/* ============================================
   INDEX PAGE STYLES
   ============================================ */

/* ---- Hero ---- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 0 2rem;
  text-align: center;
}

.hero-bg { position: absolute; inset: 0; z-index: 0; }
.hero-bg-mesh {
  position: absolute; inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 20% 50%, rgba(139,92,246,0.22) 0%, transparent 60%),
    radial-gradient(ellipse 60% 50% at 80% 40%, rgba(6,182,212,0.18) 0%, transparent 55%),
    radial-gradient(ellipse 40% 40% at 50% 80%, rgba(139,92,246,0.12) 0%, transparent 60%);
}
.hero-grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 50%, black 0%, transparent 100%);
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 50% 50%, black 0%, transparent 100%);
}

/* Floating orbs */
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}
.hero-orb-1 {
  width: 350px; height: 350px;
  background: rgba(139,92,246,0.18);
  top: 15%; left: 5%;
  animation: float 7s ease-in-out infinite;
}
.hero-orb-2 {
  width: 280px; height: 280px;
  background: rgba(6,182,212,0.15);
  bottom: 20%; right: 8%;
  animation: float 9s ease-in-out infinite reverse;
}

.hero-content {
  position: relative; z-index: 2; max-width: 950px;
}

/* Role label */
.hero-role {
  display: inline-block;
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 1.25rem;
  animation: fadeUp 0.8s ease 0.15s both;
}

/* Name — single row, no line break needed via CSS white-space */
.hero-title {
  font-size: clamp(2.4rem, 6vw, 5.5rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.05;
  white-space: nowrap;
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 1.25rem;
  animation: fadeUp 0.8s ease 0.3s both;
}

.hero-subtitle {
  font-size: clamp(1rem, 2.2vw, 1.2rem);
  color: var(--text-secondary);
  font-weight: 400;
  max-width: 560px;
  margin: 0 auto 2.5rem;
  line-height: 1.75;
  animation: fadeUp 0.8s ease 0.45s both;
}

.hero-cta {
  display: flex; align-items: center; justify-content: center;
  gap: 1rem; flex-wrap: wrap;
  animation: fadeUp 0.8s ease 0.6s both;
}

/* Stats */
.hero-stats {
  display: flex; justify-content: center; gap: 3rem;
  margin-top: 4rem; padding-top: 3rem;
  border-top: 1px solid var(--border);
  animation: fadeUp 0.8s ease 0.75s both;
}
.stat-item { text-align: center; }
.stat-number {
  font-size: 2.2rem; font-weight: 800;
  background: var(--accent-gradient);
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
  line-height: 1;
}
.stat-suffix { display: inline; }
.stat-label {
  font-size: 0.78rem; font-weight: 500;
  color: var(--text-muted); text-transform: uppercase;
  letter-spacing: 0.08em; margin-top: 0.3rem;
}

/* Scroll indicator — mouse shape */
.scroll-indicator {
  position: absolute; bottom: 2.5rem; left: 50%;
  transform: translateX(-50%); z-index: 2;
  animation: scrollBounce 2s ease-in-out infinite;
}
.scroll-mouse {
  display: block; width: 24px; height: 38px;
  border: 2px solid rgba(255,255,255,0.25);
  border-radius: 12px; position: relative;
}
.scroll-wheel {
  display: block; width: 4px; height: 7px;
  background: var(--accent-cyan);
  border-radius: 2px; margin: 5px auto 0;
  animation: scrollWheel 1.8s ease-in-out infinite;
}
@keyframes scrollBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50%       { transform: translateX(-50%) translateY(8px); }
}
@keyframes scrollWheel {
  0%   { opacity: 1; transform: translateY(0); }
  100% { opacity: 0; transform: translateY(14px); }
}

/* ---- About Preview ---- */
.about-preview {
  padding: 6rem 2rem;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.about-preview .container {
  max-width: 1200px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr; gap: 5rem; align-items: center;
}

.section-eyebrow {
  display: inline-block; font-size: 0.78rem; font-weight: 700;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent-cyan); margin-bottom: 0.85rem;
}

.about-text h2 {
  font-size: clamp(2rem, 4vw, 3rem); font-weight: 800;
  letter-spacing: -0.02em; margin-bottom: 1.5rem; line-height: 1.1;
}
.about-text p {
  color: var(--text-secondary); font-size: 1.05rem;
  line-height: 1.8; margin-bottom: 1rem;
}

.skills-pills { display: flex; flex-wrap: wrap; gap: 0.5rem; margin-top: 1.5rem; }

.about-visual { position: relative; }
.about-avatar {
  width: 100%; aspect-ratio: 1; max-width: 380px; margin: 0 auto;
  border-radius: var(--radius-lg);
  background: var(--bg-card); border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  position: relative; overflow: hidden;
  animation: pulseGlow 4s ease-in-out infinite;
}
.about-avatar::before {
  content: ''; position: absolute; inset: 0;
  background: var(--accent-gradient-subtle);
}
.about-avatar i { font-size: 6rem; color: var(--accent-purple); opacity: 0.4; position: relative; z-index: 1; animation: float 6s ease-in-out infinite; }
.about-avatar-glow {
  position: absolute; inset: -2px; border-radius: inherit;
  background: var(--accent-gradient); z-index: -1; opacity: 0.25; filter: blur(10px);
}

/* ---- Featured Projects ---- */
.featured-projects { padding: 6rem 2rem; }
.featured-projects .container { max-width: 1200px; margin: 0 auto; }

.section-header {
  display: flex; align-items: flex-end; justify-content: space-between;
  margin-bottom: 2.5rem; flex-wrap: wrap; gap: 1rem;
}
.section-header h2 { font-size: clamp(1.8rem, 3.5vw, 2.5rem); font-weight: 800; letter-spacing: -0.02em; }

/* Project cards */
.project-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); overflow: hidden;
  display: flex; flex-direction: column;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-accent);
  box-shadow: 0 12px 40px rgba(139,92,246,0.25);
}

.project-thumb {
  height: 200px;
  position: relative;
  overflow: hidden;
}
/* The gradient background is set inline on each card — it shows when no image */
.project-thumb img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center;
  transition: transform 0.5s ease;
  z-index: 1;
}
/* Dark gradient overlay so the number stays readable over the image */
.project-thumb::after {
  content: '';
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.55) 0%, rgba(0,0,0,0.1) 60%, transparent 100%);
  z-index: 2;
  pointer-events: none;
}
.project-card:hover .project-thumb img { transform: scale(1.06); }
.project-num {
  font-size: 4.5rem; font-weight: 800;
  color: rgba(255,255,255,0.18);
  position: absolute; bottom: -0.5rem; right: 0.75rem;
  line-height: 1; pointer-events: none; z-index: 3;
  text-shadow: 0 2px 8px rgba(0,0,0,0.4);
}

.project-card-body {
  padding: 1.5rem; flex: 1; display: flex; flex-direction: column;
}
.project-card-body h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 0.6rem; }
.project-card-body p { color: var(--text-secondary); font-size: 0.9rem; line-height: 1.6; flex: 1; margin-bottom: 1rem; }
.project-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-bottom: 1.25rem; }
.project-links { display: flex; gap: 0.75rem; margin-top: auto; }
.project-link {
  display: inline-flex; align-items: center; gap: 0.4rem;
  padding: 0.45rem 1rem; border-radius: 6px;
  font-size: 0.82rem; font-weight: 600;
  transition: all var(--transition);
}
.project-link.github { background: rgba(255,255,255,0.05); border: 1px solid var(--border); color: var(--text-secondary); }
.project-link.github:hover { background: rgba(255,255,255,0.1); color: var(--text-primary); }
.project-link.live { background: var(--accent-gradient); color: white; }
.project-link.live:hover { opacity: 0.85; }

/* ---- Contact ---- */
.contact-section {
  padding: 6rem 2rem; background: var(--bg-secondary); border-top: 1px solid var(--border);
}
.contact-section .container {
  max-width: 1200px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1.4fr; gap: 5rem; align-items: start;
}
.contact-info h2 { font-size: clamp(1.8rem, 3.5vw, 2.5rem); font-weight: 800; letter-spacing: -0.02em; margin-bottom: 1rem; }
.contact-info p { color: var(--text-secondary); font-size: 1.05rem; line-height: 1.8; margin-bottom: 2rem; }
.contact-detail { display: flex; align-items: center; gap: 0.75rem; color: var(--text-secondary); font-size: 0.95rem; margin-bottom: 0.75rem; }
.contact-detail i { color: var(--accent-cyan); width: 20px; }
.contact-detail a { color: var(--accent-cyan); transition: opacity var(--transition); }
.contact-detail a:hover { opacity: 0.8; }

.contact-form-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 2.5rem;
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-group { display: flex; flex-direction: column; gap: 0.5rem; margin-bottom: 1.25rem; }
.form-group label { font-size: 0.85rem; font-weight: 600; color: var(--text-secondary); }
.form-group label .req { color: var(--accent-purple); }
.form-group input,
.form-group textarea,
.form-group select {
  background: var(--bg-secondary); border: 1px solid var(--border);
  border-radius: 8px; padding: 0.75rem 1rem;
  color: var(--text-primary); font-family: var(--font-body);
  font-size: 0.95rem; outline: none; -webkit-appearance: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus { border-color: var(--accent-purple); box-shadow: 0 0 0 3px rgba(139,92,246,0.15); }
.form-group input::placeholder, .form-group textarea::placeholder { color: var(--text-muted); }
.form-group textarea { resize: vertical; min-height: 130px; }
.form-group select option { background: var(--bg-card); }
.form-error { font-size: 0.8rem; color: #ef4444; display: none; }
.form-group.has-error input,
.form-group.has-error textarea,
.form-group.has-error select { border-color: #ef4444; }
.form-group.has-error .form-error { display: block; }

.btn-submit {
  width: 100%; padding: 0.9rem; background: var(--accent-gradient);
  color: white; font-family: var(--font-body); font-weight: 700;
  font-size: 0.95rem; letter-spacing: 0.04em; text-transform: uppercase;
  border: none; border-radius: 8px; cursor: pointer;
  transition: opacity var(--transition), transform var(--transition), box-shadow var(--transition);
}
.btn-submit:hover { opacity: 0.9; transform: translateY(-1px); box-shadow: 0 8px 30px rgba(139,92,246,0.35); }
.btn-submit:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .about-preview .container { grid-template-columns: 1fr; gap: 3rem; }
  .contact-section .container { grid-template-columns: 1fr; gap: 3rem; }
  .about-visual { display: none; }
}
@media (max-width: 768px) {
  /* Fix: hero was using align-items:center + overflow:hidden which caused the
     content to be vertically centered then clipped by the fixed navbar on
     short/landscape screens. Switch to flex-start with explicit top padding
     so content always clears the navbar, and move overflow:hidden to the
     background layer so the decorative grid/mesh still gets clipped. */
  .hero {
    align-items: flex-start;
    padding-top: calc(var(--nav-height) + 2.5rem);
    padding-bottom: 5rem; /* room for scroll indicator */
    overflow: visible;
  }
  .hero-bg { overflow: hidden; } /* keep bg clipped to hero bounds */
  .hero-title { font-size: clamp(1.8rem, 7vw, 3.2rem); white-space: normal; }
  /* Fix: 4 stat items in one row overflow on narrow screens — wrap to 2×2 */
  .hero-stats { gap: 1.5rem 2rem; flex-wrap: wrap; justify-content: center; }
  .stat-item { flex: 1 1 calc(50% - 1rem); }
  .form-row { grid-template-columns: 1fr; }
  .section-header { flex-direction: column; align-items: flex-start; }
  .hero-orb { display: none; }
}
@media (max-width: 480px) {
  /* Reduce contact form card internal padding on very small screens */
  .contact-form-card { padding: 1.5rem 1rem; }
}

/* ============================================
   SPECIALIZATIONS PREVIEW SECTION (homepage)
   ============================================ */
.specs-preview {
  padding: 6rem 2rem;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.specs-preview .container { max-width: 1200px; margin: 0 auto; }

.specs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);   /* 3 per row, matches certifications page */
  gap: 1.5rem;
  margin-top: 0;
}

.spec-preview-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);            /* matches cert-card radius */
  overflow: hidden;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.spec-preview-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--accent-gradient);
  z-index: 1;
}
.spec-preview-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-accent);
  box-shadow: 0 12px 40px rgba(139,92,246,0.25);
}

/* Certificate image: white bg, slightly taller than cert-card (155px) → 172px */
.spec-preview-thumb {
  width: 100%;
  height: 172px;
  background: #ffffff;
  overflow: hidden;
  flex-shrink: 0;
  position: relative;
}
.spec-preview-thumb img {
  width: 100%;
  height: auto;
  object-fit: cover;
  object-position: top center;
  display: block;
  transition: transform 0.5s ease;
}
.spec-preview-card:hover .spec-preview-thumb img {
  transform: scale(1.04);
}
.spec-preview-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  width: 100%; height: 100%;
  background: linear-gradient(135deg, #1a1040 0%, #0d1a30 100%);
  position: absolute;
  inset: 0;
}
.spec-preview-placeholder i { font-size: 3rem; color: var(--accent-purple); opacity: 0.5; }
.spec-preview-placeholder span { font-size: 0.8rem; color: var(--text-secondary); text-transform: uppercase; letter-spacing: 0.1em; }

.spec-preview-body {
  padding: 1.25rem;              /* tighter padding for compact 3-col layout */
  flex: 1;
  display: flex;
  flex-direction: column;
}
.spec-preview-label {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent-cyan);
  margin-bottom: 0.5rem;
  display: block;
}
.spec-preview-body h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.6rem;
  line-height: 1.3;
}
.spec-preview-body p {
  color: var(--text-secondary);
  font-size: 0.88rem;
  line-height: 1.65;
  flex: 1;
  margin-bottom: 1.25rem;
}
.spec-preview-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.45rem 1rem;
  background: transparent;
  border: 1px solid var(--border-accent);
  border-radius: 7px;
  color: var(--accent-purple);
  font-size: 0.82rem;
  font-weight: 600;
  align-self: flex-start;
  transition: all var(--transition);
}
.spec-preview-btn:hover {
  background: var(--accent-gradient);
  border-color: transparent;
  color: white;
  transform: translateY(-2px);
}

@media (max-width: 1024px) {
  .specs-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .specs-grid { grid-template-columns: 1fr; }
}