/* =============================================
   DESIGN SYSTEM – TOKENS
   ============================================= */
:root {
  --clr-bg: #080c14;
  --clr-bg-2: #0d1421;
  --clr-surface: rgba(255, 255, 255, 0.04);
  --clr-surface-hover: rgba(255, 255, 255, 0.08);
  --clr-border: rgba(255, 255, 255, 0.08);
  --clr-border-hover: rgba(0, 212, 255, 0.3);

  --clr-primary: #00d4ff;
  --clr-primary-dark: #0099cc;
  --clr-accent: #00ffaa;
  --clr-accent-2: #7c6fcd;
  --clr-warn: #ff6b6b;
  --clr-gold: #ffd700;

  --clr-text: #e8edf5;
  --clr-text-muted: #8892a4;
  --clr-text-faint: #4a5568;

  --clr-nav-scrolled: rgba(8, 12, 20, 0.95);
  --clr-nav-mobile-bg: rgba(8, 12, 20, 0.97);
  --clr-footer-bg: #050810;

  --ff-heading: 'Outfit', sans-serif;
  --ff-body: 'Inter', sans-serif;

  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;

  --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(0, 212, 255, 0.15);
  --shadow-glow-strong: 0 0 60px rgba(0, 212, 255, 0.3);

  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

/* =============================================
   LIGHT THEME VARIABLES
   ============================================= */
[data-theme="light"] {
  --clr-bg: #f8fafc;
  --clr-bg-2: #ffffff;
  --clr-surface: rgba(255, 255, 255, 0.7);
  --clr-surface-hover: rgba(15, 23, 42, 0.05);
  --clr-border: rgba(15, 23, 42, 0.08);
  --clr-border-hover: rgba(0, 102, 255, 0.4);

  --clr-primary: #0066ff;
  --clr-primary-dark: #004db3;
  --clr-accent: #00b386;
  --clr-accent-2: #6355d8;
  --clr-warn: #e15f41;
  --clr-gold: #e6b800;

  --clr-text: #0f172a;
  --clr-text-muted: #475569;
  --clr-text-faint: #64748b;

  --clr-nav-scrolled: rgba(248, 250, 252, 0.9);
  --clr-nav-mobile-bg: rgba(248, 250, 252, 0.97);
  --clr-footer-bg: #f1f5f9;

  --shadow-card: 0 8px 32px rgba(15, 23, 42, 0.06);
  --shadow-glow: 0 0 40px rgba(0, 102, 255, 0.08);
  --shadow-glow-strong: 0 0 60px rgba(0, 102, 255, 0.12);
}

/* =============================================
   LIGHT THEME OVERRIDES
   ============================================= */
[data-theme="light"] .section-title {
  background: linear-gradient(135deg, #0f172a 30%, var(--clr-primary-dark) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

[data-theme="light"] .title-name {
  background: linear-gradient(135deg, #0f172a 20%, var(--clr-primary) 70%, var(--clr-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

[data-theme="light"] .title-fullname {
  color: rgba(15, 23, 42, 0.9);
}

[data-theme="light"] .hero-tagline {
  color: #334155;
}

[data-theme="light"] .hero-badge {
  background: rgba(0, 102, 255, 0.08);
  border-color: rgba(0, 102, 255, 0.18);
  color: var(--clr-primary-dark);
}

[data-theme="light"] .hero-bg {
  filter: brightness(0.92) contrast(0.9) saturate(0.9);
}

[data-theme="light"] .hero-overlay {
  background: radial-gradient(ellipse at 30% 50%, rgba(0, 102, 255, 0.05) 0%, transparent 70%),
              radial-gradient(ellipse at 70% 20%, rgba(0, 180, 255, 0.04) 0%, transparent 60%),
              linear-gradient(to bottom, rgba(248, 250, 252, 0.15) 50%, var(--clr-bg) 100%);
}

[data-theme="light"] .contact-chip {
  background: rgba(15, 23, 42, 0.04);
  border-color: rgba(15, 23, 42, 0.08);
  color: #334155;
}

[data-theme="light"] .contact-chip:hover {
  background: rgba(0, 102, 255, 0.08);
  border-color: rgba(0, 102, 255, 0.3);
  color: var(--clr-primary-dark);
}

[data-theme="light"] .nav-link:hover, 
[data-theme="light"] .nav-link.active {
  background: rgba(15, 23, 42, 0.05);
}

[data-theme="light"] .btn-primary {
  background: linear-gradient(135deg, var(--clr-primary) 0%, var(--clr-primary-dark) 100%);
  color: #ffffff;
}

[data-theme="light"] .btn-primary:hover {
  box-shadow: 0 8px 32px rgba(0, 102, 255, 0.2);
}

[data-theme="light"] .btn-outline {
  border-color: rgba(0, 102, 255, 0.4);
}

[data-theme="light"] .btn-outline:hover {
  background: rgba(0, 102, 255, 0.08);
}

[data-theme="light"] .nav-cta {
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-primary-dark));
  color: #ffffff !important;
}

[data-theme="light"] .form-group input,
[data-theme="light"] .form-group select,
[data-theme="light"] .form-group textarea {
  background: #ffffff;
  border-color: rgba(15, 23, 42, 0.15);
}

[data-theme="light"] .form-group input:focus,
[data-theme="light"] .form-group select:focus,
[data-theme="light"] .form-group textarea:focus {
  background: #ffffff;
  border-color: var(--clr-primary);
}

[data-theme="light"] .marker-pulse {
  background: rgba(0, 102, 255, 0.15);
}

/* =============================================
   BASE RESET
   ============================================= */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

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

body {
  font-family: var(--ff-body);
  background-color: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.7;
  overflow-x: hidden;
}

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

/* =============================================
   SCROLLBAR
   ============================================= */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--clr-bg); }
::-webkit-scrollbar-thumb { background: var(--clr-primary-dark); border-radius: 3px; }

/* =============================================
   GLASS CARD
   ============================================= */
.glass-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: var(--transition);
}
.glass-card:hover {
  border-color: var(--clr-border-hover);
  box-shadow: var(--shadow-glow);
  transform: translateY(-4px);
}

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

.section {
  padding: 100px 0;
  position: relative;
}

/* SPA Section Toggling */
section {
  display: none;
  animation: fadeInSPA 0.4s ease forwards;
}
section.active-section {
  display: block;
}
section#hero.active-section {
  display: flex;
}
@keyframes fadeInSPA {
  from { opacity: 0; transform: translateY(15px); }
  to { opacity: 1; transform: translateY(0); }
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--clr-primary);
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.2);
  border-radius: 50px;
  padding: 4px 16px;
  margin-bottom: 16px;
}

.section-title {
  font-family: var(--ff-heading);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 800;
  background: linear-gradient(135deg, #fff 0%, var(--clr-primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
  margin-bottom: 12px;
}

.section-subtitle {
  color: var(--clr-text-muted);
  font-size: 1.05rem;
  max-width: 600px;
  margin: 0 auto;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 32px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition);
  letter-spacing: 0.02em;
}

.btn-primary {
  background: linear-gradient(135deg, var(--clr-primary) 0%, #0066ff 100%);
  color: #000;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 212, 255, 0.4);
}

.btn-outline {
  border: 1px solid rgba(0, 212, 255, 0.4);
  color: var(--clr-primary);
}
.btn-outline:hover {
  background: rgba(0, 212, 255, 0.1);
  border-color: var(--clr-primary);
}

.btn-outline-sm {
  display: inline-flex;
  align-items: center;
  padding: 10px 24px;
  border: 1px solid rgba(0, 212, 255, 0.4);
  border-radius: 50px;
  color: var(--clr-primary);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--transition);
}
.btn-outline-sm:hover {
  background: rgba(0, 212, 255, 0.1);
}

.btn-full { width: 100%; justify-content: center; }

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

.navbar.scrolled {
  background: var(--clr-nav-scrolled);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--clr-border);
  padding: 12px 0;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-left: auto;
  margin-right: 16px;
  z-index: 1001;
}

.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  color: var(--clr-text);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  cursor: pointer;
  outline: none;
}

.theme-toggle:hover {
  background: var(--clr-surface-hover);
  border-color: var(--clr-border-hover);
  color: var(--clr-primary);
  transform: scale(1.05);
}

.theme-toggle svg {
  display: none;
  stroke: currentColor;
}

[data-theme-mode="light"] .theme-toggle .sun-icon {
  display: block;
}

[data-theme-mode="dark"] .theme-toggle .moon-icon {
  display: block;
}

[data-theme-mode="system"] .theme-toggle .system-icon {
  display: block;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: baseline;
  gap: 6px;
}
.brand-surv {
  font-family: var(--ff-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--clr-primary);
}
.brand-name {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--clr-text);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  transition: var(--transition);
}
.nav-link:hover, .nav-link.active {
  color: var(--clr-text);
  background: var(--clr-surface);
}
.nav-cta {
  background: linear-gradient(135deg, var(--clr-primary), #0066ff);
  color: #000 !important;
  font-weight: 600;
  margin-left: 8px;
}
.nav-cta:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: var(--transition);
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* =============================================
   HERO
   ============================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: url('hero_bg.png') center/cover no-repeat;
  filter: brightness(0.35);
}

#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(0, 100, 200, 0.15) 0%, transparent 70%),
              radial-gradient(ellipse at 70% 20%, rgba(0, 212, 255, 0.1) 0%, transparent 60%),
              linear-gradient(to bottom, transparent 60%, var(--clr-bg) 100%);
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 24px;
  max-width: 900px;
}

.hero-image-wrapper {
  width: 200px;
  height: 200px;
  margin: 0 auto 28px auto;
  border-radius: 50%;
  border: 4px solid var(--clr-primary);
  box-shadow: var(--shadow-glow);
  background: var(--clr-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
  animation: fadeInDown 0.8s ease both;
  transition: var(--transition);
}

.hero-image-wrapper:hover {
  transform: scale(1.03);
  border-color: var(--clr-accent);
  box-shadow: var(--shadow-glow-strong);
}

.hero-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: relative;
  z-index: 2;
}

.hero-image-wrapper img[src=""] {
  display: none;
}

.hero-image-wrapper::after {
  content: "Image Placeholder";
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  position: absolute;
  z-index: 1;
}

@media (min-width: 769px) {
  .hero-image-wrapper {
    width: 280px;
    height: 280px;
    margin: 0 auto 36px auto;
  }
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.25);
  border-radius: 50px;
  padding: 8px 20px;
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--clr-primary);
  margin-bottom: 28px;
  animation: fadeInDown 0.8s ease both;
}

.badge-dot {
  width: 8px; height: 8px;
  background: var(--clr-accent);
  border-radius: 50%;
  animation: pulse-dot 2s ease infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.7); }
}

.hero-title {
  font-family: var(--ff-heading);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 20px;
  animation: fadeInUp 0.8s ease 0.2s both;
}

.title-surv {
  display: block;
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  color: var(--clr-primary);
  letter-spacing: 0.15em;
  font-weight: 600;
  margin-bottom: 4px;
}

.title-name {
  display: block;
  font-size: clamp(3rem, 8vw, 6rem);
  background: linear-gradient(135deg, #ffffff 0%, var(--clr-primary) 60%, var(--clr-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.title-fullname {
  display: block;
  font-size: clamp(1.8rem, 4vw, 3rem);
  color: rgba(255,255,255,0.85);
  font-weight: 700;
}

.hero-tagline {
  font-size: clamp(1rem, 2vw, 1.15rem);
  color: var(--clr-text-muted);
  margin-bottom: 48px;
  line-height: 1.8;
  animation: fadeInUp 0.8s ease 0.4s both;
}
.hero-tagline em { color: var(--clr-accent); font-style: normal; }

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0;
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: 24px 32px;
  margin-bottom: 40px;
  backdrop-filter: blur(10px);
  animation: fadeInUp 0.8s ease 0.5s both;
}

.stat-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 0 32px;
}

.stat-number {
  font-family: var(--ff-heading);
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 800;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.stat-suffix {
  font-family: var(--ff-heading);
  font-size: clamp(1.5rem, 4vw, 2.2rem);
  font-weight: 800;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--clr-text-muted);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  white-space: nowrap;
}

.stat-divider {
  width: 1px;
  height: 48px;
  background: var(--clr-border);
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.8s ease 0.6s both;
}

.hero-scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--clr-text-faint);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  animation: fadeInUp 1s ease 1s both;
}

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

@keyframes scroll-line {
  0% { transform: scaleY(0); transform-origin: top; }
  50% { transform: scaleY(1); transform-origin: top; }
  51% { transform: scaleY(1); transform-origin: bottom; }
  100% { transform: scaleY(0); transform-origin: bottom; }
}

/* =============================================
   ABOUT
   ============================================= */
.about-section { background: var(--clr-bg-2); }

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

.about-card {
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.about-avatar {
  display: flex;
  justify-content: center;
  position: relative;
}

.avatar-ring {
  position: absolute;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  border: 2px solid transparent;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent)) border-box;
  -webkit-mask: linear-gradient(#fff 0 0) padding-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: destination-out;
  mask-composite: exclude;
  animation: spin-slow 8s linear infinite;
}

@keyframes spin-slow {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.avatar-inner {
  width: 100px;
  height: 100px;
  background: linear-gradient(135deg, rgba(0,212,255,0.15), rgba(0,102,255,0.1));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(0,212,255,0.2);
}
.avatar-inner svg { width: 60px; height: 60px; }

.about-info h3 {
  font-family: var(--ff-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--clr-primary);
  margin-bottom: 16px;
}

.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.info-item {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.info-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--clr-text-faint);
}

.info-value {
  font-size: 0.88rem;
  color: var(--clr-text);
  font-weight: 500;
}

.about-text {
  display: flex;
  flex-direction: column;
  gap: 20px;
  justify-content: center;
}

.about-lead {
  font-size: 1.1rem;
  font-weight: 500;
  line-height: 1.8;
  color: var(--clr-text);
}

.about-text p { color: var(--clr-text-muted); line-height: 1.8; }
.about-text strong { color: var(--clr-text); }

.about-contacts {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 8px;
}

.contact-chip {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  color: var(--clr-text-muted);
  transition: var(--transition);
}
.contact-chip:hover {
  color: var(--clr-primary);
  border-color: rgba(0,212,255,0.3);
  background: rgba(0,212,255,0.05);
}

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

.expertise-card {
  padding: 32px;
  text-align: center;
}

.expertise-icon {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
}
.expertise-icon svg { width: 100%; height: 100%; }

.expertise-card h3 {
  font-family: var(--ff-heading);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 10px;
}

.expertise-card p {
  font-size: 0.88rem;
  color: var(--clr-text-muted);
  line-height: 1.7;
}

/* =============================================
   PROFESSIONAL
   ============================================= */
.professional-section { background: var(--clr-bg-2); }

.prof-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.prof-card {
  padding: 28px 24px;
  text-align: center;
  position: relative;
}

.prof-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: #000;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  border-radius: 6px;
  padding: 4px 12px;
  margin-bottom: 12px;
}

.prof-card h3 {
  font-family: var(--ff-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 8px;
}

.prof-body {
  font-size: 0.84rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
  margin-bottom: 16px;
}

.prof-date {
  font-size: 0.78rem;
  color: var(--clr-accent);
  font-weight: 600;
}

/* =============================================
   EXPERIENCE TIMELINE
   ============================================= */
.timeline {
  position: relative;
  padding-left: 40px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 11px;
  top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--clr-primary), transparent);
}

.timeline-item {
  position: relative;
  margin-bottom: 28px;
}

.timeline-marker {
  position: absolute;
  left: -40px;
  top: 24px;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.marker-dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--clr-primary);
  border: 2px solid var(--clr-bg);
  position: relative;
  z-index: 1;
}

.marker-pulse {
  position: absolute;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: rgba(0, 212, 255, 0.2);
  animation: pulse-ring 2s ease infinite;
}

@keyframes pulse-ring {
  0% { transform: scale(0.5); opacity: 1; }
  100% { transform: scale(1.5); opacity: 0; }
}

.timeline-content {
  padding: 24px 28px;
}

.timeline-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}

.tl-date {
  font-size: 0.8rem;
  color: var(--clr-primary);
  font-weight: 600;
  letter-spacing: 0.04em;
}

.tl-badge {
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 50px;
  letter-spacing: 0.06em;
}

.current-badge {
  background: rgba(0, 255, 170, 0.15);
  border: 1px solid rgba(0, 255, 170, 0.3);
  color: var(--clr-accent);
}

.tl-role {
  font-family: var(--ff-heading);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 4px;
}

.tl-company {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--clr-primary);
  margin-bottom: 4px;
}

.tl-location {
  font-size: 0.8rem;
  color: var(--clr-text-faint);
}

/* =============================================
   EDUCATION
   ============================================= */
.education-section { background: var(--clr-bg-2); }

.edu-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.edu-card {
  padding: 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.edu-card.highlight-card {
  border-color: rgba(0, 212, 255, 0.3);
  background: rgba(0, 212, 255, 0.05);
  grid-column: span 2;
}

.edu-icon { font-size: 1.8rem; flex-shrink: 0; }

.edu-status {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: 50px;
  margin-bottom: 6px;
}

.in-view {
  background: rgba(0, 212, 255, 0.15);
  border: 1px solid rgba(0, 212, 255, 0.3);
  color: var(--clr-primary);
}

.edu-date {
  display: block;
  font-size: 0.75rem;
  color: var(--clr-accent);
  font-weight: 600;
  margin-bottom: 4px;
}

.edu-body h3 {
  font-family: var(--ff-heading);
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 4px;
}

.edu-spec {
  font-size: 0.8rem;
  color: var(--clr-primary);
  margin-bottom: 2px;
}

.edu-inst {
  font-size: 0.78rem;
  color: var(--clr-text-muted);
}

/* =============================================
   PROJECTS
   ============================================= */
.projects-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  justify-content: center;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 8px 20px;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  transition: var(--transition);
}

.filter-btn.active, .filter-btn:hover {
  background: linear-gradient(135deg, var(--clr-primary), #0066ff);
  color: #000;
  border-color: transparent;
}

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

.project-card {
  padding: 28px;
  transition: var(--transition);
}

.project-card.hidden {
  display: none;
}

.project-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
  flex-wrap: wrap;
  gap: 8px;
}

.project-location {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--clr-accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.project-date {
  font-size: 0.75rem;
  color: var(--clr-text-faint);
}

.project-card h3 {
  font-family: var(--ff-heading);
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 8px;
  line-height: 1.4;
}

.project-client {
  font-size: 0.8rem;
  color: var(--clr-text-muted);
  margin-bottom: 12px;
  line-height: 1.5;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 12px;
}

.tag {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 50px;
  background: rgba(0, 212, 255, 0.1);
  border: 1px solid rgba(0, 212, 255, 0.2);
  color: var(--clr-primary);
}

.project-role {
  font-size: 0.8rem;
  color: var(--clr-text-muted);
  border-top: 1px solid var(--clr-border);
  padding-top: 10px;
  margin-top: 4px;
}
.project-role strong { color: var(--clr-text); }

.projects-note {
  text-align: center;
  margin-top: 40px;
  padding: 20px 32px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  color: var(--clr-text-muted);
  font-size: 0.9rem;
  font-style: italic;
}

/* =============================================
   RETAINERSHIPS
   ============================================= */
.retainer-section { background: var(--clr-bg-2); }

.retainer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.retainer-card {
  padding: 24px;
  text-align: center;
}

.retainer-date {
  display: block;
  font-size: 0.75rem;
  color: var(--clr-primary);
  font-weight: 700;
  letter-spacing: 0.06em;
  margin-bottom: 10px;
}

.retainer-card h3 {
  font-family: var(--ff-heading);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 6px;
  line-height: 1.4;
}

.retainer-card p {
  font-size: 0.8rem;
  color: var(--clr-text-muted);
}

/* =============================================
   LEADERSHIP
   ============================================= */
.leadership-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.leader-card {
  padding: 28px;
  position: relative;
  overflow: hidden;
}

.leader-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0;
  width: 4px; height: 100%;
  background: linear-gradient(to bottom, var(--clr-primary), var(--clr-accent));
  border-radius: 4px 0 0 4px;
}

.leader-year {
  font-family: var(--ff-heading);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--clr-primary);
  letter-spacing: 0.08em;
  margin-bottom: 10px;
}

.leader-card h3 {
  font-family: var(--ff-heading);
  font-size: 1rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 8px;
}

.leader-card p {
  font-size: 0.84rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
}

/* =============================================
   PUBLICATIONS / AWARDS
   ============================================= */
.publications-section { background: var(--clr-bg-2); }

.pub-container {
  padding: 48px;
  display: flex;
  gap: 40px;
  align-items: center;
  margin-bottom: 20px;
}

.pub-icon { flex-shrink: 0; width: 80px; height: 80px; }
.pub-icon svg { width: 100%; height: 100%; }

.pub-text h3 {
  font-family: var(--ff-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 12px;
}
.pub-text p {
  color: var(--clr-text-muted);
  line-height: 1.8;
  margin-bottom: 10px;
  font-size: 0.92rem;
}
.pub-cta { margin-top: 20px; }

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

.award-card {
  padding: 28px;
  text-align: center;
}

.award-icon { font-size: 2rem; margin-bottom: 14px; }

.award-card h3 {
  font-family: var(--ff-heading);
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 8px;
}

.award-card p {
  font-size: 0.82rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
  margin-bottom: 12px;
}

.award-date {
  font-size: 0.75rem;
  color: var(--clr-gold);
  font-weight: 600;
}

/* =============================================
   CONTACT
   ============================================= */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: start;
}

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

.contact-card {
  padding: 24px;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  border-radius: var(--radius-md);
}

.contact-icon { font-size: 1.5rem; flex-shrink: 0; }

.contact-card h4 {
  font-family: var(--ff-heading);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 4px;
}

.contact-card p {
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  line-height: 1.6;
}
.contact-card a {
  color: var(--clr-primary);
  transition: var(--transition);
}
.contact-card a:hover { color: var(--clr-accent); }

.contact-form-wrap {
  padding: 40px;
}

.contact-form-wrap h3 {
  font-family: var(--ff-heading);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 28px;
}

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

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

.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.form-group input,
.form-group select,
.form-group textarea {
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  color: var(--clr-text);
  font-family: var(--ff-body);
  font-size: 0.9rem;
  transition: var(--transition);
  outline: none;
  appearance: none;
  -webkit-appearance: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--clr-primary);
  background: rgba(0, 212, 255, 0.05);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--clr-text-faint);
}

.form-group select option {
  background: var(--clr-bg-2);
  color: var(--clr-text);
}

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

.form-success {
  display: none;
  text-align: center;
  color: var(--clr-accent);
  font-size: 0.9rem;
  padding: 12px;
  background: rgba(0, 255, 170, 0.1);
  border: 1px solid rgba(0, 255, 170, 0.2);
  border-radius: var(--radius-sm);
}

/* =============================================
   FOOTER
   ============================================= */
.footer {
  background: var(--clr-footer-bg);
  border-top: 1px solid var(--clr-border);
  padding: 60px 0 40px;
  text-align: center;
}

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

.footer .nav-brand {
  justify-content: center;
  margin-bottom: 8px;
}

.footer .brand-surv { font-size: 1.3rem; }
.footer .brand-name { font-size: 1.1rem; }

.footer-tagline {
  color: var(--clr-text-muted);
  font-size: 0.9rem;
  margin-bottom: 28px;
}

.footer-links {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 24px;
}

.footer-links a {
  padding: 6px 16px;
  border-radius: 50px;
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  transition: var(--transition);
}
.footer-links a:hover { color: var(--clr-primary); }

.footer-professional {
  display: flex;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
  font-size: 0.8rem;
  color: var(--clr-text-faint);
  margin-bottom: 24px;
}

.footer-copy {
  font-size: 0.78rem;
  color: var(--clr-text-faint);
}

/* =============================================
   ANIMATIONS
   ============================================= */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 1024px) {
  .expertise-grid { grid-template-columns: repeat(2, 1fr); }
  .prof-cards { grid-template-columns: repeat(2, 1fr); }
  .edu-grid { grid-template-columns: repeat(2, 1fr); }
  .edu-card.highlight-card { grid-column: span 2; }
  .projects-grid { grid-template-columns: repeat(2, 1fr); }
  .retainer-grid { grid-template-columns: repeat(2, 1fr); }
  .leadership-grid { grid-template-columns: repeat(2, 1fr); }
  .awards-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .section { padding: 72px 0; }

  .nav-links {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--clr-nav-mobile-bg);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    z-index: 999;
  }
  .nav-links.open { display: flex; }
  .nav-link { font-size: 1.2rem; padding: 12px 24px; }
  .nav-toggle { display: flex; z-index: 1001; }

  .about-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }

  .hero-stats {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 16px;
    padding: 24px;
    justify-content: center;
  }
  .stat-item {
    flex: 1 1 40%;
    padding: 10px;
  }
  .stat-divider { display: none; }

  .expertise-grid { grid-template-columns: 1fr; }
  .prof-cards { grid-template-columns: 1fr 1fr; }
  .edu-grid { grid-template-columns: 1fr; }
  .edu-card.highlight-card { grid-column: span 1; }
  .projects-grid { grid-template-columns: 1fr; }
  .retainer-grid { grid-template-columns: repeat(2, 1fr); }
  .leadership-grid { grid-template-columns: 1fr; }
  .awards-grid { grid-template-columns: 1fr; }

  .pub-container {
    flex-direction: column;
    text-align: center;
    padding: 32px;
  }

  .timeline { padding-left: 28px; }

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

@media (max-width: 480px) {
  .prof-cards { grid-template-columns: 1fr; }
  .retainer-grid { grid-template-columns: 1fr; }
  .hero-actions { flex-direction: column; align-items: center; }
}