/* ==========================================================================
   GOLDEN NEST MANAGEMENT SYSTEMS LTD (GNMS) - OFFICIAL DESIGN SYSTEM
   ========================================================================== */

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

:root {
  /* Brand Colors */
  --navy-dark: #0A1128;
  --navy-main: #0F172A;
  --navy-light: #1E293B;
  --navy-surface: #1E293B80;

  --gold-primary: #D4AF37;
  --gold-light: #F7D070;
  --gold-dark: #A88118;
  --gold-gradient: linear-gradient(135deg, #F7D070 0%, #D4AF37 50%, #A88118 100%);
  --gold-glow: rgba(212, 175, 55, 0.25);
  --gold-border: rgba(212, 175, 55, 0.3);

  /* Backgrounds & Text */
  --bg-page: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-muted: #F1F5F9;

  --text-main: #0F172A;
  --text-muted: #475569;
  --text-white: #FFFFFF;
  --text-gold: #D4AF37;
  --border-light: #E2E8F0;

  /* Fonts */
  --font-heading: 'Outfit', 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  /* Shadows & Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  --shadow-sm: 0 2px 4px rgba(10, 17, 40, 0.05);
  --shadow-md: 0 10px 25px -5px rgba(10, 17, 40, 0.08);
  --shadow-lg: 0 20px 40px -15px rgba(10, 17, 40, 0.12);
  --shadow-gold: 0 8px 25px rgba(212, 175, 55, 0.25);

  --transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Reset & Base Styles */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

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

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

a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
  outline: 2px solid var(--gold-primary);
  outline-offset: 3px;
}

ul {
  list-style: none;
}

img, svg {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Typography Utilities */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-main);
  line-height: 1.25;
  font-weight: 700;
}

.text-gold-gradient {
  background: var(--gold-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: rgba(212, 175, 55, 0.12);
  border: 1px solid var(--gold-border);
  color: var(--gold-dark);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 12px;
}

.section-tag-light {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid var(--gold-border);
  color: var(--gold-light);
}

.section-title {
  font-size: 2.25rem;
  font-weight: 800;
  margin-bottom: 16px;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto 40px auto;
}

/* Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

.btn-primary {
  background: var(--gold-gradient);
  color: var(--navy-dark);
  box-shadow: var(--shadow-gold);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 30px rgba(212, 175, 55, 0.4);
}

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

.btn-secondary:hover {
  background: var(--navy-light);
  border-color: var(--gold-primary);
  transform: translateY(-2px);
}

.btn-outline-gold {
  background: transparent;
  color: var(--gold-primary);
  border-color: var(--gold-primary);
}

.btn-outline-gold:hover {
  background: var(--gold-primary);
  color: var(--navy-dark);
  transform: translateY(-2px);
}

.btn-whatsapp {
  background: #25D366;
  color: #FFFFFF;
  box-shadow: 0 8px 25px rgba(37, 211, 102, 0.3);
}

.btn-whatsapp:hover {
  background: #128C7E;
  transform: translateY(-2px);
}

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(10, 17, 40, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(212, 175, 55, 0.15);
  transition: var(--transition);
}

.header.scrolled {
  background: rgba(10, 17, 40, 0.98);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 84px;
}

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

.nav-brand img {
  height: 48px;
  width: auto;
}

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

.nav-link {
  color: rgba(255, 255, 255, 0.85);
  font-weight: 500;
  font-size: 0.98rem;
  position: relative;
  padding: 8px 0;
}

.nav-link:hover,
.nav-link.active {
  color: var(--gold-light);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--gold-gradient);
  transition: var(--transition);
  border-radius: 2px;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

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

.mobile-toggle {
  display: none;
  background: transparent;
  border: none;
  color: var(--text-white);
  font-size: 1.6rem;
  cursor: pointer;
  padding: 8px;
}

/* Hero Section */
.hero {
  position: relative;
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy-main) 60%, var(--navy-light) 100%);
  color: var(--text-white);
  padding: 160px 0 100px 0;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--gold-glow) 0%, transparent 70%);
  pointer-events: none;
}

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

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-title {
  font-size: 3.25rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 24px;
}

.hero-description {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.82);
  margin-bottom: 36px;
  max-width: 580px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}

.hero-graphic {
  position: relative;
  z-index: 2;
  display: flex;
  justify-content: center;
}

.hero-card-preview {
  background: rgba(30, 41, 59, 0.7);
  backdrop-filter: blur(16px);
  border: 1px solid var(--gold-border);
  border-radius: var(--radius-lg);
  padding: 32px;
  width: 100%;
  max-width: 480px;
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.4);
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.stat-card {
  background: rgba(10, 17, 40, 0.6);
  border: 1px solid rgba(212, 175, 55, 0.2);
  border-radius: var(--radius-md);
  padding: 18px;
  text-align: center;
}

.stat-number {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--gold-light);
}

.stat-label {
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
}

/* Feature & Service Cards */
.section {
  padding: 90px 0;
}

.bg-dark {
  background-color: var(--navy-dark);
  color: var(--text-white);
}

.bg-dark .section-title {
  color: var(--text-white);
}

.bg-muted {
  background-color: var(--bg-muted);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 36px;
}

.card {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  padding: 32px;
  transition: var(--transition);
  position: relative;
  display: flex;
  flex-direction: column;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--gold-primary);
}

.card-dark {
  background: var(--navy-main);
  border-color: rgba(212, 175, 55, 0.2);
  color: var(--text-white);
}

.card-dark:hover {
  border-color: var(--gold-primary);
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.card-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  background: rgba(212, 175, 55, 0.12);
  border: 1px solid var(--gold-border);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  color: var(--gold-primary);
  font-size: 1.5rem;
}

.card-title {
  font-size: 1.35rem;
  margin-bottom: 12px;
}

.card-text {
  color: var(--text-muted);
  font-size: 0.98rem;
  margin-bottom: 24px;
  flex-grow: 1;
}

.card-dark .card-text {
  color: rgba(255, 255, 255, 0.75);
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--gold-primary);
  font-weight: 600;
  font-size: 0.95rem;
}

.card-link:hover {
  gap: 12px;
  color: var(--gold-light);
}

/* Products Section Showcase */
.product-showcase {
  background: var(--navy-main);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gold-border);
  padding: 40px;
  margin-bottom: 40px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  box-shadow: var(--shadow-lg);
}

.product-badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  background: var(--gold-gradient);
  color: var(--navy-dark);
  font-size: 0.8rem;
  font-weight: 700;
  margin-bottom: 16px;
}

.product-features {
  margin: 20px 0 28px 0;
}

.product-feature-item {
  display: flex;
  align-items: center;
  gap: 10px;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 10px;
  font-size: 0.95rem;
}

.product-feature-item svg {
  color: var(--gold-primary);
  flex-shrink: 0;
}

.product-illustration {
  background: rgba(10, 17, 40, 0.8);
  border-radius: var(--radius-md);
  border: 1px solid rgba(212, 175, 55, 0.2);
  padding: 30px;
  text-align: center;
}

/* Portfolio Filters */
.filter-tabs {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 10px 22px;
  border-radius: var(--radius-full);
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  color: var(--text-main);
  font-weight: 600;
  font-size: 0.92rem;
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--navy-main);
  color: var(--gold-light);
  border-color: var(--gold-primary);
  box-shadow: var(--shadow-sm);
}

.tag-badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  background: var(--bg-muted);
  color: var(--text-muted);
  font-size: 0.78rem;
  font-weight: 600;
  margin-right: 6px;
  margin-bottom: 6px;
}

/* Contact Page & Form */
.contact-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 40px;
}

.contact-info-card {
  background: var(--navy-main);
  border: 1px solid var(--gold-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  color: var(--text-white);
}

.contact-method {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 28px;
}

.contact-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(212, 175, 55, 0.15);
  border: 1px solid var(--gold-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--gold-primary);
  flex-shrink: 0;
}

.contact-form-wrapper {
  background: var(--bg-surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  padding: 40px;
  box-shadow: var(--shadow-md);
}

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

.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.92rem;
  margin-bottom: 8px;
  color: var(--text-main);
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  font-family: var(--font-body);
  font-size: 0.98rem;
  color: var(--text-main);
  background: var(--bg-page);
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--gold-primary);
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.2);
  background: var(--bg-surface);
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

.form-error {
  color: #E11D48;
  font-size: 0.82rem;
  margin-top: 6px;
  display: none;
}

/* Call to Action Banner */
.cta-banner {
  background: linear-gradient(135deg, var(--navy-dark) 0%, var(--navy-main) 100%);
  border: 1px solid var(--gold-border);
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gold-gradient);
}

.cta-title {
  font-size: 2.2rem;
  color: var(--text-white);
  margin-bottom: 16px;
}

.cta-text {
  color: rgba(255, 255, 255, 0.8);
  font-size: 1.1rem;
  max-width: 600px;
  margin: 0 auto 32px auto;
}

/* Footer */
.footer {
  background: var(--navy-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 70px 0 30px 0;
  border-top: 1px solid rgba(212, 175, 55, 0.15);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 40px;
  margin-bottom: 50px;
}

.footer-brand img {
  height: 44px;
  margin-bottom: 16px;
}

.footer-desc {
  font-size: 0.92rem;
  line-height: 1.6;
  margin-bottom: 20px;
}

.footer-title {
  color: var(--text-white);
  font-size: 1.1rem;
  margin-bottom: 20px;
  position: relative;
  padding-bottom: 8px;
}

.footer-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 2px;
  background: var(--gold-gradient);
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.92rem;
}

.footer-links a:hover {
  color: var(--gold-light);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding-top: 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.88rem;
}

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 30px;
  right: 30px;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--gold-gradient);
  color: var(--navy-dark);
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: var(--shadow-gold);
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
  z-index: 99;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-4px);
}

/* Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}