8px);
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: #10b981;
    display: flex;
    align-items: center;
    gap: 6px;
    z-index: 2;
}

.live-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #10b981;
    display: inline-block;
    animation: pulse-dot 1.5s ease-in-out infinite;
}

@keyframes ticker-scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(-50%); }
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(16,185,129,0.5); }
    50% { opacity: 0.6; box-shadow: 0 0 0 6px rgba(16,185,129,0); }
}

/* ============================================
   SELIC BADGE
   ============================================ */
.selic-badge {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: 12px 20px;
    background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    border: 1px solid #6ee7b7;
}

[data-theme="dark"] .selic-badge {
    background: linear-gradient(135deg, #064e3b 0%, #065f46 100%);
    border-color: #059669;
}

.selic-badge-icon { font-size: 1.5rem; }
.selic-badge-text { font-size: var(--font-size-sm); color: #065f46; flex: 1; }
[data-theme="dark"] .selic-badge-text { color: #a7f3d0; }
.selic-badge-text strong { font-size: var(--font-size-lg); }

.selic-badge-live {
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: #059669;
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ============================================
   MOEDAS LIVE BANNER
   ============================================ */
.moedas-live-banner {
    background: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    margin-bottom: var(--space-lg);
    box-shadow: var(--shadow-sm);
}

.moedas-loading {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.moedas-live-header {
    font-weight: 700;
    font-size: var(--font-size-base);
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: var(--space-md);
    color: var(--color-text);
}

.moedas-live-rates {
    display: flex;
    gap: var(--space-xl);
    flex-wrap: wrap;
    margin-bottom: var(--space-sm);
}

.moedas-rate-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.moedas-rate-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    font-weight: 500;
}

.moedas-rate-value {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--color-text);
}

.moedas-rate-change {
    font-size: var(--font-size-xs);
    font-weight: 700;
}

.moedas-live-time {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
}

/* ============================================
   CURIOSIDADES - TIMELINE & FUN FACTS
   ============================================ */
.curiosidades-timeline {
    margin-top: var(--space-2xl);
    padding: var(--space-xl);
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
}

.timeline-title {
    font-size: var(--font-size-lg);
    font-weight: 700;
    margin-bottom: var(--space-lg);
}

.timeline-items {
    position: relative;
    padding-left: 24px;
    border-left: 2px solid var(--color-border);
    max-height: 400px;
    overflow-y: auto;
}

.timeline-item {
    position: relative;
    padding: 8px 0 8px 16px;
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.timeline-dot {
    position: absolute;
    left: -29px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-primary);
    border: 2px solid var(--color-surface);
}

.timeline-year {
    font-size: var(--font-size-xs);
    font-weight: 700;
    color: var(--color-primary);
    min-width: 70px;
}

.timeline-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.curiosidades-fun-facts {
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border-light);
}

.curiosidades-fun-facts h4 {
    font-size: var(--font-size-base);
    font-weight: 700;
    margin-bottom: var(--space-md);
}

.fun-fact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: var(--space-md);
}

.fun-fact-item {
    text-align: center;
    padding: var(--space-md);
    background: var(--color-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border-light);
}

.fun-fact-value {
    display: block;
    font-size: var(--font-size-xl);
    font-weight: 800;
    color: var(--color-primary);
    margin-bottom: var(--space-xs);
}

.fun-fact-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ============================================
   LANGUAGE SELECTOR
   ============================================ */
.lang-selector {
    position: relative;
    flex-shrink: 0;
}

.lang-toggle {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    color: var(--navbar-text);
    font-size: var(--font-size-base);
    transition: all var(--transition-fast);
    cursor: pointer;
    background: none;
    border: none;
}

.lang-toggle:hover {
    background: rgba(255,255,255,0.1);
    color: #fff;
}

.lang-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 180px;
    background: var(--dropdown-bg);
    border-radius: var(--radius-md);
    box-shadow: var(--dropdown-shadow);
    border: 1px solid var(--color-border-light);
    padding: var(--space-sm);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transform: translateY(-4px);
    transition: all var(--transition-normal);
    z-index: 1001;
}

.lang-dropdown.active {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(0);
}

.lang-option {
    display: block;
    padding: 8px 12px;
    font-size: var(--font-size-sm);
    color: var(--dropdown-text);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background var(--transition-fast);
}

.lang-option:hover {
    background: var(--dropdown-hover);
    color: var(--color-primary);
}

/* ============================================
   COOKIE BANNER
   ============================================ */
.cookie-banner {
    position: fixed;
    bottom: 24px;
    left: 24px;
    right: 24px;
    max-width: 600px;
    background: var(--color-surface);
    padding: var(--space-lg);
    border-radius: var(--radius-lg);
    box-shadow: 0 20px 50px rgba(0,0,0,0.15);
    border: 1px solid var(--color-border);
    z-index: 10000;
    display: none;
    animation: fadeSlideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.cookie-banner.active {
    display: block;
}

.cookie-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-lg);
}

.cookie-content p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.cookie-content a {
    color: var(--color-primary);
    text-decoration: underline;
}

.cookie-actions {
    flex-shrink: 0;
}

@keyframes fadeSlideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ============================================
   LEGAL PAGES
   ============================================ */
.legal-page {
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-3xl) var(--space-lg);
}

.legal-content h1 {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--space-xl);
}

.legal-content h2 {
    font-size: var(--font-size-xl);
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-md);
}

.legal-content p {
    margin-bottom: var(--space-md);
    color: var(--color-text-secondary);
}

.legal-content ul {
    margin-bottom: var(--space-md);
    padding-left: var(--space-xl);
    list-style: disc;
}

.legal-content li {
    margin-bottom: var(--space-xs);
    color: var(--color-text-secondary);
}

/* ============================================
   RESPONSIVE TABLES
   ============================================ */
@media (max-width: 600px) {
    .result-table-container {
        margin: 0 -var(--space-md);
        padding: 0 var(--space-md);
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
    
    .result-table th, .result-table td {
        padding: 8px 12px;
        font-size: 13px;
        white-space: nowrap;
    }

    .cookie-content {
        flex-direction: column;
        text-align: center;
    }

    .cookie-banner {
        left: 12px;
        right: 12px;
        bottom: 12px;
    }
}


/* ============================================
   AD SPACES
   ============================================ */
.ad-space {
    margin: var(--space-xl) 0;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    overflow: hidden;
}

.ad-label {
    font-size: 10px;
    text-transform: uppercase;
    color: var(--color-text-muted);
    letter-spacing: 0.1em;
}

.ad-placeholder {
    width: 100%;
    min-height: 90px;
    background: var(--color-surface);
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

[data-theme='dark'] .ad-placeholder {
    background: var(--color-surface-hover);
}

.ad-horizontal {
    max-width: 100%;
}

.ad-placeholder .adsbygoogle {
    width: 100%;
}