/* =========================================================
   THEME VARIABLES
   ========================================================= */
:root,
[data-theme="dark"] {
  --bg: #050510;
  --bg-2: #0b0b1e;
  --text: #e6e6f0;
  --text-soft: #a5a5c5;
  --text-mute: #8888aa;
  --card-bg: rgba(139,92,246,0.06);
  --card-border: rgba(139,92,246,0.22);
  --nav-bg: rgba(5,5,20,0.65);
  --nav-border: rgba(120,90,255,0.15);
  --accent-1: #8b5cf6;
  --accent-2: #06b6d4;
  --photo-ring: #050510;
}

[data-theme="light"] {
  --bg: #f4f4fb;
  --bg-2: #ffffff;
  --text: #14142b;
  --text-soft: #4a4a6a;
  --text-mute: #6a6a8a;
  --card-bg: rgba(139,92,246,0.07);
  --card-border: rgba(139,92,246,0.30);
  --nav-bg: rgba(255,255,255,0.75);
  --nav-border: rgba(139,92,246,0.20);
  --accent-1: #7c3aed;
  --accent-2: #0891b2;
  --photo-ring: #ffffff;
}

* { margin:0; padding:0; box-sizing:border-box; font-family:'Poppins',sans-serif; }
html { scroll-behavior:smooth; }

body {
  background:var(--bg);
  color:var(--text);
  overflow-x:hidden;
  transition:background .4s ease, color .4s ease;
}

#bg-canvas {
  position:fixed; top:0; left:0;
  width:100%; height:100%;
  z-index:-1;
  transition:opacity .4s ease;
}

/* ============ NAVBAR ============ */
.navbar {
  position:fixed; top:0; left:0; width:100%;
  display:flex; justify-content:space-between; align-items:center;
  padding:20px 60px;
  background:var(--nav-bg);
  backdrop-filter:blur(12px);
  -webkit-backdrop-filter:blur(12px);
  z-index:100;
  border-bottom:1px solid var(--nav-border);
  transition:background .4s ease, border-color .4s ease;
}
.logo { font-size:1.6rem; font-weight:800; color:var(--text); }
.logo span { color:var(--accent-1); }
.nav-links { display:flex; list-style:none; gap:32px; }
.nav-links a {
  color:var(--text-soft); text-decoration:none; font-size:.95rem;
  transition:.3s; position:relative;
}
.nav-links a:hover { color:var(--accent-1); }
.nav-links a::after {
  content:''; position:absolute; left:0; bottom:-6px;
  width:0; height:2px; background:var(--accent-1); transition:.3s;
}
.nav-links a:hover::after { width:100%; }

.nav-actions { display:flex; align-items:center; gap:16px; }
.theme-toggle {
  background:var(--card-bg);
  border:1px solid var(--card-border);
  color:var(--text);
  width:42px; height:42px;
  border-radius:50%;
  cursor:pointer;
  font-size:1.1rem;
  display:flex; align-items:center; justify-content:center;
  transition:.3s;
}
.theme-toggle:hover {
  transform:rotate(20deg) scale(1.1);
  border-color:var(--accent-1);
  box-shadow:0 0 20px rgba(139,92,246,0.35);
}
.menu-toggle { display:none; font-size:1.6rem; cursor:pointer; color:var(--text); }

/* ============ HERO ============ */
.hero {
  min-height:100vh;
  display:flex; align-items:center; justify-content:space-between;
  padding:120px 8% 60px; gap:60px; flex-wrap:wrap;
}
.hero-content { flex:1; min-width:320px; }
.tagline { color:var(--accent-1); font-weight:600; letter-spacing:2px; }
.hero h1 {
  font-size:clamp(2.2rem,5vw,4rem);
  font-weight:800; margin:10px 0;
  line-height:1.1;
}
.hero h1 span {
  background:linear-gradient(90deg,var(--accent-1),var(--accent-2));
  -webkit-background-clip:text; background-clip:text;
  -webkit-text-fill-color:transparent;
}
.typing {
  font-size:1.15rem; color:var(--text-soft); font-weight:400;
  margin-bottom:18px; min-height:1.6em;
}
.hero-desc { color:var(--text-soft); max-width:520px; margin-bottom:30px; line-height:1.7; }
.hero-btns { display:flex; gap:16px; flex-wrap:wrap; }
.btn {
  padding:12px 28px; border-radius:40px;
  text-decoration:none; font-weight:600; font-size:.95rem;
  transition:.3s; display:inline-block;
  cursor:pointer; border:none;
  font-family:inherit;
}
.btn.primary {
  background:linear-gradient(90deg,var(--accent-1),var(--accent-2));
  color:#fff;
  box-shadow:0 0 25px rgba(139,92,246,0.4);
}
.btn.primary:hover { transform:translateY(-3px); box-shadow:0 0 40px rgba(139,92,246,0.7); }
.btn.ghost { border:1px solid var(--accent-1); color:var(--accent-1); background:transparent; }
.btn.ghost:hover { background:var(--accent-1); color:#fff; }

/* ============ HERO PHOTO ============ */
.hero-photo { flex:1; display:flex; justify-content:center; min-width:280px; }
.photo-3d {
  width:340px; height:340px; border-radius:50%;
  background:linear-gradient(135deg,var(--accent-1),var(--accent-2));
  padding:6px;
  animation:float 5s ease-in-out infinite;
  box-shadow:0 0 60px rgba(139,92,246,0.6);
  transform-style:preserve-3d;
  perspective:1000px;
  position:relative;
}
.photo-3d::before {
  content:''; position:absolute; inset:-15px;
  border-radius:50%;
  border:1px dashed rgba(139,92,246,0.5);
  animation:spin 20s linear infinite;
}
.photo-3d img {
  width:100%; height:100%; border-radius:50%;
  object-fit:cover; border:5px solid var(--photo-ring);
  display:block;
  transition:border-color .4s ease;
}
@keyframes float {
  0%,100% { transform:translateY(0) rotateY(0deg); }
  50% { transform:translateY(-20px) rotateY(8deg); }
}
@keyframes spin {
  from { transform:rotate(0deg); }
  to { transform:rotate(360deg); }
}

/* ============ SECTIONS ============ */
.section { padding:100px 8%; }
.section-title {
  font-size:clamp(1.8rem,4vw,2.6rem);
  text-align:center; margin-bottom:60px; font-weight:700;
}
.section-title span {
  background:linear-gradient(90deg,var(--accent-1),var(--accent-2));
  -webkit-background-clip:text; background-clip:text;
  -webkit-text-fill-color:transparent;
}

/* ============ ABOUT ============ */
.about-grid { max-width:900px; margin:0 auto; text-align:center; }
.about-grid p { color:var(--text-soft); margin-bottom:20px; line-height:1.8; }
.about-grid strong { color:var(--text); }
.stats {
  display:flex; gap:24px; justify-content:center;
  margin-top:40px; flex-wrap:wrap;
}
.stat-card {
  background:var(--card-bg);
  border:1px solid var(--card-border);
  padding:25px 40px; border-radius:18px;
  transition:.3s; backdrop-filter:blur(6px);
}
.stat-card:hover { transform:translateY(-6px); border-color:var(--accent-1); }
.stat-card h3 {
  font-size:2rem;
  background:linear-gradient(90deg,var(--accent-1),var(--accent-2));
  -webkit-background-clip:text; background-clip:text;
  -webkit-text-fill-color:transparent;
}
.stat-card p { font-size:.85rem; color:var(--text-soft); margin:0; }

/* ============ SKILLS ============ */
.skills-grid {
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  gap:24px; max-width:1200px; margin:0 auto;
}
.skill-card {
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:18px; padding:28px;
  transition:.4s; backdrop-filter:blur(6px);
}
.skill-card:hover {
  transform:translateY(-8px) rotateX(4deg);
  border-color:var(--accent-1);
  box-shadow:0 20px 40px rgba(139,92,246,0.25);
}
.skill-card h3 { color:var(--accent-1); margin-bottom:12px; font-size:1.1rem; }
.skill-card p { color:var(--text-soft); font-size:.9rem; line-height:1.7; }

/* ============ TIMELINE ============ */
.timeline { max-width:820px; margin:0 auto; position:relative; padding-left:30px; }
.timeline::before {
  content:''; position:absolute; left:0; top:0; bottom:0;
  width:3px; background:linear-gradient(180deg,var(--accent-1),var(--accent-2));
  border-radius:3px;
}
.timeline-item {
  position:relative; padding:22px 24px 22px 30px;
  margin-bottom:30px;
  background:var(--card-bg);
  border-radius:14px;
  border:1px solid var(--card-border);
  transition:.3s;
}
.timeline-item:hover { border-color:var(--accent-1); transform:translateX(6px); }
.timeline-item::before {
  content:''; position:absolute; left:-38px; top:32px;
  width:14px; height:14px; border-radius:50%;
  background:var(--accent-1); box-shadow:0 0 15px var(--accent-1);
}
.timeline-item h3 { color:var(--text); margin-bottom:6px; }
.timeline-item span { color:var(--accent-1); font-size:.85rem; display:block; margin-bottom:12px; }
.timeline-item ul { padding-left:20px; color:var(--text-soft); font-size:.9rem; line-height:1.8; }

/* ============ PROJECTS ============ */
.projects-grid {
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(300px,1fr));
  gap:26px; max-width:1200px; margin:0 auto;
}
.project-card {
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:18px; padding:30px;
  transition:.4s; backdrop-filter:blur(6px);
  display:flex; flex-direction:column;
}
.project-card:hover {
  transform:translateY(-10px) scale(1.02);
  border-color:var(--accent-1);
  box-shadow:0 25px 50px rgba(139,92,246,0.3);
}
.project-card h3 { color:var(--text); margin-bottom:8px; }
.project-card .tech {
  display:inline-block; font-size:.75rem; color:var(--accent-2);
  background:rgba(6,182,212,0.12);
  padding:4px 12px; border-radius:20px; margin-bottom:14px;
  width:fit-content;
}
.project-card p { color:var(--text-soft); font-size:.9rem; line-height:1.7; margin-bottom:18px; flex-grow:1; }
.project-card a { color:var(--accent-1); text-decoration:none; font-weight:600; font-size:.9rem; }
.project-card a:hover { color:var(--accent-2); }

/* ============ CONTACT ============ */
.contact-grid {
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
  gap:22px; max-width:900px; margin:0 auto 50px;
}
.contact-card {
  text-align:center; padding:28px 18px;
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:16px;
  color:var(--text); text-decoration:none;
  transition:.3s; font-weight:500;
}
.contact-card:hover {
  transform:translateY(-6px);
  border-color:var(--accent-1);
  background:rgba(139,92,246,0.15);
  box-shadow:0 15px 30px rgba(139,92,246,0.25);
}
.location { text-align:center; color:var(--text-soft); margin-top:30px; }

/* ============ CONTACT FORM ============ */
.contact-form-wrap {
  max-width:640px;
  margin:0 auto;
  background:var(--card-bg);
  border:1px solid var(--card-border);
  border-radius:20px;
  padding:40px 36px;
  backdrop-filter:blur(8px);
}
.form-title {
  text-align:center;
  margin-bottom:28px;
  font-size:1.25rem;
  color:var(--text);
}
.form-group { margin-bottom:22px; }
.form-group label {
  display:block;
  font-size:.72rem;
  letter-spacing:2px;
  font-weight:600;
  color:var(--text-soft);
  margin-bottom:8px;
}
.form-group input,
.form-group textarea {
  width:100%;
  padding:14px 16px;
  background:var(--bg-2);
  border:1px solid var(--card-border);
  border-radius:10px;
  color:var(--text);
  font-family:inherit;
  font-size:.95rem;
  transition:.3s;
  resize:vertical;
}
.form-group input:focus,
.form-group textarea:focus {
  outline:none;
  border-color:var(--accent-1);
  box-shadow:0 0 0 3px rgba(139,92,246,0.15);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color:var(--text-mute);
}
.send-btn {
  width:100%;
  padding:16px;
  font-size:.85rem;
  letter-spacing:3px;
  font-weight:700;
}
.form-status {
  text-align:center;
  margin-top:14px;
  font-size:.85rem;
  min-height:1.2em;
}
.form-status.success { color:#10b981; }
.form-status.error { color:#ef4444; }

/* ============ FOOTER ============ */
footer {
  text-align:center; padding:30px 20px;
  border-top:1px solid var(--card-border);
  color:var(--text-mute); font-size:.85rem;
  transition:border-color .4s ease;
}

/* ============ REVEAL ANIMATION ============ */
.reveal {
  opacity:0; transform:translateY(40px);
  transition:all 0.9s cubic-bezier(.2,.8,.2,1);
}
.reveal.active { opacity:1; transform:translateY(0); }

/* ============ RESPONSIVE ============ */
@media (max-width:900px) {
  .navbar { padding:16px 24px; }
  .nav-links {
    position:fixed; top:64px; right:-100%;
    flex-direction:column;
    background:var(--nav-bg);
    backdrop-filter:blur(20px);
    -webkit-backdrop-filter:blur(20px);
    width:220px; height:calc(100vh - 64px);
    padding:30px 24px;
    transition:.4s;
    border-left:1px solid var(--card-border);
  }
  .nav-links.open { right:0; }
  .menu-toggle { display:block; }
  .hero { flex-direction:column-reverse; text-align:center; padding-top:130px; }
  .hero-btns { justify-content:center; }
  .photo-3d { width:240px; height:240px; }
  .section { padding:80px 6%; }
  .contact-form-wrap { padding:28px 20px; }
}