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

:root {
  --accent: #00bcd4;
  --accent-bright: #00fff7;
  --bg: #0d0d0d;
  --bg2: #141414;
  --bg3: #1a1a1a;
  --border: rgba(255,255,255,0.07);
  --text: #e8e8e8;
  --muted: #888;
  --nav-h: 70px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Segoe UI', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

.accent { color: var(--accent); }

.typewriter-cursor {
  display: inline-block;
  color: var(--accent);
  margin-left: 2px;
  animation: blink 0.7s step-end infinite;
}
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

h1, h2, h3 { line-height: 1.2; }

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

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

/* -----------------------------------------------
   PARTICLES
----------------------------------------------- */
#particles-js {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* -----------------------------------------------
   SCROLLBAR
----------------------------------------------- */
::-webkit-scrollbar { width: 6px; background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--accent); border-radius: 6px; }

/* -----------------------------------------------
   NAV
----------------------------------------------- */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  background: rgba(13,13,13,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: var(--nav-h);
}

.nav-inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
  white-space: nowrap;
  flex-shrink: 0;
}
.nav-logo span { color: var(--accent); }

.nav-links {
  list-style: none;
  display: flex;
  gap: 0.3rem;
  flex: 1;
  justify-content: center;
}

.nav-links a {
  padding: 0.45rem 0.9rem;
  border-radius: 6px;
  font-size: 0.95rem;
  color: var(--muted);
  transition: color 0.2s, background 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
  background: rgba(0,188,212,0.08);
}

.nav-hire {
  flex-shrink: 0;
  padding: 0.55rem 1.4rem !important;
  border-radius: 6px !important;
  font-size: 0.95rem !important;
}

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

/* -----------------------------------------------
   BUTTONS
----------------------------------------------- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent);
  color: #fff !important;
  padding: 0.75rem 1.8rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  border: none;
  cursor: pointer;
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
}
.btn-primary:hover {
  background: #0097a7;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0,188,212,0.35);
}

.btn-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--text) !important;
  padding: 0.75rem 1.8rem;
  border-radius: 8px;
  font-weight: 700;
  font-size: 0.95rem;
  border: 1.5px solid rgba(255,255,255,0.25);
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s, transform 0.2s;
}
.btn-outline:hover {
  border-color: var(--accent);
  color: var(--accent) !important;
  transform: translateY(-2px);
}

/* -----------------------------------------------
   SECTION SHARED
----------------------------------------------- */
main {
  padding-top: var(--nav-h);
  position: relative;
  z-index: 1;
}

section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 6rem 2rem;
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-tag {
  font-size: 0.9rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.6rem;
}

.section-header h2 {
  font-size: 2.2rem;
  color: var(--text);
}

.check-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1.2rem;
}
.check-list li {
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 1rem;
  color: #ccc;
}
.check-list i {
  color: var(--accent);
  font-size: 1rem;
  flex-shrink: 0;
}

/* -----------------------------------------------
   HERO
----------------------------------------------- */
#home {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 3rem;
  min-height: calc(100vh - var(--nav-h));
  padding-top: 4rem;
  padding-bottom: 4rem;
}

.hero-text {
  flex: 1 1 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.hero-greeting {
  font-size: 0.85rem;
  letter-spacing: 3px;
  color: var(--muted);
  text-transform: uppercase;
}

#home h1 {
  font-size: clamp(2.2rem, 5vw, 3.2rem);
  color: var(--text);
}
.hero-last { color: var(--accent); }

#home h2 {
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--muted);
  margin-top: -0.5rem;
}

.hero-bio {
  font-size: 1rem;
  color: #aaa;
  max-width: 480px;
  line-height: 1.8;
}

.hero-btns {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

.hero-socials {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.5rem;
}
.hero-socials a {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 1.1rem;
  transition: color 0.2s, border-color 0.2s, transform 0.2s;
}
.hero-socials a:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-3px);
}

.hero-photo-wrapper {
  flex: 0 0 auto;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 340px;
  height: 340px;
}

.hero-photo-glow {
  position: absolute;
  inset: -12px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0,188,212,0.22) 0%, transparent 70%);
  box-shadow: 0 0 80px 20px rgba(0,255,247,0.1);
  z-index: 0;
}

.profile-photo {
  width: 300px;
  height: 300px;
  border-radius: 50%;
  object-fit: cover;
  object-position: center 10%;
  position: relative;
  z-index: 1;
  border: 4px solid var(--accent);
  box-shadow: 0 8px 48px rgba(0,255,247,0.18);
  transition: transform 0.3s, box-shadow 0.3s;
}
.profile-photo:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 60px rgba(0,255,247,0.28);
}

/* -----------------------------------------------
   ABOUT
----------------------------------------------- */
#about {
  display: flex;
  align-items: center;
  gap: 4rem;
  background: var(--bg2);
  border-radius: 20px;
  padding: 5rem 4rem;
}

.about-img {
  flex: 0 0 auto;
  width: 340px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ═══════════════════════════════════════════════
   3D CUBE
═══════════════════════════════════════════════ */
#cube-3d-container {
  width: 220px;
  height: 220px;
  perspective: 600px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto;
}

.cube-3d {
  width: 160px;
  height: 160px;
  position: relative;
  transform-style: preserve-3d;
  animation: rotateCube 8s linear infinite;
}

@keyframes rotateCube {
  0%   { transform: rotateX(0deg)   rotateY(0deg); }
  100% { transform: rotateX(360deg) rotateY(360deg); }
}

.face {
  position: absolute;
  width: 160px;
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--accent-bright);
  border: 2px solid rgba(0, 255, 247, 0.55);
  background: rgba(0, 188, 212, 0.07);
  backdrop-filter: blur(4px);
  text-shadow: 0 0 12px rgba(0, 255, 247, 0.9);
  box-shadow: inset 0 0 30px rgba(0, 255, 247, 0.08),
              0 0 20px rgba(0, 255, 247, 0.15);
}

.face-front  { transform: translateZ(80px); }
.face-back   { transform: rotateY(180deg) translateZ(80px); }
.face-right  { transform: rotateY(90deg)  translateZ(80px); }
.face-left   { transform: rotateY(-90deg) translateZ(80px); }
.face-top    { transform: rotateX(90deg)  translateZ(80px); }
.face-bottom { transform: rotateX(-90deg) translateZ(80px); }

.about-text {
  flex: 1 1 0;
}
.about-text h2 {
  font-size: 2rem;
  margin: 0.5rem 0 1rem;
  color: var(--text);
}
.about-text > p {
  color: #aaa;
  line-height: 1.8;
  margin-bottom: 0.5rem;
}

/* -----------------------------------------------
   SKILLS
----------------------------------------------- */
#skills {
  max-width: 1200px;
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 1.2rem;
}

.skill-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.6rem 1rem 1.2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  transition: transform 0.2s, border-color 0.2s, box-shadow 0.2s;
  cursor: default;
}
.skill-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: 0 8px 28px rgba(0,188,212,0.15);
}
.skill-card img {
  width: 48px;
  height: 48px;
  object-fit: contain;
}
.skill-card span {
  font-size: 0.88rem;
  color: #ccc;
  text-align: center;
  font-weight: 500;
}

/* -----------------------------------------------
   PROJECTS
----------------------------------------------- */
#projects {
  background: var(--bg2);
  border-radius: 20px;
}

.projects-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.project-link { display: none; }

/* Project cards rendered by JS */
.project-card {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  align-items: center;
  border-top: 1px solid var(--border);
  padding: 3rem 0;
  transition: background 0.2s;
}
.project-card:last-child { border-bottom: 1px solid var(--border); }

.project-card:nth-child(even) { direction: rtl; }
.project-card:nth-child(even) > * { direction: ltr; }

.project-card-info {
  padding: 1rem 3rem 1rem 0;
}
.project-card:nth-child(even) .project-card-info {
  padding: 1rem 0 1rem 3rem;
}

.project-card-visual {
  background: var(--bg3);
  border-radius: 16px;
  border: 1px solid var(--border);
  height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
  transition: border-color 0.2s;
}
.project-card:hover .project-card-visual {
  border-color: rgba(0,188,212,0.4);
}
.project-card-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  border-radius: 14px;
  transition: transform 0.4s ease;
}
.project-card:hover .project-card-visual img {
  transform: scale(1.04);
}
.project-card-visual .proj-icon {
  font-size: 4rem;
  color: rgba(0,188,212,0.25);
}

.project-card-tag {
  font-size: 0.82rem;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.6rem;
}

.project-card-info h3 {
  font-size: 1.6rem;
  color: var(--text);
  margin-bottom: 0.8rem;
}

.project-desc {
  color: #aaa;
  font-size: 0.97rem;
  line-height: 1.7;
  margin-bottom: 1.2rem;
}

.project-card-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 1rem;
  transition: background 0.2s, color 0.2s, border-color 0.2s, transform 0.2s;
}
.project-card-link:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
  transform: scale(1.1);
}

.project-topics,
.project-languages {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin-bottom: 0.8rem;
}
.project-topics li,
.project-languages li {
  padding: 0.3rem 0.8rem;
  border-radius: 999px;
  font-size: 0.8rem;
}
.project-topics li { background: rgba(0,188,212,0.1); color: var(--accent); }
.project-languages li { background: var(--bg3); color: #ccc; border: 1px solid var(--border); }

.project-stats {
  font-size: 0.88rem;
  color: var(--muted);
  margin-bottom: 1rem;
}

.project-card--loading {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  color: var(--muted);
  font-size: 0.95rem;
}

/* -----------------------------------------------
   RESUME
----------------------------------------------- */
.resume-body {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.resume-body iframe {
  width: 100%;
  height: 560px;
  border: none;
  border-radius: 12px;
  background: var(--bg2);
  border: 1px solid var(--border);
}

/* -----------------------------------------------
   CONTACT
----------------------------------------------- */
#contact {
  display: flex;
  gap: 4rem;
  align-items: flex-start;
  background: var(--bg2);
  border-radius: 20px;
  padding: 5rem 4rem;
}

.contact-left {
  flex: 0 0 320px;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.contact-left h2 {
  font-size: 1.8rem;
  color: var(--text);
  line-height: 1.3;
}
.contact-sub {
  color: #aaa;
  font-size: 0.97rem;
  line-height: 1.7;
}
.contact-socials {
  display: flex;
  gap: 0.75rem;
  margin-top: 0.5rem;
}
.contact-socials a {
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--muted);
  font-size: 1.1rem;
  transition: color 0.2s, border-color 0.2s, transform 0.2s;
}
.contact-socials a:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-3px);
}

.contact-right { flex: 1 1 0; }

form#contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.2rem;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}
.form-group label {
  font-size: 0.92rem;
  color: var(--text);
  font-weight: 600;
}
.form-group input,
.form-group textarea {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.85rem 1rem;
  color: var(--text);
  font-size: 0.97rem;
  transition: border-color 0.2s;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--muted); }
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
}
.form-group textarea { resize: vertical; min-height: 130px; }
form#contact-form .btn-primary { align-self: flex-start; margin-top: 0.3rem; }

/* -----------------------------------------------
   FOOTER
----------------------------------------------- */
footer {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 2.5rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  border-top: 1px solid var(--border);
}
footer p { font-size: 0.9rem; color: var(--muted); }
.footer-name { font-style: italic; }
.footer-links {
  list-style: none;
  display: flex;
  gap: 1.5rem;
}
.footer-links a {
  font-size: 0.9rem;
  color: var(--muted);
  transition: color 0.2s;
}
.footer-links a:hover { color: var(--accent); }

.back-to-top {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent);
  border-radius: 10px;
  color: #fff;
  font-size: 1rem;
  transition: transform 0.2s, background 0.2s;
}
.back-to-top:hover { transform: translateY(-3px); background: #0097a7; }

/* -----------------------------------------------
   SCROLL REVEAL
----------------------------------------------- */
[data-animate] {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 1s cubic-bezier(0.22,1,0.36,1),
              transform 1s cubic-bezier(0.22,1,0.36,1);
}
[data-animate="fade-down"]  { transform: translateY(-28px); }
[data-animate="zoom"]       { transform: scale(0.85); }
[data-animate="fade-left"]  { transform: translateX(-40px); }
[data-animate="fade-right"] { transform: translateX(40px); }
[data-animate].visible {
  opacity: 1 !important;
  transform: none !important;
}
@media (prefers-reduced-motion: reduce) {
  [data-animate] { transition: opacity 0.3s ease !important; transform: none !important; }
}

/* -----------------------------------------------
   RESPONSIVE
----------------------------------------------- */
@media (max-width: 900px) {
  #home {
    flex-direction: column-reverse;
    text-align: center;
    min-height: auto;
    padding-top: 3rem;
  }
  .hero-text { align-items: center; }
  .hero-bio { max-width: unset; }
  .hero-photo-wrapper { width: 240px; height: 240px; }
  .profile-photo { width: 210px; height: 210px; }

  #about { flex-direction: column; padding: 3rem 2rem; gap: 2rem; }
  .about-img { flex: none; width: 100%; justify-content: center; }
  #cube-3d-container { width: 180px; height: 180px; }
  .cube-3d { width: 120px; height: 120px; }
  .face { width: 120px; height: 120px; font-size: 1rem; }
  .face-front  { transform: translateZ(60px); }
  .face-back   { transform: rotateY(180deg) translateZ(60px); }
  .face-right  { transform: rotateY(90deg)  translateZ(60px); }
  .face-left   { transform: rotateY(-90deg) translateZ(60px); }
  .face-top    { transform: rotateX(90deg)  translateZ(60px); }
  .face-bottom { transform: rotateX(-90deg) translateZ(60px); }

  #contact { flex-direction: column; padding: 3rem 2rem; gap: 2.5rem; }
  .contact-left { flex: none; width: 100%; }
  .form-row { grid-template-columns: 1fr; }

  .project-card { grid-template-columns: 1fr; direction: ltr !important; }
  .project-card:nth-child(even) > * { direction: ltr; }
  .project-card-info { padding: 0 0 1.5rem !important; order: 1; }
  .project-card-visual { order: 0; }
}

@media (max-width: 600px) {
  section { padding: 4rem 1.2rem; }
  .nav-links { display: none; }
  .nav-hire { display: none; }
  .nav-toggle { display: block; }
  .nav-links.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: rgba(13,13,13,0.97);
    padding: 1rem 2rem 1.5rem;
    border-bottom: 1px solid var(--border);
    gap: 0.5rem;
    z-index: 199;
  }
  .skills-grid { grid-template-columns: repeat(3, 1fr); }
  footer { flex-direction: column; align-items: center; text-align: center; }
  .footer-links { flex-wrap: wrap; justify-content: center; }
}