/* paste& — light navy blue frame, soft light panel, pills.
   Themes are driven by <html data-theme="light|dark">. */

:root, :root[data-theme="light"] {
  --frame: #3a5aa8;
  --panel: #f1f4fc;
  --card: linear-gradient(135deg, #f8faff 0%, #e9effb 100%);
  --card-border: #dae3f5;
  --text: #1c2c50;
  --muted: #7889ae;
  --accent: #3a5fc0;
  --accent-soft: #e0e8f9;
  --accent-softer: #edf1fc;
  --pill-text: #3a58ad;
  --danger: #d9694f;
  --accent-grad: linear-gradient(135deg, #5b7ee0 0%, #3a5fc0 55%, #2a478f 100%);
  --card-sheen: rgba(255, 255, 255, 0.65);
  --shadow: 0 18px 40px rgba(58, 90, 168, 0.14);
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas, monospace;
}

:root[data-theme="dark"] {
  --frame: #22346e;
  --panel: #0b1128;
  --card: linear-gradient(135deg, #18244a 0%, #131e3d 100%);
  --card-border: #2a396a;
  --text: #e6ecfa;
  --muted: #8b9bc4;
  --accent: #7d99ea;
  --accent-soft: #1e2c56;
  --accent-softer: #151f42;
  --pill-text: #9db3f2;
  --danger: #f0a08a;
  --accent-grad: linear-gradient(135deg, #5b7ee0 0%, #3a5fc0 55%, #2a478f 100%);
  --card-sheen: rgba(255, 255, 255, 0.08);
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
}

* { box-sizing: border-box; }

html, body { height: 100%; }

body {
  margin: 0;
  background: var(--frame);
  color: var(--text);
  font-family: "Google Sans", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  line-height: 1.5;
}

.frame {
  min-height: 100vh;
  padding: 14px;
}

.panel {
  background: var(--panel);
  border-radius: 22px;
  min-height: calc(100vh - 28px);
  display: flex;
  flex-direction: column;
  padding: 0 2rem;
  transition: background 0.25s;
}

/* Header */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.75rem 0.5rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  text-decoration: none;
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
}

.brand-logo {
  width: 36px;
  height: 36px;
  border-radius: 9px;
  box-shadow: 0 4px 14px rgba(61, 85, 245, 0.45);
  transition: transform 0.2s;
}

.brand:hover .brand-logo { transform: rotate(-6deg) scale(1.06); }

.brand-amp {
  background: var(--accent-grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.header-actions { display: flex; align-items: center; gap: 0.75rem; }

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: none;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition: background 0.15s;
}

.icon-btn:hover { background: var(--accent-soft); }


/* Main */
.content {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 0;
}

.center-stage { width: 100%; max-width: 640px; }

/* Paste card */
.paste-card {
  position: relative;
  background: var(--card);
  border: 1px solid var(--card-border);
  border-radius: 18px;
  box-shadow: inset 0 1px 0 var(--card-sheen), var(--shadow);
  padding: 1.25rem 1.4rem 1rem;
  overflow: hidden;
  transition: box-shadow 0.25s, transform 0.25s;
}

.paste-card:focus-within {
  transform: translateY(-2px);
  box-shadow: inset 0 1px 0 var(--card-sheen), 0 24px 55px rgba(61, 85, 245, 0.18);
}

.paste-card::after {
  content: "";
  position: absolute;
  inset: 0 auto auto 0;
  width: 60%;
  height: 45%;
  background: linear-gradient(160deg, var(--card-sheen), transparent 70%);
  opacity: 0.5;
  pointer-events: none;
}

.paste-input {
  width: 100%;
  min-height: 120px;
  resize: vertical;
  border: none;
  background: transparent;
  color: var(--text);
  font-family: inherit;
  font-size: 1rem;
  outline: none;
}

.paste-input::placeholder { color: var(--muted); }

.paste-card-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 0.75rem;
}

.char-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted);
  font-size: 0.85rem;
  font-weight: 500;
}

.send-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 12px;
  border: none;
  background: var(--accent-grad);
  color: #fff;
  cursor: pointer;
  box-shadow: 0 6px 16px rgba(69, 96, 255, 0.4), inset 0 1px 0 rgba(255, 255, 255, 0.35);
  transition: transform 0.15s, box-shadow 0.15s, filter 0.15s;
}

.send-btn:hover {
  transform: translateY(-1px) scale(1.05);
  box-shadow: 0 10px 22px rgba(69, 96, 255, 0.5), inset 0 1px 0 rgba(255, 255, 255, 0.35);
  filter: brightness(1.08);
}
.send-btn:active { transform: scale(0.97); }
.send-btn:disabled { opacity: 0.5; cursor: wait; transform: none; }

/* Pills */
.pills {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.6rem;
  margin: 1.4rem 0 0;
  padding: 0;
}

.pill {
  background: var(--accent-softer);
  border: 1.5px solid var(--accent);
  color: var(--pill-text);
  font-size: 0.85rem;
  font-weight: 500;
  border-radius: 999px;
  padding: 0.35rem 0.95rem;
  box-shadow: inset 0 1px 0 var(--card-sheen);
  transition: transform 0.15s, box-shadow 0.15s;
}

.pill:hover {
  transform: translateY(-2px);
  box-shadow: inset 0 1px 0 var(--card-sheen), 0 8px 18px rgba(58, 90, 168, 0.18);
}

/* Buttons */
.btn {
  border: none;
  border-radius: 10px;
  padding: 0.6rem 1.2rem;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
  transition: filter 0.15s, transform 0.05s;
}

.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--accent-grad);
  color: #fff;
  box-shadow: 0 6px 16px rgba(69, 96, 255, 0.35), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}
.btn-primary:hover { filter: brightness(1.1); transform: translateY(-1px); }

.btn-ghost {
  background: transparent;
  color: var(--muted);
  border: 1px solid var(--card-border);
}
.btn-ghost:hover { color: var(--text); }

.error { color: var(--danger); margin: 0.9rem 0 0; font-size: 0.9rem; text-align: center; }

/* Result */
.result h2 { margin: 0 0 0.4rem; }
.muted { color: var(--muted); font-size: 0.9rem; }

.link-row { display: flex; gap: 0.6rem; margin: 1rem 0; }

.link-input {
  flex: 1;
  background: var(--accent-softer);
  border: 1px solid var(--accent-soft);
  border-radius: 10px;
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.85rem;
  padding: 0.6rem 0.8rem;
  min-width: 0;
}

/* Viewer */
.viewer-status { color: var(--muted); text-align: center; padding: 1.5rem 0; }
.viewer-reveal { text-align: center; padding: 1rem 0 1.25rem; }
.viewer-reveal .btn { margin-top: 0.75rem; }

.viewer-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.75rem;
}

.burn-notice { color: #c07f10; font-size: 0.85rem; }
:root[data-theme="dark"] .burn-notice { color: #f5c04e; }

.paste-content {
  background: var(--accent-softer);
  border: 1px solid var(--accent-soft);
  border-radius: 10px;
  padding: 1rem;
  font-family: var(--mono);
  font-size: 0.9rem;
  white-space: pre-wrap;
  word-break: break-word;
  margin: 0 0 0.5rem;
  max-height: 60vh;
  overflow: auto;
}

.gone, .viewer-error { text-align: center; padding: 2rem 1.25rem; }
.gone h1, .viewer-error h1 { margin-top: 0; }
.gone .btn, .viewer-error .btn { margin-top: 1rem; }

/* Footer */
.site-footer {
  text-align: center;
  padding: 1.5rem 0 2rem;
}

.footer-brand {
  display: inline-block;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text);
  text-decoration: none;
  margin-bottom: 0.35rem;
}

.footer-links { font-size: 0.9rem; color: var(--muted); }
.footer-links a { color: var(--text); font-weight: 500; }
.footer-links span { margin: 0 0.5rem; }

code { font-family: var(--mono); color: var(--accent); }

@media (max-width: 600px) {
  .panel { padding: 0 1rem; }
  .link-row { flex-direction: column; }
}
