/* ========================================
   IRONBUILD CONSTRUCTION — Styles
   ======================================== */

:root {
  --primary: #d97706;
  --primary-dark: #b45309;
  --primary-light: #fbbf24;
  --dark: #0f172a;
  --dark-2: #1e293b;
  --dark-3: #334155;
  --gray: #64748b;
  --gray-light: #94a3b8;
  --light: #f8fafc;
  --light-2: #f1f5f9;
  --light-3: #e2e8f0;
  --white: #ffffff;
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --shadow: 0 1px 3px rgba(0,0,0,0.08), 0 4px 12px rgba(0,0,0,0.04);
  --shadow-lg: 0 4px 24px rgba(0,0,0,0.08), 0 12px 48px rgba(0,0,0,0.06);
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: var(--dark);
  background: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

a {
  text-decoration: none;
  color: inherit;
  transition: var(--transition);
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  border: 2px solid transparent;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary);
  color: var(--white);
  border-color: var(--primary);
}
.btn-primary:hover {
  background: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 16px rgba(217, 119, 6, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.3);
}
.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.6);
}

.btn-nav {
  background: var(--primary);
  color: var(--white) !important;
  padding: 10px 24px;
  border-radius: var(--radius-sm);
}
.btn-nav:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
}

.btn-lg {
  padding: 16px 36px;
  font-size: 1.05rem;
}

.btn-full {
  width: 100%;
}

/* ---- Navigation ---- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: var(--transition);
}

.nav.scrolled {
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(20px);
  padding: 10px 0;
  box-shadow: 0 2px 20px rgba(0,0,0,0.15);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.3rem;
  letter-spacing: 2px;
  color: var(--white);
}

.logo-icon {
  width: 36px;
  height: 36px;
  color: var(--primary-light);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-links a {
  color: rgba(255,255,255,0.8);
  font-weight: 500;
  font-size: 0.95rem;
}
.nav-links a:hover {
  color: var(--white);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

/* ---- Hero ---- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: var(--dark);
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(15,23,42,0.97) 0%, rgba(30,41,59,0.85) 50%, rgba(217,119,6,0.15) 100%);
  z-index: 1;
}

.hero-bg::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 70% 20%, rgba(217,119,6,0.12) 0%, transparent 60%),
    radial-gradient(ellipse at 20% 80%, rgba(217,119,6,0.06) 0%, transparent 50%);
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
  background-size: 60px 60px;
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 140px 24px 80px;
}

.hero-badge {
  display: inline-block;
  padding: 8px 20px;
  background: rgba(217,119,6,0.15);
  border: 1px solid rgba(217,119,6,0.3);
  border-radius: 100px;
  color: var(--primary-light);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.5px;
  margin-bottom: 28px;
}

.hero h1 {
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 900;
  line-height: 1.08;
  color: var(--white);
  margin-bottom: 24px;
  letter-spacing: -1.5px;
}

.text-accent {
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.2rem;
  color: rgba(255,255,255,0.65);
  max-width: 540px;
  line-height: 1.7;
  margin-bottom: 40px;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 64px;
}

.hero-stats {
  display: flex;
  gap: 48px;
  padding-top: 40px;
  border-top: 1px solid rgba(255,255,255,0.08);
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.5px;
}

.stat-label {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.5);
  font-weight: 500;
}

/* ---- Section Common ---- */
.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 60px;
}

.section-tag {
  display: inline-block;
  padding: 6px 16px;
  background: rgba(217,119,6,0.1);
  color: var(--primary);
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 16px;
  color: var(--dark);
}

.section-header p {
  color: var(--gray);
  font-size: 1.1rem;
}

/* ---- Services ---- */
.services {
  padding: 120px 0;
  background: var(--light);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.service-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 36px 28px;
  transition: var(--transition);
  border: 1px solid var(--light-3);
}
.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.service-icon {
  width: 56px;
  height: 56px;
  background: rgba(217,119,6,0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  color: var(--primary);
}
.service-icon svg {
  width: 28px;
  height: 28px;
}

.service-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}

.service-card p {
  color: var(--gray);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ---- About ---- */
.about {
  padding: 120px 0;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-visual {
  position: relative;
}

.about-image-block {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4/3;
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-2) 100%);
}

.about-img-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.5);
  gap: 16px;
}
.about-img-placeholder svg {
  width: 80px;
  height: 80px;
}
.about-img-placeholder span {
  font-weight: 600;
  font-size: 1.1rem;
  color: rgba(255,255,255,0.6);
}

.about-experience-badge {
  position: absolute;
  bottom: -24px;
  right: -24px;
  background: var(--primary);
  color: var(--white);
  padding: 24px 32px;
  border-radius: var(--radius);
  text-align: center;
  box-shadow: var(--shadow-lg);
}
.big-number {
  display: block;
  font-size: 2.2rem;
  font-weight: 900;
  letter-spacing: -1px;
}
.about-experience-badge span {
  font-size: 0.85rem;
  font-weight: 500;
  opacity: 0.9;
}

.about-content .section-tag {
  margin-bottom: 16px;
}

.about-content h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 24px;
  line-height: 1.2;
}

.about-content p {
  color: var(--gray);
  margin-bottom: 16px;
  font-size: 1.02rem;
  line-height: 1.7;
}

.about-list {
  list-style: none;
  margin-top: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.about-list li {
  display: flex;
  align-items: center;
  gap: 12px;
  font-weight: 500;
  font-size: 0.95rem;
}

.about-list svg {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  color: var(--primary);
}

/* ---- Projects ---- */
.projects {
  padding: 120px 0;
  background: var(--light);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: auto auto;
  gap: 20px;
}

.project-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
  cursor: pointer;
  background: var(--dark-2);
}

.project-card-large {
  grid-row: span 2;
  aspect-ratio: auto;
}

.project-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--dark) 0%, var(--dark-3) 100%);
  color: rgba(255,255,255,0.3);
}
.project-placeholder svg {
  width: 60px;
  height: 60px;
}

.project-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 24px;
  background: linear-gradient(transparent, rgba(0,0,0,0.85));
  color: var(--white);
  transform: translateY(20px);
  opacity: 0;
  transition: var(--transition);
}
.project-card:hover .project-overlay {
  transform: translateY(0);
  opacity: 1;
}

.project-type {
  display: inline-block;
  padding: 4px 12px;
  background: var(--primary);
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 8px;
}

.project-overlay h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.project-overlay p {
  font-size: 0.85rem;
  opacity: 0.7;
}

/* ---- Testimonials ---- */
.testimonials {
  padding: 120px 0;
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}

.testimonial-card {
  background: var(--white);
  border: 1px solid var(--light-3);
  border-radius: var(--radius);
  padding: 32px;
  transition: var(--transition);
}
.testimonial-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: transparent;
}

.stars {
  color: var(--primary);
  font-size: 1.2rem;
  margin-bottom: 16px;
  letter-spacing: 2px;
}

.testimonial-card > p {
  color: var(--gray);
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 24px;
  font-style: italic;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  color: var(--white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
}

.testimonial-author strong {
  display: block;
  font-size: 0.95rem;
}
.testimonial-author span {
  font-size: 0.8rem;
  color: var(--gray-light);
}

/* ---- Contact ---- */
.contact {
  padding: 120px 0;
  background: var(--light);
}

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

.contact-info .section-tag {
  margin-bottom: 16px;
}

.contact-info h2 {
  font-size: clamp(2rem, 4vw, 2.6rem);
  font-weight: 800;
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.contact-info > p {
  color: var(--gray);
  font-size: 1.05rem;
  margin-bottom: 36px;
  line-height: 1.7;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-icon {
  width: 48px;
  height: 48px;
  flex-shrink: 0;
  background: rgba(217,119,6,0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}
.contact-icon svg {
  width: 22px;
  height: 22px;
}

.contact-item strong {
  display: block;
  font-size: 0.9rem;
  margin-bottom: 2px;
}
.contact-item a,
.contact-item span {
  color: var(--gray);
  font-size: 0.95rem;
}
.contact-item a:hover {
  color: var(--primary);
}

/* ---- Form ---- */
.contact-form {
  background: var(--white);
  border-radius: var(--radius-lg);
  padding: 40px;
  box-shadow: var(--shadow);
  border: 1px solid var(--light-3);
}

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

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 8px;
  color: var(--dark);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  border: 1.5px solid var(--light-3);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.95rem;
  transition: var(--transition);
  background: var(--light);
  color: var(--dark);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(217,119,6,0.12);
  background: var(--white);
}

.form-group textarea {
  resize: vertical;
  min-height: 100px;
}

.form-group select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2364748b' viewBox='0 0 16 16'%3E%3Cpath d='M4 6l4 4 4-4'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
}

/* ---- Footer ---- */
.footer {
  background: var(--dark);
  color: rgba(255,255,255,0.6);
  padding: 80px 0 0;
}

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

.footer-brand .logo {
  margin-bottom: 16px;
}

.footer-brand p {
  font-size: 0.95rem;
  line-height: 1.7;
  max-width: 320px;
}

.footer-links h4 {
  color: var(--white);
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.footer-links a {
  display: block;
  padding: 6px 0;
  font-size: 0.9rem;
  color: rgba(255,255,255,0.5);
}
.footer-links a:hover {
  color: var(--primary-light);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 0;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 0.85rem;
}

/* ---- Animations ---- */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---- Responsive ---- */
@media (max-width: 968px) {
  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .about-experience-badge {
    right: 16px;
    bottom: -16px;
  }

  .projects-grid {
    grid-template-columns: 1fr 1fr;
  }
  .project-card-large {
    grid-row: span 1;
    aspect-ratio: 4/3;
  }

  .footer-content {
    grid-template-columns: 1fr 1fr;
    gap: 32px;
  }
  .footer-brand {
    grid-column: span 2;
  }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background: var(--dark);
    flex-direction: column;
    align-items: flex-start;
    padding: 80px 32px 32px;
    gap: 24px;
    transition: var(--transition);
    box-shadow: -4px 0 24px rgba(0,0,0,0.3);
  }
  .nav-links.active {
    right: 0;
  }
  .nav-toggle {
    display: flex;
    z-index: 1001;
  }

  .hero-content {
    padding: 120px 24px 60px;
  }

  .hero-stats {
    flex-direction: column;
    gap: 20px;
  }

  .hero-actions {
    flex-direction: column;
    margin-bottom: 40px;
  }
  .hero-actions .btn {
    text-align: center;
  }

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

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

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

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

  .contact-form {
    padding: 28px 24px;
  }

  .footer-content {
    grid-template-columns: 1fr;
  }
  .footer-brand {
    grid-column: span 1;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .project-overlay {
    transform: translateY(0);
    opacity: 1;
  }
}