/* ==========================================================================
   Design System & Variables
   ========================================================================== */
:root {
    /* Fonts */
    --font-header: 'Outfit', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;

    /* Theme Variables - Dark Mode (Default) */
    --bg-primary: #0b0f19;
    --bg-secondary: #161b26;
    --bg-tertiary: #202736;
    --border-color: #242e42;
    --input-border: #2e3b54;
    --input-focus: #00A868;
    
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    
    --accent: #00A868;
    --accent-hover: #00be75;
    --accent-rgb: 0, 168, 104;
    
    --card-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    --card-shadow-hover: 0 25px 50px rgba(0, 0, 0, 0.4);
    --toggle-bg: #202736;
    --col-bg-active: #1e2638;
    --table-header-bg: #1f283b;
    --table-border: #242e42;

    --error-color: #ef4444;
    --success-color: #10b981;
    
    /* Layout constants */
    --border-radius-lg: 16px;
    --border-radius-md: 10px;
    --border-radius-sm: 6px;
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html[data-theme="light"] {
    /* Theme Variables - Light Mode */
    --bg-primary: #f4f6f9;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f3f7;
    --border-color: #e2e8f0;
    --input-border: #cbd5e1;
    --input-focus: #00A868;
    
    --text-primary: #1f2937;
    --text-secondary: #4b5563;
    --text-muted: #9ca3af;
    
    --accent: #00A868;
    --accent-hover: #008d57;
    
    --card-shadow: 0 15px 30px rgba(0, 0, 0, 0.05);
    --card-shadow-hover: 0 20px 40px rgba(0, 0, 0, 0.08);
    --toggle-bg: #e2e8f0;
    --col-bg-active: #f8fafc;
    --table-header-bg: #f1f5f9;
    --table-border: #e2e8f0;
}

/* ==========================================================================
   Base & Reset Styles
   ========================================================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

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

/* ==========================================================================
   Header Component
   ========================================================================== */
.app-header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(8px);
    transition: var(--transition-smooth);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-area {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand-name {
    font-family: var(--font-header);
    font-weight: 800;
    font-size: 1.35rem;
    color: var(--text-primary);
    letter-spacing: -0.5px;
    white-space: nowrap;
}

.badge {
    background-color: var(--accent-light, rgba(0, 168, 104, 0.15));
    border: 1px solid var(--accent);
    color: var(--accent);
    font-family: var(--font-header);
    font-weight: 600;
    font-size: 0.75rem;
    padding: 0.2rem 0.6rem;
    border-radius: 20px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.back-nav {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-smooth);
}

.back-nav:hover {
    color: var(--accent);
}

.back-nav svg {
    transition: transform 0.2s ease;
}

.back-nav:hover svg {
    transform: translateX(-4px);
}

/* Theme Toggle Button */
.theme-toggle-btn {
    background-color: var(--toggle-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.theme-toggle-btn:hover {
    background-color: var(--border-color);
    transform: scale(1.05);
}

/* Icon visibility */
html[data-theme="dark"] .sun-icon { display: block; }
html[data-theme="dark"] .moon-icon { display: none; }
html[data-theme="light"] .sun-icon { display: none; }
html[data-theme="light"] .moon-icon { display: block; }

@media (max-width: 768px) {
    .header-container {
        padding: 0.75rem 1rem;
    }
    .nav-links {
        gap: 0.5rem;
    }
    .back-nav {
        display: none;
    }
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.app-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2.5rem 1.5rem 4rem 1.5rem;
}

.hero-section {
    text-align: center;
    margin-bottom: 3rem;
}

.hero-title {
    font-family: var(--font-header);
    font-weight: 800;
    font-size: clamp(2rem, 4vw, 2.75rem);
    color: var(--text-primary);
    line-height: 1.2;
    margin-bottom: 1rem;
    letter-spacing: -0.5px;
}

.hero-subtitle {
    font-size: clamp(1rem, 1.8vw, 1.15rem);
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto;
}

/* ==========================================================================
   Quick Navigation
   ========================================================================== */
.quick-nav {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin: 16px 0 24px;
  flex-wrap: wrap;
}
.quick-nav-btn {
  padding: 8px 20px;
  border-radius: 50px;
  background: #00A868;
  color: #fff;
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  transition: opacity 0.2s;
}
.quick-nav-btn:hover { opacity: 0.85; }

/* ==========================================================================
   Calculator Card & Tabs Layout
   ========================================================================== */
.calculator-container {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--card-shadow);
    overflow: hidden;
    margin-bottom: 4rem;
    transition: var(--transition-smooth);
}

.calculator-container:hover {
    box-shadow: var(--card-shadow-hover);
}

/* Tabs Navigation */
.tabs-nav {
    display: flex;
    background-color: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
    padding: 0.5rem;
    gap: 0.25rem;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.tabs-nav::-webkit-scrollbar {
    height: 4px;
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-family: var(--font-header);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 0.85rem 1.25rem;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    flex: 1;
    white-space: nowrap;
    transition: var(--transition-smooth);
}

.tab-btn:hover {
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.03);
}

html[data-theme="light"] .tab-btn:hover {
    background-color: rgba(0, 0, 0, 0.02);
}

.tab-btn.active {
    background-color: var(--bg-secondary);
    color: var(--accent);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

html[data-theme="light"] .tab-btn.active {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

.tab-btn svg {
    stroke: currentColor;
    flex-shrink: 0;
}

/* Tab Panes */
.tabs-content {
    padding: 2.25rem;
}

.tab-pane {
    display: none;
    animation: fadeIn 0.4s ease forwards;
}

.tab-pane.active {
    display: block;
}

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

/* Grid within tabs */
.calculator-grid {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 2.5rem;
}

@media (max-width: 992px) {
    .calculator-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .tabs-content {
        padding: 1.5rem;
    }
}

/* ==========================================================================
   Form Controls
   ========================================================================== */
.form-title {
    font-family: var(--font-header);
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    overflow: hidden;
    width: 100%;
}

.input-prefix {
    position: absolute;
    left: 1rem;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.95rem;
    user-select: none;
}

.form-group input,
.input-wrapper input {
    width: 100%;
    min-width: 0; /* evita overflow no grid/flex */
    background-color: var(--bg-tertiary);
    border: 1px solid var(--input-border);
    color: var(--text-primary);
    padding: 0.85rem 1rem;
    border-radius: var(--border-radius-md);
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 1rem;
    outline: none;
    transition: var(--transition-smooth);
}

.form-group input:focus,
.input-wrapper input:focus {
    border-color: var(--input-focus);
    box-shadow: 0 0 0 3px rgba(0, 168, 104, 0.15);
}

.input-wrapper .input-prefix + input {
    padding-left: 2.5rem;
}

.input-helper {
    display: block;
    font-size: 0.78rem;
    color: var(--text-muted);
    margin-top: 0.35rem;
}

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

/* Hide native styling for HTML date inputs inside wrapper */
input[type="date"] {
    position: relative;
}

/* Custom Sliding Toggle Switch for Saque/Amortização */
.toggle-group-container {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.toggle-group-container.secondary {
    margin-top: 1.5rem;
}

.toggle-label {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.toggle-switch-wrapper {
    position: relative;
    display: flex;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    padding: 0.25rem;
    border-radius: var(--border-radius-md);
    width: 100%;
}

.toggle-switch-wrapper input[type="radio"] {
    display: none;
}

.toggle-switch-wrapper label.switch-btn {
    flex: 1;
    text-align: center;
    padding: 0.75rem 0.5rem;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    z-index: 2;
    margin-bottom: 0;
    user-select: none;
    transition: var(--transition-smooth);
}

.toggle-switch-wrapper input[type="radio"]:checked + label.switch-btn {
    color: var(--accent);
}

.switch-slider {
    position: absolute;
    top: 0.25rem;
    bottom: 0.25rem;
    left: 0.25rem;
    width: calc(50% - 0.25rem);
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: calc(var(--border-radius-md) - 2px);
    z-index: 1;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

/* Slide movement logic */
#t2-mod-rescisao:checked ~ .switch-slider {
    transform: translateX(100%);
}

#t3-sis-price:checked ~ .switch-slider {
    transform: translateX(100%);
}

/* Hidden Field utility */
.hidden-field {
    display: none;
}

/* ==========================================================================
   Results Design (Right Column)
   ========================================================================== */
.results-column {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.results-card {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    transition: var(--transition-smooth);
}

.results-card.highlight-border {
    border-left: 4px solid var(--accent);
}

.card-caption {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.result-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
}

.result-row:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.result-row.principal {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1rem;
}

.result-row.principal .result-value {
    font-size: 2.25rem;
    font-weight: 800;
    letter-spacing: -1px;
}

.result-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.result-value {
    font-family: var(--font-header);
    font-weight: 700;
    font-size: 1.15rem;
    color: var(--text-primary);
}

.result-value.green {
    color: var(--accent);
}

/* Projection Box Grid */
.projections-summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 0.75rem;
}

.proj-box {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 1rem 0.75rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    transition: var(--transition-smooth);
}

.proj-box.highlight {
    border-color: var(--accent);
    background-color: var(--accent-light, rgba(0, 168, 104, 0.05));
}

.proj-label {
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.proj-value {
    font-family: var(--font-header);
    font-weight: 700;
    font-size: 1rem;
    color: var(--text-primary);
}

.proj-box.highlight .proj-value {
    color: var(--accent);
}

.proj-sub {
    font-size: 0.7rem;
    color: var(--text-muted);
}

/* Explanation Tooltip Box */
.explanation-box {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 1rem;
    display: flex;
    gap: 0.75rem;
    align-items: flex-start;
}

.exp-icon {
    font-size: 1.25rem;
    line-height: 1;
}

.exp-text {
    font-size: 0.8rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Comparison layouts for Financiamento */
.comparison-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.comparison-col {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 1.25rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
    transition: var(--transition-smooth);
}

.comparison-col.active {
    border: 2px solid var(--accent);
    background-color: var(--col-bg-active);
}

.col-title {
    font-family: var(--font-header);
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--text-secondary);
    letter-spacing: 0.5px;
    margin-bottom: 0.25rem;
}

.metric-row {
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.m-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.m-val {
    font-family: var(--font-header);
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--text-primary);
}

.m-val.text-red {
    color: var(--error-color);
}

/* Charts */
.chart-container {
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 0.75rem;
}

/* ==========================================================================
   SEO Content Section
   ========================================================================== */
.seo-content-section {
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    padding: 3rem;
    box-shadow: var(--card-shadow);
}

.seo-main-title {
    font-family: var(--font-header);
    font-weight: 800;
    font-size: 1.85rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.75rem;
}

.seo-paragraph-block {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
}

.seo-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}

@media (max-width: 768px) {
    .seo-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    .seo-content-section {
        padding: 1.5rem;
    }
}

.seo-article-card {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.seo-article-card h3 {
    font-family: var(--font-header);
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-primary);
    position: relative;
    padding-left: 0.75rem;
    margin-top: 0.5rem;
}

.seo-article-card h3::before {
    content: '';
    position: absolute;
    left: 0;
    top: 4px;
    bottom: 4px;
    width: 3px;
    background-color: var(--accent);
    border-radius: 2px;
}

.seo-article-card p {
    font-size: 0.95rem;
    line-height: 1.7;
    color: var(--text-secondary);
    text-align: justify;
}

.seo-article-card ul {
    padding-left: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.seo-article-card li {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.seo-article-card li strong {
    color: var(--text-primary);
}

/* Comparison Table inside SEO section */
.seo-article-card table {
    width: 100%;
    border-collapse: collapse;
    margin: 0.75rem 0;
    font-size: 0.85rem;
}

.seo-article-card th {
    background-color: var(--table-header-bg);
    color: var(--text-primary);
    font-weight: 700;
    text-align: left;
    padding: 0.75rem;
    border-bottom: 2px solid var(--table-border);
}

.seo-article-card td {
    padding: 0.75rem;
    border-bottom: 1px solid var(--table-border);
    color: var(--text-secondary);
}

.seo-article-card tr:last-child td {
    border-bottom: none;
}

/* ==========================================================================
   Footer Component
   ========================================================================== */
.app-footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 3rem 1.5rem;
    margin-top: 4rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 2rem;
}

@media (max-width: 768px) {
    .footer-container {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 1.5rem;
    }
}

.footer-info {
    max-width: 500px;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer-logo {
    font-family: var(--font-header);
    font-weight: 800;
    font-size: 1.15rem;
    color: var(--text-primary);
}

.footer-copy {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 500;
    transition: var(--transition-smooth);
}

.footer-links a:hover {
    color: var(--accent);
}

@media (max-width: 576px) {
    .app-main {
        padding: 1.5rem 0.75rem 3rem 0.75rem;
    }
    .brand-name {
        font-size: 1.15rem;
    }
    .badge {
        font-size: 0.7rem;
        padding: 0.15rem 0.5rem;
    }
    .tabs-content {
        padding: 1rem 0.75rem;
    }
    .form-row {
        grid-template-columns: 1fr;
    }
    .result-row:not(.principal) {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.25rem;
        padding-bottom: 0.5rem;
    }
    .result-row:not(.principal) .result-value {
        align-self: flex-start;
        font-size: 1rem;
    }
    .result-row:not(.principal) .result-label {
        font-size: 0.85rem;
    }
    .result-row.principal .result-value {
        font-size: 1.75rem;
    }
    .proj-box {
        padding: 0.75rem 0.5rem;
    }
    .proj-value {
        font-size: 0.9rem;
    }
    .quick-nav-btn {
        padding: 6px 14px;
        font-size: 0.8rem;
    }
}