/* ============================================================
   Surgical Shop — Public Stylesheet
   Palette: #1a1a2e base | #4a90d9 accent | #c9a84c gold
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Instrument+Sans:ital,wght@0,400;0,500;0,600;0,700;1,400&family=DM+Serif+Display:ital@0;1&display=swap');

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

:root {
  --base:    #1a1a2e;
  --base-2:  #16213e;
  --base-3:  #0f3460;
  --accent:  #4a90d9;
  --accent-2:#6aaee8;
  --gold:    #c9a84c;
  --white:   #f0f4f8;
  --muted:   #8a9bb0;
  --glass-bg:    rgba(255,255,255,0.06);
  --glass-border:rgba(255,255,255,0.12);
  --glass-hover: rgba(255,255,255,0.10);
  --shadow-glow: 0 0 30px rgba(74,144,217,0.25);
  --radius:  12px;
  --radius-lg: 20px;
  --transition: 250ms cubic-bezier(0.4,0,0.2,1);
  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body:    'Instrument Sans', system-ui, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background-color: var(--base);
  color: var(--white);
  line-height: 1.6;
  min-height: 100vh;
}

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

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

/* ── Navigation ────────────────────────────────────────── */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 64px;
  background: rgba(26,26,46,0.85);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--glass-border);
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.4rem;
  color: var(--white);
  letter-spacing: 0.01em;
}

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

.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: 0.03em;
  text-transform: uppercase;
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--white); }

/* ── Hero ──────────────────────────────────────────────── */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  padding: 6rem 2rem 4rem;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 50% 0%, rgba(74,144,217,0.18) 0%, transparent 65%),
    radial-gradient(ellipse 60% 40% at 90% 80%, rgba(15,52,96,0.5) 0%, transparent 60%),
    linear-gradient(160deg, #1a1a2e 0%, #0f1629 40%, #0a1628 100%);
  z-index: 0;
}

/* Shimmer grid lines */
.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(74,144,217,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(74,144,217,0.05) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 760px;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
  padding: 0.35rem 1rem;
  border: 1px solid rgba(74,144,217,0.3);
  border-radius: 100px;
  background: rgba(74,144,217,0.08);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 7vw, 5.5rem);
  line-height: 1.05;
  color: var(--white);
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
}

.hero h1 em {
  font-style: italic;
  color: var(--accent);
}

.hero-tagline {
  font-size: 1.1rem;
  color: var(--muted);
  margin-bottom: 2.5rem;
  min-height: 1.8em;
}

.cursor {
  display: inline-block;
  width: 2px;
  height: 1.1em;
  background: var(--accent);
  margin-left: 2px;
  vertical-align: middle;
  animation: blink 1s step-end infinite;
}

@keyframes blink { 0%,100% { opacity:1; } 50% { opacity:0; } }

.hero-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent);
  color: var(--white);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 0.85rem 2rem;
  border-radius: 100px;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}
.hero-cta:hover {
  background: var(--accent-2);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(74,144,217,0.4);
}

.hero-scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  animation: float 2.5s ease-in-out infinite;
}

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

.hero-scroll-hint svg { opacity: 0.5; }

/* ── Section Layout ────────────────────────────────────── */
.section {
  padding: 5rem 2rem;
  max-width: 1380px;
  margin: 0 auto;
}

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.5rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  color: var(--white);
}

.section-title span { color: var(--accent); }

/* ── Search & Filter Bar ───────────────────────────────── */
.search-bar-wrap {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.75rem;
  margin-bottom: 2.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  backdrop-filter: blur(8px);
}

.search-input-wrap {
  flex: 1;
  min-width: 200px;
  position: relative;
}

.search-input-wrap svg {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  pointer-events: none;
}

#search-input {
  width: 100%;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 0.7rem 1rem 0.7rem 2.75rem;
  outline: none;
  transition: border-color var(--transition), background var(--transition);
}

#search-input::placeholder { color: var(--muted); }
#search-input:focus {
  border-color: var(--accent);
  background: rgba(74,144,217,0.06);
  box-shadow: 0 0 0 3px rgba(74,144,217,0.15);
}

.filter-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
}

.pill {
  padding: 0.4rem 1rem;
  border-radius: 100px;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  cursor: pointer;
  border: 1px solid var(--glass-border);
  background: transparent;
  color: var(--muted);
  font-family: var(--font-body);
  transition: all var(--transition);
  user-select: none;
}

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

.pill.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--white);
  box-shadow: 0 0 15px rgba(74,144,217,0.3);
}

/* ── Product Grid ──────────────────────────────────────── */
#product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(270px, 1fr));
  gap: 1.5rem;
}

/* ── Product Card ──────────────────────────────────────── */
.product-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition), background var(--transition);
  opacity: 0;
  transform: translateY(18px);
  animation: card-in 0.45s ease forwards;
  backdrop-filter: blur(4px);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  text-decoration: none;
  color: inherit;
}

@keyframes card-in {
  to { opacity: 1; transform: translateY(0); }
}

.product-card:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow-glow), 0 20px 40px rgba(0,0,0,0.4);
  border-color: rgba(74,144,217,0.35);
  background: var(--glass-hover);
}

.card-icon {
  width: 100%;
  height: 140px;
  background: linear-gradient(135deg, rgba(74,144,217,0.1) 0%, rgba(15,52,96,0.4) 100%);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(74,144,217,0.15);
}

.card-icon svg {
  width: 56px;
  height: 56px;
  opacity: 0.7;
  color: var(--accent);
}

.card-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: var(--radius);
}

.card-badges {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.badge-stock {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
  border-radius: 100px;
}

.badge-stock.in-stock {
  background: rgba(52,211,153,0.15);
  color: #34d399;
  border: 1px solid rgba(52,211,153,0.3);
}

.badge-stock.out-stock {
  background: rgba(239,68,68,0.12);
  color: #f87171;
  border: 1px solid rgba(239,68,68,0.25);
}

.badge-featured {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.25rem 0.6rem;
  border-radius: 100px;
  background: rgba(201,168,76,0.15);
  color: var(--gold);
  border: 1px solid rgba(201,168,76,0.3);
}

.card-body { flex: 1; display: flex; flex-direction: column; gap: 0.4rem; }

.card-category {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--accent);
}

.card-name {
  font-size: 1rem;
  font-weight: 600;
  color: var(--white);
  line-height: 1.35;
}

.card-desc {
  font-size: 0.82rem;
  color: var(--muted);
  line-height: 1.55;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
}

.card-price {
  font-family: var(--font-display);
  font-size: 1.35rem;
  color: var(--white);
}

.card-price span { font-size: 0.8rem; color: var(--muted); font-family: var(--font-body); }

.card-arrow {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(74,144,217,0.15);
  border: 1px solid rgba(74,144,217,0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  transition: background var(--transition), transform var(--transition);
}

.product-card:hover .card-arrow {
  background: var(--accent);
  color: var(--white);
  transform: translateX(3px);
}

/* ── No results ────────────────────────────────────────── */
.no-results {
  grid-column: 1 / -1;
  text-align: center;
  padding: 4rem;
  color: var(--muted);
}
.no-results svg { margin: 0 auto 1rem; opacity: 0.4; }
.no-results p { font-size: 1.05rem; }

/* ── Product Detail Page ───────────────────────────────── */
.detail-wrap {
  max-width: 1100px;
  margin: 0 auto;
  padding: 8rem 2rem 5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.detail-visual {
  background: linear-gradient(135deg, rgba(74,144,217,0.1), rgba(15,52,96,0.5));
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  aspect-ratio: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(8px);
}

.detail-visual svg { width: 100px; height: 100px; color: var(--accent); opacity: 0.6; }
.detail-visual img { width: 100%; height: 100%; object-fit: cover; border-radius: var(--radius-lg); }

.detail-info { display: flex; flex-direction: column; gap: 1.25rem; }

.detail-eyebrow {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.detail-category {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

.detail-name {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  color: var(--white);
  line-height: 1.15;
}

.detail-desc {
  font-size: 0.95rem;
  color: var(--muted);
  line-height: 1.75;
}

.detail-price-row {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.detail-price {
  font-family: var(--font-display);
  font-size: 2.5rem;
  color: var(--white);
}

.detail-back {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--accent);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 1rem;
  transition: gap var(--transition);
}
.detail-back:hover { gap: 0.75rem; }

/* ── Footer ────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--glass-border);
  padding: 2.5rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}
footer a { color: var(--accent); }

/* ── Loading Spinner ────────────────────────────────────── */
.spinner {
  grid-column: 1 / -1;
  display: flex;
  justify-content: center;
  padding: 3rem;
}

.spinner::after {
  content: '';
  width: 36px; height: 36px;
  border: 3px solid var(--glass-border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Responsive ────────────────────────────────────────── */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .detail-wrap { grid-template-columns: 1fr; }
  .section-header { flex-direction: column; align-items: flex-start; }
  #product-grid { grid-template-columns: 1fr; }
}

@media (min-width: 769px) and (max-width: 1200px) {
  #product-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1200px) {
  #product-grid { grid-template-columns: repeat(4, 1fr); }
}