/* ============================================================
   Portfolio – style.css
   ============================================================ */

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

:root {
  --bg: #0d0d0d;
  --bg-alt: #111317;
  --surface: #1a1d23;
  --border: #252830;
  --accent: #6c63ff;
  --accent-hover: #5a52e0;
  --text: #e2e8f0;
  --text-muted: #8892a4;
  --radius: 12px;
  --transition: 0.3s ease;
  --font: 'Inter', system-ui, sans-serif;
  --nav-h: 70px;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

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

.accent { color: var(--accent); }
.container { max-width: 1100px; margin: 0 auto; padding: 0 1.5rem; }

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

/* ---------- Navbar ---------- */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  z-index: 1000;
  background: rgba(13, 13, 13, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition);
}
#navbar.scrolled { border-color: var(--border); }

.nav-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  gap: 2.5rem;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition);
  position: relative;
  padding-bottom: 2px;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0;
  width: 0; height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  color: var(--text);
}
.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}
.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); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.7rem 1.75rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
}
.btn-primary {
  background: var(--accent);
  color: #fff;
}
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); }

.btn-outline {
  border-color: var(--accent);
  color: var(--accent);
  background: transparent;
}
.btn-outline:hover { background: var(--accent); color: #fff; transform: translateY(-2px); }

.btn-full { width: 100%; }

/* ---------- Sections ---------- */
.section { padding: 100px 0; }
.section-alt { background: var(--bg-alt); }

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 3rem;
  text-align: center;
  letter-spacing: -0.5px;
}

/* ---------- Hero ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--nav-h) 1.5rem 0;
  gap: 4rem;
  max-width: 1100px;
  margin: 0 auto;
  position: relative;
}

.hero-content {
  flex: 1;
  max-width: 560px;
}
.hero-greeting {
  color: var(--accent);
  font-size: 1.05rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
  opacity: 0;
  animation: fadeUp 0.6s ease 0.2s forwards;
}
.hero-name {
  font-size: clamp(3rem, 8vw, 5.5rem);
  font-weight: 800;
  letter-spacing: -2px;
  line-height: 1;
  margin-bottom: 0.6rem;
  opacity: 0;
  animation: fadeUp 0.6s ease 0.35s forwards;
}
.hero-title {
  font-size: clamp(1.2rem, 3vw, 1.8rem);
  color: var(--text-muted);
  font-weight: 400;
  margin-bottom: 1.2rem;
  opacity: 0;
  animation: fadeUp 0.6s ease 0.5s forwards;
}
.hero-desc {
  color: var(--text-muted);
  max-width: 480px;
  margin-bottom: 2rem;
  opacity: 0;
  animation: fadeUp 0.6s ease 0.65s forwards;
}
.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.6s ease 0.8s forwards;
}

.hero-visual {
  flex-shrink: 0;
  opacity: 0;
  animation: fadeIn 1s ease 0.5s forwards;
}
.avatar-ring {
  width: 260px;
  height: 260px;
  border-radius: 50%;
  padding: 5px;
  background: conic-gradient(var(--accent), #a855f7, var(--accent));
  animation: spin 8s linear infinite;
}
.avatar {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  background: var(--surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  font-weight: 800;
  color: var(--accent);
  animation: spin-reverse 8s linear infinite;
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  opacity: 0;
  animation: fadeIn 1s ease 1.5s forwards;
}
.mouse {
  width: 22px;
  height: 36px;
  border: 2px solid var(--text-muted);
  border-radius: 12px;
  display: flex;
  justify-content: center;
  padding-top: 6px;
}
.wheel {
  width: 3px;
  height: 7px;
  background: var(--accent);
  border-radius: 2px;
  animation: scroll-wheel 1.5s ease-in-out infinite;
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.about-text p {
  color: var(--text-muted);
  margin-bottom: 1rem;
}
.about-info {
  margin-top: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.info-item {
  display: flex;
  gap: 1rem;
}
.info-label {
  font-weight: 600;
  color: var(--text);
  min-width: 80px;
}
.available {
  color: #22c55e;
  font-weight: 500;
}
.available::before { content: '● '; font-size: 0.6rem; vertical-align: middle; }

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}
.stat-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: border-color var(--transition), transform var(--transition);
}
.stat-card:hover { border-color: var(--accent); transform: translateY(-4px); }
.stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}
.stat-label {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 0.4rem;
}

/* ---------- Skills ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}
.skill-category {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: border-color var(--transition);
}
.skill-category:hover { border-color: var(--accent); }
.category-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 1px;
}
.skill-list { display: flex; flex-direction: column; gap: 1rem; }
.skill-name {
  display: block;
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: 0.4rem;
}
.skill-bar {
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  overflow: hidden;
}
.skill-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #a855f7);
  border-radius: 3px;
  width: 0;
  transition: width 1.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Projects ---------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
}
.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
}
.project-card:hover { border-color: var(--accent); transform: translateY(-6px); }

.project-img {
  height: 180px;
  background-size: cover;
  background-position: center;
}
.project-img-1 { background: linear-gradient(135deg, #667eea, #764ba2); }
.project-img-2 { background: linear-gradient(135deg, #f093fb, #f5576c); }
.project-img-3 { background: linear-gradient(135deg, #4facfe, #00f2fe); }
.project-img-4 { background: linear-gradient(135deg, #43e97b, #38f9d7); }

.project-body { padding: 1.5rem; }
.project-tags { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-bottom: 0.75rem; }
.tag {
  font-size: 0.75rem;
  font-weight: 600;
  background: rgba(108, 99, 255, 0.15);
  color: var(--accent);
  padding: 0.25rem 0.65rem;
  border-radius: 20px;
  border: 1px solid rgba(108, 99, 255, 0.3);
}
.project-title {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
}
.project-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 1rem;
}
.project-links { display: flex; gap: 1rem; }
.project-link {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  transition: color var(--transition);
}
.project-link:hover { color: #a855f7; }

/* ---------- Contact ---------- */
.contact-intro {
  text-align: center;
  color: var(--text-muted);
  max-width: 560px;
  margin: -1.5rem auto 3rem;
}
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 4rem;
  align-items: start;
}
.contact-info { display: flex; flex-direction: column; gap: 1.5rem; }
.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  transition: border-color var(--transition);
}
.contact-item:hover { border-color: var(--accent); }
.contact-icon {
  font-size: 1.4rem;
  min-width: 36px;
  text-align: center;
}
.contact-item h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--accent);
  margin-bottom: 0.2rem;
}
.contact-item a {
  color: var(--text-muted);
  font-size: 0.9rem;
  transition: color var(--transition);
}
.contact-item a:hover { color: var(--text); }

/* Contact Form */
.contact-form { display: flex; flex-direction: column; gap: 1.25rem; }
.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}
.form-group input,
.form-group textarea {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.8rem 1rem;
  color: var(--text);
  font-family: var(--font);
  font-size: 0.9rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  resize: none;
}
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.15);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
  opacity: 0.6;
}
.form-status {
  text-align: center;
  font-size: 0.9rem;
  min-height: 1.2rem;
}
.form-status.success { color: #22c55e; }
.form-status.error { color: #f87171; }

/* ---------- Footer ---------- */
.footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ---------- Keyframes ---------- */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
@keyframes spin-reverse {
  to { transform: rotate(-360deg); }
}
@keyframes scroll-wheel {
  0%, 100% { transform: translateY(0); opacity: 1; }
  50%       { transform: translateY(8px); opacity: 0.4; }
}

/* ---------- Reveal animation ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero { flex-direction: column; text-align: center; gap: 3rem; padding-top: calc(var(--nav-h) + 2rem); }
  .hero-desc { margin: 0 auto 2rem; }
  .hero-buttons { justify-content: center; }
  .scroll-indicator { display: none; }
  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .skills-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; gap: 2rem; }
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: rgba(13, 13, 13, 0.97);
    flex-direction: column;
    align-items: center;
    padding: 1.5rem 0;
    gap: 1.5rem;
    border-bottom: 1px solid var(--border);
  }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }
  .avatar-ring { width: 180px; height: 180px; }
  .avatar { font-size: 3.5rem; }
  .about-stats { grid-template-columns: 1fr 1fr; }
}