:root {
  --bg: #090c0a;
  --bg2: #0f1712;
  --green: #39ff8f;
  --green-dim: #1fae5c;
  --card: #111a15;
  --border: #1f3a28;
  --text: #e8fff0;
  --text-dim: #8fb8a2;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  background: radial-gradient(circle at 20% 0%, #0f2016 0%, var(--bg) 55%);
  color: var(--text);
  min-height: 100vh;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 32px;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  background: rgba(9, 12, 10, 0.85);
  backdrop-filter: blur(6px);
  z-index: 10;
}

.brand {
  font-size: 22px;
  font-weight: 800;
  letter-spacing: 1px;
}
.brand-mark { filter: drop-shadow(0 0 6px var(--green)); }
.accent { color: var(--green); }

.nav-auth { display: flex; gap: 10px; align-items: center; font-size: 14px; color: var(--text-dim); }
.nav-auth button {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 14px;
  border-radius: 20px;
  cursor: pointer;
  transition: 0.2s;
}
.nav-auth button:hover { border-color: var(--green); color: var(--green); }

.hero {
  text-align: center;
  padding: 60px 24px 30px;
  position: relative;
}

.viper-wrap { display: flex; justify-content: center; margin-bottom: 10px; }
.viper { width: min(600px, 90vw); height: auto; }
.viper-body {
  stroke: var(--green);
  filter: drop-shadow(0 0 10px rgba(57,255,143,0.6));
  stroke-dasharray: 18 14;
  animation: slither 2.4s linear infinite, glow 3s ease-in-out infinite;
}
.viper-head ellipse { fill: var(--green); filter: drop-shadow(0 0 8px var(--green)); }
.viper-head .eye { fill: #06130a; }
.tongue { stroke: #ff4d6d; animation: flick 1.6s ease-in-out infinite; }

@keyframes slither {
  to { stroke-dashoffset: -320; }
}
@keyframes glow {
  0%, 100% { opacity: 0.85; }
  50% { opacity: 1; }
}
@keyframes flick {
  0%, 40%, 100% { opacity: 0; }
  45%, 60% { opacity: 1; }
}

h1 {
  font-size: clamp(32px, 5vw, 56px);
  margin: 10px 0 12px;
  text-shadow: 0 0 20px rgba(57,255,143,0.35);
}
.subtitle { color: var(--text-dim); max-width: 560px; margin: 0 auto; font-size: 16px; }

main { max-width: 960px; margin: 0 auto; padding: 0 24px 60px; }

.panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
  margin: 24px 0;
}

.tabs { display: flex; gap: 8px; margin-bottom: 18px; }
.tab {
  flex: 1;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  padding: 10px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
}
.tab.active { background: var(--green-dim); color: #06130a; border-color: var(--green); }

.auth-form, .product-form {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.auth-form.hidden, .product-form.hidden, .panel.hidden { display: none; }

input, textarea {
  background: var(--bg2);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 15px;
  font-family: inherit;
}
input:focus, textarea:focus { outline: none; border-color: var(--green); }
textarea { resize: vertical; min-height: 70px; }

button[type="submit"] {
  background: var(--green);
  color: #06130a;
  border: none;
  padding: 12px;
  border-radius: 10px;
  font-weight: 700;
  cursor: pointer;
  font-size: 15px;
  transition: transform 0.15s;
}
button[type="submit"]:hover { transform: translateY(-1px); }

.error { color: #ff6b6b; min-height: 18px; margin: 10px 0 0; font-size: 14px; }

.shop h2, #orders-section h2, #add-product-section h2 { margin-top: 0; }

.products {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 18px;
  margin-top: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  transition: 0.2s;
}
.card:hover { border-color: var(--green); transform: translateY(-2px); }
.card .emoji { font-size: 36px; }
.card h3 { margin: 0; font-size: 18px; }
.card p { margin: 0; color: var(--text-dim); font-size: 13px; flex-grow: 1; }
.card .price { color: var(--green); font-weight: 700; font-size: 16px; }
.card .hit-rate {
  align-self: flex-start;
  background: rgba(57,255,143,0.12);
  color: var(--green);
  border: 1px solid var(--green-dim);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.5px;
  padding: 3px 9px;
  border-radius: 20px;
}
.card .row { display: flex; gap: 8px; align-items: center; justify-content: space-between; }
.card button {
  background: var(--green);
  color: #06130a;
  border: none;
  padding: 8px 14px;
  border-radius: 8px;
  font-weight: 700;
  cursor: pointer;
}
.card .delete-btn {
  background: transparent;
  color: #ff6b6b;
  border: 1px solid #ff6b6b44;
  padding: 6px 10px;
  font-size: 12px;
}

.orders-list { list-style: none; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.orders-list li {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  display: flex;
  justify-content: space-between;
  font-size: 14px;
}

footer { text-align: center; color: var(--text-dim); padding: 30px; font-size: 13px; }


@media (max-width: 480px) {
  .nav { padding: 14px 18px; }
  .hero { padding: 40px 16px 20px; }
}