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

:root {
  --bg-primary: #080d1a;
  --bg-secondary: #0d1626;
  --bg-card: #0f1c33;
  --accent: #00b4d8;
  --accent-bright: #60efff;
  --accent-glow: rgba(0, 180, 216, 0.15);
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #4a6080;
  --border: #1a3a5c;
  --green: #00d97e;
  --red: #ff6b6b;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: 'Inter', sans-serif;
  line-height: 1.6;
  min-height: 100vh;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ===== NAV ===== */
nav {
  position: fixed;
  top: 0;
  width: 100%;
  background: rgba(8, 13, 26, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
  z-index: 1000;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}

.nav-logo {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.1rem;
  color: var(--accent-bright);
  font-weight: 600;
  text-decoration: none;
}

.nav-logo .cursor {
  animation: blink 1s infinite;
  color: var(--accent);
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent-bright);
}

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

.nav-hamburger span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--text-secondary);
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              opacity   0.25s ease,
              background 0.2s ease;
  transform-origin: center;
}

/* Hamburger → X */
.nav-hamburger.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
  background: var(--accent-bright);
}
.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-hamburger.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
  background: var(--accent-bright);
}

/* ===== PAGE WRAPPER ===== */
.page { padding-top: 60px; min-height: 100vh; }

/* ===== HERO ===== */
.hero {
  min-height: calc(100vh - 60px);
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 2rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 30% 50%, rgba(0, 180, 216, 0.07) 0%, transparent 60%),
    radial-gradient(ellipse at 70% 50%, rgba(96, 239, 255, 0.04) 0%, transparent 60%);
  pointer-events: none;
}

/* subtle grid bg */
.hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,180,216,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,180,216,0.04) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
}

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

.hero-prefix {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
}

.hero h1 {
  font-family: 'JetBrains Mono', monospace;
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
  line-height: 1.1;
}

.hero h1 span { color: var(--accent-bright); }

.hero-typing {
  font-family: 'JetBrains Mono', monospace;
  font-size: clamp(1rem, 2.5vw, 1.25rem);
  color: var(--accent);
  margin-bottom: 1.5rem;
  min-height: 2rem;
}

.typed-cursor {
  color: var(--accent-bright);
  animation: blink 1s infinite;
}

.hero-description {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 480px;
  margin: 0 auto 2.5rem;
  line-height: 1.8;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== AVAILABILITY ===== */
.availability {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--green);
  background: rgba(0, 217, 126, 0.08);
  border: 1px solid rgba(0, 217, 126, 0.3);
  border-radius: 20px;
  padding: 0.35rem 0.85rem;
  margin-bottom: 1.5rem;
}

.availability::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--green);
  animation: pulse 2s infinite;
}

/* ===== BUTTONS ===== */
.btn {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  padding: 0.75rem 1.75rem;
  border-radius: 4px;
  text-decoration: none;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
  display: inline-block;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-primary);
  font-weight: 600;
}

.btn-primary:hover {
  background: var(--accent-bright);
  box-shadow: 0 0 20px rgba(0, 180, 216, 0.4);
}

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

.btn-outline:hover {
  background: var(--accent-glow);
  box-shadow: 0 0 15px rgba(0, 180, 216, 0.2);
}

/* ===== SECTIONS ===== */
.section {
  padding: 5rem 2rem;
  max-width: 1000px;
  margin: 0 auto;
}

.page-header + .section {
  padding-top: 2rem;
}

.section-header { margin-bottom: 3rem; }

.section-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-title::before {
  content: '//';
  color: var(--accent);
  font-weight: 400;
}

.section-divider {
  height: 1px;
  background: linear-gradient(to right, var(--accent), transparent);
  margin-top: 0.75rem;
  max-width: 300px;
}

/* ===== HOME FEATURED CARDS ===== */
.featured-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

@media (max-width: 768px) {
  .featured-grid {
    grid-template-columns: 1fr;
  }
}

.featured-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.75rem;
  transition: all 0.2s;
  text-decoration: none;
  display: block;
}

.featured-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 20px rgba(0, 180, 216, 0.1);
  transform: translateY(-2px);
}

.featured-card-tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}

.featured-card h3 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.05rem;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.featured-card p {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* ===== RESUME ===== */
.resume-section { margin-bottom: 3.5rem; }

.resume-section-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.8rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.resume-section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.resume-entry {
  margin-bottom: 2.25rem;
  padding-left: 1.25rem;
  border-left: 2px solid var(--border);
  transition: border-color 0.2s;
}

.resume-entry:hover { border-left-color: var(--accent); }

.resume-entry-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.2rem;
}

.resume-entry-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.resume-entry-date {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--accent);
  white-space: nowrap;
}

.resume-entry-org {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.resume-entry-org span { color: var(--text-muted); }

.resume-entry ul { list-style: none; padding: 0; }

.resume-entry ul li {
  font-size: 0.875rem;
  color: var(--text-secondary);
  padding: 0.2rem 0;
  padding-left: 1.25rem;
  position: relative;
  line-height: 1.7;
}

.resume-entry ul li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--accent);
}

.resume-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.tag {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  padding: 0.2rem 0.6rem;
  border-radius: 3px;
  background: rgba(0, 180, 216, 0.08);
  border: 1px solid rgba(0, 180, 216, 0.25);
  color: var(--accent);
}

.resume-link {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--text-muted);
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  margin-bottom: 0.6rem;
  transition: color 0.2s;
}

.resume-link:hover { color: var(--accent); }

/* ===== SKILLS ===== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 1.25rem;
}

.skill-group {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.5rem;
  transition: border-color 0.2s;
}

.skill-group:hover { border-color: var(--accent); }

.skill-group-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.skill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-item {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--text-secondary);
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 0.25rem 0.6rem;
}

/* ===== PROJECTS ===== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.75rem;
  transition: all 0.2s;
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  border-color: var(--accent);
  box-shadow: 0 0 20px rgba(0, 180, 216, 0.1);
  transform: translateY(-2px);
}

.project-type {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.68rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.75rem;
}

.project-title {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.project-description {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  flex: 1;
  line-height: 1.75;
}

.project-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.project-links { display: flex; gap: 0.75rem; }

.project-link {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.75rem;
  color: var(--accent);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  transition: color 0.2s;
}

.project-link:hover { color: var(--accent-bright); }

/* ===== CONTACT ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 3rem;
  align-items: start;
}

.contact-info h3 {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1rem;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.contact-info p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.8;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.contact-item-label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  width: 75px;
  flex-shrink: 0;
  padding-top: 2px;
}

.contact-item-value {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  color: var(--accent);
  text-decoration: none;
  word-break: break-all;
  transition: color 0.2s;
}

.contact-item-value:hover { color: var(--accent-bright); }

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.7rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.form-group input,
.form-group textarea,
.form-group select {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 4px;
  padding: 0.75rem 1rem;
  color: var(--text-primary);
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
  width: 100%;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 10px rgba(0, 180, 216, 0.15);
}

.form-group select option { background: var(--bg-secondary); }

.form-group textarea {
  resize: vertical;
  min-height: 140px;
}

.form-status {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.78rem;
  padding: 0.6rem 0.75rem;
  border-radius: 4px;
  display: none;
}

.form-status.success {
  color: var(--green);
  background: rgba(0, 217, 126, 0.08);
  border: 1px solid rgba(0, 217, 126, 0.25);
  display: block;
}

.form-status.error {
  color: var(--red);
  background: rgba(255, 107, 107, 0.08);
  border: 1px solid rgba(255, 107, 107, 0.25);
  display: block;
}

/* ===== FOOTER ===== */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
}

footer p {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.72rem;
  color: var(--text-muted);
}

footer a { color: var(--accent); text-decoration: none; }
footer a:hover { color: var(--accent-bright); }

/* ===== PAGE HEADER (non-home pages) ===== */
.page-header {
  padding: 4rem 2rem 2rem;
  max-width: 1000px;
  margin: 0 auto;
  border-bottom: 1px solid var(--border);
  margin-bottom: 1rem;
}

.page-header h1 {
  font-family: 'JetBrains Mono', monospace;
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.page-header h1 .prefix { color: var(--accent); font-weight: 400; }

.page-header p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-top: 0.75rem;
  max-width: 600px;
}

/* ===== ANIMATIONS ===== */
@keyframes blink {
  0%, 50% { opacity: 1; }
  51%, 100% { opacity: 0; }
}

@keyframes pulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(0, 217, 126, 0.4); }
  50% { opacity: 0.8; box-shadow: 0 0 0 5px rgba(0, 217, 126, 0); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(16px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in { opacity: 0; animation: fadeInUp 0.5s ease forwards; }
.fade-in-delay-1 { animation-delay: 0.1s; }
.fade-in-delay-2 { animation-delay: 0.2s; }
.fade-in-delay-3 { animation-delay: 0.3s; }
.fade-in-delay-4 { animation-delay: 0.4s; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .nav-links {
    position: absolute;
    top: 60px;
    left: 0;
    width: 100%;
    background: rgba(8, 13, 26, 0.98);
    flex-direction: column;
    padding: 0 2rem;
    border-bottom: 1px solid transparent;
    gap: 0;
    /* closed state */
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    pointer-events: none;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1),
                opacity    0.3s ease,
                padding    0.3s ease,
                border-color 0.3s ease;
    display: flex; /* always flex, controlled by max-height */
  }

  .nav-links.open {
    max-height: 320px;
    opacity: 1;
    pointer-events: all;
    padding: 1.25rem 2rem;
    border-bottom-color: var(--border);
    gap: 1.25rem;
  }

  /* staggered link fade-in */
  .nav-links li {
    opacity: 0;
    transform: translateX(-10px);
    transition: opacity 0.25s ease, transform 0.25s ease;
  }

  .nav-links.open li:nth-child(1) { opacity: 1; transform: none; transition-delay: 0.05s; }
  .nav-links.open li:nth-child(2) { opacity: 1; transform: none; transition-delay: 0.10s; }
  .nav-links.open li:nth-child(3) { opacity: 1; transform: none; transition-delay: 0.15s; }
  .nav-links.open li:nth-child(4) { opacity: 1; transform: none; transition-delay: 0.20s; }
  .nav-links.open li:nth-child(5) { opacity: 1; transform: none; transition-delay: 0.25s; }

  .nav-hamburger { display: flex; }

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

  .section { padding: 3rem 1.5rem; }

  .page-header { padding: 3rem 1.5rem 1.5rem; }

  .resume-entry-header { flex-direction: column; }
}