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

/* ─── Tokens ─────────────────────────────────────────────────────────── */
:root {
  --white:        rgba(255, 255, 255, 1);
  --white-90:     rgba(255, 255, 255, 0.9);
  --white-50:     rgba(255, 255, 255, 0.5);
  --white-30:     rgba(255, 255, 255, 0.3);
  --white-15:     rgba(255, 255, 255, 0.15);
  --white-08:     rgba(255, 255, 255, 0.08);
  --white-04:     rgba(255, 255, 255, 0.04);
  --font:         'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --ease-out:     cubic-bezier(0.16, 1, 0.3, 1);
}

/* ─── Base ───────────────────────────────────────────────────────────── */
html, body {
  height: 100%;
}

body {
  background: #000;
  color: var(--white-90);
  font-family: var(--font);
  font-weight: 300;
  overflow: hidden;
  user-select: none;
  -webkit-font-smoothing: antialiased;
}

/* ─── Loading Overlay ────────────────────────────────────────────────── */
#loading-overlay {
  position: fixed;
  inset: 0;
  background: #000;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 14px;
  z-index: 300;
  transition: opacity 0.8s var(--ease-out);
}

#loading-overlay.fade-out {
  opacity: 0;
  pointer-events: none;
}

.load-brand {
  font-size: 13px;
  letter-spacing: 0.45em;
  color: var(--white-50);
  text-transform: lowercase;
  margin-bottom: 4px;
}

.load-detail {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--white-30);
  text-transform: lowercase;
  min-height: 16px;
  transition: opacity 0.3s;
}

.load-bar-track {
  width: 100px;
  height: 1px;
  background: var(--white-08);
  border-radius: 1px;
  overflow: hidden;
}

.load-bar-fill {
  height: 100%;
  width: 0%;
  background: var(--white-50);
  border-radius: 1px;
  transition: width 0.25s ease;
}

.load-sub {
  font-size: 10px;
  letter-spacing: 0.08em;
  color: var(--white-15);
  text-transform: lowercase;
  max-width: 240px;
  text-align: center;
  line-height: 1.7;
}

#load-skip {
  margin-top: 8px;
  background: none;
  border: 1px solid var(--white-08);
  border-radius: 6px;
  color: var(--white-30);
  cursor: pointer;
  font-family: var(--font);
  font-size: 10px;
  font-weight: 300;
  letter-spacing: 0.12em;
  padding: 8px 16px;
  text-transform: lowercase;
  transition: all 0.2s;
}

#load-skip:hover {
  border-color: var(--white-30);
  color: var(--white-90);
}

/* ─── Canvas ─────────────────────────────────────────────────────────── */
#canvas {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  cursor: pointer;
  touch-action: none;
}

/* ─── UI Overlay ─────────────────────────────────────────────────────── */
#ui {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  pointer-events: none;
  z-index: 10;
}

#status-text {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--white-30);
  text-transform: lowercase;
  margin-top: 200px;
  transition: opacity 0.4s ease, color 0.4s ease;
}

#status-text.active {
  color: var(--white-50);
}

#transcript-text {
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--white-30);
  max-width: 380px;
  text-align: center;
  line-height: 1.6;
  padding: 0 32px;
  margin-top: 8px;
  min-height: 20px;
  transition: opacity 0.3s;
  font-style: italic;
}

#response-text {
  font-size: 13px;
  letter-spacing: 0.01em;
  color: var(--white-50);
  max-width: 400px;
  text-align: center;
  line-height: 1.65;
  padding: 0 32px;
  margin-top: 6px;
  min-height: 20px;
  transition: opacity 0.3s;
}

/* ─── Brand ──────────────────────────────────────────────────────────── */
#brand {
  position: fixed;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 10px;
  letter-spacing: 0.55em;
  color: var(--white-15);
  text-transform: lowercase;
  z-index: 10;
  pointer-events: none;
}

/* ─── Settings Toggle ────────────────────────────────────────────────── */
#settings-toggle {
  position: fixed;
  top: 22px;
  right: 22px;
  background: none;
  border: none;
  color: var(--white-15);
  cursor: pointer;
  width: 20px;
  height: 20px;
  padding: 0;
  z-index: 20;
  transition: color 0.25s ease;
  display: flex;
  align-items: center;
  justify-content: center;
}

#settings-toggle:hover {
  color: var(--white-50);
}

#settings-toggle svg {
  width: 100%;
  height: 100%;
}

/* ─── Settings Panel ─────────────────────────────────────────────────── */
#settings-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: 300px;
  height: 100%;
  background: rgba(8, 8, 8, 0.97);
  border-left: 1px solid var(--white-08);
  padding: 24px 20px 32px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  z-index: 50;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 0.35s var(--ease-out);
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
}

#settings-panel.open {
  transform: translateX(0);
}

.settings-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-bottom: 4px;
}

.settings-header span {
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--white-30);
  text-transform: lowercase;
}

#settings-close {
  background: none;
  border: none;
  color: var(--white-30);
  cursor: pointer;
  font-size: 13px;
  padding: 0;
  line-height: 1;
  transition: color 0.2s;
}

#settings-close:hover {
  color: var(--white-90);
}

/* ─── Setting Groups ─────────────────────────────────────────────────── */
.settings-section {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.setting-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
}

.setting-label {
  font-size: 10px;
  letter-spacing: 0.18em;
  color: var(--white-30);
  text-transform: lowercase;
}

.setting-hint {
  font-size: 10px;
  letter-spacing: 0.02em;
  color: var(--white-15);
  line-height: 1.65;
  text-transform: lowercase;
}

/* ─── Inputs ─────────────────────────────────────────────────────────── */
input[type="text"],
input[type="password"],
select {
  background: var(--white-04);
  border: 1px solid var(--white-08);
  border-radius: 6px;
  color: var(--white-90);
  font-family: var(--font);
  font-size: 12px;
  font-weight: 300;
  letter-spacing: 0.02em;
  padding: 9px 11px;
  width: 100%;
  outline: none;
  transition: border-color 0.2s, background 0.2s;
  -webkit-appearance: none;
  appearance: none;
}

input[type="text"]::placeholder,
input[type="password"]::placeholder {
  color: var(--white-15);
}

input[type="text"]:focus,
input[type="password"]:focus,
select:focus {
  border-color: var(--white-15);
  background: var(--white-08);
}

select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath d='M1 1l4 4 4-4' stroke='rgba(255,255,255,0.3)' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 11px center;
  padding-right: 28px;
  cursor: pointer;
}

select option {
  background: #111;
  color: #fff;
}

/* ─── Mode Toggle ────────────────────────────────────────────────────── */
.mode-toggle {
  display: flex;
  gap: 5px;
}

.mode-btn {
  flex: 1;
  background: none;
  border: 1px solid var(--white-08);
  border-radius: 6px;
  color: var(--white-30);
  cursor: pointer;
  font-family: var(--font);
  font-size: 10px;
  font-weight: 300;
  letter-spacing: 0.08em;
  padding: 8px 6px;
  text-transform: lowercase;
  transition: all 0.2s ease;
}

.mode-btn.active {
  background: var(--white-08);
  border-color: var(--white-15);
  color: var(--white-90);
}

.mode-btn:hover:not(.active) {
  border-color: var(--white-15);
  color: var(--white-50);
}

/* ─── Action Buttons ─────────────────────────────────────────────────── */
.settings-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 4px;
}

.btn-action {
  background: none;
  border: 1px solid var(--white-08);
  border-radius: 6px;
  color: var(--white-50);
  cursor: pointer;
  font-family: var(--font);
  font-size: 11px;
  font-weight: 300;
  letter-spacing: 0.12em;
  padding: 10px;
  text-transform: lowercase;
  transition: all 0.2s ease;
  width: 100%;
}

.btn-action:hover {
  border-color: var(--white-30);
  color: var(--white-90);
}

.btn-action-dim {
  color: var(--white-15);
}

.btn-action-dim:hover {
  color: var(--white-50);
}

/* ─── Privacy Note ───────────────────────────────────────────────────── */
.privacy-note {
  font-size: 10px;
  letter-spacing: 0.02em;
  color: var(--white-15);
  line-height: 1.75;
  text-align: left;
  padding-top: 16px;
  border-top: 1px solid var(--white-08);
  text-transform: lowercase;
  margin-top: auto;
}

.privacy-note strong {
  font-weight: 400;
  color: var(--white-30);
}

/* ─── Error Toast ────────────────────────────────────────────────────── */
#error-toast {
  position: fixed;
  bottom: 64px;
  left: 50%;
  transform: translateX(-50%) translateY(10px);
  background: rgba(20, 20, 20, 0.95);
  border: 1px solid rgba(255, 80, 80, 0.3);
  border-radius: 8px;
  color: rgba(255, 150, 150, 0.9);
  font-size: 11px;
  letter-spacing: 0.05em;
  padding: 10px 18px;
  z-index: 100;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s, transform 0.3s;
  text-transform: lowercase;
  max-width: 320px;
  text-align: center;
}

#error-toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ─── Scrollbar ──────────────────────────────────────────────────────── */
#settings-panel::-webkit-scrollbar {
  width: 4px;
}

#settings-panel::-webkit-scrollbar-track {
  background: transparent;
}

#settings-panel::-webkit-scrollbar-thumb {
  background: var(--white-08);
  border-radius: 2px;
}