/* ============================================================
   Pulse8 Secret Share - branded stylesheet
   Brand palette taken from the Pulse8 logo:
     Pink mark  #DC1F5A   - primary accent / CTAs
     Deep blue  #1E3A8A   - text & secondary buttons
   ============================================================ */

:root {
  --brand-pink:       #DC1F5A;
  --brand-pink-dark:  #B5174A;
  --brand-blue:       #1E3A8A;
  --brand-blue-dark:  #162B66;
  --brand-blue-soft:  #EEF2FB;

  --bg-grad-from:     #0E1A3A;
  --bg-grad-to:       #1E3A8A;

  --card:    #FFFFFF;
  --ink:     #0F172A;
  --muted:   #5B6478;
  --border:  #E2E8F0;
  --soft:    #F8FAFC;
  --danger:  #B91C1C;
  --ok:      #047857;

  --radius:  12px;
  --shadow:  0 20px 60px rgba(15, 23, 42, 0.35);
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  background:
    radial-gradient(1200px 600px at 80% -10%, rgba(220,31,90,0.18), transparent 60%),
    radial-gradient(900px 700px at -10% 110%, rgba(30,58,138,0.55), transparent 60%),
    linear-gradient(135deg, var(--bg-grad-from) 0%, var(--bg-grad-to) 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ink);
  padding: 24px;
}

.card {
  background: var(--card);
  width: 100%;
  max-width: 640px;
  border-radius: var(--radius);
  padding: 28px 32px 32px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}
/* Top accent stripe - pink to blue */
.card::before {
  content: "";
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--brand-pink) 0%, var(--brand-blue) 100%);
}

.brand {
  display: flex;
  align-items: center;
  margin-bottom: 20px;
}
.brand img {
  height: 48px;
  width: auto;
}

h1 { margin: 0 0 6px; font-size: 1.55rem; color: var(--brand-blue); }
h2 { margin: 0 0 8px; font-size: 1.15rem; color: var(--brand-blue); }
.lede, .meta, footer small { color: var(--muted); font-size: 0.92rem; }
.warn { color: var(--brand-pink); font-weight: 600; font-size: 0.92rem; }
.error { color: var(--danger); margin-top: 10px; font-size: 0.92rem; }

label {
  display: block;
  font-weight: 600;
  margin-top: 14px;
  margin-bottom: 6px;
  font-size: 0.9rem;
  color: var(--brand-blue);
}
textarea, input[type=text], input[type=password], select {
  width: 100%;
  padding: 10px 12px;
  font-size: 1rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: inherit;
  background: var(--soft);
  color: var(--ink);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
textarea { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; resize: vertical; }
textarea:focus, input:focus, select:focus {
  outline: none;
  border-color: var(--brand-blue);
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.15);
}
small { color: var(--muted); display: block; margin-top: 4px; font-size: 0.8rem; }
.row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 8px; }
@media (max-width: 480px) { .row { grid-template-columns: 1fr; } }

/* Buttons - primary uses Pulse8 blue */
button {
  background: var(--brand-blue);
  color: white;
  border: 0;
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 1rem;
  cursor: pointer;
  margin-top: 18px;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: background 0.15s ease, transform 0.05s ease;
}
button:hover:not(:disabled) { background: var(--brand-blue-dark); }
button:active:not(:disabled) { transform: translateY(1px); }
button:disabled { opacity: 0.55; cursor: wait; }

/* Reveal button - pink to grab attention on the recipient page */
.btn-reveal {
  background: var(--brand-pink);
  width: 100%;
  font-size: 1.05rem;
  padding: 14px;
}
.btn-reveal:hover:not(:disabled) { background: var(--brand-pink-dark); }

.link-btn {
  background: none;
  color: var(--brand-pink);
  padding: 0;
  font-weight: 600;
}
.link-btn:hover { text-decoration: underline; background: none; }

.link-box {
  display: flex;
  gap: 8px;
  margin-top: 8px;
}
.link-box input {
  font-family: ui-monospace, Menlo, monospace;
  font-size: 0.85rem;
  background: var(--brand-blue-soft);
  border-color: #C7D2E8;
  color: var(--brand-blue);
}
.link-box button { margin: 0; padding: 10px 16px; }

.secret-out {
  background: #0F172A;
  color: #E2E8F0;
  padding: 16px;
  border-radius: 8px;
  font-family: ui-monospace, Menlo, monospace;
  white-space: pre-wrap;
  word-break: break-all;
  margin-top: 8px;
  font-size: 0.95rem;
  border-left: 4px solid var(--brand-pink);
}

#result {
  margin-top: 22px;
  padding: 18px;
  background: var(--brand-blue-soft);
  border-radius: 10px;
  border: 1px solid #C7D2E8;
}

footer {
  margin-top: 28px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
  text-align: center;
}
footer .powered {
  color: var(--brand-blue);
  font-weight: 600;
  text-decoration: none;
}
header { margin-bottom: 14px; }