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

:root {
    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --accent: #10b981;
    --accent-dark: #059669;
    --danger: #ef4444;
    --warning: #f59e0b;
    --bg: #f8fafc;
    --bg-card: #ffffff;
    --bg-dark: #0f172a;
    --text: #1e293b;
    --text-secondary: #64748b;
    --text-light: #94a3b8;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
    --shadow: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -2px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -4px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1), 0 8px 10px -6px rgba(0,0,0,0.1);
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* ===========================
   Ad Slots
   =========================== */
.ad-slot {
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f1f5f9;
    border: 1px dashed var(--border);
}

.ad-top,
.ad-bottom {
    width: 100%;
    min-height: 90px;
    max-height: 100px;
}

.ad-placeholder {
    color: var(--text-light);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.ad-placeholder-vertical {
    writing-mode: vertical-rl;
    text-orientation: mixed;
}

/* ===========================
   Page Layout with Side Ads
   =========================== */
.page-layout {
    display: flex;
    max-width: 1440px;
    margin: 0 auto;
    gap: 0;
}

.ad-side {
    width: 160px;
    min-width: 160px;
    position: sticky;
    top: 0;
    height: 100vh;
    flex-shrink: 0;
}

.main-content {
    flex: 1;
    min-width: 0;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 24px;
}

/* ===========================
   Hero + Form (above the fold)
   =========================== */
.hero-form {
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
    border-radius: var(--radius-xl);
    padding: 40px 40px 36px;
    margin-top: 24px;
    margin-bottom: 32px;
    position: relative;
    overflow: hidden;
}

.hero-form::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(37,99,235,0.15) 0%, transparent 70%);
    pointer-events: none;
}

.hero-form::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 300px;
    height: 300px;
    background: radial-gradient(circle, rgba(16,185,129,0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero-compact {
    text-align: center;
    margin-bottom: 28px;
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), #7c3aed);
    color: white;
    padding: 5px 16px;
    border-radius: 100px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    margin-bottom: 14px;
}

.hero-compact h1 {
    font-size: clamp(1.6rem, 4vw, 2.4rem);
    font-weight: 900;
    line-height: 1.15;
    color: white;
    margin-bottom: 8px;
}

.gradient-text {
    background: linear-gradient(135deg, #60a5fa, #a78bfa, #34d399);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-tagline {
    font-size: 0.95rem;
    color: #94a3b8;
    line-height: 1.5;
}

/* ===========================
   Form (inside hero-form)
   =========================== */
.calculator-form {
    position: relative;
    z-index: 1;
    max-width: 700px;
    margin: 0 auto;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr 140px;
    gap: 16px;
    margin-bottom: 20px;
}

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

.form-group label {
    font-size: 0.8rem;
    font-weight: 600;
    color: #cbd5e1;
    margin-bottom: 6px;
    letter-spacing: 0.01em;
}

.optional {
    color: #64748b;
    font-weight: 400;
    font-size: 0.72rem;
}

.form-group select,
.form-group input {
    width: 100%;
    padding: 12px 14px;
    border: 2px solid #334155;
    border-radius: 10px;
    font-size: 0.95rem;
    font-family: inherit;
    color: white;
    background: rgba(255,255,255,0.06);
    transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
    appearance: none;
    -webkit-appearance: none;
    backdrop-filter: blur(4px);
}

.form-group select {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='18' height='18' viewBox='0 0 24 24' fill='none' stroke='%2394a3b8' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
    cursor: pointer;
}

.form-group select option {
    background: #1e293b;
    color: white;
}

.form-group select:focus,
.form-group input:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
    background: rgba(255,255,255,0.1);
}

.form-group input::placeholder,
.form-group select::placeholder {
    color: #475569;
}

.aliquota-info {
    display: block;
    font-size: 0.75rem;
    color: #60a5fa;
    font-weight: 500;
    margin-top: 4px;
    min-height: 1em;
}

.input-hint {
    display: block;
    font-size: 0.72rem;
    color: #64748b;
    margin-top: 4px;
}

.input-hint a {
    color: #60a5fa;
    text-decoration: none;
    font-weight: 500;
}

.input-hint a:hover {
    text-decoration: underline;
}

/* ===========================
   Button
   =========================== */
.btn-calcular {
    width: 100%;
    padding: 14px 32px;
    background: linear-gradient(135deg, var(--primary), #7c3aed);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 700;
    font-family: inherit;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: transform 0.15s, box-shadow 0.15s, opacity 0.15s;
    box-shadow: 0 4px 20px rgba(37, 99, 235, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-calcular::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, transparent 40%, rgba(255,255,255,0.1) 50%, transparent 60%);
    transform: translateX(-100%);
    transition: transform 0.6s;
}

.btn-calcular:hover::after {
    transform: translateX(100%);
}

.btn-calcular:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 24px rgba(37, 99, 235, 0.45);
}

.btn-calcular:active {
    transform: translateY(0);
}

.btn-icon {
    font-size: 1.1rem;
    transition: transform 0.2s;
}

.btn-calcular:hover .btn-icon {
    transform: translateX(4px);
}

/* Trust Badges inside form */
.hero-form .trust-badges {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-top: 16px;
    flex-wrap: wrap;
}

.hero-form .badge {
    display: inline-flex;
    align-items: center;
    gap: 3px;
    background: rgba(16, 185, 129, 0.1);
    color: #34d399;
    padding: 4px 12px;
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 500;
    border: 1px solid rgba(16, 185, 129, 0.15);
}

/* ===========================
   Results
   =========================== */
.results {
    margin-bottom: 40px;
    animation: fadeInUp 0.5s ease;
}

.results.hidden {
    display: none;
}

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

.results-header {
    text-align: center;
    margin-bottom: 24px;
}

.results-header h2 {
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 4px;
}

.results-header p {
    color: var(--text-secondary);
    font-size: 0.88rem;
}

.results-grid {
    display: flex;
    align-items: stretch;
    gap: 12px;
    margin-bottom: 20px;
}

.result-card {
    flex: 1;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 24px 20px;
    text-align: center;
    border: 2px solid var(--border);
    transition: transform 0.2s;
}

.result-card.current {
    border-color: #fecaca;
    background: linear-gradient(to bottom, #fff5f5, white);
}

.result-card.new {
    border-color: #a7f3d0;
    background: linear-gradient(to bottom, #ecfdf5, white);
}

.result-card.arrow-card {
    flex: 0 0 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    background: none;
    padding: 0;
}

.arrow-icon {
    font-size: 1.8rem;
    color: var(--text-light);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 1; }
}

.result-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.result-aliquota {
    font-size: 0.82rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.result-card.current .result-aliquota {
    color: var(--danger);
}

.result-card.new .result-aliquota {
    color: var(--accent);
}

.result-value {
    font-size: 1.7rem;
    font-weight: 800;
    margin-bottom: 4px;
}

.result-card.current .result-value {
    color: var(--danger);
}

.result-card.new .result-value {
    color: var(--accent-dark);
}

.result-detail {
    font-size: 0.75rem;
    color: var(--text-light);
}

/* ===========================
   Savings
   =========================== */
.savings-section {
    margin-bottom: 20px;
}

.savings-card {
    background: linear-gradient(135deg, var(--bg-dark), #1e293b);
    border-radius: var(--radius-lg);
    padding: 28px;
    color: white;
}

.savings-row {
    display: flex;
    justify-content: space-around;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.saving-item {
    text-align: center;
}

.saving-label {
    display: block;
    font-size: 0.72rem;
    color: #94a3b8;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
    font-weight: 500;
}

.saving-value {
    display: block;
    font-size: 1.4rem;
    font-weight: 800;
    color: white;
}

.saving-percent {
    color: var(--accent) !important;
}

.saving-item.highlight .saving-value {
    color: var(--warning);
    font-size: 1.6rem;
}

/* ===========================
   Action Buttons
   =========================== */
.results-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-bottom: 20px;
}

.btn-secondary,
.btn-share {
    padding: 11px 24px;
    border-radius: 10px;
    font-size: 0.88rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-secondary {
    background: var(--bg);
    color: var(--text);
    border: 2px solid var(--border);
}

.btn-secondary:hover {
    border-color: var(--text-light);
    background: white;
}

.btn-share {
    background: var(--primary);
    color: white;
    border: 2px solid var(--primary);
}

.btn-share:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
}

/* ===========================
   Disclaimer
   =========================== */
.disclaimer {
    background: #fffbeb;
    border: 1px solid #fde68a;
    border-radius: var(--radius);
    padding: 14px 18px;
    font-size: 0.78rem;
    color: #92400e;
    line-height: 1.6;
}

/* ===========================
   Info Cards
   =========================== */
.info-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 14px;
    margin-bottom: 40px;
}

.info-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 22px 18px;
    text-align: center;
    transition: transform 0.2s, box-shadow 0.2s;
}

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

.info-icon {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.info-card h3 {
    font-size: 0.95rem;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--bg-dark);
}

.info-card p {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ===========================
   SEO Content
   =========================== */
.seo-content {
    margin-bottom: 40px;
    padding: 36px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
}

.seo-content h2 {
    font-size: 1.4rem;
    font-weight: 800;
    margin-bottom: 14px;
    color: var(--bg-dark);
}

.seo-content h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-top: 24px;
    margin-bottom: 8px;
    color: var(--bg-dark);
}

.seo-content p {
    color: var(--text-secondary);
    font-size: 0.92rem;
    line-height: 1.8;
    margin-bottom: 10px;
}

.seo-content strong {
    color: var(--text);
}

/* ===========================
   Alíquota Table
   =========================== */
.aliquota-table-wrapper {
    overflow-x: auto;
    margin: 16px 0;
    border-radius: var(--radius);
    border: 1px solid var(--border);
}

.aliquota-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.88rem;
}

.aliquota-table thead {
    background: var(--bg-dark);
    color: white;
}

.aliquota-table th {
    padding: 12px 14px;
    text-align: left;
    font-weight: 600;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.aliquota-table td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
    line-height: 1.5;
}

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

.aliquota-table tbody tr:hover {
    background: #f8fafc;
}

.highlight-green {
    color: var(--accent-dark) !important;
    font-weight: 600;
}

/* ===========================
   Ad In-Article
   =========================== */
.ad-in-article {
    margin: 32px 0;
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f8fafc;
    border-radius: var(--radius);
}

.ad-in-article .adsbygoogle {
    width: 100%;
}

.ad-slot .adsbygoogle {
    display: block;
}

.ad-slot ins {
    background: transparent;
}

/* ===========================
   FAQ
   =========================== */
.faq {
    margin-bottom: 48px;
}

.faq h2 {
    font-size: 1.4rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 20px;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.faq-item {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: box-shadow 0.2s;
}

.faq-item:hover {
    box-shadow: var(--shadow);
}

.faq-item summary {
    padding: 16px 20px;
    font-weight: 600;
    font-size: 0.92rem;
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-item summary::after {
    content: '+';
    font-size: 1.2rem;
    font-weight: 300;
    color: var(--text-light);
    transition: transform 0.2s;
}

.faq-item[open] summary::after {
    content: '−';
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item p {
    padding: 0 20px 16px;
    color: var(--text-secondary);
    font-size: 0.88rem;
    line-height: 1.7;
}

/* ===========================
   Footer
   =========================== */
.footer {
    background: var(--bg-dark);
    color: #94a3b8;
    padding: 28px 24px;
    text-align: center;
}

.footer-content p {
    font-size: 0.82rem;
    margin-bottom: 4px;
}

.footer-disclaimer {
    font-size: 0.72rem !important;
    color: #475569;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-top: 10px;
    flex-wrap: wrap;
}

.footer-links a {
    color: #94a3b8;
    text-decoration: none;
    font-size: 0.78rem;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: white;
    text-decoration: underline;
}

/* ===========================
   Cookie Consent Banner
   =========================== */
.cookie-consent {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 9999;
    background: var(--bg-dark);
    border-top: 1px solid #334155;
    padding: 18px 24px;
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.3);
    animation: slideUp 0.4s ease;
}

.cookie-consent.hidden {
    display: none;
}

@keyframes slideUp {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
}

.cookie-content {
    max-width: 900px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.cookie-content p {
    flex: 1;
    min-width: 260px;
    color: #cbd5e1;
    font-size: 0.82rem;
    line-height: 1.6;
}

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

.cookie-actions {
    display: flex;
    gap: 10px;
    flex-shrink: 0;
}

.cookie-btn {
    padding: 9px 20px;
    border-radius: 8px;
    font-size: 0.82rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
}

.cookie-btn-accept {
    background: var(--primary);
    color: white;
}

.cookie-btn-accept:hover {
    background: var(--primary-dark);
}

.cookie-btn-reject {
    background: transparent;
    color: #94a3b8;
    border: 1px solid #475569;
}

.cookie-btn-reject:hover {
    background: #1e293b;
    color: white;
}

/* ===========================
   Legal Pages
   =========================== */
.legal-page {
    padding-top: 40px;
    padding-bottom: 40px;
}

.legal-page h1 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 8px;
    color: var(--bg-dark);
}

.legal-updated {
    color: var(--text-light);
    font-size: 0.85rem;
    margin-bottom: 32px;
}

.legal-page h2 {
    font-size: 1.25rem;
    font-weight: 700;
    margin-top: 32px;
    margin-bottom: 12px;
    color: var(--bg-dark);
}

.legal-page h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-top: 20px;
    margin-bottom: 8px;
    color: var(--text);
}

.legal-page p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.8;
    margin-bottom: 12px;
}

.legal-page ul {
    margin: 8px 0 16px 24px;
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.8;
}

.legal-page a {
    color: var(--primary);
    text-decoration: none;
}

.legal-page a:hover {
    text-decoration: underline;
}

.back-link {
    display: inline-block;
    margin-bottom: 24px;
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
}

.back-link:hover {
    text-decoration: underline;
}

/* ===========================
   Responsive: Tablets
   =========================== */
@media (max-width: 1200px) {
    .ad-side {
        display: none;
    }
}

@media (max-width: 768px) {
    .main-content {
        padding: 0 14px;
    }

    .hero-form {
        padding: 28px 20px 24px;
        margin-top: 12px;
        margin-bottom: 24px;
        border-radius: var(--radius-lg);
    }

    .hero-compact h1 {
        font-size: 1.5rem;
    }

    .hero-tagline {
        font-size: 0.85rem;
    }

    .form-row {
        grid-template-columns: 1fr;
        gap: 14px;
    }

    .info-cards {
        grid-template-columns: 1fr;
        gap: 10px;
        margin-bottom: 28px;
    }

    .info-card {
        display: flex;
        align-items: center;
        gap: 14px;
        text-align: left;
        padding: 16px;
    }

    .info-icon {
        font-size: 1.5rem;
        margin-bottom: 0;
        flex-shrink: 0;
    }

    .info-card h3 {
        margin-bottom: 2px;
    }

    .results-grid {
        flex-direction: column;
    }

    .result-card.arrow-card {
        flex: 0 0 30px;
    }

    .arrow-icon {
        transform: rotate(90deg);
    }

    .savings-row {
        flex-direction: column;
        gap: 16px;
    }

    .results-actions {
        flex-direction: column;
    }

    .btn-secondary,
    .btn-share {
        width: 100%;
        text-align: center;
    }

    .ad-top,
    .ad-bottom {
        min-height: 60px;
    }

    .seo-content {
        padding: 22px 16px;
        border-radius: var(--radius-lg);
    }

    .aliquota-table {
        font-size: 0.78rem;
    }

    .aliquota-table th,
    .aliquota-table td {
        padding: 9px 10px;
    }

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

    .cookie-actions {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-compact h1 {
        font-size: 1.3rem;
    }

    .result-value {
        font-size: 1.3rem;
    }

    .saving-value {
        font-size: 1.1rem;
    }

    .saving-item.highlight .saving-value {
        font-size: 1.3rem;
    }
}