/* ═══════════════════════════════════════════════════════════════
   Inkling Post Office — Stylesheet
   Vintage + nostalgic + inky aesthetic
   ═══════════════════════════════════════════════════════════════ */

:root {
  --ink:       #2C1810;
  --cream:     #FAF6EE;
  --parchment: #F5EDD8;
  --wax:       #8B2635;
  --gold:      #C9962A;
  --sage:      #4A6741;
  --purple:    #534AB7;
  --muted:     #7A6E65;

  --ff-serif:  'Source Serif 4', Georgia, serif;
  --ff-display:'Playfair Display', Georgia, serif;
  --ff-stamp:  'Special Elite', 'Courier New', monospace;

  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  14px;

  --max-w: 820px;
}

/* ── Reset ─────────────────────────────────────────────────── */
.ipo-app *, .ipo-viewer * { box-sizing: border-box; }

/* ── App wrapper ────────────────────────────────────────────── */
.ipo-app, .ipo-viewer {
  font-family: var(--ff-serif);
  color: var(--ink);
  background: var(--cream);
  min-height: 100vh;
}

/* ── Masthead ───────────────────────────────────────────────── */
.ipo-masthead {
  text-align: center;
  padding: 3rem 1rem 2rem;
  border-bottom: 1px solid rgba(44,24,16,0.12);
  background: var(--parchment);
}
.ipo-seal {
  font-family: var(--ff-stamp);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--muted);
  text-transform: uppercase;
  margin-bottom: 10px;
}
.ipo-title {
  font-family: var(--ff-display);
  font-size: clamp(28px, 5vw, 44px);
  font-weight: 700;
  color: var(--ink);
  line-height: 1.1;
  margin: 0;
}
.ipo-title em { font-style: italic; font-weight: 500; color: var(--wax); }
.ipo-subtitle {
  font-size: 15px;
  color: var(--muted);
  font-style: italic;
  margin: 10px 0 0;
}

/* ── Nav ────────────────────────────────────────────────────── */
.ipo-nav {
  display: flex;
  overflow-x: auto;
  background: var(--parchment);
  border-bottom: 1px solid rgba(44,24,16,0.12);
  gap: 0;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.ipo-nav::-webkit-scrollbar { display: none; }
.ipo-nav-btn {
  flex: 0 0 auto;
  font-family: var(--ff-stamp);
  font-size: 12px;
  letter-spacing: 0.08em;
  padding: 12px 18px;
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  color: var(--muted);
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
  white-space: nowrap;
}
.ipo-nav-btn:hover { color: var(--ink); }
.ipo-nav-btn.active { color: var(--ink); border-bottom-color: var(--wax); }

/* ── Rooms container ────────────────────────────────────────── */
.ipo-rooms { max-width: var(--max-w); margin: 0 auto; padding: 0 1rem; }
.ipo-room { display: none; }
.ipo-room.active { display: block; }
.ipo-room-inner { padding: 2rem 0; }

.ipo-room-title {
  font-family: var(--ff-display);
  font-size: 26px;
  font-style: italic;
  font-weight: 500;
  color: var(--ink);
  margin: 0 0 4px;
}
.ipo-room-intro {
  font-size: 14px;
  color: var(--muted);
  margin: 0 0 1.75rem;
  line-height: 1.6;
}

/* ── Lobby grid ─────────────────────────────────────────────── */
.ipo-room-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 14px;
  margin-top: 1rem;
}
.ipo-room-card {
  background: var(--parchment);
  border: 1px solid rgba(44,24,16,0.13);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  cursor: pointer;
  transition: box-shadow 0.2s, transform 0.15s;
}
.ipo-room-card:hover { transform: translateY(-2px); box-shadow: 0 6px 18px rgba(44,24,16,0.1); }
.ipo-room-icon { font-size: 26px; margin-bottom: 10px; }
.ipo-room-card-title {
  font-family: var(--ff-display);
  font-size: 16px;
  font-weight: 500;
  color: var(--ink);
  margin: 0 0 6px;
}
.ipo-room-card-desc { font-size: 13px; color: var(--muted); line-height: 1.55; margin: 0; }

/* ── Badges ─────────────────────────────────────────────────── */
.ipo-badge {
  display: inline-block;
  font-family: var(--ff-stamp);
  font-size: 10px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: 4px;
  margin-top: 10px;
}
.ipo-badge--amber  { background: #FAEEDA; color: #633806; }
.ipo-badge--purple { background: #EEEDFE; color: #3C3489; }
.ipo-badge--green  { background: #EAF3DE; color: #27500A; }
.ipo-optional      { font-size: 11px; color: var(--muted); font-style: italic; }

/* ── Form elements ───────────────────────────────────────────── */
.ipo-form-section { margin-bottom: 1.25rem; }
.ipo-form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 1.25rem; }
@media (max-width: 560px) { .ipo-form-row { grid-template-columns: 1fr; } }

.ipo-label {
  display: block;
  font-family: var(--ff-stamp);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: 6px;
}
.ipo-input, .ipo-textarea, .ipo-select {
  width: 100%;
  background: rgba(255,255,255,0.7);
  border: 1px solid rgba(44,24,16,0.2);
  border-radius: var(--radius-sm);
  padding: 10px 13px;
  font-family: var(--ff-serif);
  font-size: 14px;
  color: var(--ink);
  transition: border-color 0.2s;
}
.ipo-input:focus, .ipo-textarea:focus, .ipo-select:focus {
  outline: none;
  border-color: var(--gold);
}
.ipo-textarea { resize: vertical; line-height: 1.7; }
.ipo-textarea--letter { font-style: italic; min-height: 200px; }

/* ── City picker ─────────────────────────────────────────────── */
.ipo-city-grid { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 0.5rem; }
.ipo-city-btn {
  display: flex; align-items: center; gap: 5px;
  font-family: var(--ff-stamp);
  font-size: 12px;
  padding: 6px 12px;
  border: 1px solid rgba(44,24,16,0.18);
  border-radius: 20px;
  background: var(--cream);
  color: var(--muted);
  cursor: pointer;
  transition: all 0.15s;
}
.ipo-city-btn:hover, .ipo-city-btn.selected { background: var(--parchment); color: var(--ink); border-color: var(--gold); }
.ipo-city-emoji { font-size: 14px; }

/* ── Stamp picker ────────────────────────────────────────────── */
.ipo-stamp-grid { display: flex; flex-wrap: wrap; gap: 8px; }
.ipo-stamp-btn {
  width: 42px; height: 52px;
  border: 1px solid rgba(44,24,16,0.2);
  border-radius: 4px;
  background: rgba(255,255,255,0.6);
  font-size: 20px;
  cursor: pointer;
  transition: all 0.15s;
  display: flex; align-items: center; justify-content: center;
}
.ipo-stamp-btn:hover, .ipo-stamp-btn.selected { border-color: var(--gold); background: #FAF6EE; transform: scale(1.08); }

/* ── Postcard preview ────────────────────────────────────────── */
.ipo-postcard-preview {
  background: var(--parchment);
  border: 1px solid rgba(44,24,16,0.18);
  border-radius: var(--radius-md);
  overflow: hidden;
  position: relative;
}
.ipo-pc-header {
  background: #F0E4C8;
  border-bottom: 1px solid rgba(44,24,16,0.12);
  padding: 10px 14px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.ipo-pc-postmark { font-family: var(--ff-stamp); font-size: 12px; color: #8B6B3D; }
.ipo-pc-stamp-box {
  width: 42px; height: 52px;
  border: 1px solid var(--gold);
  border-radius: 3px;
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; color: var(--gold);
  background: rgba(255,255,255,0.5);
}
.ipo-pc-body { display: grid; grid-template-columns: 1fr 1px 1fr; }
.ipo-pc-left { padding: 14px; }
.ipo-pc-textarea {
  width: 100%; background: transparent; border: none;
  font-family: var(--ff-serif); font-style: italic;
  font-size: 13px; line-height: 1.7; color: var(--ink);
  resize: none; min-height: 100px;
}
.ipo-pc-textarea:focus { outline: none; }
.ipo-char-count { font-size: 11px; color: var(--muted); text-align: right; margin-top: 4px; font-family: var(--ff-stamp); }
.ipo-pc-divider { background: rgba(44,24,16,0.12); }
.ipo-pc-right { padding: 14px; }
.ipo-pc-to-label, .ipo-pc-from-label { font-family: var(--ff-stamp); font-size: 10px; letter-spacing: 0.12em; color: var(--muted); text-transform: uppercase; margin-bottom: 4px; }
.ipo-pc-from-label { margin-top: 12px; }
.ipo-pc-to-input, .ipo-pc-from-input {
  width: 100%; background: transparent; border: none;
  border-bottom: 1px solid rgba(44,24,16,0.2);
  font-family: var(--ff-stamp); font-size: 13px;
  color: var(--ink); padding: 3px 0; margin-bottom: 8px;
}
.ipo-pc-to-input:focus, .ipo-pc-from-input:focus { outline: none; border-bottom-color: var(--gold); }
.ipo-pc-line { height: 1px; background: rgba(44,24,16,0.1); margin-bottom: 6px; }

/* ── Toggle ─────────────────────────────────────────────────── */
.ipo-toggle-label { display: flex; align-items: center; gap: 8px; font-size: 13px; color: var(--muted); cursor: pointer; }
.ipo-toggle { width: 16px; height: 16px; accent-color: var(--wax); }

/* ── Buttons ─────────────────────────────────────────────────── */
.ipo-btn {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--ff-stamp);
  font-size: 12px;
  letter-spacing: 0.08em;
  padding: 10px 20px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(44,24,16,0.2);
  cursor: pointer;
  transition: all 0.15s;
  text-decoration: none;
}
.ipo-btn--primary { background: var(--ink); color: var(--cream); border-color: var(--ink); }
.ipo-btn--primary:hover { opacity: 0.88; }
.ipo-btn--ghost { background: transparent; color: var(--ink); }
.ipo-btn--ghost:hover { background: var(--parchment); }
.ipo-btn--amber { background: var(--gold); color: #FAF6EE; border-color: var(--gold); }
.ipo-btn--amber:hover { opacity: 0.9; }
.ipo-btn--copy { padding: 6px 12px; font-size: 11px; }

/* ── Result box ─────────────────────────────────────────────── */
.ipo-result { margin-top: 1.25rem; }
.ipo-result-inner {
  background: var(--parchment);
  border: 1px solid rgba(44,24,16,0.15);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}
.ipo-result-label { font-size: 13px; color: var(--muted); margin: 0 0 10px; font-style: italic; }
.ipo-link-box {
  display: flex; align-items: center; gap: 8px;
  background: rgba(255,255,255,0.7);
  border: 1px solid rgba(44,24,16,0.15);
  border-radius: var(--radius-sm);
  padding: 9px 12px;
  margin-bottom: 12px;
}
.ipo-link-text {
  flex: 1; font-family: monospace; font-size: 12px;
  color: var(--ink); overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
}
.ipo-share-row { display: flex; gap: 8px; }
.ipo-share-btn {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--ff-stamp); font-size: 12px;
  padding: 8px 14px; border-radius: var(--radius-sm);
  border: 1px solid rgba(44,24,16,0.2);
  text-decoration: none; color: var(--ink);
  transition: background 0.15s;
}
.ipo-share-btn:hover { background: rgba(44,24,16,0.06); }
.ipo-share-btn--whatsapp::before { content: ''; display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: #25D366; }
.ipo-share-btn--email::before { content: ''; display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: #EA4335; }

.ipo-result-msg {
  margin-top: 10px; padding: 10px 14px;
  background: #EAF3DE; border-radius: var(--radius-sm);
  font-size: 13px; color: #27500A;
}
.ipo-result-msg.error { background: #FAECE7; color: #712B13; }

/* ── Divider ─────────────────────────────────────────────────── */
.ipo-divider-rule {
  display: flex; align-items: center; gap: 12px;
  font-family: var(--ff-stamp); font-size: 10px;
  letter-spacing: 0.15em; text-transform: uppercase;
  color: var(--muted); margin: 2rem 0 1.25rem;
}
.ipo-divider-rule::before, .ipo-divider-rule::after {
  content: ''; flex: 1; height: 1px; background: rgba(44,24,16,0.12);
}

/* ── Compose box (midnight / stranger) ───────────────────────── */
.ipo-compose-box {
  background: var(--parchment);
  border: 1px solid rgba(44,24,16,0.15);
  border-radius: var(--radius-md);
  padding: 1.25rem;
}
.ipo-label--muted { color: var(--muted); }
.ipo-compose-footer {
  display: flex; justify-content: space-between; align-items: center;
  margin-top: 10px; flex-wrap: wrap; gap: 8px;
}
.ipo-anon-note { font-size: 12px; color: var(--muted); font-style: italic; }

/* ── Midnight feed ───────────────────────────────────────────── */
.ipo-midnight-feed { margin-bottom: 1rem; }
.ipo-midnight-note {
  border-left: 3px solid var(--purple);
  background: rgba(83,74,183,0.05);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  padding: 1rem 1.25rem;
  margin-bottom: 12px;
}
.ipo-mn-time {
  font-family: var(--ff-stamp); font-size: 11px;
  color: var(--purple); margin-bottom: 6px; letter-spacing: 0.08em;
}
.ipo-mn-text { font-style: italic; font-size: 14px; line-height: 1.7; color: var(--ink); }
.ipo-mn-footer {
  display: flex; gap: 14px; margin-top: 8px;
  font-size: 12px; color: var(--muted);
}
.ipo-mn-heart { cursor: pointer; transition: color 0.15s; }
.ipo-mn-heart:hover { color: var(--wax); }
.ipo-loading { font-style: italic; color: var(--muted); font-size: 14px; padding: 1rem 0; }

/* ── Stranger card ───────────────────────────────────────────── */
.ipo-stranger-card {
  background: #FAF6EE;
  border: 1px solid var(--gold);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  position: relative;
  margin-bottom: 1.5rem;
}
.ipo-stranger-postmark {
  font-family: var(--ff-stamp); font-size: 11px;
  color: #8B6B3D; margin-bottom: 8px;
}
.ipo-stranger-city {
  font-family: var(--ff-stamp); font-size: 13px;
  color: var(--gold); letter-spacing: 0.08em; margin-bottom: 12px;
}
.ipo-stranger-msg {
  font-style: italic; font-size: 15px; line-height: 1.75;
  color: #4A3728; margin-bottom: 16px;
}
.ipo-stranger-actions { display: flex; gap: 8px; }

/* ═══════════════════════════════════════════════════════════════
   VIEWER STYLES — /l/{hash}/
   ═══════════════════════════════════════════════════════════════ */
.ipo-viewer {
  min-height: 100vh;
  display: flex; flex-direction: column;
  align-items: center; justify-content: center;
  padding: 2rem 1rem;
  background: var(--cream);
}

/* Loading */
.ipo-viewer-loading { text-align: center; color: var(--muted); }
.ipo-loader-envelope {
  font-size: 56px;
  animation: ipo-pulse 1.4s ease-in-out infinite;
  display: block; margin-bottom: 12px;
}
@keyframes ipo-pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.6;transform:scale(0.95)} }

/* Locked capsule */
.ipo-viewer-locked { text-align: center; max-width: 480px; }
.ipo-lock-icon { font-size: 48px; margin-bottom: 16px; }
.ipo-lock-title {
  font-family: var(--ff-display); font-size: 24px;
  font-style: italic; color: var(--ink); margin-bottom: 8px;
}
.ipo-lock-from, .ipo-lock-date { font-size: 14px; color: var(--muted); margin-bottom: 6px; font-style: italic; }
.ipo-lock-countdown {
  font-family: var(--ff-stamp); font-size: 13px;
  letter-spacing: 0.1em; color: var(--ink);
  margin-top: 16px; padding: 12px 20px;
  background: var(--parchment); border-radius: var(--radius-sm);
  border: 1px solid rgba(44,24,16,0.15);
}

/* Envelope stage */
.ipo-envelope-stage { text-align: center; }
.ipo-addressed-to {
  font-family: var(--ff-display); font-size: 18px;
  font-style: italic; color: var(--muted);
  margin-bottom: 24px;
}
.ipo-envelope-wrap {
  width: 320px; height: 220px;
  position: relative; cursor: pointer;
  margin: 0 auto 16px;
  transition: transform 0.2s;
}
.ipo-envelope-wrap:hover { transform: scale(1.02); }
.ipo-env-body {
  width: 320px; height: 200px;
  background: #FAF0E0;
  border: 1.5px solid #C4B898;
  border-radius: 8px;
  position: absolute; bottom: 0; overflow: hidden;
}
.ipo-env-fold--bottom {
  position: absolute; bottom: 0; left: 0; right: 0; height: 110px;
  background: #F5E8CE;
  clip-path: polygon(0 100%, 50% 0, 100% 100%);
}
.ipo-env-fold--left {
  position: absolute; top: 0; left: 0;
  width: 160px; height: 200px;
  background: #F0E2C0;
  clip-path: polygon(0 0, 100% 50%, 0 100%);
}
.ipo-env-fold--right {
  position: absolute; top: 0; right: 0;
  width: 160px; height: 200px;
  background: #EDD9B0;
  clip-path: polygon(100% 0, 0 50%, 100% 100%);
}
.ipo-env-flap {
  width: 320px; height: 110px;
  position: absolute; top: 0;
  background: #F5E8CE;
  border: 1.5px solid #C4B898; border-bottom: none;
  border-radius: 8px 8px 0 0;
  clip-path: polygon(0 0, 100% 0, 50% 100%);
  transform-origin: top center;
  transition: transform 0.65s cubic-bezier(0.4, 0, 0.2, 1);
}
.ipo-env-flap.open { transform: rotateX(180deg); }
.ipo-wax-seal {
  position: absolute; top: 90px; left: 50%;
  transform: translateX(-50%);
  width: 38px; height: 38px;
  background: var(--wax); border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-size: 16px; z-index: 10; color: rgba(255,255,255,0.9);
  box-shadow: 0 2px 8px rgba(139,38,53,0.35);
  transition: opacity 0.3s;
}
.ipo-wax-seal.gone { opacity: 0; pointer-events: none; }
.ipo-open-hint {
  font-family: var(--ff-stamp); font-size: 13px;
  letter-spacing: 0.1em; color: var(--muted);
  margin-top: 8px;
}

/* Letter / postcard view */
.ipo-letter-view { max-width: 620px; width: 100%; animation: ipo-reveal 0.5s ease; }
@keyframes ipo-reveal { from{opacity:0;transform:translateY(16px)} to{opacity:1;transform:translateY(0)} }

.ipo-view-postcard {
  background: var(--parchment);
  border: 1px solid rgba(44,24,16,0.18);
  border-radius: var(--radius-md);
  overflow: hidden; margin-bottom: 1.25rem;
}
.ipo-vpc-header {
  background: #F0E4C8; border-bottom: 1px solid rgba(44,24,16,0.12);
  padding: 10px 14px; display: flex; justify-content: space-between; align-items: center;
}
.ipo-vpc-postmark { font-family: var(--ff-stamp); font-size: 12px; color: #8B6B3D; }
.ipo-vpc-stamp { font-size: 22px; }
.ipo-vpc-body { display: grid; grid-template-columns: 1fr 1px 1fr; }
.ipo-vpc-left { padding: 16px; }
.ipo-vpc-message { font-style: italic; font-size: 14px; line-height: 1.75; color: var(--ink); margin: 0; }
.ipo-vpc-divider { background: rgba(44,24,16,0.1); }
.ipo-vpc-right { padding: 16px; }
.ipo-vpc-to-label, .ipo-vpc-from-label { font-family: var(--ff-stamp); font-size: 10px; letter-spacing: 0.12em; color: var(--muted); text-transform: uppercase; margin-bottom: 3px; }
.ipo-vpc-from-label { margin-top: 12px; }
.ipo-vpc-to-name, .ipo-vpc-from-name { font-family: var(--ff-stamp); font-size: 13px; color: var(--ink); }

.ipo-letter-paper {
  background: #FFFDF8;
  border: 1px solid rgba(44,24,16,0.15);
  border-radius: var(--radius-md);
  padding: 2rem;
  position: relative;
  margin-bottom: 1.25rem;
  line-height: 1.9;
  background-image: repeating-linear-gradient(transparent, transparent 27px, rgba(44,24,16,0.06) 27px, rgba(44,24,16,0.06) 28px);
  background-position: 0 32px;
}
.ipo-letter-header { display: flex; justify-content: space-between; margin-bottom: 24px; }
.ipo-letter-stamp { font-size: 24px; }
.ipo-letter-postmark { font-family: var(--ff-stamp); font-size: 11px; color: var(--muted); text-align: right; line-height: 1.5; }
.ipo-letter-salutation { font-family: var(--ff-display); font-size: 15px; font-style: italic; color: var(--muted); margin-bottom: 16px; }
.ipo-letter-body { font-size: 15px; line-height: 1.9; color: var(--ink); white-space: pre-line; }
.ipo-letter-sign { font-family: var(--ff-display); font-style: italic; font-size: 15px; text-align: right; color: var(--muted); margin-top: 20px; }

.ipo-letter-actions { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 1rem; }
.ipo-reply-box {
  background: var(--parchment); border-radius: var(--radius-md);
  border: 1px solid rgba(44,24,16,0.13); padding: 1.25rem;
  text-align: center;
}
.ipo-reply-hint { font-style: italic; color: var(--muted); font-size: 14px; margin-bottom: 12px; }

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 560px) {
  .ipo-pc-body { grid-template-columns: 1fr; }
  .ipo-pc-divider { display: none; }
  .ipo-vpc-body { grid-template-columns: 1fr; }
  .ipo-vpc-divider { display: none; }
  .ipo-envelope-wrap { width: 280px; }
  .ipo-env-body { width: 280px; }
  .ipo-env-flap { width: 280px; }
  .ipo-env-fold--left, .ipo-env-fold--right { width: 140px; }
}