/* ============================================================
   MANUEL RODRÍGUEZ VICENTE — CV/PORTFOLIO WEBSITE
   Robotics & Embedded Systems Engineer
   Modern dark theme with accent colors
   ============================================================ */

/* ---------- CSS VARIABLES ---------- */
:root {
  /* Colors */
  --bg-primary: #0a0a0f;
  --bg-secondary: #111118;
  --bg-card: #16161f;
  --bg-card-hover: #1c1c28;
  --bg-elevated: #1e1e2a;
  --border-color: #252535;
  --border-light: #2a2a3a;

  --text-primary: #e8e8f0;
  --text-secondary: #a0a0b8;
  --text-muted: #6b6b80;

  --accent-primary: #00d4aa;
  --accent-primary-dim: rgba(0, 212, 170, 0.15);
  --accent-primary-glow: rgba(0, 212, 170, 0.3);
  --accent-secondary: #6c5ce7;
  --accent-secondary-dim: rgba(108, 92, 231, 0.15);
  --accent-blue: #4dabf7;
  --accent-blue-dim: rgba(77, 171, 247, 0.12);
  --accent-orange: #ff6b35;
  --accent-orange-dim: rgba(255, 107, 53, 0.12);

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

  /* Spacing */
  --section-padding: 120px 0;
  --container-max: 1200px;

  /* Shadows */
  --card-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --card-shadow-hover: 0 8px 40px rgba(0, 0, 0, 0.5);
  --glow-primary: 0 0 30px rgba(0, 212, 170, 0.15);
  --glow-secondary: 0 0 30px rgba(108, 92, 231, 0.15);

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Border Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
}

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

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

::selection {
  background: var(--accent-primary);
  color: var(--bg-primary);
}

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

ul {
  list-style: none;
}

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

/* ---------- SCROLLBAR ---------- */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: var(--bg-primary);
}
::-webkit-scrollbar-thumb {
  background: var(--border-light);
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-muted);
}

/* ---------- SECTION BASE ---------- */
.section {
  padding: var(--section-padding);
}

.section-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

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

.section-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-primary);
  background: var(--accent-primary-dim);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 16px;
}

.section-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.02em;
}

.text-highlight {
  color: var(--accent-primary);
}

/* ---------- NAVIGATION ---------- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: 16px 0;
  transition: all var(--transition-normal);
}

.nav.scrolled {
  background: rgba(10, 10, 15, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-color);
  padding: 10px 0;
}

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

.nav-logo {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent-primary);
  letter-spacing: -0.04em;
  transition: all var(--transition-fast);
}

.nav-logo:hover {
  text-shadow: 0 0 20px var(--accent-primary-glow);
}

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

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-primary);
  transition: width var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}

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

/* Mobile Menu Button */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.mobile-menu-btn span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

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

/* Background decoration */
.hero-bg-decoration {
  position: absolute;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
}

.circuit-lines {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, rgba(0, 212, 170, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(108, 92, 231, 0.06) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 80%, rgba(77, 171, 247, 0.04) 0%, transparent 50%);
}

.circuit-lines::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

.hero-content {
  max-width: var(--container-max);
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  position: relative;
  z-index: 2;
}

/* Hero Badge */
.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent-primary);
  background: var(--accent-primary-dim);
  border: 1px solid rgba(0, 212, 170, 0.2);
  padding: 8px 20px;
  border-radius: 100px;
  margin-bottom: 28px;
  animation: fadeInUp 0.8s ease forwards;
}

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

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0, 212, 170, 0.4); }
  50% { opacity: 0.6; box-shadow: 0 0 0 8px rgba(0, 212, 170, 0); }
}

/* Hero Name */
.hero-name {
  margin-bottom: 16px;
  animation: fadeInUp 0.8s 0.1s ease forwards;
  opacity: 0;
}

.hero-greeting {
  display: block;
  font-size: 1.1rem;
  font-weight: 400;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.hero-name-main {
  display: block;
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text-primary);
}

.hero-name-accent {
  display: block;
  color: var(--accent-primary);
}

/* Hero Title */
.hero-title {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2vw, 1.25rem);
  font-weight: 500;
  color: var(--accent-secondary);
  margin-bottom: 24px;
  animation: fadeInUp 0.8s 0.2s ease forwards;
  opacity: 0;
}

.title-cursor {
  animation: blink 1s step-end infinite;
  color: var(--accent-primary);
}

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

/* Hero Description */
.hero-description {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 520px;
  line-height: 1.7;
  margin-bottom: 32px;
  animation: fadeInUp 0.8s 0.3s ease forwards;
  opacity: 0;
}

/* CTA Buttons */
.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 36px;
  animation: fadeInUp 0.8s 0.4s ease forwards;
  opacity: 0;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 600;
  padding: 12px 24px;
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent-primary);
  color: var(--bg-primary);
  box-shadow: 0 4px 20px rgba(0, 212, 170, 0.25);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(0, 212, 170, 0.4);
}

.btn-outline {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border-light);
}

.btn-outline:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 20px var(--accent-primary-dim);
}

/* Hero Contact Row */
.hero-contact-row {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  animation: fadeInUp 0.8s 0.5s ease forwards;
  opacity: 0;
}

.hero-contact-item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.hero-contact-item i {
  font-size: 0.9rem;
  color: var(--accent-primary);
}

.hero-contact-item:hover {
  color: var(--accent-primary);
}

/* Hero Visual */
.hero-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 32px;
  animation: fadeInUp 0.8s 0.3s ease forwards;
  opacity: 0;
}

.hero-image-container {
  width: 100%;
  max-width: 380px;
}

/* Image Placeholders */
.hero-image-placeholder,
.about-image-placeholder,
.project-image-placeholder,
.timeline-image-placeholder,
.contact-image-placeholder,
.company-logo-placeholder {
  background: var(--bg-card);
  border: 2px dashed var(--border-light);
  border-radius: var(--radius-lg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  color: var(--text-muted);
  transition: all var(--transition-normal);
}

.hero-image-placeholder:hover,
.about-image-placeholder:hover,
.project-image-placeholder:hover,
.timeline-image-placeholder:hover,
.contact-image-placeholder:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  background: var(--bg-card-hover);
}

.hero-image-placeholder {
  width: 100%;
  aspect-ratio: 1;
  border-radius: 50%;
  font-size: 3rem;
  border-style: solid;
  border-color: var(--border-color);
  box-shadow: 0 0 60px rgba(0, 212, 170, 0.1);
}

.hero-image-placeholder span,
.about-image-placeholder span,
.project-image-placeholder span,
.timeline-image-placeholder span,
.contact-image-placeholder span {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* Hero Stats */
.hero-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  width: 100%;
  max-width: 380px;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
  transition: all var(--transition-fast);
}

.stat-card:hover {
  border-color: var(--accent-primary);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.stat-number {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent-primary);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.3;
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--text-muted);
  font-size: 0.7rem;
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  animation: float 2s ease infinite;
}

@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(-8px); }
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(24px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================================
   ABOUT SECTION
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 60px;
  align-items: start;
}

.about-image-col {
  position: sticky;
  top: 100px;
}

.about-image-placeholder {
  width: 100%;
  aspect-ratio: 3/4;
  font-size: 4rem;
  border-radius: var(--radius-xl);
}

.about-text-large {
  font-size: 1.15rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 40px;
}

.about-text-large strong {
  color: var(--text-primary);
}

.about-details {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.about-detail-item {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.about-detail-item:hover {
  border-color: var(--accent-primary);
  background: var(--bg-card-hover);
  transform: translateX(4px);
}

.about-detail-item i {
  font-size: 1.5rem;
  color: var(--accent-primary);
  flex-shrink: 0;
  margin-top: 2px;
}

.about-detail-item h4 {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}

.about-detail-item p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================================
   SKILLS SECTION
   ============================================================ */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 20px;
}

.skill-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.skill-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.skill-card:hover::before {
  opacity: 1;
}

.skill-card:hover {
  border-color: var(--border-light);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--glow-primary);
}

.skill-icon {
  width: 48px;
  height: 48px;
  background: var(--accent-primary-dim);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: var(--accent-primary);
  margin-bottom: 16px;
}

.skill-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.skill-subtitle {
  font-size: 0.85rem;
  color: var(--accent-primary);
  font-family: var(--font-mono);
  margin-bottom: 16px;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.skill-tag {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 4px 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-color);
  border-radius: 100px;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.skill-tag:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  background: var(--accent-primary-dim);
}

/* ============================================================
   EXPERIENCE / TIMELINE
   ============================================================ */
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 24px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-color);
}

.timeline-item {
  display: flex;
  gap: 32px;
  margin-bottom: 48px;
  position: relative;
}

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

.timeline-marker {
  position: relative;
  flex-shrink: 0;
}

.timeline-dot {
  width: 16px;
  height: 16px;
  background: var(--accent-primary);
  border: 3px solid var(--bg-primary);
  border-radius: 50%;
  position: relative;
  z-index: 2;
  box-shadow: 0 0 16px var(--accent-primary-glow);
  margin-left: 17px;
}

.timeline-line {
  display: none;
}

.timeline-content {
  flex: 1;
  padding-bottom: 8px;
}

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition-normal);
}

.timeline-card:hover {
  border-color: var(--border-light);
  background: var(--bg-card-hover);
  box-shadow: var(--card-shadow-hover);
}

.timeline-card-header {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 20px;
}

.company-logo-placeholder {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  font-size: 1.25rem;
  flex-shrink: 0;
}

.timeline-date {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent-primary);
  background: var(--accent-primary-dim);
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 8px;
}

.timeline-role {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 2px;
}

.timeline-company {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.timeline-details {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 16px;
}

.timeline-details li {
  position: relative;
  padding-left: 20px;
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.timeline-details li::before {
  content: '▸';
  position: absolute;
  left: 0;
  top: 0;
  color: var(--accent-primary);
  font-size: 0.7rem;
}

.timeline-details li strong {
  color: var(--text-primary);
}

.timeline-links {
  margin-bottom: 16px;
}

.timeline-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-primary);
  padding: 8px 16px;
  background: var(--accent-primary-dim);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.timeline-link:hover {
  background: var(--accent-primary);
  color: var(--bg-primary);
}

.timeline-image-placeholder {
  width: 100%;
  aspect-ratio: 16/9;
  font-size: 2.5rem;
  border-radius: var(--radius-md);
  margin-top: 12px;
}

/* ============================================================
   EDUCATION SECTION
   ============================================================ */
.education-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}

.edu-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: all var(--transition-normal);
}

.edu-card:hover {
  border-color: var(--border-light);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.edu-card--cert {
  border-left: 3px solid var(--accent-secondary);
}

.edu-year {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-primary);
  margin-bottom: 12px;
}

.edu-degree {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.edu-school {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.edu-details h5 {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.edu-details ul {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.edu-details li {
  position: relative;
  padding-left: 16px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

.edu-details li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--accent-primary);
}

/* ============================================================
   LANGUAGES SECTION
   ============================================================ */
.languages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  max-width: 700px;
  margin: 0 auto;
}

.lang-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: center;
  transition: all var(--transition-normal);
}

.lang-card:hover {
  border-color: var(--border-light);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

.lang-flag {
  font-size: 2.5rem;
  margin-bottom: 12px;
}

.lang-name {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.lang-level {
  font-size: 0.85rem;
  color: var(--accent-primary);
  font-family: var(--font-mono);
  margin-bottom: 16px;
}

.lang-bar {
  height: 6px;
  background: var(--bg-elevated);
  border-radius: 3px;
  overflow: hidden;
}

.lang-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  border-radius: 3px;
  transition: width 1s ease;
}

.lang-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 12px;
  line-height: 1.4;
}

/* ============================================================
   PROJECTS SECTION
   ============================================================ */
.projects-subtitle {
  font-size: 1.5rem;
  font-weight: 700;
  text-align: center;
  margin: 60px 0 32px;
  color: var(--text-primary);
}

/* Featured Project */
.project-featured {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 40px;
  margin-bottom: 32px;
}

.project-featured-image {
  width: 100%;
}

.project-featured-content {
  display: flex;
  flex-direction: column;
}

.project-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-orange);
  background: var(--accent-orange-dim);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 16px;
  align-self: flex-start;
}

.project-featured-title {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.3;
}

.project-featured-text {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 24px;
}

.project-featured-text strong {
  color: var(--text-primary);
}

.project-featured-stats {
  display: flex;
  gap: 24px;
  margin-bottom: 24px;
}

.project-stat {
  text-align: center;
}

.project-stat-num {
  display: block;
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--accent-primary);
}

.project-stat-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.3;
}

.project-featured-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* Projects Grid */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.project-card:hover {
  border-color: var(--border-light);
  background: var(--bg-card-hover);
  transform: translateY(-4px);
  box-shadow: var(--card-shadow-hover);
}

.project-card-image {
  width: 100%;
}

.project-image-placeholder {
  width: 100%;
  aspect-ratio: 16/10;
  font-size: 2.5rem;
  border-radius: 0;
  border: none;
  border-bottom: 1px solid var(--border-color);
}

.project-image-placeholder.large {
  aspect-ratio: 4/3;
  font-size: 4rem;
}

.project-card-content {
  padding: 20px;
}

.project-card-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.project-card-content p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 12px;
}

.project-card-content p strong {
  color: var(--text-primary);
}

.project-period {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-primary);
}

/* Video Links */
.projects-videos {
  margin-top: 32px;
}

.video-links-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.video-link-card {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 20px;
  transition: all var(--transition-fast);
}

.video-link-card:hover {
  border-color: var(--accent-primary);
  background: var(--bg-card-hover);
  transform: translateX(4px);
  box-shadow: var(--glow-primary);
}

.video-link-icon {
  width: 48px;
  height: 48px;
  background: rgba(255, 0, 0, 0.1);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: #ff0000;
  flex-shrink: 0;
}

.video-link-card:nth-child(2) .video-link-icon {
  background: rgba(255, 0, 0, 0.1);
  color: #ff0000;
}

.video-link-card:nth-child(3) .video-link-icon {
  background: rgba(66, 133, 244, 0.1);
  color: #4285f4;
}

.video-link-info h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 2px;
}

.video-link-info p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ============================================================
   CONTACT SECTION
   ============================================================ */
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  align-items: start;
}

.contact-info h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.contact-info > p {
  color: var(--text-secondary);
  margin-bottom: 32px;
  line-height: 1.6;
}

.contact-links {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.contact-link-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.contact-link-item:hover {
  border-color: var(--accent-primary);
  background: var(--bg-card-hover);
  transform: translateX(4px);
}

.contact-link-icon {
  width: 44px;
  height: 44px;
  background: var(--accent-primary-dim);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  color: var(--accent-primary);
  flex-shrink: 0;
}

.contact-link-text {
  display: flex;
  flex-direction: column;
}

.contact-link-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.contact-link-value {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.contact-visual {
  position: sticky;
  top: 100px;
}

.contact-image-placeholder {
  width: 100%;
  aspect-ratio: 3/4;
  font-size: 4rem;
  border-radius: var(--radius-xl);
}

/* ---------- REAL IMAGES (replacing placeholders) ---------- */
.hero-profile-img {
  width: 100%;
  max-width: 380px;
  aspect-ratio: 1;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid var(--border-color);
  box-shadow: 0 0 60px rgba(0, 212, 170, 0.1);
}

.about-img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  border-radius: var(--radius-xl);
}

.timeline-img {
  width: 100%;
  aspect-ratio: 16/9;
  object-fit: cover;
  border-radius: var(--radius-md);
  margin-top: 12px;
}

.project-featured-img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--radius-lg);
}

.project-card-img {
  width: 100%;
  aspect-ratio: 16/10;
  object-fit: cover;
}

.contact-img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  border-radius: var(--radius-xl);
}

/* Prevent text overflow on small screens */
.hero-contact-item,
.contact-link-value,
.timeline-details li,
.project-featured-text,
.hero-description,
.about-text-large {
  overflow-wrap: break-word;
  word-break: break-word;
}

/* ============================================================
   FOOTER
   ============================================================ */
.footer {
  border-top: 1px solid var(--border-color);
  background: var(--bg-secondary);
  padding: 48px 0 24px;
}

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

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 32px;
}

.footer-logo {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--accent-primary);
}

.footer-nav {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.footer-nav a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.footer-nav a:hover {
  color: var(--accent-primary);
}

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

.footer-social-link {
  width: 40px;
  height: 40px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

.footer-social-link:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  background: var(--accent-primary-dim);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-bottom .fa-heart {
  color: #ff4757;
  font-size: 0.75rem;
}

/* ============================================================
   RESPONSIVE DESIGN
   ============================================================ */
@media (max-width: 1024px) {
  .hero {
    min-height: auto;
    padding: 100px 24px 50px;
  }

  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 0;
  }

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

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

  .hero-contact-row {
    justify-content: center;
  }

  .hero-visual {
    flex-direction: row;
    flex-wrap: wrap;
    justify-content: center;
    gap: 24px;
  }

  .hero-image-container {
    max-width: 200px;
  }

  .hero-stats {
    max-width: 100%;
  }

  .hero-badge {
    margin-bottom: 20px;
  }

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

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

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

  .about-image-col {
    position: static;
    max-width: 400px;
    margin: 0 auto;
  }

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

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

  .contact-visual {
    position: static;
    max-width: 400px;
    margin: 0 auto;
  }

  .skills-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }

  .hero-profile-img {
    max-width: 200px;
  }
}

@media (max-width: 768px) {
  /* Hero mobile restructure */
  .hero {
    min-height: auto;
    padding: 90px 20px 40px;
    flex-direction: column;
  }

  .hero-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 0;
  }

  .hero-visual {
    order: -1;
    flex-direction: column;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
  }

  .hero-badge {
    margin-bottom: 16px;
  }

  .hero-name {
    margin-bottom: 8px;
  }

  .hero-title {
    margin-bottom: 12px;
  }

  .hero-description {
    margin-bottom: 20px;
    font-size: 0.95rem;
  }

  .hero-cta {
    margin-bottom: 20px;
    gap: 8px;
  }

  .hero-contact-row {
    gap: 10px;
  }

  .hero-profile-img {
    max-width: 160px;
  }

  .hero-stats {
    max-width: 340px;
  }

  .contact-link-value {
    font-size: 0.85rem;
  }

  .project-featured-img {
    border-radius: var(--radius-md);
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    flex-direction: column;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    padding: 80px 32px 32px;
    transition: right var(--transition-normal);
    gap: 24px;
  }

  .nav-links.active {
    right: 0;
  }

  .mobile-menu-btn {
    display: flex;
    z-index: 1001;
  }

  .hero-image-container {
    max-width: 160px;
  }

  .hero-stats {
    grid-template-columns: 1fr 1fr;
  }

  .stat-card {
    padding: 12px;
  }

  .stat-number {
    font-size: 1.2rem;
  }

  .section {
    padding: 80px 0;
  }

  .about-detail-item {
    flex-direction: column;
  }

  .project-featured {
    padding: 24px;
  }

  .project-featured-stats {
    flex-wrap: wrap;
    gap: 16px;
  }

  .footer-top {
    flex-direction: column;
    text-align: center;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }

  .footer-nav {
    flex-direction: column;
    align-items: center;
    gap: 12px;
  }
}

@media (max-width: 480px) {
  .hero {
    padding: 80px 16px 32px;
  }

  .hero-visual {
    margin-bottom: 20px;
    gap: 12px;
  }

  .hero-name-main {
    font-size: 1.8rem;
  }

  .hero-greeting {
    font-size: 0.95rem;
  }

  .hero-title {
    font-size: 0.9rem;
    margin-bottom: 10px;
  }

  .hero-description {
    font-size: 0.85rem;
    margin-bottom: 16px;
    padding: 0 4px;
  }

  .hero-cta {
    flex-direction: column;
    width: 100%;
    gap: 8px;
    margin-bottom: 16px;
  }

  .btn {
    justify-content: center;
    width: 100%;
    font-size: 0.85rem;
    padding: 12px 20px;
  }

  .hero-contact-row {
    flex-direction: column;
    align-items: center;
    gap: 8px;
  }

  .hero-contact-item {
    font-size: 0.8rem;
  }

  .hero-profile-img {
    max-width: 140px;
  }

  .hero-stats {
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    max-width: 100%;
  }

  .stat-card {
    padding: 10px 8px;
  }

  .stat-number {
    font-size: 1.1rem;
  }

  .stat-label {
    font-size: 0.7rem;
  }

  .scroll-indicator {
    bottom: 16px;
  }

  .timeline::before {
    left: 8px;
  }

  .timeline-item {
    gap: 16px;
  }

  .timeline-dot {
    width: 12px;
    height: 12px;
    margin-left: 3px;
  }

  .timeline-card {
    padding: 20px;
  }

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

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

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

  .timeline-img {
    border-radius: var(--radius-sm);
  }

  .about-img {
    border-radius: var(--radius-lg);
  }

  .contact-img {
    border-radius: var(--radius-lg);
  }

  .hero-profile-img {
    border-width: 2px;
    box-shadow: 0 0 30px rgba(0, 212, 170, 0.1);
  }

  .about-image-placeholder,
  .contact-image-placeholder {
    font-size: 2.5rem;
  }

  .about-image-placeholder span,
  .contact-image-placeholder span {
    font-size: 0.65rem;
  }

  .hero-visual {
    gap: 16px;
  }

  .hero-image-container {
    margin: 0 auto;
  }

  .hero-badge {
    font-size: 0.75rem;
    padding: 6px 14px;
  }
}

/* ============================================================
   REVEAL ANIMATIONS (triggered by JS)
   ============================================================ */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

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

/* Staggered reveal for cards */
.skill-card:nth-child(1) { transition-delay: 0.05s; }
.skill-card:nth-child(2) { transition-delay: 0.1s; }
.skill-card:nth-child(3) { transition-delay: 0.15s; }
.skill-card:nth-child(4) { transition-delay: 0.2s; }
.skill-card:nth-child(5) { transition-delay: 0.25s; }
.skill-card:nth-child(6) { transition-delay: 0.3s; }