/* ================================
   KATALUX ROOFERS LANDING PAGE
   Paleta: Navy #0A1628, Âmbar #F59E0B, Teal #0D9488, Branco #FFFFFF
   Tipografia: Montserrat (headings), Source Sans Pro (body)
   ================================ */

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

:root {
    --navy: #0A1628;
    --amber: #F59E0B;
    --teal: #0D9488;
    --white: #FFFFFF;
    --gray-light: #F3F4F6;
    --gray-medium: #6B7280;
    --gray-dark: #374151;
    
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Source Sans Pro', sans-serif;
    
    --transition: all 0.3s ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 18px;
    line-height: 1.7;
    color: var(--gray-dark);
    background: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    color: var(--navy);
}

h1 {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
}

h2 {
    font-size: 2.8rem;
    margin-bottom: 1.2rem;
}

h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

/* Buttons */
.cta-button, .cta-button-nav, .cta-button-large {
    display: inline-block;
    padding: 16px 32px;
    background: var(--amber);
    color: var(--white);
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: 1.1rem;
    text-decoration: none;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.cta-button:hover, .cta-button-nav:hover, .cta-button-large:hover {
    background: #D97706;
    transform: translateY(-2px);
    box-shadow: 0 8px 16px rgba(249, 115, 22, 0.3);
}

.cta-button-large {
    padding: 20px 48px;
    font-size: 1.3rem;
}

/* ================================
   NAVIGATION
   ================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background: var(--navy);
    padding: 16px 0;
    z-index: 1000;
    box-shadow: 0 2px 12px rgba(0,0,0,0.1);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-img {
    height: 50px;
    width: auto;
}

.nav-links {
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-links a {
    color: var(--white);
    text-decoration: none;
    font-family: var(--font-heading);
    font-weight: 500;
    font-size: 1rem;
    transition: var(--transition);
}

.nav-links a:not(.cta-button-nav):hover {
    color: var(--amber);
}

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    cursor: pointer;
}

.hamburger span {
    width: 28px;
    height: 3px;
    background: var(--white);
    border-radius: 2px;
    transition: var(--transition);
}

/* ================================
   HERO SECTION
   ================================ */
.hero {
    background: linear-gradient(135deg, var(--navy) 0%, #1a2847 100%);
    padding: 140px 0 80px;
    color: var(--white);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.hero-headline {
    font-size: 3.5rem;
    color: var(--white);
    margin-bottom: 24px;
    line-height: 1.15;
}

.hero-subheadline {
    font-size: 1.4rem;
    color: var(--gray-light);
    margin-bottom: 32px;
    font-weight: 400;
}

.hero-stats {
    display: flex;
    gap: 40px;
    margin-top: 40px;
}

.stat {
    display: flex;
    flex-direction: column;
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: var(--amber);
    line-height: 1;
}

.stat-label {
    font-size: 0.95rem;
    color: var(--gray-light);
    margin-top: 8px;
}

/* Hero Form */
.form-card {
    background: var(--white);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 16px 48px rgba(0,0,0,0.2);
}

.form-card h3 {
    color: var(--navy);
    font-size: 1.8rem;
    margin-bottom: 12px;
}

.form-subtitle {
    color: var(--gray-medium);
    font-size: 1rem;
    margin-bottom: 28px;
}

.lead-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.lead-form input {
    padding: 16px;
    font-size: 1rem;
    border: 2px solid #E5E7EB;
    border-radius: 6px;
    font-family: var(--font-body);
    transition: var(--transition);
}

.lead-form input:focus {
    outline: none;
    border-color: var(--amber);
    box-shadow: 0 0 0 3px rgba(249, 115, 22, 0.1);
}

.lead-form button {
    width: 100%;
}

.form-privacy {
    font-size: 0.85rem;
    color: var(--gray-medium);
    text-align: center;
    margin-top: 12px;
}

/* ================================
   PAIN SECTION
   ================================ */
.pain-section {
    padding: 100px 0;
    background: var(--gray-light);
}

.section-title {
    text-align: center;
    font-size: 3rem;
    color: var(--navy);
    margin-bottom: 16px;
}

.section-intro {
    text-align: center;
    font-size: 1.3rem;
    color: var(--gray-medium);
    max-width: 700px;
    margin: 0 auto 60px;
}

.pain-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
    margin-bottom: 60px;
}

.pain-card {
    background: var(--white);
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0,0,0,0.08);
    transition: var(--transition);
}

.pain-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0,0,0,0.12);
}

.pain-icon {
    font-size: 3rem;
    margin-bottom: 20px;
}

.pain-card h3 {
    color: var(--navy);
    font-size: 1.6rem;
    margin-bottom: 16px;
}

.pain-card p {
    color: var(--gray-dark);
    font-size: 1.05rem;
    line-height: 1.7;
}

.pain-callout {
    background: var(--navy);
    padding: 48px;
    border-radius: 12px;
    text-align: center;
}

.pain-callout p {
    font-size: 1.6rem;
    color: var(--white);
    line-height: 1.6;
}

.pain-callout strong {
    color: var(--amber);
    font-weight: 700;
}

/* ================================
   DIAGNOSIS SECTION
   ================================ */
.diagnosis-section {
    padding: 100px 0;
    background: var(--white);
}

.diagnosis-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    margin-bottom: 60px;
}

.diagnosis-item {
    text-align: center;
    padding: 32px 24px;
    background: var(--gray-light);
    border-radius: 12px;
    border-top: 4px solid var(--teal);
}

.diagnosis-stat {
    font-family: var(--font-heading);
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--teal);
    margin-bottom: 16px;
}

.diagnosis-item p {
    font-size: 1rem;
    color: var(--gray-dark);
    line-height: 1.6;
}

.diagnosis-insight {
    background: linear-gradient(135deg, var(--teal) 0%, #0D9488 100%);
    padding: 48px;
    border-radius: 12px;
    color: var(--white);
    text-align: center;
}

.diagnosis-insight h3 {
    color: var(--white);
    font-size: 2rem;
    margin-bottom: 16px;
}

.diagnosis-insight p {
    font-size: 1.2rem;
    line-height: 1.7;
}

/* ================================
   VISION SECTION
   ================================ */
.vision-section {
    padding: 100px 0;
    background: var(--navy);
    color: var(--white);
}

.section-title-white {
    text-align: center;
    font-size: 3rem;
    color: var(--white);
    margin-bottom: 16px;
}

.section-intro-white {
    text-align: center;
    font-size: 1.3rem;
    color: var(--gray-light);
    max-width: 700px;
    margin: 0 auto 60px;
}

.comparison-table {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    margin-bottom: 60px;
}

.comparison-column {
    background: rgba(255,255,255,0.05);
    padding: 40px;
    border-radius: 12px;
    border: 2px solid transparent;
    transition: var(--transition);
}

.old-way {
    border-color: #EF4444;
}

.katalux-way {
    border-color: var(--amber);
}

.comparison-column h3 {
    color: var(--white);
    font-size: 1.8rem;
    margin-bottom: 24px;
}

.comparison-column ul {
    list-style: none;
}

.comparison-column li {
    padding: 16px 0;
    font-size: 1.1rem;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.comparison-column li:last-child {
    border-bottom: none;
}

.vision-promise {
    text-align: center;
    padding: 60px 40px;
    background: rgba(249, 115, 22, 0.1);
    border-radius: 12px;
    border: 2px solid var(--amber);
}

.vision-promise h3 {
    color: var(--white);
    font-size: 2.2rem;
    margin-bottom: 20px;
}

.vision-promise p {
    font-size: 1.2rem;
    color: var(--gray-light);
    line-height: 1.7;
    max-width: 800px;
    margin: 0 auto;
}

/* ================================
   PRICING SECTION
   ================================ */
.pricing-section {
    padding: 100px 0;
    background: var(--gray-light);
}

.pricing-card-main {
    background: var(--white);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0,0,0,0.12);
    max-width: 900px;
    margin: 0 auto;
}

.pricing-header {
    background: linear-gradient(135deg, var(--navy) 0%, #1a2847 100%);
    padding: 48px;
    text-align: center;
    color: var(--white);
}

.pricing-header h3 {
    color: var(--white);
    font-size: 2rem;
    margin-bottom: 16px;
}

.price {
    font-family: var(--font-heading);
    font-size: 4rem;
    font-weight: 700;
    color: var(--amber);
    margin: 24px 0;
}

.price span {
    font-size: 1.8rem;
    color: var(--gray-light);
}

.price-subtitle {
    font-size: 1rem;
    color: var(--gray-light);
}

.pricing-body {
    padding: 48px;
}

.pricing-included, .pricing-excluded {
    margin-bottom: 40px;
}

.pricing-included h4, .pricing-excluded h4 {
    font-size: 1.4rem;
    color: var(--navy);
    margin-bottom: 20px;
}

.pricing-included ul, .pricing-excluded ul {
    list-style: none;
}

.pricing-included li, .pricing-excluded li {
    padding: 12px 0;
    font-size: 1.05rem;
    border-bottom: 1px solid var(--gray-light);
    color: var(--gray-dark);
}

.pricing-included li strong {
    color: var(--navy);
    font-weight: 600;
}

.pricing-note {
    margin-top: 16px;
    font-size: 0.95rem;
    color: var(--gray-medium);
    font-style: italic;
}

.pricing-guarantee {
    background: rgba(14, 165, 233, 0.1);
    padding: 32px;
    border-radius: 8px;
    border-left: 4px solid var(--teal);
    margin-bottom: 32px;
}

.pricing-guarantee h4 {
    color: var(--teal);
    font-size: 1.3rem;
    margin-bottom: 12px;
}

.pricing-guarantee p {
    font-size: 1.05rem;
    color: var(--gray-dark);
}

.pricing-cta {
    text-align: center;
}

.pricing-cta-note {
    margin-top: 16px;
    font-size: 0.9rem;
    color: var(--gray-medium);
}

/* ================================
   METHOD SECTION
   ================================ */
.method-section {
    padding: 100px 0;
    background: var(--white);
}

.method-steps {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 60px;
}

.method-step {
    flex: 1;
    text-align: center;
    padding: 32px 24px;
    background: var(--gray-light);
    border-radius: 12px;
    border-top: 4px solid var(--amber);
    transition: var(--transition);
}

.method-step:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0,0,0,0.1);
}

.step-number {
    display: inline-block;
    width: 60px;
    height: 60px;
    line-height: 60px;
    background: var(--amber);
    color: var(--white);
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    border-radius: 50%;
    margin-bottom: 20px;
}

.method-step h3 {
    font-size: 1.5rem;
    color: var(--navy);
    margin-bottom: 12px;
}

.method-step p {
    font-size: 1rem;
    color: var(--gray-dark);
    line-height: 1.6;
}

.method-arrow {
    font-size: 2rem;
    color: var(--amber);
    font-weight: 700;
}

.method-timeline {
    background: var(--navy);
    padding: 48px;
    border-radius: 12px;
    color: var(--white);
}

.method-timeline h3 {
    color: var(--white);
    font-size: 2rem;
    text-align: center;
    margin-bottom: 32px;
}

.timeline-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
}

.timeline-item {
    text-align: center;
    padding: 24px;
    background: rgba(255,255,255,0.05);
    border-radius: 8px;
    border: 2px solid var(--amber);
}

.timeline-item strong {
    display: block;
    color: var(--amber);
    font-size: 1.1rem;
    margin-bottom: 8px;
}

/* ================================
   FAQ SECTION
   ================================ */
.faq-section {
    padding: 100px 0;
    background: var(--gray-light);
}

.faq-container {
    max-width: 900px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    margin-bottom: 16px;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 32px;
    cursor: pointer;
    transition: var(--transition);
}

.faq-question:hover {
    background: var(--gray-light);
}

.faq-question h3 {
    font-size: 1.3rem;
    color: var(--navy);
    margin: 0;
}

.faq-toggle {
    font-size: 2rem;
    font-weight: 300;
    color: var(--amber);
    transition: var(--transition);
}

.faq-item.active .faq-toggle {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 32px 24px;
    font-size: 1.05rem;
    color: var(--gray-dark);
    line-height: 1.7;
}

/* ================================
   FINAL CTA SECTION
   ================================ */
.final-cta-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--navy) 0%, #1a2847 100%);
    color: var(--white);
}

.final-cta-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.final-cta-text h2 {
    color: var(--white);
    font-size: 3rem;
    margin-bottom: 20px;
}

.final-cta-text p {
    font-size: 1.3rem;
    color: var(--gray-light);
    margin-bottom: 32px;
}

.final-cta-benefits {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.benefit-item {
    font-size: 1.1rem;
    color: var(--white);
}

/* ================================
   FOOTER
   ================================ */
.footer {
    background: var(--navy);
    color: var(--white);
    padding: 60px 0 24px;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 40px;
}

.footer-logo {
    height: 50px;
    width: auto;
    margin-bottom: 16px;
}

.footer-tagline {
    font-size: 1.1rem;
    color: var(--gray-light);
    margin-bottom: 8px;
}

.footer-manifesto {
    font-style: italic;
    color: var(--amber);
    font-size: 1.05rem;
}

.footer-column h4 {
    color: var(--white);
    font-size: 1.2rem;
    margin-bottom: 16px;
}

.footer-column a {
    display: block;
    color: var(--gray-light);
    text-decoration: none;
    margin-bottom: 12px;
    transition: var(--transition);
}

.footer-column a:hover {
    color: var(--amber);
}

.footer-column p {
    color: var(--gray-light);
    margin-bottom: 8px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 24px;
    text-align: center;
}

.footer-bottom p {
    color: var(--gray-light);
    font-size: 0.95rem;
}

/* ================================
   RESPONSIVE DESIGN
   ================================ */

@media (max-width: 1024px) {
    h1 {
        font-size: 2.8rem;
    }
    
    h2 {
        font-size: 2.2rem;
    }
    
    .hero-content {
        gap: 40px;
    }
    
    .comparison-table {
        gap: 32px;
    }
    
    .method-steps {
        flex-wrap: wrap;
    }
    
    .method-arrow {
        display: none;
    }
    
    .timeline-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    body {
        font-size: 16px;
    }
    
    h1 {
        font-size: 2.2rem;
    }
    
    h2 {
        font-size: 1.8rem;
    }
    
    h3 {
        font-size: 1.4rem;
    }
    
    .container {
        padding: 0 16px;
    }
    
    /* Navigation */
    .nav-links {
        position: fixed;
        top: 82px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 82px);
        background: var(--navy);
        flex-direction: column;
        justify-content: flex-start;
        padding: 40px 24px;
        gap: 24px;
        transition: left 0.3s ease;
    }
    
    .nav-links.active {
        left: 0;
    }
    
    .hamburger {
        display: flex;
    }
    
    /* Hero */
    .hero {
        padding: 100px 0 60px;
    }
    
    .hero-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .hero-headline {
        font-size: 2rem;
    }
    
    .hero-subheadline {
        font-size: 1.1rem;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: 24px;
    }
    
    .form-card {
        padding: 32px 24px;
    }
    
    /* Pain Grid */
    .pain-grid {
        grid-template-columns: 1fr;
    }
    
    /* Diagnosis */
    .diagnosis-grid {
        grid-template-columns: 1fr;
    }
    
    /* Comparison */
    .comparison-table {
        grid-template-columns: 1fr;
    }
    
    /* Method */
    .method-steps {
        flex-direction: column;
    }
    
    .timeline-grid {
        grid-template-columns: 1fr;
    }
    
    /* Final CTA */
    .final-cta-content {
        grid-template-columns: 1fr;
    }
    
    /* Footer */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.8rem;
    }
    
    h2 {
        font-size: 1.6rem;
    }
    
    .hero-headline {
        font-size: 1.8rem;
    }
    
    .stat-number {
        font-size: 2.2rem;
    }
    
    .price {
        font-size: 3rem;
    }
    
    .cta-button, .cta-button-nav, .cta-button-large {
        padding: 14px 24px;
        font-size: 1rem;
    }
}