/* =====================================================
   PROJECT DETAIL PAGE — CSS
   ===================================================== */

:root {
  --clr-bg:       #07090f;
  --clr-surface:  #0f1117;
  --clr-card:     #141720;
  --clr-border:   rgba(255,255,255,0.07);
  --clr-primary:  #7c5cfc;
  --clr-cyan:     #22d3ee;
  --clr-pink:     #f472b6;
  --clr-text:     #e2e8f0;
  --clr-muted:    #8892a4;
  --clr-dim:      #4b5563;
  --grad-primary: linear-gradient(135deg, #7c5cfc 0%, #22d3ee 100%);
  --grad-hero:    linear-gradient(135deg, #0f0c29 0%, #302b63 50%, #24243e 100%);
  --glow-primary: 0 0 40px rgba(124,92,252,0.35);
  --shadow-hover: 0 12px 40px rgba(0,0,0,0.6);
  --t-fast:  0.18s ease;
  --t-norm:  0.32s ease;
  --t-slow:  0.5s ease;
  --r-sm: 8px;
  --r-md: 14px;
  --r-lg: 22px;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Space Grotesk', system-ui, sans-serif;
  background: var(--clr-bg);
  color: var(--clr-text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--clr-bg); }
::-webkit-scrollbar-thumb { background: var(--clr-primary); border-radius: 99px; }

.container {
  width: min(1100px, 100% - 2.5rem);
  margin-inline: auto;
}

/* ---- Animations ---- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(32px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes float {
  0%,100% { transform: translateY(0); }
  50%      { transform: translateY(-10px); }
}

/* ---- Reveal ---- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.65s ease, transform 0.65s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }

/* ---- Back button ---- */
.back-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--clr-muted);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 0.5rem 0;
  transition: color var(--t-fast), gap var(--t-fast);
  margin-bottom: 2rem;
  cursor: pointer;
}
.back-btn:hover { color: var(--clr-text); gap: 0.75rem; }
.back-btn svg { transition: transform var(--t-fast); }
.back-btn:hover svg { transform: translateX(-3px); }

/* ---- Header ---- */
.proj-header {
  background: var(--clr-surface);
  border-bottom: 1px solid var(--clr-border);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
}

.proj-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.proj-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.4rem;
  font-weight: 800;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ---- Hero ---- */
.proj-hero {
  background: var(--grad-hero);
  padding: 5rem 0 4rem;
  position: relative;
  overflow: hidden;
}

.proj-hero::before {
  content: '';
  position: absolute;
  width: 500px; height: 500px;
  background: radial-gradient(circle, rgba(124,92,252,0.15) 0%, transparent 70%);
  top: -100px; right: -100px;
  border-radius: 50%;
  animation: float 8s ease-in-out infinite;
  pointer-events: none;
}

.proj-hero-content {
  position: relative;
  z-index: 2;
  max-width: 680px;
  animation: fadeInUp 0.7s ease both;
}

.proj-hero-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.76rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--clr-cyan);
  background: rgba(34,211,238,0.08);
  border: 1px solid rgba(34,211,238,0.2);
  padding: 0.35rem 0.9rem;
  border-radius: 99px;
  margin-bottom: 1.2rem;
}

.proj-hero-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.1;
  margin-bottom: 1rem;
}

.proj-hero-subtitle {
  font-size: 1.05rem;
  color: rgba(226,232,240,0.7);
  line-height: 1.75;
  margin-bottom: 2rem;
}

.proj-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.proj-tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.3rem 0.8rem;
  border-radius: 99px;
  background: rgba(124,92,252,0.15);
  border: 1px solid rgba(124,92,252,0.3);
  color: var(--clr-primary);
}

/* ---- Main image ---- */
.proj-main-image {
  margin: 3rem 0;
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--clr-border);
  box-shadow: var(--shadow-hover);
}

.proj-main-image img {
  width: 100%;
  height: auto;
  display: block;
  transition: transform var(--t-slow);
}

.proj-main-image:hover img { transform: scale(1.02); }

/* ---- Section ---- */
.proj-section {
  padding: 4rem 0;
}

.proj-section + .proj-section {
  border-top: 1px solid var(--clr-border);
}

.proj-section-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--clr-text);
  margin-bottom: 1.8rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.proj-section-title::before {
  content: '';
  width: 4px; height: 22px;
  background: var(--grad-primary);
  border-radius: 99px;
}

/* ---- Description ---- */
.proj-desc-text {
  color: var(--clr-muted);
  font-size: 0.97rem;
  line-height: 1.85;
  max-width: 780px;
  margin-bottom: 1.2rem;
}

/* ---- Features ---- */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.2rem;
}

.feature-item {
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--r-md);
  padding: 1.4rem 1.6rem;
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  transition: all var(--t-norm);
}

.feature-item:hover {
  border-color: rgba(124,92,252,0.35);
  transform: translateY(-3px);
  box-shadow: var(--glow-primary);
}

.feature-icon {
  width: 36px; height: 36px;
  border-radius: var(--r-sm);
  background: rgba(124,92,252,0.12);
  border: 1px solid rgba(124,92,252,0.2);
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  font-size: 1.1rem;
}

.feature-text {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--clr-text);
  line-height: 1.4;
}

/* ---- Gallery ---- */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.2rem;
}

.gallery-item {
  border-radius: var(--r-md);
  overflow: hidden;
  border: 1px solid var(--clr-border);
  aspect-ratio: 16/9;
  background: var(--clr-card);
  cursor: pointer;
  position: relative;
}

.gallery-item img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform var(--t-slow);
}

.gallery-item:hover img { transform: scale(1.07); }

.gallery-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(7,9,15,0.6) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--t-norm);
}

.gallery-item:hover::after { opacity: 1; }

/* ---- Tech stack ---- */
.tech-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.tech-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--clr-card);
  border: 1px solid var(--clr-border);
  border-radius: var(--r-sm);
  padding: 0.65rem 1.2rem;
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--clr-muted);
  transition: all var(--t-norm);
}

.tech-item:hover {
  border-color: rgba(124,92,252,0.4);
  color: var(--clr-text);
  background: rgba(124,92,252,0.07);
  transform: translateY(-2px);
}

.tech-item img {
  width: 26px; height: 26px;
  object-fit: contain;
}

/* ---- Live link ---- */
.proj-live-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--grad-primary);
  color: #fff;
  font-weight: 600;
  font-size: 0.92rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--r-sm);
  transition: all var(--t-norm);
  box-shadow: var(--glow-primary);
}

.proj-live-link:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 50px rgba(124,92,252,0.5);
}

.proj-gh-link {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: transparent;
  color: var(--clr-primary);
  font-weight: 600;
  font-size: 0.92rem;
  padding: 0.75rem 1.75rem;
  border-radius: var(--r-sm);
  border: 1.5px solid var(--clr-primary);
  transition: all var(--t-norm);
}

.proj-gh-link:hover {
  background: rgba(124,92,252,0.12);
  transform: translateY(-2px);
}

.proj-cta {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 0.5rem;
}

/* ---- Footer ---- */
.proj-footer {
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
  padding: 2rem 0;
}

.proj-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.proj-footer-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 800;
  background: var(--grad-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.proj-footer-copy {
  font-size: 0.82rem;
  color: var(--clr-dim);
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .proj-hero { padding: 4rem 0 3rem; }
  .features-grid { grid-template-columns: 1fr; }
  .gallery { grid-template-columns: 1fr; }
  .proj-footer .container { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .tech-stack { gap: 0.65rem; }
  .proj-cta { flex-direction: column; }
  .proj-live-link, .proj-gh-link { width: 100%; justify-content: center; }
}