/* ========================================
   Light Spring palette
   Warm ivory base, coral & peach accents,
   fresh spring green, golden warmth
   ======================================== */

:root {
  --bg: #fdf8f3;
  --surface: #ffffff;
  --border: #f0e0d0;
  --text: #4a3728;
  --text-muted: #9c8575;
  --coral: #e8735a;
  --coral-light: #fceae5;
  --coral-glow: rgba(232, 115, 90, 0.3);
  --peach: #f5a67b;
  --spring: #6bb578;
  --spring-light: #e6f4e8;
  --spring-glow: rgba(107, 181, 120, 0.3);
  --gold: #d4a44a;
  --danger: #d9534f;
  --shadow: rgba(74, 55, 40, 0.06);
}

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

/* Hide everything until auth state is known */
#app.loading > * {
  visibility: hidden;
}

#app.loading {
  background: var(--bg);
}

/* ---- PIN overlay ---- */
#pin-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
}

#pin-overlay.hidden {
  display: none;
}

#pin-box {
  text-align: center;
  padding: 32px 24px;
  max-width: 340px;
  width: 100%;
}

#pin-box h2 {
  font-size: 1.3rem;
  margin-bottom: 10px;
  color: var(--text);
}

#pin-input {
  width: 100%;
  padding: 14px 16px;
  border-radius: 12px;
  border: 2px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font-size: 1rem;
  outline: none;
  margin-bottom: 12px;
}

#pin-input:focus {
  border-color: var(--coral);
}

#pin-submit {
  width: 100%;
  padding: 14px;
  border-radius: 12px;
  border: none;
  background: var(--coral);
  color: #fff;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
}

#pin-submit:hover {
  background: #d4654d;
}

#pin-error {
  color: var(--danger);
  font-size: 0.85rem;
  margin-top: 10px;
  min-height: 1.2em;
}

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
  -webkit-tap-highlight-color: transparent;
}

#app {
  display: flex;
  flex-direction: column;
  height: 100%;
  max-width: 480px;
  margin: 0 auto;
  padding-top: env(safe-area-inset-top);
  padding-bottom: env(safe-area-inset-bottom);
}

/* ---- Header ---- */
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  flex-shrink: 0;
  border-bottom: 1px solid var(--border);
}

header h1 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--coral);
  letter-spacing: -0.01em;
}

#header-right {
  display: flex;
  gap: 4px;
}

#btn-sessions,
#btn-new,
#btn-logout {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px;
  border-radius: 8px;
  transition: all 0.15s;
}

#btn-sessions:hover,
#btn-new:hover {
  background: var(--coral-light);
  color: var(--coral);
}

#btn-logout:hover {
  color: var(--danger);
}

/* ---- Session list ---- */
#session-list {
  flex: 1;
  overflow-y: auto;
  padding: 12px 16px 16px;
}

#session-list.hidden {
  display: none;
}

#session-items {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.session-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--surface);
  border-radius: 12px;
  padding: 14px 16px;
  cursor: pointer;
  border: 1px solid var(--border);
  box-shadow: 0 1px 3px var(--shadow);
  transition: all 0.15s;
}

.session-item:hover,
.session-item.active {
  border-color: var(--coral);
  box-shadow: 0 2px 8px var(--coral-glow);
}

.session-info {
  flex: 1;
  min-width: 0;
}

.session-date {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text);
}

.session-preview {
  font-size: 0.75rem;
  color: var(--text-muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin-top: 2px;
}

.session-count {
  font-size: 0.7rem;
  color: var(--text-muted);
  background: var(--bg);
  padding: 3px 8px;
  border-radius: 10px;
  margin-left: 10px;
  flex-shrink: 0;
}

.session-delete {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px 8px;
  margin-left: 6px;
  opacity: 0.5;
  font-size: 0.8rem;
}

.session-delete:hover {
  color: var(--danger);
  opacity: 1;
}

.no-sessions {
  text-align: center;
  color: var(--text-muted);
  padding: 40px 0;
  font-size: 0.9rem;
}

/* ---- Conversation ---- */
#conversation {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
  padding: 0 16px;
}

#conversation.hidden {
  display: none;
}

#history {
  flex: 1;
  overflow-y: auto;
  padding: 12px 0 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.entry {
  background: var(--surface);
  border-radius: 12px;
  padding: 12px 14px;
  border-left: 3px solid var(--coral);
  position: relative;
  box-shadow: 0 1px 3px var(--shadow);
}

.entry-actions {
  display: flex;
  position: absolute;
  top: 8px;
  right: 8px;
  gap: 4px;
  opacity: 0.4;
  transition: opacity 0.15s;
}

.entry:hover .entry-actions {
  opacity: 1;
}

.entry-btn {
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text-muted);
  width: 28px;
  height: 28px;
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.7rem;
  padding: 0;
  transition: all 0.15s;
}

.entry-btn:hover {
  border-color: var(--text-muted);
  color: var(--text);
}

.entry-btn.delete:hover {
  border-color: var(--danger);
  color: var(--danger);
}

.entry .edit-input {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--coral);
  color: var(--text);
  border-radius: 8px;
  padding: 8px;
  font-size: 0.95rem;
  font-family: inherit;
  resize: vertical;
  min-height: 40px;
  outline: none;
}

.entry .edit-bar {
  display: flex;
  gap: 6px;
  margin-top: 6px;
}

.entry .edit-bar button {
  padding: 4px 12px;
  border-radius: 6px;
  border: none;
  font-size: 0.8rem;
  cursor: pointer;
}

.entry .edit-bar .save-btn {
  background: var(--coral);
  color: #fff;
}

.entry .edit-bar .cancel-btn {
  background: var(--border);
  color: var(--text-muted);
}

.entry .label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--coral);
  margin-bottom: 3px;
  letter-spacing: 0.04em;
}

.entry .text {
  font-size: 0.95rem;
  line-height: 1.45;
  color: var(--text);
}

.entry.translated {
  border-left-color: var(--spring);
}

.entry.translated .label {
  color: var(--spring);
}

.entry.error {
  border-left-color: var(--danger);
}

.entry.error .label {
  color: var(--danger);
}

/* ---- Push-to-talk area ---- */
#ptt-area {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 14px 0 12px;
  gap: 10px;
  border-top: 1px solid var(--border);
}

#buttons {
  display: flex;
  gap: 24px;
}

.ptt {
  width: 110px;
  height: 110px;
  border-radius: 50%;
  border: 3px solid var(--border);
  background: var(--surface);
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  cursor: pointer;
  transition: all 0.2s;
  box-shadow: 0 2px 8px var(--shadow);

  touch-action: none;
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  user-select: none;
}

/* EN button — warm coral */
.ptt[data-mode="en-to-ru"] {
  border-color: var(--coral);
  color: var(--coral);
}

.ptt[data-mode="en-to-ru"]:active,
.ptt[data-mode="en-to-ru"].recording {
  background: var(--coral);
  color: #fff;
  box-shadow: 0 0 40px var(--coral-glow);
  transform: scale(1.08);
}

/* RU button — spring green */
.ptt[data-mode="ru-to-en"] {
  border-color: var(--spring);
  color: var(--spring);
}

.ptt[data-mode="ru-to-en"]:active,
.ptt[data-mode="ru-to-en"].recording {
  background: var(--spring);
  color: #fff;
  box-shadow: 0 0 40px var(--spring-glow);
  transform: scale(1.08);
}

.ptt.processing {
  opacity: 0.4;
  pointer-events: none;
}

.ptt-lang {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.05em;
}

.ptt-label {
  font-size: 0.55rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  opacity: 0.7;
}

#status {
  font-size: 0.8rem;
  color: var(--text-muted);
  min-height: 1.2em;
  text-align: center;
}

/* ---- Pulse ---- */
@keyframes pulse-coral {
  0%, 100% { box-shadow: 0 0 0 0 var(--coral-glow); }
  50%      { box-shadow: 0 0 0 18px transparent; }
}

@keyframes pulse-spring {
  0%, 100% { box-shadow: 0 0 0 0 var(--spring-glow); }
  50%      { box-shadow: 0 0 0 18px transparent; }
}

.ptt[data-mode="en-to-ru"].recording {
  animation: pulse-coral 1.2s ease-in-out infinite;
}

.ptt[data-mode="ru-to-en"].recording {
  animation: pulse-spring 1.2s ease-in-out infinite;
}

/* ---- Confirm modal ---- */
#modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(74, 55, 40, 0.3);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

#modal-overlay.hidden {
  display: none;
}

#modal-box {
  background: var(--surface);
  border-radius: 16px;
  padding: 28px 24px 20px;
  max-width: 320px;
  width: 100%;
  box-shadow: 0 8px 32px rgba(74, 55, 40, 0.15);
  text-align: center;
}

#modal-message {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 20px;
  line-height: 1.5;
}

#modal-buttons {
  display: flex;
  gap: 10px;
}

#modal-cancel,
#modal-confirm {
  flex: 1;
  padding: 12px;
  border-radius: 10px;
  border: none;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
}

#modal-cancel {
  background: var(--bg);
  color: var(--text-muted);
  border: 1px solid var(--border);
}

#modal-cancel:hover {
  background: var(--border);
}

#modal-confirm {
  background: var(--danger);
  color: #fff;
}

#modal-confirm:hover {
  background: #c0433f;
}

#modal-confirm.safe {
  background: var(--coral);
}

#modal-confirm.safe:hover {
  background: #d4654d;
}

/* ---- Scrollbar ---- */
#history::-webkit-scrollbar,
#session-list::-webkit-scrollbar {
  width: 4px;
}
#history::-webkit-scrollbar-track,
#session-list::-webkit-scrollbar-track {
  background: transparent;
}
#history::-webkit-scrollbar-thumb,
#session-list::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 2px;
}