/* ============================================================
   PORTFOLIO CSS — Dark Tech Theme
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Share+Tech+Mono&family=Rajdhani:wght@400;500;600;700&family=Inter:wght@300;400;500&display=swap');

/* ── CSS Variables ── */
:root {
  --bg:        #0a0c10;
  --bg-card:   #0f1318;
  --bg-raised: #141920;
  --border:    #1e2d3d;
  --accent:    #00e5ff;
  --accent2:   #7b2fff;
  --green:     #39ff14;
  --text:      #cdd9e5;
  --text-dim:  #637489;
  --font-mono: 'Share Tech Mono', monospace;
  --font-head: 'Rajdhani', sans-serif;
  --font-body: 'Inter', sans-serif;
  --radius:    6px;
  --glow:      0 0 16px rgba(0, 229, 255, 0.25);
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  overflow-x: hidden;
}

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

/* ── Grid noise overlay ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,229,255,0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,229,255,0.02) 1px, transparent 1px);
  background-size: 40px 40px;
  pointer-events: none;
  z-index: 0;
}

/* ── Navigation ── */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(10,12,16,0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.nav-logo {
  font-family: var(--font-mono);
  font-size: 1rem;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: 2px;
}
.nav-logo span { color: var(--text-dim); }
.nav-links {
  list-style: none;
  display: flex;
  gap: 2rem;
}
.nav-links a {
  color: var(--text-dim);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  transition: color 0.2s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform 0.2s;
}
.nav-links a:hover { color: var(--accent); }
.nav-links a:hover::after { transform: scaleX(1); }

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 4px;
}
.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: all 0.3s;
}

/* ── Hero / Landing ── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 80px 2rem 2rem;
  overflow: hidden;
}
.hero-content {
  max-width: 800px;
  text-align: center;
  position: relative;
  z-index: 1;
}
.hero-badge {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 4px 12px;
  border-radius: 2px;
  margin-bottom: 1.5rem;
  letter-spacing: 2px;
  animation: fadeInDown 0.6s ease both;
}
.hero h1 {
  font-family: var(--font-head);
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.7s ease 0.1s both;
}
.hero h1 .highlight {
  color: var(--accent);
  position: relative;
}
.hero-tagline {
  font-size: 1.1rem;
  color: var(--text-dim);
  max-width: 550px;
  margin: 0 auto 2.5rem;
  animation: fadeInUp 0.7s ease 0.2s both;
}
.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 0.7s ease 0.3s both;
}

/* LED blinking animation */
.led-row {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-bottom: 2rem;
  animation: fadeInDown 0.6s ease 0.4s both;
}
.led {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  animation: blink 1.4s infinite;
}
.led.green  { background: var(--green); box-shadow: 0 0 8px var(--green); animation-delay: 0s; }
.led.cyan   { background: var(--accent); box-shadow: 0 0 8px var(--accent); animation-delay: 0.3s; }
.led.purple { background: var(--accent2); box-shadow: 0 0 8px var(--accent2); animation-delay: 0.6s; }
.led.red    { background: #ff2d55; box-shadow: 0 0 8px #ff2d55; animation-delay: 0.9s; }

/* ── Buttons ── */
.btn {
  display: inline-block;
  padding: 0.7rem 1.8rem;
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  letter-spacing: 1px;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  transition: all 0.25s;
}
.btn-primary {
  background: var(--accent);
  color: var(--bg);
  border: none;
  font-weight: 700;
}
.btn-primary:hover {
  background: #fff;
  box-shadow: var(--glow);
  transform: translateY(-2px);
}
.btn-outline {
  background: transparent;
  color: var(--accent);
  border: 1px solid var(--accent);
}
.btn-outline:hover {
  background: rgba(0,229,255,0.08);
  box-shadow: var(--glow);
  transform: translateY(-2px);
}

/* ── Section Wrapper ── */
section {
  position: relative;
  z-index: 1;
  padding: 6rem 2rem;
}
.container {
  max-width: 1100px;
  margin: 0 auto;
}
.section-header {
  margin-bottom: 3rem;
}
.section-label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 3px;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.section-title {
  font-family: var(--font-head);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  color: #fff;
}

/* ── Project Gallery ── */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}
.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform 0.3s, border-color 0.3s, box-shadow 0.3s;
  position: relative;
}
.project-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent);
  box-shadow: var(--glow);
}
.card-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
  background: var(--bg-raised);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  font-family: var(--font-mono);
  font-size: 0.8rem;
}
.card-image img { width: 100%; height: 100%; object-fit: cover; }
.card-body { padding: 1.25rem; }
.card-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent2);
  letter-spacing: 2px;
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.card-title {
  font-family: var(--font-head);
  font-size: 1.25rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.5rem;
}
.card-desc {
  font-size: 0.875rem;
  color: var(--text-dim);
  margin-bottom: 1rem;
}
.progress-label {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-dim);
  margin-bottom: 6px;
}
.progress-bar-bg {
  width: 100%;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}
.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent2), var(--accent));
  border-radius: 2px;
  width: 0;
  transition: width 1.2s cubic-bezier(0.22, 1, 0.36, 1);
}
.card-footer { padding: 1rem 1.25rem; border-top: 1px solid var(--border); }
.card-footer a { font-family: var(--font-mono); font-size: 0.8rem; color: var(--accent); text-decoration: none; }
.card-footer a:hover { text-decoration: underline; }

/* ── FAQ ── */
.faq-list { display: flex; flex-direction: column; gap: 0.75rem; }
.faq-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
.faq-question {
  width: 100%;
  background: none;
  border: none;
  padding: 1.1rem 1.5rem;
  color: var(--text);
  font-family: var(--font-head);
  font-size: 1rem;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: color 0.2s;
}
.faq-question:hover { color: var(--accent); }
.faq-icon {
  font-size: 1.2rem;
  color: var(--accent);
  transition: transform 0.3s;
  flex-shrink: 0;
}
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease, padding 0.3s;
  padding: 0 1.5rem;
  color: var(--text-dim);
  font-size: 0.9rem;
}
.faq-item.open .faq-answer {
  max-height: 300px;
  padding: 0 1.5rem 1.2rem;
}

/* ── Contact ── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}
.contact-info h3 {
  font-family: var(--font-head);
  font-size: 1.5rem;
  color: #fff;
  margin-bottom: 1rem;
}
.contact-info p { color: var(--text-dim); font-size: 0.9rem; }
.form-group { margin-bottom: 1.25rem; }
.form-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  background: var(--bg-raised);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.75rem 1rem;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.9rem;
  transition: border-color 0.2s, box-shadow 0.2s;
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(0,229,255,0.1);
}
.form-group textarea { resize: vertical; min-height: 120px; }
.form-group select option { background: var(--bg-raised); }
.form-error {
  display: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #ff2d55;
  margin-top: 4px;
}
.form-group.invalid .form-error { display: block; }
.form-group.invalid input,
.form-group.invalid textarea,
.form-group.invalid select { border-color: #ff2d55; }

/* ── Footer ── */
footer {
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-dim);
  position: relative;
  z-index: 1;
}
footer a { color: var(--accent); text-decoration: none; }

/* ── Keyframes ── */
@keyframes fadeInUp   { from { opacity:0; transform:translateY(24px); } to { opacity:1; transform:none; } }
@keyframes fadeInDown { from { opacity:0; transform:translateY(-24px); } to { opacity:1; transform:none; } }
@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.15; }
}
@keyframes scanline {
  0%   { transform: translateY(-100%); }
  100% { transform: translateY(100vh); }
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: 60px; left: 0; right: 0; background: var(--bg-card); border-bottom: 1px solid var(--border); padding: 1rem 2rem; gap: 1rem; }
  .nav-links.open { display: flex; }
  .hamburger { display: flex; }
  .contact-grid { grid-template-columns: 1fr; }
  .hero h1 { font-size: 2.2rem; }
  section { padding: 4rem 1.25rem; }
}
@media (max-width: 480px) {
  .gallery-grid { grid-template-columns: 1fr; }
}