/* ===== Variables ===== */
:root {
  --blue-50: #eff6ff;
  --blue-100: #dbeafe;
  --blue-200: #bfdbfe;
  --blue-300: #93c5fd;
  --blue-400: #60a5fa;
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;
  --blue-800: #1e40af;
  --blue-900: #1e3a5f;

  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
  --gray-950: #0b0f19;

  --white: #ffffff;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1), 0 8px 10px rgba(0, 0, 0, 0.04);
  --radius: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --transition: 0.3s ease;
}

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

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

body {
  font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
  color: var(--gray-800);
  line-height: 1.6;
  background: var(--white);
  overflow-x: hidden;
}

a {
  text-decoration: none;
  color: inherit;
}

ul {
  list-style: none;
}

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

/* ===== Container ===== */
.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
  transition: box-shadow var(--transition), background var(--transition);
}

.navbar.scrolled {
  box-shadow: 0 1px 12px rgba(0, 0, 0, 0.08);
  background: rgba(255, 255, 255, 0.97);
}

.nav-container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--gray-900);
  transition: opacity var(--transition);
}

.nav-logo:hover {
  opacity: 0.8;
}

.nav-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 15%;
  border: 2px solid var(--blue-200);
  image-rendering: auto;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--gray-600);
  transition: color var(--transition);
  padding: 8px 16px;
  border-radius: var(--radius);
}

.nav-links a:hover {
  color: var(--blue-600);
  background: var(--blue-50);
}

.nav-cta {
  background: var(--blue-600) !important;
  color: var(--white) !important;
  font-weight: 600 !important;
}

.nav-cta:hover {
  background: var(--blue-700) !important;
  color: var(--white) !important;
}

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

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--gray-700);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-lg);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
}

.btn i {
  font-size: 0.85rem;
}

.btn-primary {
  background: var(--blue-600);
  color: var(--white);
  border-color: var(--blue-600);
}

.btn-primary:hover {
  background: var(--blue-700);
  border-color: var(--blue-700);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--blue-600);
  border-color: var(--blue-300);
}

.btn-outline:hover {
  background: var(--blue-600);
  color: var(--white);
  border-color: var(--blue-600);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
}

/* ===== Inline Links ===== */
.inline-link {
  color: var(--blue-600);
  font-weight: 600;
  border-bottom: 1px solid var(--blue-200);
  transition: all var(--transition);
}

.inline-link:hover {
  color: var(--blue-700);
  border-bottom-color: var(--blue-600);
}

.hero-link {
  color: var(--blue-500);
  font-weight: 600;
  border-bottom: 1px solid rgba(59, 130, 246, 0.3);
  transition: all var(--transition);
}

.hero-link:hover {
  color: var(--blue-600);
  border-bottom-color: var(--blue-500);
}

/* ===== Hero ===== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  position: relative;
  background: linear-gradient(160deg, var(--blue-50) 0%, var(--white) 40%, var(--white) 60%, var(--blue-50) 100%);
  overflow: hidden;
}

.hero-bg-pattern {
  position: absolute;
  inset: 0;
  background-image:
    radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.06) 0%, transparent 50%),
    radial-gradient(circle at 80% 20%, rgba(37, 99, 235, 0.04) 0%, transparent 40%),
    radial-gradient(circle at 70% 80%, rgba(96, 165, 250, 0.05) 0%, transparent 40%);
  pointer-events: none;
}

.hero-inner {
  display: flex;
  align-items: center;
  gap: 64px;
  max-width: 1140px;
  width: 100%;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

.hero-text {
  flex: 1;
}

.hero-greeting {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--blue-600);
  font-weight: 700;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  margin-bottom: 16px;
  padding: 6px 14px;
  background: var(--blue-50);
  border: 1px solid var(--blue-200);
  border-radius: 20px;
}

.hero-name {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 900;
  color: var(--gray-900);
  line-height: 1.1;
  margin-bottom: 12px;
  letter-spacing: -1.5px;
}

.hero-divider {
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, var(--blue-500), var(--blue-300));
  border-radius: 2px;
  margin: 16px 0;
}

.hero-title {
  font-size: 1.2rem;
  color: var(--blue-600);
  font-weight: 600;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--gray-500);
  max-width: 520px;
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-image {
  flex-shrink: 0;
  position: relative;
}

.hero-image-frame {
  width: 320px;
  height: 380px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  position: relative;
  z-index: 2;
}

.hero-image-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 20%;
  image-rendering: auto;
}

.hero-image-accent {
  position: absolute;
  top: 16px;
  left: 16px;
  right: -16px;
  bottom: -16px;
  border: 3px solid var(--blue-200);
  border-radius: var(--radius-xl);
  z-index: 1;
}

.hero-scroll {
  position: absolute;
  bottom: 32px;
  animation: bounce 2s infinite;
  z-index: 1;
}

.hero-scroll a {
  color: var(--gray-400);
  transition: color var(--transition);
  font-size: 1.1rem;
}

.hero-scroll a:hover {
  color: var(--blue-500);
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% { transform: translateY(0); }
  40% { transform: translateY(-8px); }
  60% { transform: translateY(-4px); }
}

/* ===== Sections ===== */
.section {
  padding: 100px 0;
}

.section-alt {
  background: var(--gray-50);
}

.section-header {
  text-align: center;
  margin-bottom: 56px;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--blue-600);
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
  padding: 6px 16px;
  background: var(--blue-50);
  border: 1px solid var(--blue-100);
  border-radius: 20px;
}

.section-tag i {
  font-size: 0.7rem;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--gray-900);
  letter-spacing: -0.5px;
  margin-top: 8px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--gray-500);
  margin-top: 12px;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

/* ===== About ===== */
.about-content {
  max-width: 900px;
  margin: 0 auto;
}

.about-lead {
  font-size: 1.15rem;
  color: var(--gray-700);
  text-align: center;
  margin-bottom: 10px;
  font-weight: 500;
  line-height: 1.7;
}

.about-body {
  color: var(--gray-500);
  font-size: 1.02rem;
  text-align: center;
  margin-bottom: 40px;
  line-height: 1.7;
}

.highlights {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 48px;
}

.highlight-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-left: 4px solid var(--blue-500);
  padding: 24px;
  border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
  display: flex;
  gap: 16px;
  align-items: flex-start;
  transition: all var(--transition);
}

.highlight-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--blue-200);
  border-left-color: var(--blue-600);
}

.highlight-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  min-width: 44px;
  background: var(--blue-50);
  color: var(--blue-600);
  border-radius: var(--radius);
  font-size: 1.1rem;
}

.highlight-card h4 {
  font-size: 0.92rem;
  color: var(--gray-800);
  margin-bottom: 6px;
  font-weight: 700;
}

.highlight-card p {
  font-size: 0.88rem;
  color: var(--gray-500);
  line-height: 1.55;
}

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

.stat {
  text-align: center;
  padding: 28px 16px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
}

.stat:hover {
  border-color: var(--blue-200);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.stat-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--blue-50);
  color: var(--blue-500);
  border-radius: 50%;
  font-size: 1rem;
  margin-bottom: 12px;
}

.stat-number {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--blue-600);
  letter-spacing: -0.5px;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--gray-500);
  font-weight: 500;
  margin-top: 2px;
}

/* ===== Career Cards ===== */
.career-grid {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.career-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: 32px 36px;
  transition: all var(--transition);
  position: relative;
}

.career-card:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--blue-200);
}

.career-current {
  border-left: 4px solid var(--blue-500);
  background: linear-gradient(135deg, var(--white), var(--blue-50));
}

.career-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.career-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--blue-600);
  background: var(--blue-50);
  padding: 5px 14px;
  border-radius: 20px;
  border: 1px solid var(--blue-200);
}

.career-badge i {
  font-size: 0.45rem;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.career-date {
  font-size: 0.82rem;
  color: var(--gray-400);
  font-weight: 600;
}

.career-card h3 {
  font-size: 1.25rem;
  color: var(--gray-900);
  font-weight: 700;
  margin-bottom: 4px;
}

.career-org {
  font-size: 0.95rem;
  color: var(--blue-600);
  font-weight: 500;
  margin-bottom: 16px;
}

.career-desc {
  font-size: 0.92rem;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 20px;
}

.career-tags {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  padding-top: 16px;
  border-top: 1px solid var(--gray-100);
}

.tag {
  padding: 4px 12px;
  background: var(--blue-50);
  color: var(--blue-600);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 20px;
  border: 1px solid var(--blue-100);
}

/* ===== Expertise ===== */
.expertise-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.expertise-card {
  background: var(--white);
  padding: 32px 28px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition);
  border: 1px solid var(--gray-200);
  text-align: center;
}

.expertise-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--blue-200);
}

.expertise-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--blue-50), var(--blue-100));
  border-radius: var(--radius-lg);
  color: var(--blue-600);
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.expertise-text h3 {
  font-size: 1.05rem;
  margin-bottom: 8px;
  color: var(--gray-800);
  font-weight: 700;
}

.expertise-text p {
  font-size: 0.88rem;
  color: var(--gray-500);
  line-height: 1.55;
}

/* ===== Education ===== */
.education-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  max-width: 900px;
  margin: 0 auto;
}

.education-card {
  background: var(--white);
  padding: 28px;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--gray-200);
  display: flex;
  gap: 20px;
  align-items: flex-start;
  transition: all var(--transition);
  overflow: hidden;
}

.education-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--blue-200);
  transform: translateY(-2px);
}

.education-icon-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  min-width: 52px;
  background: linear-gradient(135deg, var(--blue-50), var(--blue-100));
  border-radius: var(--radius-lg);
  color: var(--blue-600);
  font-size: 1.2rem;
}

.education-text {
  min-width: 0;
  flex: 1;
}

.education-text h3 {
  font-size: 0.98rem;
  color: var(--gray-800);
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 6px;
}

.education-degree-sub {
  font-size: 0.85rem;
  color: var(--gray-600);
  margin-bottom: 4px;
}

.education-school {
  font-size: 0.85rem;
  color: var(--gray-500);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 5px;
}

.education-school i {
  font-size: 0.7rem;
  color: var(--blue-400);
}

.education-awards {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 10px;
}

.education-awards span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.73rem;
  font-weight: 600;
  color: var(--blue-700);
  background: var(--blue-50);
  padding: 3px 10px;
  border-radius: 20px;
  border: 1px solid var(--blue-100);
}

.education-awards i {
  font-size: 0.65rem;
  color: var(--blue-500);
}

/* ===== Contact ===== */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  max-width: 700px;
  margin: 0 auto;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 24px;
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-xl);
  transition: all var(--transition);
  overflow: hidden;
}

.contact-card:hover {
  border-color: var(--blue-300);
  background: var(--blue-50);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

.contact-card:hover .contact-arrow {
  opacity: 1;
  transform: translateX(0);
}

.contact-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  min-width: 48px;
  background: var(--blue-50);
  border-radius: var(--radius);
  color: var(--blue-600);
  font-size: 1.15rem;
  border: 1px solid var(--blue-100);
}

.linkedin-icon {
  background: #0077b5;
  color: var(--white);
  border-color: #0077b5;
}

.ajae-icon {
  background: var(--blue-600);
  color: var(--white);
  border-color: var(--blue-600);
}

.contact-text {
  min-width: 0;
  flex: 1;
}

.contact-label {
  display: block;
  font-size: 0.72rem;
  color: var(--gray-400);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 2px;
}

.contact-value {
  display: block;
  font-size: 0.9rem;
  color: var(--gray-700);
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.contact-arrow {
  color: var(--blue-400);
  font-size: 0.85rem;
  opacity: 0;
  transform: translateX(-8px);
  transition: all var(--transition);
  flex-shrink: 0;
}

/* ===== Footer ===== */
.footer {
  background: var(--gray-950);
  color: var(--gray-400);
  padding: 40px 0;
}

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

.footer-left {
  display: flex;
  align-items: center;
  gap: 14px;
}

.footer-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--gray-700);
}

.footer-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--gray-200);
}

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

.footer-right {
  display: flex;
  align-items: center;
  gap: 24px;
}

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

.footer-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius);
  background: rgba(255, 255, 255, 0.06);
  color: var(--gray-400);
  transition: all var(--transition);
  font-size: 0.9rem;
}

.footer-links a:hover {
  background: var(--blue-600);
  color: var(--white);
}

.footer-copy {
  font-size: 0.82rem;
  color: var(--gray-600);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .hero-inner {
    gap: 40px;
  }

  .hero-image-frame {
    width: 260px;
    height: 320px;
  }

  .expertise-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-logo span {
    display: none;
  }

  .nav-links {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(16px);
    flex-direction: column;
    align-items: stretch;
    gap: 4px;
    padding: 16px;
    border-bottom: 1px solid var(--gray-200);
    box-shadow: var(--shadow-lg);
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition);
  }

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

  .nav-links a {
    padding: 12px 16px;
    border-radius: var(--radius);
  }

  .nav-cta {
    text-align: center;
    margin-top: 4px;
  }

  .hero-inner {
    flex-direction: column-reverse;
    text-align: center;
    gap: 40px;
  }

  .hero-image-frame {
    width: 200px;
    height: 240px;
  }

  .hero-image-accent {
    top: 12px;
    left: 12px;
    right: -12px;
    bottom: -12px;
  }

  .hero-subtitle {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions {
    justify-content: center;
  }

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

  .about-stats {
    grid-template-columns: repeat(2, 1fr);
  }

  .career-card {
    padding: 24px 20px;
  }

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

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

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

  .footer-content {
    flex-direction: column;
    gap: 20px;
    text-align: center;
  }

  .footer-left {
    flex-direction: column;
  }

  .footer-right {
    flex-direction: column;
    gap: 12px;
  }
}

@media (max-width: 480px) {
  .section {
    padding: 70px 0;
  }

  .section-title {
    font-size: 1.7rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .about-stats {
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }

  .stat {
    padding: 20px 12px;
  }

  .stat-number {
    font-size: 1.6rem;
  }

  .education-card {
    padding: 20px;
  }

  .education-awards {
    gap: 4px;
  }

  .contact-card {
    padding: 20px;
  }
}