/* ============================================
   AWS Console-Inspired Portfolio — Design System
   ============================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* --- Design Tokens --- */
:root {
  /* Page backgrounds */
  --bg-page: #F2F3F3;
  --bg-page-alt: #F8FAFC;
  --bg-surface: #FFFFFF;
  --bg-panel: #F1F5F9;
  --bg-panel-alt: #EEF2F6;

  /* AWS navy */
  --navy-900: #131920;
  --navy-800: #1B2738;
  --navy-700: #232F3E;
  --navy-600: #2D3B4E;
  --navy-500: #37475A;

  /* AWS Orange */
  --orange-50: #FFF7ED;
  --orange-100: #FFEDD5;
  --orange-200: #FED7AA;
  --orange-300: #FDBA74;
  --orange-400: #FB923C;
  --orange-500: #FF9900;
  --orange-600: #EA7E00;
  --orange-700: #C96800;
  --orange-800: #9A3412;

  /* Technical Blue */
  --blue-50: #EFF6FF;
  --blue-100: #DBEAFE;
  --blue-200: #BFDBFE;
  --blue-300: #93C5FD;
  --blue-400: #60A5FA;
  --blue-500: #0073BB;
  --blue-600: #2563EB;
  --blue-700: #1D4ED8;

  /* Text colors */
  --text-primary: #111827;
  --text-secondary: #374151;
  --text-body: #475569;
  --text-muted: #64748B;
  --text-light: #94A3B8;
  --text-on-dark: #F1F5F9;
  --text-on-navy: #FFFFFF;
  --text-on-orange: #111827;

  /* Borders */
  --border-light: #E2E8F0;
  --border-medium: #D5DBE3;
  --border-dark: #CBD5E1;
  --border-accent: #FF9900;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.07), 0 2px 4px -1px rgba(0,0,0,0.04);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.07), 0 4px 6px -2px rgba(0,0,0,0.03);
  --shadow-card: 0 1px 3px rgba(0,0,0,0.08), 0 0 0 1px rgba(0,0,0,0.02);

  /* Border Radius */
  --radius-sm: 3px;
  --radius-md: 4px;
  --radius-lg: 6px;
  --radius-xl: 6px;

  /* Spacing */
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-8: 32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* AWS Console specific */
  --console-header-height: 56px;
  --sidebar-width: 260px;
  --content-max-width: 1200px;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: var(--blue-500);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--blue-700);
}

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

/* --- Scrollbar Styling --- */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-page);
}
::-webkit-scrollbar-thumb {
  background: var(--border-dark);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* --- Utilities --- */
.container {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.section-padding {
  padding: var(--space-16) 0;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

/* ============================================
   NAVBAR — AWS Console Header Style
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--navy-700);
  height: var(--console-header-height);
  display: flex;
  align-items: center;
  border-bottom: 2px solid var(--orange-500);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.navbar__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.navbar__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.navbar__name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-on-navy);
  letter-spacing: -0.3px;
}

.navbar__role {
  font-size: 12px;
  color: var(--text-light);
  margin-left: var(--space-2);
  padding-left: var(--space-2);
  border-left: 1px solid var(--navy-500);
}

.navbar__nav {
  display: flex;
  align-items: center;
  gap: 0;
  list-style: none;
}

.navbar__link {
  display: flex;
  align-items: center;
  padding: var(--space-2) var(--space-4);
  color: var(--text-light);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  position: relative;
  height: var(--console-header-height);
}

.navbar__link:hover {
  color: var(--text-on-navy);
  background: rgba(255,255,255,0.06);
}

.navbar__link.active {
  color: var(--text-on-navy);
}

.navbar__link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: var(--space-4);
  right: var(--space-4);
  height: 2px;
  background: var(--orange-500);
}

.navbar__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px 14px;
  background: var(--orange-500);
  color: var(--navy-700);
  font-size: 13px;
  font-weight: 600;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all var(--transition-fast);
  border: none;
  cursor: pointer;
}

.navbar__cta:hover {
  background: var(--orange-600);
  color: var(--navy-700);
  transform: translateY(-1px);
}

.navbar__mobile-toggle {
  display: none;
  background: none;
  border: 1px solid var(--navy-500);
  border-radius: var(--radius-sm);
  padding: var(--space-2);
  color: var(--text-on-navy);
  cursor: pointer;
  width: 36px;
  height: 36px;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 4px;
}

.navbar__mobile-toggle span {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: all var(--transition-fast);
}

/* ============================================
   HERO — Cloud Console Dashboard
   ============================================ */
.hero {
  padding-top: calc(var(--console-header-height) + var(--space-10));
  padding-bottom: var(--space-16);
  background: var(--bg-page-alt);
  border-bottom: 1px solid var(--border-light);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(255,153,0,0.03) 0%, transparent 50%),
    radial-gradient(circle at 80% 30%, rgba(0,115,187,0.02) 0%, transparent 50%);
  pointer-events: none;
}

/* Subtle grid pattern */
.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    linear-gradient(rgba(0,0,0,0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,0,0,0.015) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

.hero .container {
  position: relative;
  z-index: 1;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: var(--space-12);
  align-items: center;
}

.hero__content {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: 5px 0;
  background: transparent;
  border: none;
  border-radius: var(--radius-md);
  font-size: 12px;
  font-weight: 600;
  color: var(--orange-700);
  width: fit-content;
}

.hero__badge-dot {
  width: 6px;
  height: 6px;
  background: var(--orange-500);
  border-radius: 50%;
  animation: pulse-dot 2s ease-in-out infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero__name {
  font-size: 42px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -1.5px;
  line-height: 1.1;
}

.hero__name-highlight {
  color: var(--orange-500);
}

.hero__title {
  font-size: 20px;
  font-weight: 500;
  color: var(--navy-700);
  letter-spacing: -0.3px;
}

.hero__tagline {
  font-size: 15px;
  color: var(--text-body);
  line-height: 1.7;
  max-width: 480px;
}

.hero__trust {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-1);
}

.hero__trust-item {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 4px 10px;
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
}

.hero__trust-item svg {
  width: 12px;
  height: 12px;
  flex-shrink: 0;
}

.hero__actions {
  display: flex;
  gap: var(--space-3);
  margin-top: var(--space-2);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 10px 20px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
  border: none;
  line-height: 1;
}

.btn--primary {
  background: var(--orange-500);
  color: var(--navy-700);
  border: 1px solid var(--orange-600);
  box-shadow: 0 1px 2px rgba(255,153,0,0.2);
}

.btn--primary:hover {
  background: var(--orange-600);
  color: var(--navy-700);
  transform: translateY(-1px);
  box-shadow: 0 4px 8px rgba(255,153,0,0.25);
}

.btn--secondary {
  background: var(--bg-surface);
  color: var(--navy-700);
  border: 1px solid var(--border-medium);
  box-shadow: var(--shadow-xs);
}

.btn--secondary:hover {
  background: var(--bg-panel);
  border-color: var(--navy-700);
  transform: translateY(-1px);
}

.btn svg {
  width: 16px;
  height: 16px;
}

/* --- Hero Dashboard Panel --- */
.hero__dashboard {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.dashboard-panel {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
}

.dashboard-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-4);
  background: var(--navy-700);
  color: var(--text-on-navy);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.dashboard-panel__header-status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-size: 11px;
  font-weight: 500;
  color: #36B37E;
}

.dashboard-panel__header-status::before {
  content: '';
  width: 6px;
  height: 6px;
  background: #36B37E;
  border-radius: 50%;
}

.dashboard-panel__body {
  padding: var(--space-4);
}

/* Pipeline Visual */
.pipeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.pipeline__row {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.pipeline__stage {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 5px 10px;
  background: var(--bg-panel);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.pipeline__stage--active {
  background: var(--bg-panel);
  border-color: var(--border-medium);
  color: var(--text-primary);
  font-weight: 600;
}

.pipeline__stage--success {
  background: var(--bg-panel);
  border-color: var(--border-light);
  color: var(--text-secondary);
}

.pipeline__stage--blue {
  background: var(--bg-panel);
  border-color: var(--border-light);
  color: var(--text-secondary);
}

.pipeline__arrow {
  color: var(--text-light);
  font-size: 12px;
  flex-shrink: 0;
}

/* Resource Cards Grid */
.resource-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3);
}

.resource-card {
  padding: var(--space-3);
  background: var(--bg-panel);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.resource-card:hover {
  border-color: var(--orange-300);
  box-shadow: var(--shadow-sm);
}

.resource-card__icon {
  display: flex;
  align-items: center;
  margin-bottom: var(--space-2);
}

.resource-card__icon--blue {
  background: var(--blue-50);
  border-color: var(--blue-200);
}

.resource-card__label {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  margin-bottom: 2px;
}

.resource-card__value {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
}

.resource-card__meta {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ============================================
   SECTION HEADERS
   ============================================ */
.section {
  padding: var(--space-16) 0;
}

.section--alt {
  background: var(--bg-page-alt);
}

.section--white {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-light);
  border-bottom: 1px solid var(--border-light);
}

.section__header {
  margin-bottom: var(--space-10);
}

.section__breadcrumb {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: 12px;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: var(--space-3);
}

.section__breadcrumb-active {
  color: var(--text-secondary);
}

.section__breadcrumb-sep {
  color: var(--border-dark);
}

.section__title {
  font-size: 28px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.8px;
  margin-bottom: var(--space-2);
}

.section__title-accent {
  display: inline-block;
  width: 4px;
  height: 24px;
  background: var(--orange-500);
  border-radius: 2px;
  margin-right: var(--space-3);
  vertical-align: middle;
}

.section__subtitle {
  font-size: 15px;
  color: var(--text-body);
  max-width: 600px;
  line-height: 1.6;
}

/* ============================================
   PROJECTS — Case Study Cards
   ============================================ */
.project-featured {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  margin-bottom: var(--space-8);
  transition: all var(--transition-base);
}

.project-featured:hover {
  box-shadow: var(--shadow-lg);
  border-color: var(--border-medium);
}

.project-featured__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-3) var(--space-6);
  background: var(--navy-700);
  color: var(--text-on-navy);
}

.project-featured__header-title {
  font-size: 13px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.project-featured__header-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px 8px;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: var(--radius-sm);
  font-size: 10px;
  font-weight: 600;
  color: rgba(255,255,255,0.7);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.project-featured__body {
  padding: var(--space-8) var(--space-6);
}

.project-featured__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
}

.project-featured__info {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.project-featured__name {
  font-size: 24px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.project-featured__desc {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.7;
}

.project-cbs {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: var(--space-4);
}

.project-cbs__item {
  padding: var(--space-4);
  background: var(--bg-panel);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  border-top: 2px solid var(--border-medium);
}

.project-cbs__label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  margin-bottom: var(--space-2);
}

.project-cbs__text {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Project Pipeline Diagram */
.project-pipeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.project-pipeline__title {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.project-pipeline__flow {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.project-pipeline__step {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 6px 12px;
  background: var(--bg-panel);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 600;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.project-pipeline__step--navy {
  background: var(--bg-panel);
  border-color: var(--border-medium);
  color: var(--text-primary);
}

.project-pipeline__step--orange {
  background: var(--bg-panel);
  border-color: var(--border-medium);
  color: var(--text-primary);
}

.project-pipeline__step--blue {
  background: var(--bg-panel);
  border-color: var(--border-light);
  color: var(--text-secondary);
}

.project-pipeline__step--green {
  background: var(--bg-panel);
  border-color: var(--border-light);
  color: var(--text-secondary);
}

.project-pipeline__connector {
  color: var(--text-light);
  font-size: 14px;
  font-weight: 700;
}

/* Smaller project cards */
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.project-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xs);
  transition: all var(--transition-base);
}

.project-card:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--orange-300);
  transform: translateY(-2px);
}

.project-card__header {
  padding: var(--space-3) var(--space-4);
  background: var(--navy-700);
  color: var(--text-on-navy);
  font-size: 12px;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.project-card__body {
  padding: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.project-card__name {
  font-size: 18px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.3px;
}

.project-card__desc {
  font-size: 13px;
  color: var(--text-body);
  line-height: 1.6;
}

.project-card__tech {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.project-card__tech-tag {
  padding: 3px 8px;
  background: var(--bg-panel);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
}

.project-card__footer {
  padding: var(--space-3) var(--space-5);
  border-top: 1px solid var(--border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.project-card__link {
  font-size: 13px;
  font-weight: 600;
  color: var(--blue-500);
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}

.project-card__link:hover {
  color: var(--orange-500);
}

/* ============================================
   SKILLS — AWS Service Groups
   ============================================ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: var(--space-5);
}

.skill-group {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xs);
  transition: all var(--transition-base);
}

.skill-group:hover {
  box-shadow: var(--shadow-md);
  border-color: var(--border-medium);
}

.skill-group__header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--border-light);
}

.skill-group__marker {
  width: 4px;
  height: 24px;
  background: var(--orange-500);
  border-radius: 2px;
  flex-shrink: 0;
}

.skill-group__title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -0.2px;
}

.skill-group__count {
  margin-left: auto;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
  padding: 2px 8px;
  background: var(--bg-panel);
  border-radius: var(--radius-sm);
}

.skill-group__body {
  padding: var(--space-4) var(--space-5);
}

.skill-group__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.skill-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 6px 12px;
  background: var(--bg-panel);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.skill-tag:hover {
  background: var(--orange-50);
  border-color: var(--orange-200);
  color: var(--orange-700);
}

.skill-tag__icon {
  font-size: 14px;
}

/* ============================================
   LEARNING PATH — Cloud Roadmap
   ============================================ */
.learning-timeline {
  position: relative;
  padding-left: var(--space-10);
}

.learning-timeline::before {
  content: '';
  position: absolute;
  left: 15px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-light);
}

.learning-item {
  position: relative;
  margin-bottom: var(--space-8);
}

.learning-item:last-child {
  margin-bottom: 0;
}

.learning-item__marker {
  position: absolute;
  left: calc(-1 * var(--space-10) + 7px);
  top: 4px;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--bg-surface);
  border: 2px solid var(--border-medium);
  z-index: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.learning-item__marker::after {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--border-dark);
}

.learning-item--current .learning-item__marker {
  border-color: var(--orange-500);
  box-shadow: 0 0 0 4px var(--orange-100);
}

.learning-item--current .learning-item__marker::after {
  background: var(--orange-500);
}

.learning-item--completed .learning-item__marker {
  border-color: #36B37E;
  background: #EEF6F2;
}

.learning-item--completed .learning-item__marker::after {
  background: #2E9964;
}

.learning-item__card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  box-shadow: var(--shadow-xs);
  transition: all var(--transition-base);
}

.learning-item--current .learning-item__card {
  border-color: var(--orange-300);
  box-shadow: 0 0 0 1px var(--orange-100), var(--shadow-sm);
}

.learning-item__card:hover {
  box-shadow: var(--shadow-md);
}

.learning-item__phase {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--text-muted);
  margin-bottom: var(--space-1);
}

.learning-item--current .learning-item__phase {
  color: var(--orange-600);
}

.learning-item__title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-2);
}

.learning-item__desc {
  font-size: 13px;
  color: var(--text-body);
  line-height: 1.6;
  margin-bottom: var(--space-3);
}

.learning-item__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.learning-item__tag {
  padding: 3px 8px;
  background: var(--bg-panel);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
}

.learning-item--current .learning-item__tag {
  background: var(--orange-50);
  border-color: var(--orange-200);
  color: var(--orange-700);
}

/* ============================================
   ABOUT / CONTACT
   ============================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
}

.about-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-xs);
}

.about-card__title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.about-card__text {
  font-size: 14px;
  color: var(--text-body);
  line-height: 1.7;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.contact-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-panel);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  font-size: 14px;
  color: var(--text-secondary);
  text-decoration: none;
  transition: all var(--transition-fast);
}

.contact-link:hover {
  background: var(--orange-50);
  border-color: var(--orange-200);
  color: var(--orange-700);
}

.contact-link svg {
  width: 18px;
  height: 18px;
  color: var(--text-muted);
  flex-shrink: 0;
}

.contact-link:hover svg {
  color: var(--orange-500);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  background: var(--navy-700);
  padding: var(--space-8) 0;
  border-top: 2px solid var(--orange-500);
}

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

.footer__text {
  font-size: 13px;
  color: var(--text-light);
}

.footer__links {
  display: flex;
  gap: var(--space-4);
}

.footer__link {
  font-size: 13px;
  color: var(--text-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--orange-500);
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.animate-in {
  opacity: 0;
  animation: fadeInUp 0.6s ease forwards;
}

.animate-in--delay-1 { animation-delay: 0.1s; }
.animate-in--delay-2 { animation-delay: 0.2s; }
.animate-in--delay-3 { animation-delay: 0.3s; }
.animate-in--delay-4 { animation-delay: 0.4s; }
.animate-in--delay-5 { animation-delay: 0.5s; }

/* Scroll reveal */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

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

/* ============================================
   RESPONSIVE — Tablet
   ============================================ */
@media (max-width: 1024px) {
  .hero__grid {
    grid-template-columns: 1fr;
    gap: var(--space-8);
  }

  .hero__name {
    font-size: 34px;
  }

  .project-featured__grid {
    grid-template-columns: 1fr;
  }

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

  .project-cbs {
    grid-template-columns: 1fr;
  }

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

/* ============================================
   RESPONSIVE — Mobile
   ============================================ */
@media (max-width: 768px) {
  :root {
    --console-header-height: 52px;
  }

  .container {
    padding: 0 var(--space-4);
  }

  .section {
    padding: var(--space-10) 0;
  }

  .navbar__nav {
    display: none;
    position: absolute;
    top: var(--console-header-height);
    left: 0;
    right: 0;
    background: var(--navy-700);
    flex-direction: column;
    padding: var(--space-4);
    border-bottom: 2px solid var(--orange-500);
    gap: 0;
  }

  .navbar__nav.open {
    display: flex;
  }

  .navbar__link {
    height: auto;
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius-sm);
  }

  .navbar__link.active::after {
    display: none;
  }

  .navbar__link.active {
    background: rgba(255,153,0,0.1);
    color: var(--orange-500);
  }

  .navbar__cta {
    width: 100%;
    justify-content: center;
    margin-top: var(--space-2);
  }

  .navbar__mobile-toggle {
    display: flex;
  }

  .navbar__role {
    display: none;
  }

  .hero {
    padding-top: calc(var(--console-header-height) + var(--space-6));
    padding-bottom: var(--space-10);
  }

  .hero__name {
    font-size: 28px;
  }

  .hero__title {
    font-size: 17px;
  }

  .hero__actions {
    flex-direction: column;
  }

  .hero__actions .btn {
    width: 100%;
  }

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

  .section__title {
    font-size: 22px;
  }

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

  .project-pipeline__flow {
    flex-direction: column;
    align-items: flex-start;
  }

  .project-pipeline__connector {
    transform: rotate(90deg);
    margin: -4px 0 -4px 12px;
  }

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

  .footer .container {
    flex-direction: column;
    gap: var(--space-4);
    text-align: center;
  }
}

/* ============================================
   RESPONSIVE — Small Mobile
   ============================================ */
@media (max-width: 375px) {
  .hero__name {
    font-size: 24px;
  }

  .hero__trust {
    flex-direction: column;
  }

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

  .project-cbs {
    grid-template-columns: 1fr;
  }
}