/* ==========================================================================
   Satro Climate & Architectural Engineering - Luxury Design System
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800&family=Plus+Jakarta+Sans:wght@300;400;500;600;700&display=swap');

:root {
  /* Color Palette - Premium Luxury Dark Mode & Warm Accents */
  --bg-primary: #0B0F17;
  --bg-secondary: #111827;
  --bg-card: rgba(17, 24, 39, 0.7);
  --bg-card-hover: rgba(31, 41, 55, 0.85);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-glow: rgba(217, 119, 6, 0.15);
  
  --color-gold: #F59E0B;
  --color-gold-hover: #D97706;
  --color-gold-light: #FDE68A;
  --color-cyan: #38BDF8;
  --color-emerald: #10B981;
  --color-amber: #F59E0B;
  
  --text-main: #F9FAFB;
  --text-muted: #9CA3AF;
  --text-dark: #1F2937;
  
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;

  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  
  --shadow-glow: 0 10px 30px -10px rgba(245, 158, 11, 0.25);
  --shadow-card: 0 20px 40px rgba(0, 0, 0, 0.4);
}

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

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

body {
  background-color: var(--bg-primary);
  color: var(--text-main);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.text-gold {
  color: var(--color-gold);
}

.text-gradient {
  background: linear-gradient(135deg, #FFFFFF 30%, var(--color-gold-light) 70%, var(--color-gold) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-gradient-cyan {
  background: linear-gradient(135deg, #38BDF8 0%, #818CF8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* Glassmorphism utility */
.glass-panel {
  background: var(--bg-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card);
}

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Navigation Header */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 20px 0;
  transition: var(--transition-smooth);
}

.navbar.scrolled {
  padding: 12px 0;
  background: rgba(11, 15, 23, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--glass-border);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-main);
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 800;
}

.logo-badge {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-gold), #B45309);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  box-shadow: var(--shadow-glow);
}

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

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  transition: var(--transition-smooth);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-main);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: var(--transition-smooth);
}

.btn-gold {
  background: linear-gradient(135deg, var(--color-gold) 0%, var(--color-gold-hover) 100%);
  color: #0F172A;
  box-shadow: var(--shadow-glow);
}

.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 35px -5px rgba(245, 158, 11, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--glass-border);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.3);
}

.btn-wa {
  background: #25D366;
  color: #FFFFFF;
}

.btn-wa:hover {
  background: #1DA851;
  box-shadow: 0 10px 25px rgba(37, 211, 102, 0.3);
}

/* Mobile Nav Toggle */
.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-main);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Hero Section */
.hero {
  position: relative;
  min-height: 100vh;
  padding-top: 140px;
  padding-bottom: 80px;
  display: flex;
  align-items: center;
  background: radial-gradient(circle at 80% 20%, rgba(245, 158, 11, 0.08) 0%, transparent 50%),
              radial-gradient(circle at 10% 80%, rgba(56, 189, 248, 0.06) 0%, transparent 50%);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 18px;
  border-radius: var(--radius-full);
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.3);
  color: var(--color-gold-light);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 24px;
}

.hero-title {
  font-size: 3.5rem;
  margin-bottom: 24px;
  line-height: 1.15;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 36px;
  max-width: 580px;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--glass-border);
}

.stat-item h3 {
  font-size: 2rem;
  color: var(--color-gold);
}

.stat-item p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.hero-visual {
  position: relative;
}

.hero-image-wrapper {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card);
}

.hero-image-wrapper img {
  width: 100%;
  height: 520px;
  object-fit: cover;
  display: block;
}

.floating-badge {
  position: absolute;
  padding: 16px 20px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 14px;
  z-index: 10;
  animation: float 6s ease-in-out infinite;
}

.badge-top {
  top: -20px;
  right: -20px;
}

.badge-bottom {
  bottom: 30px;
  left: -30px;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-10px); }
}

/* Trust Badges / Christian Ethos Section */
.ethos-section {
  padding: 80px 0;
  background: var(--bg-secondary);
  position: relative;
}

.ethos-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.ethos-card {
  padding: 32px 24px;
  border-radius: var(--radius-md);
  transition: var(--transition-smooth);
}

.ethos-card:hover {
  transform: translateY(-5px);
  border-color: rgba(245, 158, 11, 0.4);
}

.ethos-icon {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-md);
  background: rgba(245, 158, 11, 0.1);
  color: var(--color-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.ethos-title {
  font-size: 1.2rem;
  margin-bottom: 10px;
}

.ethos-desc {
  font-size: 0.9rem;
  color: var(--text-muted);
}

/* Services Section */
.services-section {
  padding: 120px 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px;
}

.section-tag {
  color: var(--color-gold);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 12px;
  display: block;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 16px;
}

.section-subtitle {
  color: var(--text-muted);
  font-size: 1.05rem;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.service-card {
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-smooth);
}

.service-card:hover {
  transform: translateY(-8px);
  border-color: rgba(245, 158, 11, 0.5);
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.5), var(--shadow-glow);
}

.service-badge {
  position: absolute;
  top: 24px;
  right: 24px;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-gold-light);
}

.service-icon {
  font-size: 2.2rem;
  color: var(--color-gold);
  margin-bottom: 24px;
}

.service-title {
  font-size: 1.5rem;
  margin-bottom: 14px;
}

.service-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 24px;
}

.service-list {
  list-style: none;
  margin-bottom: 32px;
}

.service-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--text-main);
  margin-bottom: 10px;
}

.service-list li i {
  color: var(--color-emerald);
}

/* Calculator Section */
.calc-section {
  padding: 100px 0;
  background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
}

.calc-box {
  border-radius: var(--radius-lg);
  padding: 48px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.calc-controls {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-weight: 600;
  font-size: 0.95rem;
  display: flex;
  justify-content: space-between;
}

.form-select, .form-input {
  width: 100%;
  padding: 14px 18px;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 1rem;
  outline: none;
  transition: var(--transition-smooth);
}

.form-select:focus, .form-input:focus {
  border-color: var(--color-gold);
  background: rgba(255, 255, 255, 0.08);
}

.range-slider {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.15);
  outline: none;
  accent-color: var(--color-gold);
}

.calc-result-panel {
  background: rgba(15, 23, 42, 0.8);
  border-radius: var(--radius-md);
  padding: 36px;
  border: 1px solid rgba(245, 158, 11, 0.3);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.result-metric {
  text-align: center;
  padding: 24px 0;
  border-bottom: 1px dashed var(--glass-border);
}

.metric-value {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--color-gold);
  line-height: 1;
  margin-bottom: 8px;
}

.metric-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.result-breakdown {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 24px 0;
}

.breakdown-item {
  background: rgba(255, 255, 255, 0.03);
  padding: 16px;
  border-radius: var(--radius-sm);
  text-align: center;
}

.breakdown-value {
  font-weight: 700;
  color: var(--color-cyan);
  font-size: 1.1rem;
}

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

/* Architect Spotlight Section */
.architect-section {
  padding: 120px 0;
  position: relative;
}

.architect-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 60px;
  align-items: center;
}

.architect-card-visual {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid var(--glass-border);
}

.architect-avatar-box {
  background: linear-gradient(135deg, #1E293B, #0F172A);
  height: 480px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 40px;
  text-align: center;
}

.architect-avatar-icon {
  width: 120px;
  height: 120px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-gold), #B45309);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  color: #FFF;
  margin-bottom: 24px;
  box-shadow: var(--shadow-glow);
}

.architect-name {
  font-size: 1.8rem;
  margin-bottom: 6px;
}

.architect-role {
  color: var(--color-gold);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 16px;
}

.architect-quote {
  font-style: italic;
  color: var(--text-muted);
  font-size: 0.95rem;
  max-width: 320px;
}

.architect-info h2 {
  font-size: 2.6rem;
  margin-bottom: 24px;
}

.architect-info p {
  color: var(--text-muted);
  font-size: 1.05rem;
  margin-bottom: 24px;
}

.architect-features {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 36px;
}

.arch-feat {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.arch-feat i {
  color: var(--color-gold);
  font-size: 1.3rem;
  margin-top: 2px;
}

/* Portfolio Gallery */
.portfolio-section {
  padding: 120px 0;
  background: var(--bg-secondary);
}

.portfolio-tabs {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 48px;
  flex-wrap: wrap;
}

.tab-btn {
  padding: 10px 24px;
  border-radius: var(--radius-full);
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 0.9rem;
  cursor: pointer;
  transition: var(--transition-smooth);
}

.tab-btn.active, .tab-btn:hover {
  background: var(--color-gold);
  color: #0F172A;
  border-color: var(--color-gold);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 28px;
}

.portfolio-card {
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-primary);
  border: 1px solid var(--glass-border);
  transition: var(--transition-smooth);
}

.portfolio-card:hover {
  transform: translateY(-6px);
  border-color: rgba(245, 158, 11, 0.4);
}

.portfolio-img {
  height: 240px;
  background: #1E293B;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 3rem;
  position: relative;
}

.portfolio-tag-overlay {
  position: absolute;
  bottom: 12px;
  left: 12px;
  background: rgba(15, 23, 42, 0.85);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  color: var(--color-gold-light);
  font-weight: 600;
}

.portfolio-content {
  padding: 24px;
}

.portfolio-title {
  font-size: 1.25rem;
  margin-bottom: 8px;
}

.portfolio-loc {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Modal Popup */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(11, 15, 23, 0.85);
  backdrop-filter: blur(12px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
  transition: var(--transition-smooth);
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-container {
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  width: 90%;
  max-width: 600px;
  padding: 40px;
  position: relative;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.7);
}

.modal-close {
  position: absolute;
  top: 20px;
  right: 20px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.5rem;
  cursor: pointer;
}

/* Footer */
.footer {
  padding: 80px 0 40px;
  background: #070A0F;
  border-top: 1px solid var(--glass-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 60px;
}

.footer-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 16px;
  max-width: 320px;
}

.footer-title {
  font-size: 1.1rem;
  margin-bottom: 20px;
  color: var(--text-main);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 12px;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  transition: var(--transition-smooth);
}

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

.footer-bottom {
  text-align: center;
  padding-top: 32px;
  border-top: 1px solid var(--glass-border);
  color: var(--text-muted);
  font-size: 0.85rem;
}

/* Media Queries */
@media (max-width: 992px) {
  .hero-grid, .calc-box, .architect-grid, .footer-grid {
    grid-template-columns: 1fr;
  }
  .services-grid, .portfolio-grid, .ethos-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .hero-title {
    font-size: 2.75rem;
  }
  .nav-links {
    display: none;
  }
  .mobile-toggle {
    display: block;
  }
}

@media (max-width: 640px) {
  .services-grid, .portfolio-grid, .ethos-grid {
    grid-template-columns: 1fr;
  }
  .hero-stats {
    grid-template-columns: 1fr;
  }
}