/* Mustard & Milk — Web Nonsense Generator */

:root {
  --bg: #000000;
  --fg: #ffffff;
  --fg-dim: #888888;
  --fg-ghost: #333333;
  --border: #ffffff;
  --font: Helvetica, Arial, sans-serif;
}

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

html, body {
  height: 100%;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font);
  overflow: hidden;
}

/* ── Header ─────────────────────────────────── */

header {
  padding: 18px 24px 14px;
  display: flex;
  align-items: baseline;
  gap: 16px;
}

.title-link {
  font-size: 40px;
  font-weight: bold;
  color: var(--fg);
  text-decoration: none;
  cursor: pointer;
  letter-spacing: 0.5px;
}
.title-link:hover { color: var(--fg-dim); }

.subtitle {
  font-size: 18px;
  color: var(--fg-dim);
  letter-spacing: 1px;
}

.header-sep {
  height: 1px;
  background: var(--fg-ghost);
  border: none;
}

/* ── Main Layout ────────────────────────────── */

.main {
  display: flex;
  height: calc(100vh - 75px);
}

.left-panel {
  width: 400px;
  min-width: 400px;
  padding: 20px 24px;
  display: flex;
  flex-direction: column;
  overflow-y: auto;
}

.vsep {
  width: 1px;
  background: var(--fg-ghost);
}

.right-panel {
  flex: 1;
  overflow-y: auto;
  padding: 24px 30px;
}

/* ── Section Labels ─────────────────────────── */

.section-label {
  display: block;
  font-size: 16px;
  color: var(--fg-dim);
  margin-bottom: 10px;
  letter-spacing: 1px;
}

/* ── Style Buttons ──────────────────────────── */

.style-buttons {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
}

.style-btn {
  border: 2px solid var(--fg-ghost);
  background: transparent;
  color: var(--fg);
  padding: 10px 14px;
  cursor: pointer;
  text-align: left;
  transition: border-color 0.15s;
}
.style-btn:hover {
  border-color: var(--fg-dim);
}
.style-btn.selected {
  border-color: var(--fg);
}
.style-btn .style-name {
  font-size: 22px;
  font-weight: bold;
  margin-bottom: 2px;
}
.style-btn .style-desc {
  font-size: 16px;
  color: var(--fg-dim);
}

/* ── Count Slider ───────────────────────────── */

.count-row {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 20px;
}

input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  flex: 1;
  height: 4px;
  background: var(--fg-ghost);
  border-radius: 2px;
  outline: none;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--fg);
  cursor: pointer;
}
input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--fg);
  cursor: pointer;
  border: none;
}

.count-display {
  font-size: 32px;
  font-weight: bold;
  color: var(--fg);
  min-width: 40px;
  text-align: center;
}

/* ── Primary Buttons ────────────────────────── */

.btn-generate {
  width: 100%;
  padding: 14px 20px;
  font-size: 24px;
  font-weight: bold;
  font-family: var(--font);
  background: var(--fg);
  color: var(--bg);
  border: none;
  cursor: pointer;
  letter-spacing: 1px;
  transition: opacity 0.15s;
  margin-bottom: 8px;
}
.btn-generate:hover { opacity: 0.85; }
.btn-generate:disabled {
  opacity: 0.4;
  cursor: default;
}

.btn-clear {
  width: 100%;
  padding: 10px 20px;
  font-size: 16px;
  font-family: var(--font);
  background: transparent;
  color: var(--fg-dim);
  border: 2px solid var(--fg-ghost);
  cursor: pointer;
  letter-spacing: 1px;
  display: none;
}
.btn-clear:hover {
  border-color: var(--fg-dim);
  color: var(--fg);
}

/* ── Bottom Controls (spacer + About) ───────── */

.left-spacer { flex: 1; }

.left-bottom {
  padding-top: 16px;
  border-top: 1px solid var(--fg-ghost);
}

.btn-about {
  width: 100%;
  padding: 14px 20px;
  font-size: 16px;
  font-weight: bold;
  font-family: var(--font);
  background: var(--fg);
  color: var(--bg);
  border: none;
  cursor: pointer;
  letter-spacing: 1px;
  transition: opacity 0.15s;
}
.btn-about:hover { opacity: 0.85; }

/* ── Output Area ────────────────────────────── */

.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
}
.empty-title {
  font-size: 28px;
  color: var(--fg-ghost);
  margin-bottom: 12px;
}
.empty-teaser {
  font-size: 18px;
  color: var(--fg-ghost);
  max-width: 500px;
  line-height: 1.4;
}

.output-item {
  margin-bottom: 4px;
}
.output-separator {
  color: var(--fg-ghost);
  font-size: 8px;
  margin: 12px 0;
  letter-spacing: 2px;
}
.output-style-label {
  font-size: 16px;
  color: var(--fg-dim);
  margin-bottom: 4px;
  padding-left: 4px;
}
.output-text {
  font-size: 24px;
  color: var(--fg);
  line-height: 1.4;
  padding: 4px;
  cursor: pointer;
  transition: color 0.15s;
}
.output-text:hover { color: var(--fg-dim); }
.output-text.copied {
  color: var(--fg-dim);
}

/* ── Loading ────────────────────────────────── */

.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  font-size: 20px;
  color: var(--fg-ghost);
}

/* ── About Section ──────────────────────────── */

#about-content { display: none; }

.about-heading {
  font-size: 32px;
  font-weight: bold;
  color: var(--fg);
  margin: 24px 0 8px;
}
.about-subheading {
  font-size: 20px;
  font-weight: bold;
  color: var(--fg);
  margin: 20px 0 4px;
}
.about-body {
  font-size: 18px;
  color: var(--fg-dim);
  line-height: 1.5;
  margin: 2px 0 6px 4px;
}
.about-quote {
  font-size: 20px;
  color: var(--fg);
  line-height: 1.5;
  margin: 10px 0 10px 30px;
}
.about-stat-label {
  font-size: 16px;
  color: var(--fg-ghost);
  margin: 2px 0;
}
.about-stat-value {
  font-size: 18px;
  font-weight: bold;
  color: var(--fg);
}
.about-stat-row {
  margin: 2px 0 2px 8px;
}
.about-link {
  font-size: 18px;
  font-weight: bold;
  color: var(--fg);
  text-decoration: underline;
  cursor: pointer;
}
.about-link:hover { color: var(--fg-dim); }
.about-divider {
  color: var(--fg-ghost);
  font-size: 8px;
  margin: 10px 0;
}
.about-bar-full {
  font-size: 14px;
  color: var(--fg);
  letter-spacing: -1px;
}
.about-bar-empty {
  font-size: 14px;
  color: var(--fg-ghost);
  letter-spacing: -1px;
}

/* ── Chat Section ───────────────────────────── */

.chat-speaker {
  font-size: 16px;
  font-weight: bold;
  color: var(--fg);
  margin: 16px 0 4px;
}
.chat-section {
  font-size: 16px;
  font-weight: bold;
  color: var(--fg);
  margin: 12px 0 4px 20px;
}
.chat-body {
  font-size: 16px;
  color: var(--fg-dim);
  line-height: 1.5;
  margin: 2px 0 4px 20px;
}

/* ── Domain Bar Row ─────────────────────────── */

.domain-row {
  margin-bottom: 12px;
  margin-left: 8px;
}
.domain-name {
  font-size: 18px;
  font-weight: bold;
  color: var(--fg);
  margin-bottom: 2px;
}
.domain-examples {
  font-size: 16px;
  color: var(--fg-ghost);
  margin-top: 2px;
}

/* Chapter row */
.chapter-row {
  margin: 2px 0 2px 8px;
  font-size: 14px;
  white-space: nowrap;
}
.chapter-label {
  display: inline-block;
  width: 50px;
  text-align: right;
  color: var(--fg-ghost);
  margin-right: 8px;
}
.chapter-pct {
  color: var(--fg-ghost);
  margin-left: 8px;
}

/* Sentence structure row */
.struct-row {
  margin: 4px 0 4px 8px;
}
.struct-label {
  font-size: 16px;
  color: var(--fg-ghost);
  margin-bottom: 2px;
}

/* ── Chat Mode ─────────────────────────────── */

.chat-history {
  flex: 1;
  overflow-y: auto;
  padding-bottom: 16px;
}

.chat-welcome {
  font-size: 20px;
  color: var(--fg-ghost);
  text-align: center;
  padding: 60px 20px;
  line-height: 1.5;
}

.chat-bubble {
  margin-bottom: 12px;
  padding: 10px 14px;
  line-height: 1.5;
  max-width: 85%;
}

.chat-user {
  font-size: 16px;
  color: var(--fg-dim);
  border-left: 3px solid var(--fg-ghost);
  padding-left: 12px;
  margin-left: 0;
}

.chat-machine {
  font-size: 22px;
  color: var(--fg);
  cursor: pointer;
  transition: color 0.15s;
}
.chat-machine:hover { color: var(--fg-dim); }
.chat-machine.copied { color: var(--fg-dim); }

.chat-input-row {
  display: flex;
  gap: 0;
  border-top: 1px solid var(--fg-ghost);
  padding-top: 12px;
  flex-shrink: 0;
}

.chat-input {
  flex: 1;
  background: transparent;
  border: 2px solid var(--fg-ghost);
  color: var(--fg);
  font-family: var(--font);
  font-size: 18px;
  padding: 12px 16px;
  outline: none;
  transition: border-color 0.15s;
}
.chat-input:focus { border-color: var(--fg-dim); }
.chat-input::placeholder { color: var(--fg-ghost); }

.chat-send {
  background: var(--fg);
  color: var(--bg);
  border: none;
  font-family: var(--font);
  font-size: 16px;
  font-weight: bold;
  padding: 12px 24px;
  cursor: pointer;
  letter-spacing: 1px;
  transition: opacity 0.15s;
}
.chat-send:hover { opacity: 0.85; }

/* Make right panel flex column when chat is active */
.right-panel:has(.chat-history) {
  display: flex;
  flex-direction: column;
}

/* Mobile chat container (hidden by default, shown inline in left panel) */
.mobile-chat {
  display: none;
}

/* ── Responsive ─────────────────────────────── */

/* iPad / Tablet portrait (769px–1024px) */
@media (min-width: 769px) and (max-width: 1024px) {
  .left-panel {
    width: 320px;
    min-width: 320px;
    padding: 16px 18px;
  }
  .left-spacer { flex: 0; }
  .left-bottom { padding-top: 12px; }
  .style-btn .style-name { font-size: 18px; }
  .style-btn .style-desc { font-size: 14px; }
  .style-btn { padding: 8px 12px; }
  .style-buttons { gap: 4px; margin-bottom: 14px; }
  .count-row { margin-bottom: 14px; }
  .count-display { font-size: 26px; }
  .btn-generate { font-size: 20px; padding: 12px 16px; }
  .btn-about { font-size: 14px; padding: 12px 16px; }
  .section-label { font-size: 14px; margin-bottom: 8px; }
  .right-panel { padding: 20px 22px; }
  .title-link { font-size: 32px; }
  .subtitle { font-size: 15px; }
}

/* iPad landscape / short viewport (wide but ≤ 850px tall) */
@media (min-width: 1025px) and (max-height: 850px) {
  header { padding: 12px 24px 10px; }
  .main { height: calc(100vh - 60px); }
  .left-panel { padding: 12px 20px; }
  .left-spacer { flex: 0; }
  .left-bottom { padding-top: 8px; }
  .section-label { font-size: 14px; margin-bottom: 4px; }
  .style-btn { padding: 5px 10px; }
  .style-btn .style-name { font-size: 17px; }
  .style-btn .style-desc { font-size: 13px; }
  .style-buttons { gap: 3px; margin-bottom: 10px; }
  .count-row { margin-bottom: 10px; }
  .count-display { font-size: 24px; }
  .btn-generate { font-size: 20px; padding: 10px 14px; margin-bottom: 6px; }
  .btn-clear { padding: 8px 14px; font-size: 14px; }
  .btn-about { font-size: 14px; padding: 10px 14px; }
}

/* Phone (≤768px) */
@media (max-width: 768px) {
  .main {
    flex-direction: column;
    height: auto;
  }
  html, body {
    overflow: auto;
  }
  .left-panel {
    width: 100%;
    min-width: 0;
    padding: 16px;
  }
  .vsep { display: none; }
  .right-panel {
    padding: 16px;
    min-height: 60vh;
  }
  .title-link { font-size: 28px; }
  .subtitle { font-size: 14px; }
  .output-text { font-size: 18px; }
  .left-spacer { display: none; }
  .chat-machine { font-size: 18px; }
  .chat-input { font-size: 16px; padding: 10px 12px; }
  .chat-send { padding: 10px 16px; font-size: 14px; }
  .mobile-chat { margin-top: 12px; }
  .mobile-chat .chat-history {
    max-height: 50vh;
    overflow-y: auto;
  }
  .mobile-chat .chat-welcome {
    font-size: 16px;
    padding: 20px 10px;
  }
}