@import url('https://fonts.googleapis.com/css2?family=IM+Fell+English:ital@0;1&display=swap');

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:      #f7f3ea;
  --surface: #f0ebe0;
  --border:  #c8bfa8;
  --dim:     #a89880;
  --mid:     #6a5c48;
  --text:    #2c2418;
  --accent:  #4a6a30;
  --green:   #3a6020;
  --red:     #8a2020;
  --mono:    'Courier New', 'Lucida Console', monospace;
  --serif:   'IM Fell English', Georgia, serif;
}

/* ── Dark mode ── */
[data-theme="dark"] {
  --bg:      #0f0f0f;
  --surface: #161616;
  --border:  #2a2a2a;
  --dim:     #3d3d3d;
  --mid:     #888;
  --text:    #d4d0c8;
  --accent:  #7aaa50;
  --green:   #5a9a40;
  --red:     #aa5050;
}

html, body {
  min-height: 100%;
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100dvh;
  padding-bottom: env(safe-area-inset-bottom);
}

/* subtle paper grain */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image:
    repeating-linear-gradient(
      0deg,
      transparent,
      transparent 3px,
      rgba(0,0,0,0.012) 3px,
      rgba(0,0,0,0.012) 4px
    );
}

.app {
  max-width: 580px;
  margin: 0 auto;
  padding: 0 1.25rem 5rem;
  position: relative;
  z-index: 1;
}

/* ── Header ── */
.header {
  padding-top: 2.75rem;
  margin-bottom: 2rem;
}
.header-frog {
  font-size: 11px;
  line-height: 1.3;
  color: var(--accent);
  white-space: pre;
  margin-bottom: 0.75rem;
  opacity: 0.75;
}
.header-ascii {
  font-size: 10.5px;
  line-height: 1.35;
  color: var(--text);
  white-space: pre;
  overflow-x: auto;
  letter-spacing: 0;
}
.header-meta {
  margin-top: 0.85rem;
  padding-top: 0.65rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 11px;
}
.header-meta .comment { color: var(--mid); }
.header-meta .version { color: var(--dim); }

/* ── Ko-fi ── */
.kofi-line {
  font-size: 11px;
  color: var(--dim);
  margin-bottom: 1.75rem;
}
.kofi-line a {
  color: var(--mid);
  text-decoration: none;
  transition: color 0.1s;
}
.kofi-line a:hover { color: var(--accent); }

/* ── Mode tabs ── */
.tabs {
  display: flex;
  border: 1px solid var(--border);
  margin-bottom: 1.5rem;
}
.tab {
  flex: 1;
  padding: 0.55rem 0.75rem;
  background: transparent;
  border: none;
  border-right: 1px solid var(--border);
  color: var(--dim);
  font-family: var(--mono);
  font-size: 12px;
  cursor: pointer;
  text-align: left;
  transition: color 0.1s, background 0.1s;
}
.tab:last-child { border-right: none; }
.tab.active { background: var(--surface); color: var(--accent); }

/* ── File boxes ── */
.file-box {
  border: 1px solid var(--border);
  background: var(--surface);
  margin-bottom: 1.25rem;
}
.file-bar {
  padding: 0.35rem 0.75rem;
  border-bottom: 1px solid var(--border);
  font-size: 11px;
  color: var(--dim);
  display: flex;
  justify-content: space-between;
  align-items: center;
  user-select: none;
  background: rgba(0,0,0,0.02);
}
.file-bar .status-ok  { color: var(--green); }
.file-bar .status-err { color: var(--red); }

.file-box textarea {
  width: 100%;
  background: transparent;
  border: none;
  color: var(--text);
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.8;
  padding: 0.75rem;
  resize: none;
  outline: none;
  caret-color: var(--accent);
}
.file-box textarea::placeholder { color: var(--dim); }

/* ── Dropzone ── */
.dropzone {
  padding: 2.5rem 1rem;
  text-align: center;
  cursor: pointer;
  position: relative;
  transition: background 0.1s;
}
.dropzone:hover, .dropzone.drag-over { background: rgba(0,0,0,0.02); }
.dropzone input[type="file"] {
  position: absolute; inset: 0;
  opacity: 0; cursor: pointer;
  width: 100%; height: 100%;
}
.dropzone-icon { font-size: 14px; margin-bottom: 0.5rem; opacity: 0.4; }
.dropzone p { font-size: 12px; color: var(--mid); }
.dropzone small { font-size: 11px; color: var(--dim); margin-top: 4px; display: block; }

.preview-wrap { position: relative; }
.preview-wrap img {
  width: 100%; display: block;
  max-height: 280px; object-fit: cover; object-position: top;
  opacity: 0.9;
}
.preview-clear {
  position: absolute; top: 8px; right: 8px;
  background: var(--bg); border: 1px solid var(--border);
  color: var(--mid); font-family: var(--mono);
  font-size: 11px; padding: 3px 8px; cursor: pointer;
}

/* ── Tone ── */
.tone-row {
  display: flex;
  border: 1px solid var(--border);
  margin-bottom: 1.25rem;
}
.tone-label {
  padding: 0.5rem 0.75rem;
  border-right: 1px solid var(--border);
  font-size: 12px;
  color: var(--dim);
  white-space: nowrap;
  user-select: none;
}
.tone-btn {
  flex: 1; padding: 0.5rem 0.5rem;
  background: transparent; border: none;
  border-right: 1px solid var(--border);
  color: var(--dim); font-family: var(--mono);
  font-size: 12px; cursor: pointer;
  transition: color 0.1s, background 0.1s;
}
.tone-btn:last-child { border-right: none; }
.tone-btn.active { background: var(--surface); color: var(--accent); }

/* ── Convert button ── */
.convert-btn {
  width: 100%; padding: 0.75rem;
  background: transparent;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: var(--mono); font-size: 13px;
  cursor: pointer; letter-spacing: 0.06em;
  transition: background 0.1s;
  margin-bottom: 2rem;
}
.convert-btn:hover:not(:disabled) { background: rgba(74,106,48,0.06); }
.convert-btn:disabled { border-color: var(--border); color: var(--dim); cursor: not-allowed; }

/* ── Loading ── */
.loading {
  text-align: center; padding: 1.5rem 0 2rem;
  font-size: 12px; color: var(--dim); letter-spacing: 0.1em;
}
@keyframes blink { 0%,49%{opacity:1} 50%,100%{opacity:0} }
.cursor {
  display: inline-block; width: 7px; height: 12px;
  background: var(--accent); vertical-align: middle;
  margin-left: 4px; animation: blink 0.8s step-end infinite;
}

/* ── Error ── */
.error-msg {
  font-size: 12px; color: var(--red);
  padding: 0.75rem; border: 1px solid var(--red);
  margin-bottom: 1rem;
}
.error-msg::before { content: "err: "; opacity: 0.6; }

/* ── Haiku cards ── */
.haiku-list { display: flex; flex-direction: column; }

.haiku-card {
  border: 1px solid var(--border);
  border-bottom: none;
  background: var(--surface);
  opacity: 0; transform: translateY(6px);
  transition: opacity 0.35s ease, transform 0.35s ease;
}
.haiku-card:last-of-type { border-bottom: 1px solid var(--border); }
.haiku-card.visible { opacity: 1; transform: translateY(0); }

.haiku-source-bar {
  padding: 0.35rem 0.75rem;
  border-bottom: 1px solid var(--border);
  font-size: 10px; color: var(--dim);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
  background: rgba(0,0,0,0.02);
}
.haiku-source-bar::before { content: "// "; }

.haiku-body { padding: 1.25rem 0.75rem 1rem; }

.haiku-line-row {
  display: flex; gap: 1rem;
  align-items: baseline; margin-bottom: 0.3rem;
}
.haiku-line-num { font-size: 11px; color: var(--dim); width: 14px; flex-shrink: 0; user-select: none; }
.haiku-line-text {
  font-family: var(--serif); font-style: italic;
  font-size: 22px; color: var(--text);
  line-height: 1.5; letter-spacing: 0.01em;
}

.haiku-footer {
  margin-top: 1rem; padding-top: 0.75rem;
  border-top: 1px solid var(--border);
}
.syl-bars {
  display: flex; gap: 1.25rem;
  margin-bottom: 0.75rem;
  font-size: 11px; letter-spacing: 2px; color: var(--border);
}
.syl-bar-filled { color: var(--accent); }

.card-actions {
  display: flex; border: 1px solid var(--border);
}
.action-btn {
  flex: 1; padding: 0.45rem 0.5rem;
  background: transparent; border: none;
  border-right: 1px solid var(--border);
  color: var(--mid); font-family: var(--mono);
  font-size: 11px; cursor: pointer;
  text-align: center;
  transition: color 0.1s, background 0.1s;
  white-space: nowrap;
}
.action-btn:last-child { border-right: none; }
.action-btn:hover { color: var(--accent); background: rgba(74,106,48,0.04); }
.action-btn.ok { color: var(--green); }

/* ── Regen ── */
.regen-btn {
  width: 100%; padding: 0.55rem;
  background: transparent;
  border: 1px solid var(--border); border-top: none;
  color: var(--dim); font-family: var(--mono);
  font-size: 11px; cursor: pointer; letter-spacing: 0.06em;
  transition: color 0.1s; margin-bottom: 2rem;
}
.regen-btn:hover { color: var(--mid); }

/* ── History ── */
.history-section { margin-top: 2.5rem; }
.history-header {
  display: flex; justify-content: space-between; align-items: center;
  font-size: 11px; padding: 0.35rem 0.75rem;
  border: 1px solid var(--border); border-bottom: none;
  background: rgba(0,0,0,0.02);
}
.history-comment { color: var(--dim); }
.history-clear {
  background: none; border: none; color: var(--dim);
  font-size: 11px; font-family: var(--mono);
  cursor: pointer; padding: 0; transition: color 0.1s;
}
.history-clear:hover { color: var(--red); }

.history-item {
  border: 1px solid var(--border); border-bottom: none;
  padding: 0.6rem 0.75rem;
  display: flex; justify-content: space-between;
  align-items: center; gap: 1rem;
  cursor: pointer; transition: background 0.1s;
}
.history-item:last-child { border-bottom: 1px solid var(--border); }
.history-item:hover { background: var(--surface); }

.history-lines {
  font-family: var(--serif); font-style: italic;
  font-size: 12px; color: var(--mid);
  line-height: 1.5; flex: 1; min-width: 0;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.history-date { font-size: 10px; color: var(--dim); white-space: nowrap; }

/* ── Hidden ── */
.hidden { display: none !important; }

/* ── Dark mode toggle ── */
.theme-toggle {
  position: fixed;
  top: 1rem;
  right: 1.25rem;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--dim);
  font-family: var(--mono);
  font-size: 11px;
  padding: 0.3rem 0.6rem;
  cursor: pointer;
  z-index: 100;
  transition: color 0.1s, border-color 0.1s;
}
.theme-toggle:hover { color: var(--accent); border-color: var(--accent); }