/* ==========================================================================
   Translator — orient-luxury design system
   Near-black grain-textured dark mode (default) with parchment light mode.
   ========================================================================== */

:root,
html[data-theme="dark"] {
  --ol-bg: #09080b;
  --ol-bg-elevated: #121016;
  --ol-bg-elevated-2: #17141c;
  --ol-bg-input: #1b1720;

  --ol-gold: #c9a84c;
  --ol-gold-bright: #e4c874;
  --ol-gold-dim: rgba(201, 168, 76, 0.35);
  --ol-gold-glow: rgba(201, 168, 76, 0.16);
  --ol-gold-faint: rgba(201, 168, 76, 0.08);

  --ol-text: #f2ece0;
  --ol-text-bright: #fdf9f0;
  --ol-text-dim: #a89d88;
  --ol-text-faint: #6f6656;

  --ol-border: rgba(201, 168, 76, 0.18);
  --ol-border-strong: rgba(201, 168, 76, 0.4);

  --ol-danger: #d17a6a;
  --ol-danger-bg: rgba(209, 122, 106, 0.12);
  --ol-success: #93b89a;

  --ol-shadow: rgba(0, 0, 0, 0.55);
  --ol-grain-opacity: 0.05;
}

html[data-theme="light"] {
  --ol-bg: #f0ebe0;
  --ol-bg-elevated: #fbf8f2;
  --ol-bg-elevated-2: #ffffff;
  --ol-bg-input: #ffffff;

  --ol-gold: #8a6820;
  --ol-gold-bright: #6e5119;
  --ol-gold-dim: rgba(138, 104, 32, 0.3);
  --ol-gold-glow: rgba(138, 104, 32, 0.1);
  --ol-gold-faint: rgba(138, 104, 32, 0.06);

  --ol-text: #241f16;
  --ol-text-bright: #14110b;
  --ol-text-dim: #6b6152;
  --ol-text-faint: #948a78;

  --ol-border: rgba(138, 104, 32, 0.25);
  --ol-border-strong: rgba(138, 104, 32, 0.5);

  --ol-danger: #a8402e;
  --ol-danger-bg: rgba(168, 64, 46, 0.08);
  --ol-success: #4f7a58;

  --ol-shadow: rgba(90, 75, 40, 0.18);
  --ol-grain-opacity: 0.035;
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--ol-bg);
  color: var(--ol-text);
  font-family: "Cormorant Garamond", Georgia, serif;
  transition: background-color 0.35s ease, color 0.35s ease;
  position: relative;
}

/* ---------------------------------------------------------------------
   Grain overlay
   --------------------------------------------------------------------- */
.grain-overlay {
  position: fixed;
  inset: 0;
  z-index: 999;
  pointer-events: none;
  mix-blend-mode: soft-light;
  opacity: var(--ol-grain-opacity);
}

/* ---------------------------------------------------------------------
   Layout shell
   --------------------------------------------------------------------- */
.page {
  position: relative;
  z-index: 1;
  max-width: 1080px;
  margin: 0 auto;
  padding: 2.75rem 1.5rem 4rem;
}

/* ---------------------------------------------------------------------
   Header
   --------------------------------------------------------------------- */
.site-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1.5rem;
  margin-bottom: 2.75rem;
}

.brand {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.brand-mark {
  font-family: "Cinzel", Georgia, serif;
  font-weight: 600;
  font-size: clamp(1.75rem, 1.35rem + 1.6vw, 2.5rem);
  letter-spacing: 0.14em;
  color: var(--ol-gold-bright);
  text-transform: uppercase;
  margin: 0;
}

.brand-tagline {
  font-family: "Cormorant Garamond", Georgia, serif;
  font-style: italic;
  font-size: 1.05rem;
  color: var(--ol-text-dim);
  margin: 0;
  letter-spacing: 0.02em;
}

.theme-toggle {
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  background: var(--ol-bg-elevated);
  border: 1px solid var(--ol-border);
  color: var(--ol-text-dim);
  font-family: "Syne", sans-serif;
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.6rem 1rem;
  border-radius: 999px;
  cursor: pointer;
  transition: border-color 0.25s ease, color 0.25s ease, background-color 0.25s ease;
}

.theme-toggle:hover {
  border-color: var(--ol-border-strong);
  color: var(--ol-gold);
}

.theme-toggle .icon {
  width: 15px;
  height: 15px;
  display: inline-block;
}

/* ---------------------------------------------------------------------
   Main card
   --------------------------------------------------------------------- */
.studio {
  background: var(--ol-bg-elevated);
  border: 1px solid var(--ol-border);
  border-radius: 6px;
  box-shadow: 0 30px 60px -25px var(--ol-shadow);
  padding: 2.25rem;
  position: relative;
  overflow: hidden;
}

.studio::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--ol-gold-dim) 20%, var(--ol-gold) 50%, var(--ol-gold-dim) 80%, transparent);
  opacity: 0.7;
}

/* ---------------------------------------------------------------------
   Language selectors row
   --------------------------------------------------------------------- */
.lang-row {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.lang-field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.lang-field label {
  font-family: "Syne", sans-serif;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ol-text-faint);
}

.lang-select {
  appearance: none;
  -webkit-appearance: none;
  background: var(--ol-bg-input) url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20'><path fill='%23c9a84c' d='M5.5 7.5l4.5 4.5 4.5-4.5z'/></svg>") no-repeat right 0.85rem center;
  background-size: 11px;
  border: 1px solid var(--ol-border);
  color: var(--ol-text);
  font-family: "Syne", sans-serif;
  font-size: 0.88rem;
  padding: 0.75rem 2.25rem 0.75rem 0.9rem;
  border-radius: 4px;
  cursor: pointer;
  transition: border-color 0.2s ease;
  width: 100%;
}

.lang-select:hover {
  border-color: var(--ol-border-strong);
}

.lang-select:focus-visible {
  outline: 2px solid var(--ol-gold);
  outline-offset: 2px;
}

/* Swap button medallion */
.swap-btn {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1px solid var(--ol-border-strong);
  background: var(--ol-bg-elevated-2);
  color: var(--ol-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  margin-top: 1.1rem;
  transition: transform 0.35s ease, box-shadow 0.35s ease, background-color 0.25s ease;
  flex-shrink: 0;
}

.swap-btn:hover {
  box-shadow: 0 0 0 6px var(--ol-gold-faint);
}

.swap-btn:active {
  transform: rotate(180deg);
}

.swap-btn:focus-visible {
  outline: 2px solid var(--ol-gold);
  outline-offset: 3px;
}

.swap-btn svg {
  width: 18px;
  height: 18px;
}

/* ---------------------------------------------------------------------
   Panes
   --------------------------------------------------------------------- */
.panes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border: 1px solid var(--ol-border);
  border-radius: 4px;
  overflow: hidden;
  position: relative;
}

.panes::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1px;
  background: var(--ol-border);
}

.pane {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  min-height: 220px;
}

.pane-source {
  background: var(--ol-bg-elevated);
}

.pane-target {
  background: var(--ol-bg-elevated-2);
}

.source-textarea {
  flex: 1;
  resize: none;
  background: transparent;
  border: none;
  color: var(--ol-text);
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: 1.35rem;
  line-height: 1.6;
  min-height: 180px;
}

.source-textarea::placeholder {
  color: var(--ol-text-faint);
  font-style: italic;
}

.source-textarea:focus-visible {
  outline: none;
}

.pane-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 0.75rem;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.72rem;
  color: var(--ol-text-faint);
}

.char-count.limit-near {
  color: var(--ol-danger);
}

/* Output pane — enlarged, brightened translation display */
.output-display {
  flex: 1;
  min-height: 180px;
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: clamp(1.5rem, 1.2rem + 1vw, 1.85rem);
  line-height: 1.55;
  font-weight: 500;
  color: var(--ol-text-bright);
  text-shadow: 0 0 22px var(--ol-gold-glow);
  white-space: pre-wrap;
  word-break: break-word;
}

.output-display .flap-char {
  display: inline-block;
  opacity: 0;
  transform: rotateX(-90deg) translateY(-6px);
  animation: flap-reveal 0.42s ease forwards;
}

@keyframes flap-reveal {
  0% {
    opacity: 0;
    transform: rotateX(-90deg) translateY(-6px);
  }
  60% {
    opacity: 1;
  }
  100% {
    opacity: 1;
    transform: rotateX(0deg) translateY(0);
  }
}

.output-placeholder {
  color: var(--ol-text-faint);
  font-style: italic;
  font-size: 1.1rem;
  text-shadow: none;
}

.output-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.6rem;
  margin-top: 0.75rem;
}

.copy-btn {
  background: transparent;
  border: 1px solid var(--ol-border);
  color: var(--ol-text-dim);
  font-family: "Syne", sans-serif;
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.45rem 0.85rem;
  border-radius: 999px;
  cursor: pointer;
  transition: border-color 0.2s ease, color 0.2s ease;
}

.copy-btn:hover {
  border-color: var(--ol-border-strong);
  color: var(--ol-gold);
}

.copy-btn:focus-visible {
  outline: 2px solid var(--ol-gold);
  outline-offset: 2px;
}

/* ---------------------------------------------------------------------
   Action row
   --------------------------------------------------------------------- */
.action-row {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.9rem;
  margin-top: 2rem;
}

.translate-btn {
  font-family: "Syne", sans-serif;
  font-size: 0.85rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ol-bg);
  background: linear-gradient(135deg, var(--ol-gold-bright), var(--ol-gold));
  border: none;
  padding: 0.95rem 2.75rem;
  border-radius: 999px;
  cursor: pointer;
  box-shadow: 0 12px 30px -12px var(--ol-gold-glow);
  transition: transform 0.2s ease, box-shadow 0.2s ease, opacity 0.2s ease;
}

.translate-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 16px 34px -12px var(--ol-gold-glow);
}

.translate-btn:focus-visible {
  outline: 2px solid var(--ol-text);
  outline-offset: 3px;
}

.translate-btn:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  transform: none;
}

.status-line {
  min-height: 1.3rem;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.78rem;
  color: var(--ol-text-dim);
  text-align: center;
}

.status-line.is-error {
  color: var(--ol-danger);
}

/* ---------------------------------------------------------------------
   Toast
   --------------------------------------------------------------------- */
.toast {
  position: fixed;
  left: 50%;
  bottom: 2rem;
  transform: translate(-50%, 12px);
  z-index: 1000;
  background: var(--ol-bg-elevated-2);
  border: 1px solid var(--ol-border-strong);
  color: var(--ol-text);
  font-family: "Syne", sans-serif;
  font-size: 0.8rem;
  letter-spacing: 0.03em;
  padding: 0.85rem 1.4rem;
  border-radius: 6px;
  box-shadow: 0 20px 40px -15px var(--ol-shadow);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease, transform 0.3s ease;
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.toast.is-error {
  border-color: var(--ol-danger);
  color: var(--ol-danger);
}

/* ---------------------------------------------------------------------
   Footer
   --------------------------------------------------------------------- */
.site-footer {
  margin-top: 2.5rem;
  text-align: center;
  font-family: "IBM Plex Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  color: var(--ol-text-faint);
}

/* ---------------------------------------------------------------------
   Responsive
   --------------------------------------------------------------------- */
@media (max-width: 720px) {
  .page {
    padding: 2rem 1.1rem 3rem;
  }

  .site-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .studio {
    padding: 1.4rem;
  }

  .lang-row {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .swap-btn {
    margin-top: 0;
    justify-self: center;
    transform: rotate(90deg);
  }

  .swap-btn:active {
    transform: rotate(270deg);
  }

  .panes {
    grid-template-columns: 1fr;
  }

  .panes::after {
    left: 0;
    right: 0;
    top: 50%;
    bottom: auto;
    width: auto;
    height: 1px;
  }
}

/* ---------------------------------------------------------------------
   Reduced motion
   --------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }

  .output-display .flap-char {
    opacity: 1;
    transform: none;
  }
}