/* ── GOOGLE FONTS ───────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@400;600;800&family=Poppins:wght@300;400;500;600&display=swap');

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

:root {
  --accent:        #2563EB;
  --accent-light:  #60a5fa;
  --accent-glow:   rgba(37, 99, 235, 0.25);
  --accent-soft:   rgba(37, 99, 235, 0.12);
  --accent-border: rgba(37, 99, 235, 0.22);
  --accent-strong: rgba(37, 99, 235, 0.42);
  --bg:            #0D1117;
  --surface:       #1F2937;
  --surface2:      #161b22;
  --border:        rgba(255, 255, 255, 0.06);
  --muted:         #94A3B8;
  --text:          #F8FAFC;
  --tag-bg:        rgba(37, 99, 235, 0.10);
  --tag-border:    rgba(37, 99, 235, 0.28);
  --tag-text:      #93c5fd;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: 'Poppins', sans-serif;
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5 {
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  line-height: 1.1;
}

a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }

/* ── NAVBAR ─────────────────────────────────────────────── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 16px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(13, 17, 23, 0.78);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s;
}

.navbar.scrolled { border-bottom-color: var(--accent-border); }

.nav-logo {
  height: 48px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
}
.nav-links a {
  font-size: 1rem;
  font-weight: 400;
  color: var(--muted);
  transition: color 0.2s;
}
.nav-links a:hover { color: var(--text); }

.btn-nav {
  background: var(--accent);
  color: #fff;
  font-family: 'Poppins', sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 8px 20px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  display: inline-block;
  box-shadow: 0 0 18px var(--accent-glow);
  transition: background 0.2s, box-shadow 0.2s, transform 0.15s;
}
.btn-nav:hover {
  background: #1d4ed8;
  box-shadow: 0 0 28px rgba(37, 99, 235, 0.45);
  transform: translateY(-1px);
}

/* ── HERO ───────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  padding: 80px 20px;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(37,99,235,0.18) 0%, transparent 70%),
    radial-gradient(ellipse 40% 40% at 15% 85%, rgba(37,99,235,0.07) 0%, transparent 60%);
  pointer-events: none;
}

.orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(60px);
  pointer-events: none;
}
.orb-1 {
  width: 380px; height: 380px;
  background: rgba(37, 99, 235, 0.20);
  top: -100px; left: -80px;
  animation: orbFloat1 10s ease-in-out infinite;
}
.orb-2 {
  width: 260px; height: 260px;
  background: rgba(99, 102, 241, 0.16);
  bottom: -50px; right: -50px;
  animation: orbFloat2 13s ease-in-out infinite;
}
.orb-3 {
  width: 180px; height: 180px;
  background: rgba(37, 99, 235, 0.12);
  top: 42%; right: 8%;
  animation: orbFloat3 8s ease-in-out infinite;
}

@keyframes orbFloat1 {
  0%,100% { transform: translate(0,0) scale(1); }
  50%      { transform: translate(28px,-18px) scale(1.04); }
}
@keyframes orbFloat2 {
  0%,100% { transform: translate(0,0) scale(1); }
  50%      { transform: translate(-18px,14px) scale(0.96); }
}
@keyframes orbFloat3 {
  0%,100% { transform: translate(0,0); }
  50%      { transform: translate(10px,-22px); }
}

.hero-inner {
  position: relative;
  z-index: 2;
  max-width: 700px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-block;
  background: var(--accent-soft);
  border: 1px solid var(--accent-strong);
  border-radius: 24px;
  padding: 5px 18px;
  font-size: 0.78rem;
  color: var(--tag-text);
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.1rem);
  letter-spacing: -1.5px;
  margin-bottom: 20px;
}

.hero-title .gradient {
  background: linear-gradient(135deg, var(--accent-light) 0%, var(--accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1rem;
  color: var(--muted);
  max-width: 500px;
  margin: 0 auto 32px;
  font-weight: 400;
}

.hero-btns {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ── BUTTONS ────────────────────────────────────────────── */
.btn-accent {
  background: var(--accent);
  color: #fff;
  font-family: 'Poppins', sans-serif;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 13px 30px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  display: inline-block;
  box-shadow: 0 4px 24px var(--accent-glow);
  transition: background 0.2s, box-shadow 0.2s, transform 0.15s;
}
.btn-accent:hover {
  background: #1d4ed8;
  box-shadow: 0 6px 32px rgba(37, 99, 235, 0.5);
  transform: translateY(-2px);
}

.btn-ghost {
  background: rgba(31, 41, 55, 0.7);
  color: var(--muted);
  font-family: 'Poppins', sans-serif;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 13px 30px;
  border-radius: 10px;
  border: 1px solid var(--accent-border);
  cursor: pointer;
  display: inline-block;
  transition: border-color 0.2s, color 0.2s, transform 0.15s;
}
.btn-ghost:hover {
  border-color: var(--accent-strong);
  color: var(--text);
  transform: translateY(-2px);
}

/* ── SECTIONS ───────────────────────────────────────────── */
section { padding: 96px 20px; }

.container {
  max-width: 1060px;
  margin: 0 auto;
}

.section-eyebrow {
  font-family: 'Poppins', sans-serif;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--accent);
  margin-bottom: 8px;
}

.section-title {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  letter-spacing: -0.5px;
  margin-bottom: 48px;
}

/* ── PROJECT CARDS ──────────────────────────────────────── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 22px;
}

.project-card {
  position: relative;
  background: rgba(31, 41, 55, 0.5);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--accent-border);
  border-radius: 18px;
  padding: 30px 26px 24px;
  overflow: hidden;
  transition: border-color 0.3s, box-shadow 0.3s, transform 0.25s;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.5;
  transition: opacity 0.3s;
}

.project-card:hover {
  border-color: var(--accent-strong);
  box-shadow: 0 8px 48px var(--accent-glow);
  transform: translateY(-5px);
}
.project-card:hover::before { opacity: 1; }

.card-icon {
  width: 46px; height: 46px;
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 18px;
  transition: background 0.3s, box-shadow 0.3s;
}
.project-card:hover .card-icon {
  background: rgba(37, 99, 235, 0.2);
  box-shadow: 0 0 20px rgba(37, 99, 235, 0.3);
}

.card-link {
  position: absolute;
  inset: 0;
  z-index: 1;
  border-radius: 18px;
  font-size: 0;
}

.card-name {
  font-size: 1.1rem;
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  margin-bottom: 10px;
}

.card-desc {
  font-size: 0.85rem;
  color: var(--muted);
  line-height: 1.7;
  margin-bottom: 18px;
}

.card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 22px;
}

.tag {
  font-size: 0.7rem;
  font-family: 'Poppins', sans-serif;
  padding: 3px 10px;
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  border-radius: 5px;
  color: var(--tag-text);
}

.card-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.83rem;
  font-family: 'Poppins', sans-serif;
  font-weight: 600;
  color: var(--accent-light);
  position: relative;
  z-index: 2;
}
.card-cta i { font-size: 0.75rem; transition: transform 0.2s; }
.project-card:hover .card-cta i { transform: translateX(4px); }

/* ── DIVIDER ────────────────────────────────────────────── */
.gradient-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-border), transparent);
  margin: 0 40px;
}

/* ── CONTACT ────────────────────────────────────────────── */
.contact-inner {
  background: rgba(22, 27, 34, 0.65);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border: 1px solid var(--accent-border);
  border-radius: 20px;
  padding: 56px 48px;
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.contact-inner::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0.5;
}

.contact-title { font-size: 1.7rem; margin-bottom: 10px; }
.contact-sub { font-size: 0.88rem; color: var(--muted); margin-bottom: 36px; }

.form-group { margin-bottom: 18px; text-align: left; }
.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 7px;
}
.form-group input,
.form-group textarea {
  width: 100%;
  background: rgba(31, 41, 55, 0.7);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: 10px;
  padding: 12px 16px;
  color: var(--text);
  font-family: 'Poppins', sans-serif;
  font-size: 0.88rem;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.15);
}
.form-group textarea { resize: vertical; min-height: 130px; }

.btn-submit {
  width: 100%;
  background: var(--accent);
  color: #fff;
  font-family: 'Poppins', sans-serif;
  font-size: 0.92rem;
  font-weight: 600;
  padding: 14px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 24px var(--accent-glow);
  transition: background 0.2s, box-shadow 0.2s, transform 0.15s;
  margin-top: 6px;
}
.btn-submit:hover {
  background: #1d4ed8;
  box-shadow: 0 6px 32px rgba(37,99,235,0.5);
  transform: translateY(-1px);
}
.btn-submit:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }

.form-status {
  margin-top: 14px;
  font-size: 0.82rem;
  min-height: 20px;
}
.form-status.success { color: #34d399; }
.form-status.error   { color: #f87171; }

/* ── FOOTER ─────────────────────────────────────────────── */
footer {
  text-align: center;
  padding: 28px 20px;
  font-size: 0.82rem;
  color: #374151;
  border-top: 1px solid var(--border);
}

/* ── DETAIL PAGES ───────────────────────────────────────── */
.project-hero {
  padding: 100px 20px 64px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.project-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 70% 50% at 50% 0%, rgba(37,99,235,0.15) 0%, transparent 70%);
  pointer-events: none;
}
.project-hero-inner { position: relative; z-index: 1; }
.project-hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  letter-spacing: -1px;
  margin-bottom: 14px;
}
.project-hero p { font-size: 1rem; color: var(--muted); max-width: 520px; margin: 0 auto; }

/* Carousel */
.gallery-section { padding: 0 20px 80px; }
.gallery-wrap {
  max-width: 900px; margin: 0 auto;
  border-radius: 16px; overflow: hidden;
  border: 1px solid var(--accent-border);
  box-shadow: 0 8px 40px rgba(0,0,0,0.4);
  position: relative;
}
.gallery-wrap .carousel { position: relative; overflow: hidden; }
.carousel-inner { display: flex; transition: transform 0.5s cubic-bezier(0.4,0,0.2,1); }
.carousel-slide { min-width: 100%; position: relative; background: var(--surface2); }
.carousel-slide img { width: 100%; height: auto; max-height: 480px; object-fit: contain; }
.carousel-caption-bar {
  padding: 10px 18px;
  background: rgba(13,17,23,0.85);
  font-size: 0.82rem;
  color: var(--muted);
  text-align: center;
}
.car-controls {
  display: flex; align-items: center; justify-content: center; gap: 12px;
  padding: 16px;
  background: var(--surface2);
}
.car-btn {
  width: 38px; height: 38px;
  border-radius: 50%;
  background: rgba(31,41,55,0.9);
  border: 1px solid var(--accent-border);
  color: var(--text);
  font-size: 0.9rem;
  cursor: pointer;
  display: flex; align-items: center; justify-content: center;
  transition: background 0.2s, border-color 0.2s;
}
.car-btn:hover { background: var(--accent); border-color: var(--accent); }
.car-dots { display: flex; gap: 7px; align-items: center; }
.car-dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--accent-border);
  cursor: pointer;
  transition: background 0.2s, transform 0.2s;
}
.car-dot.active { background: var(--accent); transform: scale(1.3); }

/* Detail grid */
.detail-section { padding: 0 20px 96px; }
.detail-grid {
  max-width: 960px; margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr; gap: 52px;
}
.detail-sub-title {
  font-size: 1rem;
  font-family: 'Montserrat', sans-serif;
  font-weight: 800;
  margin-bottom: 16px;
}
.detail-text { font-size: 0.88rem; color: var(--muted); line-height: 1.8; margin-bottom: 14px; }

.tech-badges { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 18px; }
.tech-badge {
  font-size: 0.76rem;
  font-family: 'Poppins', sans-serif;
  padding: 5px 14px;
  background: var(--tag-bg);
  border: 1px solid var(--tag-border);
  border-radius: 6px;
  color: var(--tag-text);
  font-weight: 500;
}

.feature-list { list-style: none; display: flex; flex-direction: column; gap: 11px; }
.feature-list li {
  font-size: 0.86rem;
  color: var(--muted);
  display: flex;
  align-items: flex-start;
  gap: 11px;
}
.feature-list li::before {
  content: '';
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
  flex-shrink: 0;
  margin-top: 7px;
}

/* Back button */
.btn-back {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--muted);
  background: rgba(31,41,55,0.6);
  border: 1px solid var(--accent-border);
  padding: 7px 16px; border-radius: 8px;
  transition: color 0.2s, border-color 0.2s;
}
.btn-back:hover { color: var(--text); border-color: var(--accent-strong); }

/* ── RESPONSIVE ─────────────────────────────────────────── */
@media (max-width: 768px) {
  .navbar { padding: 14px 20px; }
  .nav-links { display: none; }
  .projects-grid { grid-template-columns: 1fr; }
  .detail-grid { grid-template-columns: 1fr; gap: 32px; }
  .contact-inner { padding: 36px 24px; }
  .gradient-divider { margin: 0 20px; }
  section { padding: 64px 20px; }
}

@media (max-width: 480px) {
  .hero-btns { flex-direction: column; align-items: center; }
  .btn-accent, .btn-ghost { width: 100%; max-width: 280px; text-align: center; }
}