/* ============================================
   S. Subramanyam — Executive Portfolio
   Premium Design System
   ============================================ */

/* --- Custom Properties --- */
:root {
  --navy: #0a1628;
  --navy-light: #0f1f3a;
  --royal: #1e3a6e;
  --royal-light: #2b4c8c;
  --charcoal: #1a1a2e;
  --charcoal-light: #2d2d44;
  --gold: #c9a84c;
  --gold-light: #f0d080;
  --gold-dark: #a8882e;
  --white: #ffffff;
  --off-white: #f5f6fa;
  --gray-100: #f0f1f5;
  --gray-200: #e0e2e8;
  --gray-300: #c0c4d0;
  --gray-400: #8a8fa0;
  --gray-500: #5a5f70;
  --glass-bg: rgba(10, 22, 40, 0.72);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
  --font-heading: 'Playfair Display', Georgia, serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --max-width: 1200px;
  --nav-height: 72px;
  --transition: 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--navy);
  color: var(--off-white);
  line-height: 1.7;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
blockquote { font-style: italic; }

::selection {
  background: var(--gold);
  color: var(--navy);
}

::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--navy); }
::-webkit-scrollbar-thumb { background: var(--royal); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--gold); }

/* --- Typography --- */
h1, h2, h3, h4, h5 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
}

.section {
  padding: 100px 24px;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 64px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gold);
  background: rgba(201, 168, 76, 0.1);
  padding: 6px 18px;
  border-radius: 100px;
  border: 1px solid rgba(201, 168, 76, 0.2);
  margin-bottom: 20px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  color: var(--white);
  margin-bottom: 16px;
}

.section-line {
  width: 60px;
  height: 2px;
  background: linear-gradient(90deg, var(--gold), transparent);
  margin: 0 auto;
  border-radius: 2px;
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
}

/* --- Preloader --- */
#preloader {
  position: fixed;
  inset: 0;
  z-index: 99999;
  background: var(--navy);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

#preloader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-ring {
  width: 48px;
  height: 48px;
  border: 3px solid rgba(201, 168, 76, 0.1);
  border-top-color: var(--gold);
  border-radius: 50%;
  animation: spin 0.8s ease-in-out infinite;
  margin-bottom: 16px;
}

.loader-text {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  color: var(--gold);
  letter-spacing: 4px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* --- Navigation --- */
.glass-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 9999;
  padding: 0 24px;
  height: var(--nav-height);
  background: rgba(10, 22, 40, 0.6);
  backdrop-filter: blur(20px) saturate(1.2);
  -webkit-backdrop-filter: blur(20px) saturate(1.2);
  border-bottom: 1px solid var(--glass-border);
  transition: all var(--transition);
}

.glass-nav.scrolled {
  background: rgba(10, 22, 40, 0.88);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
}

.nav-container {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo-mark {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--white);
}

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

.logo-text {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--gray-300);
  letter-spacing: 0.5px;
}

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

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-300);
  position: relative;
  padding: 4px 0;
  transition: color var(--transition);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--gold);
  transition: width var(--transition);
}

.nav-link:hover { color: var(--white); }
.nav-link:hover::after { width: 100%; }

.nav-cta {
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: var(--navy) !important;
  padding: 8px 24px !important;
  border-radius: 100px;
  font-weight: 600;
  transition: transform var(--transition), box-shadow var(--transition);
}

.nav-cta::after { display: none; }
.nav-cta:hover { transform: scale(1.05); box-shadow: 0 4px 20px rgba(201, 168, 76, 0.3); }

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

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  border-radius: 2px;
  transition: all var(--transition);
}

.nav-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.nav-toggle.active span:nth-child(2) { opacity: 0; }
.nav-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* --- Hero --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 120px 24px 80px;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-orbe {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.25;
}

.orb-1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--royal), transparent);
  top: -200px;
  right: -200px;
  animation: float 12s ease-in-out infinite;
}

.orb-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, var(--gold), transparent);
  bottom: -200px;
  left: -150px;
  animation: float 15s ease-in-out infinite reverse;
  opacity: 0.15;
}

.orb-3 {
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, var(--royal-light), transparent);
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  animation: float 10s ease-in-out infinite;
  opacity: 0.1;
}

.grid-overlay {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 60px 60px;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33% { transform: translate(30px, -30px) scale(1.05); }
  66% { transform: translate(-20px, 20px) scale(0.95); }
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--gold);
  background: rgba(201, 168, 76, 0.1);
  border: 1px solid rgba(201, 168, 76, 0.25);
  padding: 8px 20px;
  border-radius: 100px;
  margin-bottom: 32px;
  backdrop-filter: blur(10px);
}

.hero-badge i { font-size: 0.7rem; }

.hero-title {
  margin-bottom: 24px;
}

.title-line {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.02em;
}

.title-sub {
  display: block;
  font-family: var(--font-body);
  font-size: clamp(1rem, 2vw, 1.35rem);
  font-weight: 300;
  color: var(--gray-300);
  margin-top: 12px;
  letter-spacing: 1px;
}

.hero-desc {
  font-size: clamp(0.95rem, 1.3vw, 1.1rem);
  color: var(--gray-300);
  max-width: 650px;
  margin: 0 auto 40px;
  line-height: 1.8;
}

.hero-desc strong { color: var(--white); font-weight: 600; }

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 24px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat-num {
  font-family: var(--font-heading);
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
}

.stat-suffix {
  font-family: var(--font-heading);
  font-size: clamp(1.2rem, 2vw, 1.6rem);
  font-weight: 700;
  color: var(--gold);
  line-height: 1;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--gray-400);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-top: 6px;
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: rgba(255,255,255,0.1);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  border-radius: 100px;
  font-size: 0.9rem;
  font-weight: 600;
  transition: all var(--transition);
  cursor: pointer;
}

.btn-primary {
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: var(--navy);
  box-shadow: 0 4px 20px rgba(201, 168, 76, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(201, 168, 76, 0.35);
}

.btn-outline {
  border: 1.5px solid rgba(255,255,255,0.2);
  color: var(--white);
  background: transparent;
}

.btn-outline:hover {
  border-color: var(--gold);
  color: var(--gold);
  transform: translateY(-2px);
}

.btn-large {
  padding: 16px 40px;
  font-size: 1rem;
}

.hero-scroll {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  margin-top: 60px;
}

.hero-scroll span {
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--gray-400);
}

.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--gold), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
  0%, 100% { opacity: 1; transform: scaleY(1); }
  50% { opacity: 0.3; transform: scaleY(0.5); }
}

/* --- Trusted Bar --- */
.trusted-bar {
  padding: 48px 24px;
  background: rgba(255,255,255,0.02);
  border-top: 1px solid var(--glass-border);
  border-bottom: 1px solid var(--glass-border);
}

.trusted-label {
  text-align: center;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--gray-400);
  margin-bottom: 24px;
}

.trusted-grid {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 32px 48px;
  flex-wrap: wrap;
}

.trusted-item {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--gray-300);
  opacity: 0.6;
  transition: opacity var(--transition);
  white-space: nowrap;
}

.trusted-item:hover { opacity: 1; color: var(--gold); }

/* --- About --- */
.about { background: var(--navy-light); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-intro {
  font-size: 1.1rem;
  color: var(--white);
  margin-bottom: 20px;
  line-height: 1.8;
}

.about-content p {
  color: var(--gray-300);
  margin-bottom: 16px;
  line-height: 1.8;
}

.about-content p strong { color: var(--white); }

.about-highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  margin-top: 28px;
}

.highlight-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: var(--gray-200);
}

.highlight-item i {
  font-size: 0.8rem;
  width: 20px;
  text-align: center;
}

.about-image-wrapper {
  position: relative;
  margin-bottom: 24px;
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.about-image {
  width: 100%;
  height: 380px;
  object-fit: cover;
  border-radius: var(--radius-lg);
  display: block;
  border: 1px solid var(--glass-border);
  transition: transform 0.6s ease, box-shadow 0.6s ease;
}

.about-image-wrapper:hover .about-image {
  transform: scale(1.03);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
}

.about-image-badge {
  position: absolute;
  bottom: 16px;
  left: 16px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(10, 22, 40, 0.8);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(201, 168, 76, 0.3);
  padding: 8px 16px;
  border-radius: 100px;
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--gold);
}

.about-image-badge i {
  font-size: 0.75rem;
  color: var(--gold);
}

.about-card-glow {
  position: relative;
}

.about-card-glow::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--gold), var(--royal), var(--gold));
  opacity: 0.3;
  filter: blur(8px);
  z-index: 0;
}

.about-card {
  position: relative;
  z-index: 1;
  background: rgba(10, 22, 40, 0.7);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 40px;
}

.about-card-header {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 24px;
}

.about-card-header h3 {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 2px;
}

.about-card blockquote {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  color: var(--gray-100);
  line-height: 1.7;
  margin-bottom: 24px;
  quotes: none;
}

.about-card-footer {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.about-signature {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  color: var(--gold);
}

.about-role {
  font-size: 0.8rem;
  color: var(--gray-400);
}

/* --- Expertise --- */
.expertise {
  background: var(--navy);
}

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

.expertise-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.expertise-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.expertise-card:hover::before { transform: scaleX(1); }

.expertise-card:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(201, 168, 76, 0.3);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.2);
}

.card-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: rgba(201, 168, 76, 0.1);
  border: 1px solid rgba(201, 168, 76, 0.2);
  margin-bottom: 20px;
  font-size: 1.3rem;
  color: var(--gold);
  transition: all var(--transition);
}

.expertise-card:hover .card-icon {
  background: rgba(201, 168, 76, 0.2);
  border-color: var(--gold);
  transform: scale(1.05);
}

.expertise-card h3 {
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 12px;
}

.expertise-card p {
  font-size: 0.88rem;
  color: var(--gray-400);
  line-height: 1.7;
  margin-bottom: 20px;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.card-tags li {
  font-size: 0.7rem;
  color: var(--gold);
  background: rgba(201, 168, 76, 0.08);
  border: 1px solid rgba(201, 168, 76, 0.15);
  padding: 4px 12px;
  border-radius: 100px;
}

/* --- Stats Section --- */
.stats-section {
  background: var(--navy-light);
  position: relative;
  overflow: hidden;
}

.stats-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 50%, rgba(30, 58, 110, 0.3), transparent 50%),
    radial-gradient(circle at 80% 50%, rgba(201, 168, 76, 0.1), transparent 50%);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  position: relative;
  z-index: 1;
}

.stats-card {
  text-align: center;
  padding: 40px 24px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.stats-card:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(201, 168, 76, 0.3);
  transform: translateY(-4px);
}

.stats-card i {
  font-size: 2rem;
  color: var(--gold);
  margin-bottom: 16px;
  opacity: 0.6;
}

.stats-number {
  display: block;
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 3vw, 3rem);
  font-weight: 700;
  color: var(--white);
  line-height: 1.1;
  margin-bottom: 8px;
}

.stats-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--gray-200);
  margin-bottom: 6px;
}

.stats-desc {
  font-size: 0.75rem;
  color: var(--gray-400);
}

/* --- Work / Case Studies --- */
.work { background: var(--navy); }

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

.work-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition);
}

.work-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 24px 48px rgba(0,0,0,0.3);
  border-color: rgba(201, 168, 76, 0.25);
}

.work-visual {
  height: 180px;
  background: var(--work-gradient);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  position: relative;
  gap: 12px;
}

.work-icon {
  font-size: 2.5rem;
  color: rgba(255,255,255,0.15);
  transition: all var(--transition);
}

.work-card:hover .work-icon {
  color: var(--gold);
  transform: scale(1.15);
}

.work-category {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--gray-300);
  background: rgba(0,0,0,0.3);
  padding: 4px 14px;
  border-radius: 100px;
  backdrop-filter: blur(10px);
}

.work-body {
  padding: 28px;
}

.work-body h3 {
  font-family: var(--font-body);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 10px;
}

.work-body p {
  font-size: 0.85rem;
  color: var(--gray-400);
  line-height: 1.7;
  margin-bottom: 20px;
}

.work-results {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.work-results li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: rgba(255,255,255,0.03);
  border-radius: 6px;
  font-size: 0.82rem;
}

.result-label { color: var(--gray-400); }
.result-value { color: var(--gold); font-weight: 600; }

.work-cta {
  text-align: center;
  margin-top: 48px;
}

.work-cta p {
  font-size: 1.05rem;
  color: var(--gray-300);
  margin-bottom: 20px;
}

/* --- Testimonials --- */
.testimonials {
  background: var(--navy-light);
}

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

.testimonial-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
}

.testimonial-card:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(201, 168, 76, 0.25);
  transform: translateY(-4px);
}

.testimonial-stars {
  display: flex;
  gap: 4px;
  margin-bottom: 16px;
}

.testimonial-stars i {
  color: var(--gold);
  font-size: 0.8rem;
}

.testimonial-card blockquote {
  font-size: 0.9rem;
  color: var(--gray-200);
  line-height: 1.7;
  flex: 1;
  quotes: none;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--glass-border);
}

.author-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--white);
  flex-shrink: 0;
}

.author-info {
  display: flex;
  flex-direction: column;
}

.author-info strong {
  font-size: 0.88rem;
  color: var(--white);
  font-weight: 600;
}

.author-info span {
  font-size: 0.75rem;
  color: var(--gray-400);
}

/* --- Certifications --- */
.certs {
  background: var(--navy);
}

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

.cert-card {
  text-align: center;
  padding: 36px 24px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  transition: all var(--transition);
}

.cert-card:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(201, 168, 76, 0.3);
  transform: translateY(-4px);
}

.cert-icon {
  font-size: 2.2rem;
  color: var(--gold);
  margin-bottom: 16px;
  opacity: 0.7;
  transition: all var(--transition);
}

.cert-card:hover .cert-icon {
  opacity: 1;
  transform: scale(1.1);
}

.cert-card h3 {
  font-family: var(--font-body);
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 8px;
}

.cert-card p {
  font-size: 0.8rem;
  color: var(--gray-400);
}

.certs-cta {
  text-align: center;
  margin-top: 40px;
}

.certs-cta p {
  font-size: 0.9rem;
  color: var(--gray-400);
  font-style: italic;
}

/* --- Contact --- */
.contact {
  background: var(--navy-light);
  position: relative;
  overflow: hidden;
}

.contact::before {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(201, 168, 76, 0.08), transparent);
  top: -200px;
  right: -200px;
  border-radius: 50%;
}

.contact-wrapper {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.contact-content .section-tag { display: inline-flex; }

.contact-desc {
  font-size: 1rem;
  color: var(--gray-300);
  margin: 20px 0 36px;
  line-height: 1.8;
  max-width: 500px;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 20px;
  margin-bottom: 32px;
}

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

.contact-item-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(201, 168, 76, 0.1);
  border: 1px solid rgba(201, 168, 76, 0.2);
  border-radius: var(--radius-sm);
  color: var(--gold);
  font-size: 1rem;
  flex-shrink: 0;
}

.contact-item-label {
  display: block;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--gray-400);
  margin-bottom: 4px;
}

.contact-item-value {
  font-size: 0.95rem;
  color: var(--white);
  transition: color var(--transition);
}

a.contact-item-value:hover { color: var(--gold); }

.contact-cta-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.contact-card-glow {
  position: relative;
}

.contact-card-glow::before {
  content: '';
  position: absolute;
  inset: -2px;
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, var(--gold), var(--royal), var(--gold));
  opacity: 0.3;
  filter: blur(8px);
  z-index: 0;
}

.contact-card {
  position: relative;
  z-index: 1;
  background: rgba(10, 22, 40, 0.7);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 40px;
  text-align: center;
}

.contact-card i {
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.contact-card blockquote {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  color: var(--gray-100);
  line-height: 1.7;
  margin-bottom: 24px;
}

.contact-card-footer {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.contact-signature {
  font-family: var(--font-heading);
  font-size: 1.05rem;
  color: var(--gold);
}

.contact-role {
  font-size: 0.8rem;
  color: var(--gray-400);
}

.contact-org {
  font-size: 0.75rem;
  color: var(--gray-500);
}

/* --- Footer --- */
.footer {
  background: var(--navy);
  border-top: 1px solid var(--glass-border);
  padding: 64px 24px 32px;
}

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

.footer-brand .nav-logo { margin-bottom: 12px; }

.footer-brand p {
  font-size: 0.85rem;
  color: var(--gray-400);
  margin-bottom: 4px;
}

.footer-tagline {
  font-size: 0.75rem;
  color: var(--gray-500);
  font-style: italic;
}

.footer-links h4,
.footer-contact h4 {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--white);
  margin-bottom: 20px;
}

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

.footer-links ul li a {
  font-size: 0.85rem;
  color: var(--gray-400);
  transition: color var(--transition);
}

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

.footer-email {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--gray-300);
  margin-bottom: 20px;
  transition: color var(--transition);
}

.footer-email:hover { color: var(--gold); }
.footer-email i { font-size: 0.75rem; }

.footer-social {
  display: flex;
  gap: 12px;
}

.social-link {
  width: 38px;
  height: 38px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--glass-border);
  color: var(--gray-300);
  font-size: 0.85rem;
  transition: all var(--transition);
}

.social-link:hover {
  background: var(--gold);
  border-color: var(--gold);
  color: var(--navy);
  transform: translateY(-2px);
}

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--glass-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-bottom p {
  font-size: 0.78rem;
  color: var(--gray-500);
}

.footer-bottom-links a {
  color: var(--gray-400);
  transition: color var(--transition);
}

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

.sep {
  margin: 0 8px;
  color: var(--gray-500);
}

/* --- Back to Top --- */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  z-index: 999;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--gold), var(--gold-dark));
  color: var(--navy);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  box-shadow: 0 4px 20px rgba(201, 168, 76, 0.3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all var(--transition);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 8px 30px rgba(201, 168, 76, 0.4);
}

/* --- Page Header (for individual pages) --- */
.page-hero {
  position: relative;
  padding: 140px 24px 80px;
  background: var(--navy);
  overflow: hidden;
  text-align: center;
}

.page-hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
  margin: 0 auto;
}

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

.page-hero-content h1 {
  font-size: clamp(2.2rem, 4vw, 3.2rem);
  color: var(--white);
  margin-bottom: 16px;
}

.page-hero-content p {
  font-size: 1rem;
  color: var(--gray-300);
  line-height: 1.7;
}

/* --- Page Content Expansion --- */
.page-section {
  padding: 80px 24px;
}

.page-section-alt {
  padding: 80px 24px;
  background: var(--navy-light);
}

.page-cta {
  text-align: center;
  padding: 64px 24px;
  background: var(--navy-light);
  border-top: 1px solid var(--glass-border);
}

.page-cta h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  color: var(--white);
  margin-bottom: 12px;
}

.page-cta p {
  color: var(--gray-300);
  margin-bottom: 24px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* --- Active nav link --- */
.nav-link.active-page,
.nav-link.active {
  color: var(--gold) !important;
}

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

/* --- Timeline (About page) --- */
.timeline {
  position: relative;
  max-width: 800px;
  margin: 48px auto 0;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 14px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--gold), var(--royal), transparent);
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
  padding-left: 32px;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -34px;
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--gold);
  border: 3px solid var(--navy);
  box-shadow: 0 0 0 2px var(--gold);
}

.timeline-year {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  color: var(--gold);
  font-weight: 600;
  margin-bottom: 6px;
}

.timeline-item h3 {
  font-family: var(--font-body);
  font-size: 1.05rem;
  color: var(--white);
  margin-bottom: 4px;
}

.timeline-item p {
  font-size: 0.85rem;
  color: var(--gray-400);
  line-height: 1.6;
}

/* --- Expanded expertise detail --- */
.expertise-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-top: 48px;
}

.expertise-detail-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 32px;
  transition: all var(--transition);
}

.expertise-detail-card:hover {
  border-color: rgba(201, 168, 76, 0.3);
  transform: translateY(-4px);
}

.expertise-detail-card h3 {
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  margin-bottom: 12px;
}

.expertise-detail-card h3 i {
  color: var(--gold);
  margin-right: 10px;
}

.expertise-detail-card p {
  font-size: 0.85rem;
  color: var(--gray-400);
  line-height: 1.7;
  margin-bottom: 16px;
}

.expertise-detail-card ul li {
  font-size: 0.82rem;
  color: var(--gray-300);
  padding: 4px 0;
  padding-left: 20px;
  position: relative;
}

.expertise-detail-card ul li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--gold);
}

/* --- Work detail page --- */
.work-detail-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  max-width: 800px;
  margin: 0 auto;
}

.work-detail-card {
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  padding: 40px;
  transition: all var(--transition);
}

.work-detail-card:hover {
  border-color: rgba(201, 168, 76, 0.25);
  transform: translateY(-4px);
}

.work-detail-card h3 {
  font-size: 1.3rem;
  color: var(--white);
  margin-bottom: 16px;
}

.work-detail-card .work-meta {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 16px;
}

.work-detail-card .work-meta span {
  font-size: 0.75rem;
  color: var(--gold);
  background: rgba(201, 168, 76, 0.1);
  padding: 4px 14px;
  border-radius: 100px;
  border: 1px solid rgba(201, 168, 76, 0.2);
}

.work-detail-card p {
  font-size: 0.9rem;
  color: var(--gray-300);
  line-height: 1.8;
  margin-bottom: 20px;
}

.work-detail-results {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

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

.work-detail-results .result-value {
  display: block;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gold);
}

.work-detail-results .result-label {
  font-size: 0.75rem;
  color: var(--gray-400);
  margin-top: 4px;
}

/* --- Testimonials page --- */
.testimonials-page-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

/* --- Certs page --- */
.certs-page-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  max-width: 900px;
  margin: 0 auto;
}

.cert-feature {
  margin-top: 48px;
  text-align: center;
  padding: 40px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
}

.cert-feature p {
  font-size: 0.9rem;
  color: var(--gray-300);
  max-width: 600px;
  margin: 0 auto 24px;
  line-height: 1.7;
}

/* --- Contact page --- */
.contact-page-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  max-width: 900px;
  margin: 0 auto;
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--gray-200);
  letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea,
.form-group select {
  padding: 14px 16px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 0.9rem;
  color: var(--white);
  transition: border-color var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--gold);
  background: rgba(201, 168, 76, 0.05);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--gray-500);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.contact-info-cards {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* --- Page responsive --- */
@media (max-width: 768px) {
  .page-hero { padding: 120px 20px 60px; }
  .page-section { padding: 60px 20px; }
  .page-section-alt { padding: 60px 20px; }

  .expertise-detail-grid { grid-template-columns: 1fr; }
  .testimonials-page-grid { grid-template-columns: 1fr; }
  .certs-page-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-page-grid { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .work-detail-results { grid-template-columns: 1fr; }
  .timeline { padding-left: 24px; }
}

@media (max-width: 480px) {
  .certs-page-grid { grid-template-columns: 1fr; }
}

/* --- Reveal Animations --- */
[data-reveal] {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

[data-reveal="fade-right"] {
  transform: translateX(-30px);
}

[data-reveal="fade-left"] {
  transform: translateX(30px);
}

[data-reveal].revealed {
  opacity: 1;
  transform: translate(0, 0);
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .expertise-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonial-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(10, 22, 40, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition);
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-toggle { display: flex; }

  .section { padding: 64px 20px; }

  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .about-image { height: 280px; }
  .about-image-badge { font-size: 0.7rem; padding: 6px 12px; }
  .expertise-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 16px; }
  .work-grid { grid-template-columns: 1fr; }
  .testimonial-grid { grid-template-columns: 1fr; }
  .certs-grid { grid-template-columns: repeat(2, 1fr); }
  .contact-wrapper { grid-template-columns: 1fr; gap: 40px; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }

  .hero-stats { gap: 16px; }
  .stat-divider { height: 30px; }

  .about-card, .contact-card { padding: 28px; }
  .contact-cta-group { flex-direction: column; }
  .btn-large { width: 100%; justify-content: center; }
  .footer-bottom { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .stats-card { padding: 24px 16px; }
  .certs-grid { grid-template-columns: 1fr; }
  .about-highlights { grid-template-columns: 1fr; }
  .trusted-grid { gap: 16px 24px; }
  .trusted-item { font-size: 0.78rem; }
  .hero-cta { flex-direction: column; width: 100%; }
  .hero-cta .btn { width: 100%; justify-content: center; }
}