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

:root {
  --font-sans: "DM Sans", sans-serif;
  --font-display: "Outfit", sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  --bg: hsl(240, 10%, 4%);
  --fg: hsl(0, 0%, 98%);
  --primary: hsl(265, 89%, 66%);
  --primary-rgb: 139, 92, 246;
  --secondary: hsl(190, 90%, 50%);
  --secondary-rgb: 6, 182, 212;
  --accent: hsl(320, 80%, 60%);
  --accent-rgb: 236, 72, 153;
  --muted: hsl(240, 6%, 15%);
  --muted-fg: hsl(240, 5%, 65%);
  --border: hsl(240, 6%, 20%);
  --card: hsl(240, 8%, 8%);
  --radius: 0.75rem;
}

html { scroll-behavior: smooth; }

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

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--muted); border-radius: 5px; }
::-webkit-scrollbar-thumb:hover { background: var(--primary); }

/* ===== PROGRESS BAR ===== */
#progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0%;
  background: linear-gradient(to right, var(--primary), var(--accent), var(--secondary));
  z-index: 9999;
  transition: width 0.1s linear;
}

/* ===== NAVBAR ===== */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  transition: background 0.3s, backdrop-filter 0.3s, box-shadow 0.3s;
}

#navbar.scrolled {
  background: hsla(240, 10%, 4%, 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 1px 0 var(--border);
}

.nav-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--fg);
  text-decoration: none;
  letter-spacing: -0.5px;
}
.logo-dot { color: var(--primary); }

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

.nav-link {
  color: var(--muted-fg);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.2s;
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--primary);
  border-radius: 2px;
  transition: width 0.3s;
}
.nav-link:hover { color: var(--fg); }
.nav-link:hover::after { width: 100%; }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px; height: 2px;
  background: var(--fg);
  border-radius: 2px;
  transition: transform 0.3s, opacity 0.3s;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

.mobile-menu {
  display: none;
  flex-direction: column;
  gap: 0;
  background: hsla(240, 10%, 6%, 0.97);
  border-top: 1px solid var(--border);
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.35s ease;
}
.mobile-menu.open { max-height: 300px; }
.mobile-link {
  color: var(--muted-fg);
  text-decoration: none;
  padding: 1rem 1.5rem;
  font-weight: 500;
  border-bottom: 1px solid var(--border);
  transition: color 0.2s, background 0.2s;
}
.mobile-link:hover { color: var(--fg); background: var(--muted); }

/* ===== UTILITY ===== */
.text-gradient {
  background: linear-gradient(to right, var(--primary), var(--accent), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.text-primary { color: var(--primary); }
.text-secondary { color: var(--secondary); }
.text-accent { color: var(--accent); }

.glass-card {
  background: hsla(240, 8%, 12%, 0.6);
  border: 1px solid hsla(255, 255%, 255%, 0.06);
  border-radius: var(--radius);
  padding: 1.5rem;
  backdrop-filter: blur(8px);
  box-shadow: 0 4px 24px rgba(0,0,0,0.3);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1.5rem;
  border-radius: 0.5rem;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.2s;
  border: none;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover { background: hsl(265, 89%, 58%); transform: translateY(-1px); }

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

.btn-gradient {
  background: linear-gradient(to right, var(--primary), var(--accent));
  color: #fff;
  width: 100%;
  justify-content: center;
  padding: 0.8rem;
  font-size: 1rem;
}
.btn-gradient:hover { opacity: 0.9; transform: translateY(-1px); }

section { padding: 6rem 0; }
.section-container { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; }
.section-header { text-align: center; margin-bottom: 3.5rem; }
.section-header h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 2.8rem);
  font-weight: 700;
  margin-bottom: 0.75rem;
  letter-spacing: -0.5px;
}
.section-header p {
  color: var(--muted-fg);
  font-size: 1.05rem;
  max-width: 560px;
  margin: 0 auto;
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: 80px;
  position: relative;
}

.hero-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  width: 100%;
}

.greeting {
  font-family: var(--font-mono);
  color: var(--primary);
  font-size: 1rem;
  margin-bottom: 0.5rem;
  letter-spacing: 0.05em;
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 4.5rem);
  font-weight: 800;
  line-height: 1.05;
  letter-spacing: -1px;
  margin-bottom: 1.25rem;
}

.hero-bio {
  color: var(--muted-fg);
  font-size: 1.1rem;
  line-height: 1.75;
  max-width: 480px;
  margin-bottom: 2rem;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2rem;
}

.social-links {
  display: flex;
  gap: 1rem;
}
.social-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 42px; height: 42px;
  border-radius: 50%;
  border: 1px solid var(--border);
  color: var(--muted-fg);
  text-decoration: none;
  transition: all 0.2s;
}
.social-links a:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

/* Image */
.hero-image { display: flex; justify-content: center; align-items: center; }
.image-wrapper {
  position: relative;
  width: 320px; height: 320px;
  display: flex; align-items: center; justify-content: center;
}

.ring {
  position: absolute;
  border-radius: 50%;
  border: 2px solid transparent;
}
.ring-1 {
  width: 340px; height: 340px;
  border-top-color: var(--primary);
  border-right-color: var(--primary);
  animation: spin 10s linear infinite;
}
.ring-2 {
  width: 370px; height: 370px;
  border-bottom-color: var(--secondary);
  border-left-color: var(--accent);
  animation: spin 15s linear infinite reverse;
}

@keyframes spin { to { transform: rotate(360deg); } }

.profile-img {
  width: 290px; height: 290px;
  border-radius: 50%;
  object-fit: cover;
  object-position: top center;
  border: 4px solid var(--muted);
  position: relative;
  z-index: 1;
}

.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  color: var(--muted-fg);
  animation: bounce 2s ease-in-out infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ===== JOURNEY ===== */
.journey { background: var(--bg); }

.journey-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
}

.col-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 2rem;
}
.col-title--secondary { color: var(--secondary); }
.col-title--accent { color: var(--accent); }

.timeline {
  position: relative;
  padding-left: 1.5rem;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: var(--border);
}

.timeline-item {
  position: relative;
  margin-bottom: 1.5rem;
}

.timeline-dot {
  position: absolute;
  left: -1.85rem;
  top: 1.4rem;
  width: 12px; height: 12px;
  border-radius: 50%;
  border: 2px solid var(--bg);
}
.dot--secondary { background: var(--secondary); box-shadow: 0 0 8px var(--secondary); }
.dot--accent { background: var(--accent); box-shadow: 0 0 8px var(--accent); }

.timeline-item .glass-card h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
  line-height: 1.4;
}
.company {
  color: var(--muted-fg);
  font-size: 0.875rem;
  margin-bottom: 0.3rem;
}
.period {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--primary);
  background: hsla(265, 89%, 66%, 0.12);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  margin-bottom: 0.75rem;
}
.timeline-item .glass-card ul {
  padding-left: 1rem;
  color: var(--muted-fg);
  font-size: 0.875rem;
  line-height: 1.65;
}
.timeline-item .glass-card ul li { margin-bottom: 0.3rem; }

/* ===== SKILLS ===== */
.skills { position: relative; overflow: hidden; }
.bg-blob {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 800px; height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, hsla(265, 89%, 66%, 0.05) 0%, transparent 70%);
  pointer-events: none;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.skill-card { position: relative; z-index: 1; }

.skill-category {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.skill-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px; height: 32px;
  border-radius: 8px;
}
.skill-icon--primary { background: hsla(265, 89%, 66%, 0.15); color: var(--primary); }
.skill-icon--secondary { background: hsla(190, 90%, 50%, 0.15); color: var(--secondary); }
.skill-icon--accent { background: hsla(320, 80%, 60%, 0.15); color: var(--accent); }

.skill-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tag {
  font-size: 0.8rem;
  padding: 0.25rem 0.65rem;
  border-radius: 4px;
  background: var(--muted);
  color: var(--muted-fg);
  border: 1px solid var(--border);
  transition: all 0.2s;
}
.tag:hover { border-color: var(--primary); color: var(--primary); }

/* ===== CONTACT ===== */
.contact { background: var(--bg); }

.contact-card {
  max-width: 660px;
  margin: 0 auto;
  background: hsl(240, 8%, 8%);
  border-radius: 1.5rem;
  padding: 2.5rem;
  box-shadow: 0 25px 60px rgba(0,0,0,0.4);
}

.form-group { margin-bottom: 1.25rem; }
.form-group label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 0.4rem;
  color: var(--muted-fg);
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--muted);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--fg);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
  resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px hsla(265, 89%, 66%, 0.15);
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: hsl(240, 5%, 45%); }

.spinner {
  display: inline-block;
  width: 16px; height: 16px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
  vertical-align: middle;
}

.form-success {
  text-align: center;
  padding: 1.5rem;
  color: var(--secondary);
  font-weight: 500;
  font-size: 1rem;
}

/* ===== FOOTER ===== */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
}
footer p {
  font-family: var(--font-mono);
  color: var(--muted-fg);
  font-size: 0.85rem;
}

/* ===== ANIMATIONS ===== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}
.delay-100 { transition-delay: 0.1s; }
.delay-200 { transition-delay: 0.2s; }
.delay-300 { transition-delay: 0.3s; }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .journey-grid { grid-template-columns: 1fr; }
}

@media (max-width: 700px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2.5rem;
  }
  .hero-image { order: -1; }
  .hero-bio { margin-left: auto; margin-right: auto; }
  .hero-buttons { justify-content: center; }
  .social-links { justify-content: center; }
  .image-wrapper { width: 240px; height: 240px; }
  .ring-1 { width: 260px; height: 260px; }
  .ring-2 { width: 285px; height: 285px; }
  .profile-img { width: 220px; height: 220px; }
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .mobile-menu { display: flex; }
  .skills-grid { grid-template-columns: 1fr; }
  .contact-card { padding: 1.5rem; }
}

@media (max-width: 480px) {
  section { padding: 4rem 0; }
  .section-header h2 { font-size: 1.9rem; }
}