/* Shared design system for the customer-facing storefront pages
   (index/product/download). admin.html intentionally stays plain. */

:root {
  color-scheme: dark;
  --bg: #0d0e13;
  --bg-soft: #14161e;
  --panel: #191c26;
  --panel-2: #20232f;
  --border: #ffffff17;
  --border-strong: #ffffff2a;
  --text: #eef0f4;
  --text-dim: #9aa0b2;
  --text-faint: #6b7080;
  --accent: #7c6bff;
  --accent-2: #ff6bb3;
  --accent-3: #4fd1ff;
  --accent-text: #ffffff;
  --ok: #4ade80;
  --err: #ff7a7a;
  --gradient: linear-gradient(120deg, var(--accent-3), var(--accent), var(--accent-2));
  --shadow-lift: 0 20px 45px -20px rgb(0 0 0 / 0.55);
  --radius: 16px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  background:
    radial-gradient(1200px 600px at 15% -10%, #2a1e5c33, transparent 60%),
    radial-gradient(1000px 500px at 100% 0%, #7c1e5c26, transparent 55%),
    var(--bg);
  color: var(--text);
  margin: 0;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--accent); color: #fff; }

a { color: inherit; }

.muted { color: var(--text-dim); }
.faint { color: var(--text-faint); }

/* --- layout shells --- */

.shell { max-width: 1140px; margin: 0 auto; padding: 0 1.4rem; }
.shell-narrow { max-width: 720px; margin: 0 auto; padding: 0 1.4rem; }

/* --- gradient text / accents --- */

.grad-text {
  background: var(--gradient);
  background-size: 200% auto;
  -webkit-background-clip: text; background-clip: text; color: transparent;
  animation: grad-shift 8s ease infinite;
}
@keyframes grad-shift {
  0%, 100% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
}

/* --- buttons --- */

.btn {
  --btn-h: 3.1rem;
  position: relative;
  display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem;
  height: var(--btn-h);
  padding: 0 1.5rem;
  border: none; border-radius: 999px;
  font-size: 1rem; font-weight: 600; font-family: inherit;
  cursor: pointer;
  color: var(--accent-text);
  background: var(--gradient);
  background-size: 200% auto;
  background-position: 0% 50%;
  box-shadow: 0 10px 30px -10px rgb(124 107 255 / 0.55);
  transition: transform 0.18s ease, box-shadow 0.18s ease, background-position 0.4s ease, opacity 0.18s ease;
  isolation: isolate;
}
.btn:hover:not(:disabled) {
  transform: translateY(-2px);
  background-position: 100% 50%;
  box-shadow: 0 16px 36px -12px rgb(124 107 255 / 0.65);
}
.btn:active:not(:disabled) { transform: translateY(0); }
.btn:disabled { opacity: 0.55; cursor: not-allowed; box-shadow: none; }
.btn.full { width: 100%; }
.btn.loading { color: transparent; }
.btn.loading::after {
  content: ""; position: absolute; width: 1.1rem; height: 1.1rem;
  border: 2px solid #ffffff88; border-top-color: #fff; border-radius: 50%;
  animation: spin 0.7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.btn-ghost {
  display: inline-flex; align-items: center; gap: 0.4rem;
  background: none; border: 1px solid var(--border-strong); color: var(--text-dim);
  border-radius: 999px; padding: 0.5rem 1rem; font-size: 0.85rem; font-family: inherit;
  text-decoration: none; cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease, transform 0.15s ease;
}
.btn-ghost:hover { border-color: var(--accent); color: var(--text); transform: translateX(-2px); }

/* --- glass card --- */

.glass {
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-lift);
}

/* --- badges / tags --- */

.tag {
  display: inline-flex; align-items: center; gap: 0.3rem;
  font-size: 0.72rem; font-weight: 600; letter-spacing: 0.02em;
  padding: 0.28rem 0.65rem; border-radius: 999px;
  background: var(--panel-2); color: var(--text-dim); border: 1px solid var(--border);
}
.tag.custom { color: var(--accent-2); border-color: #ff6bb355; background: #ff6bb314; }

/* --- scroll reveal --- */

.reveal { opacity: 0; transform: translateY(18px); transition: opacity 0.6s ease, transform 0.6s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

/* --- skeleton loading --- */

.skeleton {
  position: relative; overflow: hidden;
  background: var(--panel-2); border-radius: 10px;
}
.skeleton::after {
  content: ""; position: absolute; inset: 0;
  background: linear-gradient(90deg, transparent, #ffffff14, transparent);
  transform: translateX(-100%);
  animation: shimmer 1.4s ease infinite;
}
@keyframes shimmer { 100% { transform: translateX(100%); } }

/* --- custom audio player --- */

.player {
  display: flex; align-items: center; gap: 0.7rem;
  background: var(--panel-2); border: 1px solid var(--border);
  border-radius: 999px; padding: 0.5rem 0.9rem 0.5rem 0.5rem;
}
.player .p-play {
  flex-shrink: 0; width: 2.2rem; height: 2.2rem; border-radius: 50%; border: none; cursor: pointer;
  background: var(--gradient); color: #fff; display: flex; align-items: center; justify-content: center;
  transition: transform 0.15s ease;
}
.player .p-play:hover { transform: scale(1.08); }
.player .p-play svg { width: 0.85rem; height: 0.85rem; }
.player .p-bar {
  flex: 1; height: 5px; border-radius: 999px; background: var(--border-strong);
  position: relative; cursor: pointer;
}
.player .p-fill {
  position: absolute; inset: 0; width: 0%; border-radius: 999px; background: var(--gradient);
  transition: width 0.08s linear;
}
.player .p-time { font-size: 0.72rem; color: var(--text-faint); font-variant-numeric: tabular-nums; flex-shrink: 0; }

/* --- utility fade-in-up for hero elements --- */

.fade-up { animation: fade-up 0.8s ease both; }
@keyframes fade-up { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: translateY(0); } }

@media (max-width: 640px) {
  .shell, .shell-narrow { padding: 0 1rem; }
}

/* --- newsletter popup (email for 10% off) --- */

.newsletter-popup {
  position: fixed;
  right: 1.2rem;
  bottom: 1.2rem;
  z-index: 100;
  width: min(22rem, calc(100vw - 2.4rem));
  padding: 1.3rem 1.4rem;
}
.newsletter-popup .np-close {
  position: absolute; top: 0.6rem; right: 0.7rem;
  background: none; border: none; color: var(--text-faint);
  font-size: 1rem; cursor: pointer; line-height: 1; padding: 0.3rem;
}
.newsletter-popup .np-close:hover { color: var(--text); }
.newsletter-popup .np-title { font-weight: 700; font-size: 1.05rem; margin-bottom: 0.3rem; }
.newsletter-popup .np-sub { color: var(--text-dim); font-size: 0.85rem; margin-bottom: 0.9rem; }
.newsletter-popup .np-email {
  width: 100%; background: var(--panel-2); color: var(--text); border: 1px solid var(--border-strong);
  border-radius: 10px; padding: 0.65rem 0.85rem; font-size: 0.9rem; font-family: inherit;
  margin-bottom: 0.7rem;
}
.newsletter-popup .np-email:focus { outline: none; border-color: var(--accent); }
.newsletter-popup .np-consent {
  display: flex; align-items: flex-start; gap: 0.45rem; font-size: 0.78rem;
  color: var(--text-dim); margin-bottom: 0.8rem; cursor: pointer;
}
.newsletter-popup .np-consent input { width: auto; margin: 0.15rem 0 0; }
.newsletter-popup .np-consent a { color: var(--text-dim); }
.newsletter-popup .np-submit { --btn-h: 2.7rem; font-size: 0.9rem; }
.newsletter-popup .np-status { margin-top: 0.6rem; font-size: 0.82rem; }
.newsletter-popup .np-status.err { color: var(--err); }
.newsletter-popup .np-status.ok { color: var(--ok); }
.newsletter-popup .np-code {
  display: inline-block; margin-top: 0.4rem; padding: 0.3rem 0.7rem;
  border-radius: 8px; background: var(--panel-2); border: 1px solid var(--border-strong);
  font-weight: 700; letter-spacing: 0.03em; color: var(--text);
  cursor: pointer; user-select: all;
}
.newsletter-popup .np-code:hover { border-color: var(--accent); }