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

:root {
  --bg: #0b0f19;
  --bg-alt: #10162a;
  --surface: #151c30;
  --surface-hover: #1b2440;
  --text: #eef1fb;
  --text-muted: #9aa4c2;
  --primary: #6c63ff;
  --primary-light: #8f88ff;
  --accent: #2dd4bf;
  --gradient: linear-gradient(135deg, #6c63ff 0%, #2dd4bf 100%);
  --border: #232c47;
  --radius: 16px;
  --shadow: 0 10px 40px rgba(0,0,0,0.35);
  --font-heading: 'Poppins', sans-serif;
  --font-body: 'Inter', sans-serif;
}

html { scroll-behavior: smooth; }

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

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Progress Bar ===== */
#progress-bar {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0%;
  background: var(--gradient);
  z-index: 2000;
  transition: width 0.1s ease-out;
}

/* ===== Reveal Animation ===== */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Navbar ===== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 18px 0;
  transition: background 0.3s ease, padding 0.3s ease, box-shadow 0.3s ease;
}
.navbar.scrolled {
  background: rgba(11, 15, 25, 0.85);
  backdrop-filter: blur(12px);
  padding: 12px 0;
  box-shadow: 0 4px 20px rgba(0,0,0,0.25);
}
.nav-inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}
.logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.5rem;
  letter-spacing: 0.5px;
}
.logo span { color: var(--accent); }
.nav-links {
  display: flex;
  gap: 32px;
  flex: 1;
  justify-content: center;
}
.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  position: relative;
  padding: 4px 0;
  transition: color 0.25s ease;
}
.nav-links a::after {
  content: '';
  position: absolute;
  left: 0; bottom: -2px;
  width: 0; height: 2px;
  background: var(--gradient);
  transition: width 0.25s ease;
}
.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after { width: 100%; }

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 26px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: transform 0.25s ease, box-shadow 0.25s ease, background 0.25s ease;
  white-space: nowrap;
}
.btn-nav {
  background: var(--gradient);
  color: #fff;
  padding: 10px 22px;
}
.btn-nav:hover { transform: translateY(-2px); box-shadow: 0 8px 20px rgba(108,99,255,0.4); }
.btn-primary {
  background: var(--gradient);
  color: #fff;
  box-shadow: 0 8px 24px rgba(108,99,255,0.3);
}
.btn-primary:hover { transform: translateY(-3px); box-shadow: 0 12px 30px rgba(108,99,255,0.45); }
.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-outline:hover { border-color: var(--primary-light); background: var(--surface); transform: translateY(-3px); }

.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.4rem;
  cursor: pointer;
}

/* ===== Hero ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 120px 24px 80px;
  overflow: hidden;
}
.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at 20% 20%, rgba(108,99,255,0.25), transparent 45%),
    radial-gradient(circle at 80% 30%, rgba(45,212,191,0.18), transparent 40%),
    radial-gradient(circle at 50% 90%, rgba(108,99,255,0.15), transparent 45%);
  z-index: -1;
}
.hero-inner { max-width: 760px; }
.eyebrow {
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-size: 0.85rem;
  margin-bottom: 14px;
}
.hero h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  font-weight: 800;
  line-height: 1.1;
  background: linear-gradient(135deg, #fff 30%, #b7b2ff 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 10px;
}
.typewriter {
  font-family: var(--font-heading);
  font-size: clamp(1.2rem, 3vw, 1.7rem);
  font-weight: 500;
  color: var(--primary-light);
  min-height: 2.2rem;
  margin-bottom: 20px;
}
.cursor { animation: blink 0.9s infinite; color: var(--accent); }
@keyframes blink { 50% { opacity: 0; } }

.hero-desc {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 620px;
  margin: 0 auto 34px;
}
.hero-cta {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 36px;
}
.hero-socials {
  display: flex;
  gap: 16px;
  justify-content: center;
}
.hero-socials a {
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  color: var(--text-muted);
  transition: all 0.25s ease;
}
.hero-socials a:hover {
  background: var(--gradient);
  border-color: transparent;
  color: #fff;
  transform: translateY(-4px);
}

.scroll-down {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-muted);
  font-size: 1.2rem;
  animation: bounce 2s infinite;
}
@keyframes bounce {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, 10px); }
}

/* ===== Section Base ===== */
.section { padding: 110px 0; }
.section-alt { background: var(--bg-alt); }
.section-tag {
  text-align: center;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-size: 0.82rem;
  margin-bottom: 10px;
}
.section-title {
  text-align: center;
  font-family: var(--font-heading);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  margin-bottom: 60px;
}

/* ===== About ===== */
.about-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.3fr;
  gap: 64px;
  align-items: center;
}
.about-visual { display: flex; flex-direction: column; align-items: center; gap: 36px; }
.avatar-ring {
  width: 220px; height: 220px;
  border-radius: 50%;
  padding: 6px;
  background: var(--gradient);
  display: flex; align-items: center; justify-content: center;
  box-shadow: var(--shadow);
}
.avatar-photo {
  width: 100%; height: 100%;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 15%;
  background: var(--surface);
}
.stat-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 14px;
  width: 100%;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 18px 8px;
  text-align: center;
}
.stat-num {
  font-family: var(--font-heading);
  font-size: 1.7rem;
  font-weight: 700;
  color: var(--accent);
}
.stat-suffix { font-size: 1.1rem; font-weight: 700; color: var(--accent); }
.stat-card p { font-size: 0.78rem; color: var(--text-muted); margin-top: 4px; }

.about-text h3 {
  font-family: var(--font-heading);
  font-size: 1.35rem;
  margin-bottom: 16px;
  font-weight: 600;
}
.about-text p { color: var(--text-muted); margin-bottom: 16px; }
.about-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin-top: 24px;
}
.info-item { display: flex; gap: 12px; align-items: flex-start; }
.info-item i {
  width: 38px; height: 38px;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--accent);
}
.info-item span { display: block; font-size: 0.75rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
.info-item p { font-size: 0.92rem; font-weight: 500; }

/* ===== Skills ===== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 22px;
}
.skill-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 26px;
  transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}
.skill-card:hover {
  transform: translateY(-6px);
  border-color: var(--primary);
  background: var(--surface-hover);
}
.skill-card i {
  font-size: 1.6rem;
  color: #fff;
  width: 52px; height: 52px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 12px;
  background: var(--gradient);
  margin-bottom: 18px;
}
.skill-card h4 { font-size: 1.05rem; margin-bottom: 8px; font-weight: 600; }
.skill-card p { color: var(--text-muted); font-size: 0.9rem; }

/* ===== Timeline ===== */
.timeline {
  position: relative;
  max-width: 820px;
  margin: 0 auto;
  padding-left: 30px;
  border-left: 2px solid var(--border);
}
.timeline-item { position: relative; padding: 0 0 50px 34px; }
.timeline-item:last-child { padding-bottom: 0; }
.timeline-dot {
  position: absolute;
  left: -41px;
  top: 4px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--gradient);
  box-shadow: 0 0 0 4px var(--bg), 0 0 0 6px var(--border);
}
.timeline-date {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent);
  background: rgba(45,212,191,0.1);
  padding: 4px 12px;
  border-radius: 50px;
  margin-bottom: 10px;
}
.timeline-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px 28px;
}
.timeline-content h3 { font-family: var(--font-heading); font-size: 1.15rem; font-weight: 600; }
.timeline-content h4 { font-size: 0.9rem; color: var(--text-muted); font-weight: 500; margin-bottom: 14px; }
.timeline-content ul { display: flex; flex-direction: column; gap: 9px; }
.timeline-content li {
  position: relative;
  padding-left: 20px;
  color: var(--text-muted);
  font-size: 0.92rem;
}
.timeline-content li::before {
  content: '';
  position: absolute;
  left: 0; top: 8px;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
}
.timeline-content a { color: var(--primary-light); text-decoration: underline; }

/* ===== Tools ===== */
.tools-columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 28px;
}
.tools-col {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
}
.tools-col h4 {
  display: flex; align-items: center; gap: 10px;
  margin-bottom: 18px;
  font-size: 1rem;
  color: var(--text);
}
.tools-col h4 i { color: var(--accent); }
.tag-list { display: flex; flex-wrap: wrap; gap: 10px; }
.tag {
  background: rgba(108,99,255,0.12);
  color: var(--primary-light);
  border: 1px solid rgba(108,99,255,0.3);
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 0.82rem;
  font-weight: 500;
}

/* ===== Education ===== */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 22px;
  margin-bottom: 50px;
}
.edu-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 26px;
  text-align: center;
  transition: transform 0.3s ease;
}
.edu-card:hover { transform: translateY(-6px); border-color: var(--primary); }
.edu-card i { font-size: 1.8rem; color: var(--accent); margin-bottom: 14px; }
.edu-year {
  display: block;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 8px;
  font-weight: 600;
}
.edu-card h4 { font-size: 1.05rem; margin-bottom: 6px; }
.edu-card p { color: var(--text-muted); font-size: 0.9rem; }

.extra-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 22px;
}
.extra-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 26px;
}
.extra-card h4 { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; }
.extra-card h4 i { color: var(--accent); }
.extra-card p { color: var(--text-muted); font-size: 0.92rem; }

/* ===== Contact ===== */
.contact-lead {
  text-align: center;
  color: var(--text-muted);
  max-width: 520px;
  margin: -40px auto 50px;
}
.contact-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 50px;
}
.contact-info { display: flex; flex-direction: column; gap: 26px; }
.contact-item { display: flex; gap: 16px; align-items: flex-start; }
.contact-item i {
  width: 46px; height: 46px;
  flex-shrink: 0;
  display: flex; align-items: center; justify-content: center;
  background: var(--gradient);
  color: #fff;
  border-radius: 12px;
  font-size: 1.05rem;
}
.contact-item span { display: block; font-size: 0.78rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 2px; }
.contact-item a { font-weight: 600; font-size: 1rem; }
.contact-socials { display: flex; gap: 14px; margin-top: 10px; }
.contact-socials a {
  width: 42px; height: 42px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  border: 1.5px solid var(--border);
  color: var(--text-muted);
  transition: all 0.25s ease;
}
.contact-socials a:hover { background: var(--gradient); border-color: transparent; color: #fff; transform: translateY(-3px); }

.contact-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 34px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.contact-form input,
.contact-form textarea {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 13px 16px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  resize: vertical;
  transition: border-color 0.25s ease;
}
.contact-form input:focus,
.contact-form textarea:focus { outline: none; border-color: var(--primary); }
.contact-form input::placeholder,
.contact-form textarea::placeholder { color: var(--text-muted); }
.contact-form .btn { align-self: flex-start; margin-top: 6px; }
.form-note { font-size: 0.85rem; color: var(--accent); min-height: 1.2em; }

/* ===== Footer ===== */
.footer { padding: 34px 0; border-top: 1px solid var(--border); }
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.footer p { color: var(--text-muted); font-size: 0.88rem; }
.back-top {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-muted);
  transition: all 0.25s ease;
}
.back-top:hover { background: var(--gradient); color: #fff; border-color: transparent; transform: translateY(-3px); }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .about-grid, .contact-grid { grid-template-columns: 1fr; }
  .about-visual { order: -1; }
}

@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 68px; left: 0; right: 0;
    background: rgba(11,15,25,0.98);
    backdrop-filter: blur(12px);
    flex-direction: column;
    align-items: center;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
  }
  .nav-links.open { max-height: 420px; border-bottom: 1px solid var(--border); }
  .nav-links li { width: 100%; text-align: center; }
  .nav-links a { display: block; padding: 16px 0; }
  .btn-nav { display: none; }
  .menu-toggle { display: block; }
  .about-info { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .stat-cards { grid-template-columns: 1fr; }
  .section { padding: 80px 0; }
}