/* Igbo Keyboard — Mobile-first design */

:root {
  --color-primary: #1B6B3A;
  --color-primary-light: #2D8F50;
  --color-primary-dark: #0F4D28;
  --color-accent: #C45B28;
  --color-accent-light: #E07A45;
  --color-bg: #FAF7F2;
  --color-bg-keyboard: #EDEBE6;
  --color-surface: #FFFFFF;
  --color-text: #1A1A1A;
  --color-text-muted: #6B6560;
  --color-key-bg: #FFFFFF;
  --color-key-shadow: #D4D0CA;
  --color-key-active: #E07A45;
  --color-special-key: #2D8F50;
  --color-online: #2D8F50;
  --color-offline: #D4A017;
  --color-checking: #888;
  --font-body: "DM Sans", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-display: "Bricolage Grotesque", var(--font-body);
  --radius: 10px;
  --radius-sm: 6px;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
}

html, body {
  height: 100%;
  overflow: hidden;
}

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  display: flex;
  flex-direction: column;
}

/* --- App Bar --- */
.app-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 16px;
  background: var(--color-primary);
  color: white;
  flex-shrink: 0;
}

.app-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.02em;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  opacity: 0.9;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-checking);
}

.status-dot.online { background: #6FE88B; }
.status-dot.offline { background: var(--color-offline); }
.status-dot.checking { background: var(--color-checking); animation: pulse 1.5s infinite; }

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

/* --- Text Area --- */
.text-section {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: 12px;
  min-height: 0;
  position: relative;
}

#text-input {
  flex: 1;
  width: 100%;
  border: 2px solid #E0DCD6;
  border-radius: var(--radius);
  padding: 12px;
  font-family: var(--font-body);
  font-size: 18px;
  line-height: 1.5;
  resize: none;
  background: var(--color-surface);
  color: var(--color-text);
  outline: none;
  transition: border-color 0.2s;
}

#text-input:focus {
  border-color: var(--color-primary);
}

#text-input::placeholder {
  color: var(--color-text-muted);
}

.text-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 8px;
  gap: 8px;
}

.char-count {
  font-size: 12px;
  color: var(--color-text-muted);
}

.text-actions {
  display: flex;
  gap: 6px;
}

.btn-small {
  padding: 6px 14px;
  border: 1px solid #D4D0CA;
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s;
}

.btn-small:active {
  background: #F0EDEA;
  transform: scale(0.96);
}

.btn-small.copied {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

/* --- Diacritize Button --- */
.diacritize-section {
  padding: 0 12px;
  flex-shrink: 0;
}

#diacritize-btn {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: var(--radius);
  background: var(--color-primary);
  color: white;
  font-family: var(--font-body);
  cursor: pointer;
  transition: all 0.15s;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

#diacritize-btn:active:not(:disabled) {
  background: var(--color-primary-dark);
  transform: scale(0.98);
}

#diacritize-btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

#diacritize-btn .btn-title {
  font-size: 16px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

#diacritize-btn .btn-subtitle {
  font-size: 11px;
  opacity: 0.7;
}

#diacritize-btn.loading .btn-title::after {
  content: "";
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
  margin-left: 8px;
  vertical-align: middle;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* --- Autocomplete Bar --- */
#autocomplete-bar {
  display: flex;
  gap: 6px;
  padding: 8px 12px;
  overflow-x: auto;
  flex-shrink: 0;
  scrollbar-width: none;
  min-height: 42px;
}

#autocomplete-bar::-webkit-scrollbar { display: none; }

#autocomplete-bar.hidden {
  visibility: hidden;
}

.suggestion-btn {
  padding: 6px 14px;
  border: 1px solid var(--color-primary-light);
  border-radius: 20px;
  background: white;
  color: var(--color-primary);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: all 0.15s;
}

.suggestion-btn:active {
  background: var(--color-primary);
  color: white;
  transform: scale(0.95);
}

/* --- Keyboard Section --- */
.keyboard-section {
  background: var(--color-bg-keyboard);
  padding: 6px 4px 12px;
  flex-shrink: 0;
  border-top: 1px solid #D4D0CA;
}

/* simple-keyboard overrides */
.simple-keyboard {
  background: transparent !important;
  padding: 0 !important;
  font-family: var(--font-body) !important;
}

.simple-keyboard .hg-button {
  height: 44px !important;
  border-radius: var(--radius-sm) !important;
  background: var(--color-key-bg) !important;
  border: none !important;
  box-shadow: 0 1px 2px var(--color-key-shadow) !important;
  color: var(--color-text) !important;
  font-size: 18px !important;
  font-family: var(--font-body) !important;
  transition: all 0.1s !important;
}

.simple-keyboard .hg-button:active {
  background: var(--color-key-active) !important;
  color: white !important;
  transform: scale(0.95);
}

/* Igbo special character keys */
.simple-keyboard .hg-button[data-skbtn="{igbo_i}"],
.simple-keyboard .hg-button[data-skbtn="{igbo_o}"],
.simple-keyboard .hg-button[data-skbtn="{igbo_u}"],
.simple-keyboard .hg-button[data-skbtn="{igbo_n}"],
.simple-keyboard .hg-button[data-skbtn="{igbo_I}"],
.simple-keyboard .hg-button[data-skbtn="{igbo_O}"],
.simple-keyboard .hg-button[data-skbtn="{igbo_U}"],
.simple-keyboard .hg-button[data-skbtn="{igbo_N}"] {
  background: var(--color-special-key) !important;
  color: white !important;
  font-weight: 600 !important;
}

/* Functional keys */
.simple-keyboard .hg-button[data-skbtn="{shift}"],
.simple-keyboard .hg-button[data-skbtn="{bksp}"],
.simple-keyboard .hg-button[data-skbtn="{enter}"] {
  background: #D4D0CA !important;
  color: var(--color-text) !important;
  font-size: 16px !important;
}

.simple-keyboard .hg-button[data-skbtn="{space}"] {
  min-width: 30% !important;
}

/* Tone variant popup */
.tone-popup {
  position: absolute;
  display: flex;
  gap: 4px;
  padding: 6px;
  background: white;
  border-radius: var(--radius);
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
  z-index: 100;
}

.tone-variant {
  width: 44px;
  height: 44px;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 20px;
  font-family: var(--font-body);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.1s;
}

.tone-variant:active {
  background: var(--color-accent);
  color: white;
}

/* --- Loading Overlay --- */
#loading-overlay {
  position: absolute;
  inset: 0;
  background: rgba(250, 247, 242, 0.8);
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  z-index: 10;
}

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

.loading-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid #E0DCD6;
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 0.7s linear infinite;
}

/* --- Responsive --- */
@media (min-width: 600px) {
  body {
    max-width: 480px;
    margin: 0 auto;
    border-left: 1px solid #E0DCD6;
    border-right: 1px solid #E0DCD6;
  }
}

@media (min-width: 1024px) {
  html, body { overflow: auto; }
  body {
    height: auto;
    min-height: 100vh;
  }
  .text-section {
    min-height: 200px;
  }
  #text-input {
    min-height: 150px;
  }
}

/* --- Keyboard toggle (desktop) --- */
.kb-toggle {
  display: none;
  padding: 8px 16px;
  text-align: center;
}

.kb-toggle button {
  padding: 6px 16px;
  border: 1px solid var(--color-primary);
  border-radius: var(--radius-sm);
  background: white;
  color: var(--color-primary);
  font-family: var(--font-body);
  font-size: 13px;
  cursor: pointer;
}

@media (hover: hover) and (pointer: fine) {
  .kb-toggle { display: block; }
  .keyboard-section.hidden-desktop { display: none; }
}