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

:root {
  --clr-bg: #0f0f13;
  --clr-bg-alt: #16161d;
  --clr-surface: #1e1e28;
  --clr-border: #2a2a38;
  --clr-accent: #7c6af7;
  --clr-accent-hover: #6a58e8;
  --clr-text: #e8e8f0;
  --clr-text-muted: #9090a8;
  --clr-white: #ffffff;
  --radius: 12px;
  --radius-sm: 6px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --transition: 0.25s ease;
  --font: 'Inter', system-ui, sans-serif;
  --nav-height: 64px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--clr-accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover { color: var(--clr-accent-hover); }

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

/* ===========================
   Utilities
=========================== */
.container {
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 96px 0;
}

.section-alt {
  background: var(--clr-bg-alt);
}

.section-title {
  font-size: clamp(1.8rem, 4vw, 2.4rem);
  font-weight: 700;
  text-align: center;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.section-subtitle {
  text-align: center;
  color: var(--clr-text-muted);
  margin-bottom: 56px;
  font-size: 1.05rem;
}

/* ===========================
   Buttons
=========================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  border: 2px solid transparent;
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--clr-accent);
  color: var(--clr-white);
  border-color: var(--clr-accent);
}

.btn-primary:hover {
  background: var(--clr-accent-hover);
  border-color: var(--clr-accent-hover);
  color: var(--clr-white);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(124, 106, 247, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--clr-text);
  border-color: var(--clr-border);
}

.btn-outline:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
  transform: translateY(-2px);
}

.btn-outline-light {
  background: transparent;
  color: var(--clr-white);
  border-color: rgba(255,255,255,0.5);
}

.btn-outline-light:hover {
  background: rgba(255,255,255,0.15);
  color: var(--clr-white);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

.btn-full { width: 100%; }

/* ===========================
   Tags
=========================== */
.tag {
  display: inline-block;
  padding: 6px 14px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: 100px;
  font-size: 0.85rem;
  color: var(--clr-text-muted);
  transition: all var(--transition);
}

.tag:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
}

.tag-sm {
  padding: 4px 10px;
  font-size: 0.78rem;
}

/* ===========================
   Navbar
=========================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  background: rgba(15, 15, 19, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}

.navbar.scrolled {
  border-bottom-color: var(--clr-border);
  background: rgba(15, 15, 19, 0.95);
}

.nav-container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--clr-white);
  letter-spacing: -0.3px;
}

.nav-logo:hover { color: var(--clr-accent); }

.nav-links {
  list-style: none;
  display: flex;
  gap: 36px;
}

.nav-links a {
  color: var(--clr-text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
}

.nav-links a:hover { color: var(--clr-white); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: all var(--transition);
  display: block;
}

/* ===========================
   Hero Section
=========================== */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: calc(var(--nav-height) + 48px) 24px 48px;
  position: relative;
  background: radial-gradient(ellipse 80% 60% at 50% 0%, rgba(124, 106, 247, 0.12) 0%, transparent 65%);
}

.hero-content {
  max-width: 1000px;
  width: 100%;
  display: flex;
  align-items: center;
  gap: 64px;
}

.hero-photo {
  flex-shrink: 0;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--clr-accent);
  box-shadow: 0 0 40px rgba(124, 106, 247, 0.25);
  position: relative;
}

.hero-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.photo-placeholder {
  display: none;
  width: 100%;
  height: 100%;
  background: var(--clr-surface);
  align-items: center;
  justify-content: center;
  color: var(--clr-text-muted);
  font-size: 0.85rem;
  position: absolute;
  inset: 0;
}

.hero-greeting {
  font-size: 1rem;
  color: var(--clr-accent);
  font-weight: 500;
  margin-bottom: 8px;
  letter-spacing: 0.5px;
}

.hero-name {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -1px;
  color: var(--clr-white);
  margin-bottom: 12px;
}

.hero-role {
  font-size: 1.15rem;
  color: var(--clr-text-muted);
  margin-bottom: 20px;
  font-weight: 400;
}

.hero-bio {
  font-size: 1rem;
  color: var(--clr-text-muted);
  max-width: 480px;
  margin-bottom: 32px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.hero-scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  color: var(--clr-text-muted);
  font-size: 0.78rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  animation: bounce 2s infinite;
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid var(--clr-text-muted);
  border-bottom: 2px solid var(--clr-text-muted);
  transform: rotate(45deg);
  margin-top: -4px;
}

@keyframes bounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* ===========================
   About Section
=========================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: start;
}

.about-text p {
  color: var(--clr-text-muted);
  line-height: 1.8;
  margin-bottom: 16px;
  font-size: 1.02rem;
}

.skills h3 {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--clr-white);
  margin-bottom: 20px;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ===========================
   Projects Section
=========================== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
}

.project-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--clr-accent);
}

.project-image {
  position: relative;
  height: 200px;
  background: var(--clr-bg-alt);
  overflow: hidden;
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition);
}

.project-card:hover .project-image img {
  transform: scale(1.04);
}

.project-image.no-image {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--clr-surface), var(--clr-bg-alt));
}

.project-image.no-image::after {
  content: "📂";
  font-size: 3rem;
  opacity: 0.3;
}

.project-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  opacity: 0;
  transition: opacity var(--transition);
}

.project-card:hover .project-overlay {
  opacity: 1;
}

.project-info {
  padding: 24px;
}

.project-title {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--clr-white);
  margin-bottom: 10px;
}

.project-desc {
  color: var(--clr-text-muted);
  font-size: 0.9rem;
  line-height: 1.65;
  margin-bottom: 16px;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ===========================
   Contact Section
=========================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 56px;
  align-items: start;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-icon {
  width: 44px;
  height: 44px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-item h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--clr-text-muted);
  margin-bottom: 4px;
  font-weight: 500;
}

.contact-item a,
.contact-item span {
  color: var(--clr-text);
  font-size: 0.95rem;
}

.contact-item a:hover { color: var(--clr-accent); }

/* Contact Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius);
  padding: 32px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.form-group input,
.form-group textarea {
  background: var(--clr-bg);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: var(--clr-text);
  font-family: var(--font);
  font-size: 0.95rem;
  transition: border-color var(--transition);
  outline: none;
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px rgba(124, 106, 247, 0.15);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--clr-text-muted);
  opacity: 0.6;
}

.form-note {
  font-size: 0.78rem;
  color: var(--clr-text-muted);
  text-align: center;
  line-height: 1.5;
}

/* ===========================
   Footer
=========================== */
.footer {
  background: var(--clr-bg-alt);
  border-top: 1px solid var(--clr-border);
  padding: 28px 0;
}

.footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.footer p {
  color: var(--clr-text-muted);
  font-size: 0.88rem;
}

.footer-links a {
  color: var(--clr-text-muted);
  font-size: 0.88rem;
  transition: color var(--transition);
}

.footer-links a:hover { color: var(--clr-white); }

/* ===========================
   Responsive
=========================== */
@media (max-width: 860px) {
  .hero-content {
    flex-direction: column;
    text-align: center;
    gap: 32px;
  }

  .hero-bio { margin: 0 auto 32px; }

  .hero-actions {
    justify-content: center;
  }

  .hero-scroll-hint {
    display: none;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 640px) {
  .section { padding: 64px 0; }

  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--clr-bg);
    border-bottom: 1px solid var(--clr-border);
    flex-direction: column;
    padding: 20px 24px;
    gap: 16px;
  }

  .nav-links.open { display: flex; }

  .nav-toggle { display: flex; }

  .hero-photo {
    width: 160px;
    height: 160px;
  }

  .projects-grid {
    grid-template-columns: 1fr;
  }

  .footer .container {
    flex-direction: column;
    text-align: center;
  }
}