/* ═══════════════════════════════════════════════
   Ferro Velho dos Mineiros — Landing Page
   Dark Industrial Premium Theme
   ═══════════════════════════════════════════════ */

:root {
    --bg-primary: #0a0f1a;
    --bg-secondary: #0f1b2d;
    --bg-card: #131d30;
    --bg-card-hover: #1a2742;
    --text-primary: #e8ecf4;
    --text-secondary: #8b99b3;
    --text-muted: #5a6b87;
    --accent: #f59e0b;
    --accent-light: #fbbf24;
    --accent-dark: #d97706;
    --green: #22c55e;
    --blue: #3b82f6;
    --border: rgba(255,255,255,0.06);
    --border-hover: rgba(255,255,255,0.12);
    --gradient: linear-gradient(135deg, #f59e0b, #ef4444, #f59e0b);
    --shadow: 0 8px 32px rgba(0,0,0,0.4);
    --radius: 16px;
    --radius-sm: 10px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

body {
    font-family: 'Inter', -apple-system, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

/* ═══ NAVBAR ═══ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 16px 0;
    transition: var(--transition);
    backdrop-filter: blur(0px);
}

.navbar.scrolled {
    background: rgba(10, 15, 26, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 10px 0;
}

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

.nav-logo-img {
    height: 48px;
    object-fit: contain;
    filter: brightness(1.1);
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
}

.nav-links a:hover { color: var(--text-primary); }
.nav-links a:hover::after { width: 100%; }

.nav-actions { display: flex; align-items: center; gap: 12px; }

.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}

.mobile-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
    border-radius: 2px;
}

/* ═══ BUTTONS ═══ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.95rem;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    white-space: nowrap;
}

.btn-sm { padding: 8px 16px; font-size: 0.85rem; }
.btn-lg { padding: 16px 32px; font-size: 1rem; }
.btn-block { width: 100%; justify-content: center; }

.btn-primary {
    background: var(--accent);
    color: #000;
    box-shadow: 0 4px 20px rgba(245, 158, 11, 0.3);
}
.btn-primary:hover {
    background: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(245, 158, 11, 0.4);
}

.btn-outline {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border-hover);
}
.btn-outline:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: rgba(245, 158, 11, 0.05);
}

.btn-glass {
    background: rgba(255,255,255,0.06);
    color: var(--text-primary);
    border: 1px solid var(--border);
    backdrop-filter: blur(10px);
}
.btn-glass:hover {
    background: rgba(255,255,255,0.1);
    border-color: var(--border-hover);
    transform: translateY(-2px);
}

.btn-whatsapp {
    background: #25D366;
    color: white;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.3);
}
.btn-whatsapp:hover {
    background: #20BD5A;
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(37, 211, 102, 0.4);
}

/* ═══ GRADIENT TEXT ═══ */
.gradient-text {
    background: var(--gradient);
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: shimmer 3s linear infinite;
}

@keyframes shimmer {
    0% { background-position: 0% center; }
    100% { background-position: 200% center; }
}

/* ═══ HERO ═══ */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 120px 24px 60px;
    background: url('/site-assets/hero-bg.png') center/cover no-repeat;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(10,15,26,0.92), rgba(15,27,45,0.88), rgba(10,15,26,0.95));
}

.hero-particles {
    position: absolute;
    inset: 0;
    overflow: hidden;
}

.hero-particles .particle {
    position: absolute;
    width: 3px;
    height: 3px;
    background: var(--accent);
    border-radius: 50%;
    opacity: 0.3;
    animation: float 8s infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0) scale(1); opacity: 0; }
    10% { opacity: 0.4; }
    50% { transform: translateY(-100vh) scale(0.5); opacity: 0.2; }
    100% { transform: translateY(-100vh) scale(0); opacity: 0; }
}

.hero-content {
    position: relative;
    text-align: center;
    max-width: 800px;
    z-index: 2;
}

.hero-badge {
    display: inline-block;
    padding: 8px 20px;
    background: rgba(245, 158, 11, 0.1);
    border: 1px solid rgba(245, 158, 11, 0.2);
    border-radius: 100px;
    font-size: 0.85rem;
    color: var(--accent);
    margin-bottom: 24px;
    font-weight: 500;
}

.hero-title {
    font-family: 'Outfit', sans-serif;
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 900;
    line-height: 1.1;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 560px;
    margin: 0 auto 36px;
    line-height: 1.7;
}

.hero-cta {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 60px;
}

.hero-stats {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 40px;
    padding: 30px 48px;
    background: rgba(255,255,255,0.03);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    backdrop-filter: blur(10px);
}

.stat { text-align: center; }

.stat-number {
    font-family: 'Outfit', sans-serif;
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--accent);
}

.stat-suffix {
    font-family: 'Outfit', sans-serif;
    font-size: 1.6rem;
    font-weight: 800;
    color: var(--accent);
}

.stat-label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 4px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
}

.hero-scroll {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
    z-index: 2;
}

.hero-scroll span {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    border-right: 2px solid var(--text-muted);
    border-bottom: 2px solid var(--text-muted);
    transform: rotate(45deg);
    margin: 8px auto 0;
    animation: bounce 2s infinite;
}

@keyframes bounce {
    0%, 100% { transform: rotate(45deg) translateY(0); }
    50% { transform: rotate(45deg) translateY(6px); }
}

/* ═══ SECTIONS ═══ */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-badge {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(245, 158, 11, 0.08);
    border: 1px solid rgba(245, 158, 11, 0.15);
    border-radius: 100px;
    font-size: 0.8rem;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 600;
    margin-bottom: 16px;
}

.section-title {
    font-family: 'Outfit', sans-serif;
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 800;
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
    max-width: 500px;
    margin: 0 auto;
}

/* ═══ SERVICES ═══ */
.services {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.service-card {
    position: relative;
    padding: 40px 32px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: var(--transition);
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: transparent;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-8px);
    border-color: var(--border-hover);
    box-shadow: var(--shadow);
}

.service-card:hover::before {
    background: var(--gradient);
}

.service-card.featured {
    border-color: rgba(245, 158, 11, 0.2);
    background: linear-gradient(135deg, var(--bg-card), rgba(245, 158, 11, 0.03));
}

.service-card.featured::before {
    background: var(--gradient);
}

.service-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    padding: 4px 12px;
    background: rgba(245, 158, 11, 0.15);
    color: var(--accent);
    border-radius: 100px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.service-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(245, 158, 11, 0.08);
    border-radius: 14px;
    margin-bottom: 24px;
    color: var(--accent);
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background: rgba(245, 158, 11, 0.15);
    transform: scale(1.05);
}

.service-card h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.3rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.service-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 20px;
}

.service-footer { margin-top: auto; }

.service-tag {
    padding: 4px 12px;
    background: rgba(34, 197, 94, 0.1);
    color: var(--green);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
}

/* ═══ MATERIALS ═══ */
.materials {
    padding: 100px 0;
    background: var(--bg-primary);
}

.materials-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 16px;
}

.material-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 32px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: var(--transition);
    cursor: default;
}

.material-card:hover {
    transform: translateY(-4px);
    border-color: rgba(245, 158, 11, 0.2);
    background: var(--bg-card-hover);
}

.material-icon {
    font-size: 2rem;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(245, 158, 11, 0.06);
    border-radius: 12px;
}

.material-card span {
    font-weight: 600;
    font-size: 0.9rem;
    text-align: center;
}

/* ═══ LOCATIONS ═══ */
.locations {
    padding: 100px 0;
    background: var(--bg-secondary);
}

.locations-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}

.location-card {
    padding: 36px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: var(--transition);
}

.location-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow);
}

.location-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 28px;
    flex-wrap: wrap;
}

.location-number {
    font-family: 'Outfit', sans-serif;
    font-size: 2rem;
    font-weight: 900;
    color: var(--accent);
    opacity: 0.3;
}

.location-header h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.4rem;
    font-weight: 700;
    flex: 1;
}

.location-badge {
    padding: 4px 12px;
    background: rgba(59, 130, 246, 0.1);
    color: var(--blue);
    border-radius: 100px;
    font-size: 0.75rem;
    font-weight: 600;
}

.location-body {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 24px;
}

.location-info {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.location-info svg {
    flex-shrink: 0;
    color: var(--accent);
    margin-top: 2px;
}

/* ═══ ACCESS ═══ */
.access {
    padding: 100px 0;
    background: var(--bg-primary);
}

.access-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

.access-card {
    position: relative;
    display: block;
    padding: 40px 32px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    text-decoration: none;
    color: var(--text-primary);
    transition: var(--transition);
    overflow: hidden;
}

.access-card:hover {
    transform: translateY(-6px);
    border-color: rgba(245, 158, 11, 0.2);
    box-shadow: 0 8px 40px rgba(245, 158, 11, 0.08);
}

.access-icon {
    width: 72px;
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(59, 130, 246, 0.08);
    border-radius: 16px;
    margin-bottom: 20px;
    color: var(--blue);
    transition: var(--transition);
}

.access-card:hover .access-icon {
    background: rgba(59, 130, 246, 0.15);
    transform: scale(1.05);
}

.access-card h3 {
    font-family: 'Outfit', sans-serif;
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.access-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.access-arrow {
    position: absolute;
    top: 32px;
    right: 32px;
    font-size: 1.5rem;
    color: var(--text-muted);
    transition: var(--transition);
}

.access-card:hover .access-arrow {
    color: var(--accent);
    transform: translateX(4px);
}

/* ═══ CTA ═══ */
.cta {
    position: relative;
    padding: 100px 0;
    background: var(--bg-secondary);
    overflow: hidden;
}

.cta-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(245,158,11,0.06), transparent 70%);
    pointer-events: none;
}

.cta-content {
    position: relative;
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
    z-index: 2;
}

.cta h2 {
    font-family: 'Outfit', sans-serif;
    font-size: clamp(2rem, 4vw, 2.8rem);
    font-weight: 800;
    margin-bottom: 16px;
}

.cta p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 36px;
    line-height: 1.7;
}

.cta-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ═══ FOOTER ═══ */
.footer {
    padding: 60px 0 30px;
    background: #060a14;
    border-top: 1px solid var(--border);
}

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

.footer-logo {
    height: 56px;
    margin-bottom: 16px;
    filter: brightness(0.8);
}

.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
    max-width: 320px;
}

.footer-links h4,
.footer-contact h4 {
    color: var(--text-primary);
    font-weight: 700;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 16px;
}

.footer-links a {
    display: block;
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    padding: 4px 0;
    transition: var(--transition);
}

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

.footer-contact p {
    color: var(--text-muted);
    font-size: 0.9rem;
    padding: 3px 0;
}

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

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

/* ═══ WHATSAPP FLOAT ═══ */
.whatsapp-float {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #25D366;
    border-radius: 50%;
    box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
    z-index: 999;
    transition: var(--transition);
    animation: pulse-green 2s infinite;
}

.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 30px rgba(37, 211, 102, 0.5);
}

@keyframes pulse-green {
    0%, 100% { box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4); }
    50% { box-shadow: 0 4px 30px rgba(37, 211, 102, 0.6), 0 0 0 10px rgba(37, 211, 102, 0.1); }
}

/* ═══ RESPONSIVE ═══ */
@media (max-width: 768px) {
    .nav-links { display: none; }
    .mobile-toggle { display: flex; }
    .nav-links.active {
        display: flex;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: rgba(10,15,26,0.98);
        backdrop-filter: blur(20px);
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid var(--border);
    }
    .btn-sm { display: none; }
    .services-grid { grid-template-columns: 1fr; }
    .materials-grid { grid-template-columns: repeat(2, 1fr); }
    .locations-grid { grid-template-columns: 1fr; }
    .access-grid { grid-template-columns: 1fr; }
    .hero-stats { flex-direction: column; gap: 16px; padding: 24px; }
    .stat-divider { width: 60px; height: 1px; }
    .footer-grid { grid-template-columns: 1fr; gap: 32px; }
    .hero-cta { flex-direction: column; align-items: center; }
}

@media (max-width: 480px) {
    .materials-grid { grid-template-columns: repeat(2, 1fr); gap: 10px; }
    .material-card { padding: 20px 12px; }
}