/* ═══════════════════════════════════════════════════════════════════
   Develop Studio — Qwen image editing
   Darkroom-studio aesthetic: ink blue-black + amber safelight + cyan
   ═══════════════════════════════════════════════════════════════════ */

/* ── Tokens ─────────────────────────────────────────────────────── */
:root {
  --bg: #0b0e13;
  --bg-deep: #07090d;
  --panel: #10141b;
  --panel-2: #161b24;
  --line: rgba(150, 163, 184, 0.14);
  --line-strong: rgba(150, 163, 184, 0.28);
  --text: #e8edf4;
  --text-2: #a6b0be;
  --text-3: #68738a;
  --amber: #ffb454;
  --amber-hi: #ffc87a;
  --cyan: #7dd3fc;
  --danger: #f87171;
  --ok: #4ade80;
  --dot: rgba(150, 163, 184, 0.07);
  --shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
  --radius: 12px;
  --font-display: "Space Grotesk", "Inter", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;
}

html[data-theme="light"] {
  --bg: #eef0f4;
  --bg-deep: #e4e7ec;
  --panel: #ffffff;
  --panel-2: #f4f6f9;
  --line: rgba(20, 27, 38, 0.12);
  --line-strong: rgba(20, 27, 38, 0.24);
  --text: #161b24;
  --text-2: #4b5563;
  --text-3: #8a94a6;
  --amber: #c97f14;
  --amber-hi: #b06f0c;
  --cyan: #0e7490;
  --danger: #dc2626;
  --ok: #15803d;
  --dot: rgba(20, 27, 38, 0.06);
  --shadow: 0 12px 32px rgba(30, 40, 60, 0.14);
}

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

/* The hidden attribute must always win over display rules (e.g. flex).
   Without this, elements toggled via .hidden stay visible. */
[hidden] {
  display: none !important;
}

html {
  height: 100%;
}

body {
  height: 100%;
  font-family: var(--font-body);
  font-size: 15px;
  line-height: 1.5;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  transition: background 0.25s ease, color 0.25s ease;
}

::selection {
  background: color-mix(in srgb, var(--amber) 30%, transparent);
}

:focus-visible {
  outline: 2px solid var(--amber);
  outline-offset: 2px;
  border-radius: 4px;
}

button {
  font: inherit;
  color: inherit;
  background: none;
  border: none;
  cursor: pointer;
}

.mono {
  font-family: var(--font-mono);
}

/* ── App shell ──────────────────────────────────────────────────── */
.app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
}

/* ── Top bar ────────────────────────────────────────────────────── */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  padding: 0 20px;
  background: color-mix(in srgb, var(--panel) 88%, transparent);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(10px);
  position: relative;
  z-index: 10;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.brand-mark {
  width: 22px;
  height: 22px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--amber), var(--cyan));
  transform: rotate(45deg);
  box-shadow: 0 0 18px color-mix(in srgb, var(--amber) 45%, transparent);
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.brand-sub {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  padding: 3px 8px;
  border: 1px solid var(--line);
  border-radius: 99px;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-btn {
  position: relative;
  padding: 9px 11px;
}

.icon-btn .gear {
  display: block;
}

/* Amber dot shown when a custom key is stored in this browser */
.key-indicator {
  position: absolute;
  top: 5px;
  right: 5px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 2px var(--panel), 0 0 8px color-mix(in srgb, var(--amber) 70%, transparent);
  animation: key-pulse 2.4s ease-in-out infinite;
}

@keyframes key-pulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(0.8); opacity: 0.75; }
}

.ghost-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-2);
  transition: border-color 0.18s, color 0.18s, background 0.18s;
}

.ghost-btn:hover {
  border-color: var(--line-strong);
  color: var(--text);
  background: var(--panel-2);
}

.theme-icon {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1.5px solid var(--text-2);
  position: relative;
}

html[data-theme="dark"] .theme-icon::after {
  content: "";
  position: absolute;
  top: -3px;
  right: -3px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--bg);
  border: 1.5px solid var(--text-2);
}

html[data-theme="light"] .theme-icon {
  background: var(--amber);
  border-color: var(--amber);
}

/* ── Shell: rail + canvas ───────────────────────────────────────── */
.shell {
  flex: 1;
  display: grid;
  grid-template-columns: 344px 1fr;
  min-height: 0;
}

/* ── Rail ───────────────────────────────────────────────────────── */
.rail {
  background: var(--panel);
  border-right: 1px solid var(--line);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}

.rail-form {
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 20px;
  gap: 26px;
}

.ctrl-section {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
}

/* Upload zone */
.upload-zone {
  position: relative;
  border: 1.5px dashed var(--line-strong);
  border-radius: var(--radius);
  padding: 26px 18px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s, transform 0.15s;
  background: color-mix(in srgb, var(--panel-2) 40%, transparent);
}

.upload-zone:hover,
.upload-zone.dragover {
  border-color: var(--amber);
  background: color-mix(in srgb, var(--amber) 6%, var(--panel));
}

.upload-zone.has-file {
  border-style: solid;
  border-color: color-mix(in srgb, var(--amber) 60%, var(--line-strong));
}

.upload-zone.has-file .upload-title {
  font-weight: 600;
  color: var(--text);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.upload-glyph {
  width: 34px;
  height: 34px;
  margin: 0 auto 10px;
  border-radius: 9px;
  border: 1.5px solid var(--line-strong);
  position: relative;
  transition: border-color 0.2s, transform 0.2s;
}

.upload-glyph::before,
.upload-glyph::after {
  content: "";
  position: absolute;
  background: var(--line-strong);
  border-radius: 2px;
  transition: background 0.2s;
}

.upload-glyph::before {
  width: 1.5px;
  height: 14px;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.upload-glyph::after {
  width: 14px;
  height: 1.5px;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.upload-zone:hover .upload-glyph,
.upload-zone.dragover .upload-glyph {
  border-color: var(--amber);
}

.upload-zone:hover .upload-glyph::before,
.upload-zone:hover .upload-glyph::after,
.upload-zone.dragover .upload-glyph::before,
.upload-zone.dragover .upload-glyph::after {
  background: var(--amber);
}

.upload-title {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--text-2);
}

.upload-hint {
  font-size: 0.78rem;
  color: var(--text-3);
  margin-top: 2px;
}

.upload-meta {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-top: 10px;
  opacity: 0.8;
}

.clear-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  width: 26px;
  height: 26px;
  border-radius: 7px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--text-3);
  font-size: 0.72rem;
  line-height: 1;
  transition: color 0.15s, border-color 0.15s;
}

.clear-btn:hover {
  color: var(--danger);
  border-color: color-mix(in srgb, var(--danger) 50%, var(--line));
}

/* Prompt */
#promptInput {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg-deep);
  border: 1px solid var(--line);
  border-radius: 9px;
  color: var(--text);
  font-size: 0.92rem;
  font-family: var(--font-body);
  transition: border-color 0.18s, box-shadow 0.18s;
}

#promptInput::placeholder {
  color: var(--text-3);
}

#promptInput:focus {
  outline: none;
  border-color: var(--amber);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--amber) 18%, transparent);
}

/* History chips */
.history {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.history-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
}

.link-btn {
  font-size: 0.68rem;
  color: var(--text-3);
  text-decoration: underline;
  text-underline-offset: 3px;
  transition: color 0.15s;
}

.link-btn:hover {
  color: var(--danger);
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.chip {
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 99px;
  background: var(--panel-2);
  font-size: 0.76rem;
  color: var(--text-2);
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  transition: border-color 0.15s, color 0.15s;
}

.chip:hover {
  border-color: var(--amber);
  color: var(--text);
}

/* Fields */
.field-row {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 12px;
}

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

.field label {
  font-family: var(--font-mono);
  font-size: 0.64rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
}

.select-wrap {
  position: relative;
}

.select-wrap::after {
  content: "";
  position: absolute;
  right: 13px;
  top: 50%;
  width: 8px;
  height: 8px;
  border-right: 1.5px solid var(--text-3);
  border-bottom: 1.5px solid var(--text-3);
  transform: translateY(-65%) rotate(45deg);
  pointer-events: none;
}

select,
input[type="number"] {
  width: 100%;
  padding: 10px 12px;
  background: var(--bg-deep);
  border: 1px solid var(--line);
  border-radius: 9px;
  color: var(--text);
  font-size: 0.88rem;
  font-family: var(--font-mono);
  transition: border-color 0.18s, box-shadow 0.18s;
}

select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 32px;
  cursor: pointer;
}

select:focus,
input[type="number"]:focus {
  outline: none;
  border-color: var(--amber);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--amber) 18%, transparent);
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
  opacity: 0.4;
}

/* Rail footer + primary button */
.rail-foot {
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding-top: 8px;
}

.primary-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  padding: 14px 18px;
  border-radius: 10px;
  background: linear-gradient(120deg, var(--amber), var(--amber-hi));
  color: #14100a;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.98rem;
  letter-spacing: 0.01em;
  box-shadow: 0 6px 20px color-mix(in srgb, var(--amber) 28%, transparent);
  transition: transform 0.12s, box-shadow 0.2s, opacity 0.2s;
}

.primary-btn:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 10px 26px color-mix(in srgb, var(--amber) 38%, transparent);
}

.primary-btn:active:not(:disabled) {
  transform: translateY(0);
}

.primary-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
}

.primary-btn .btn-shortcut {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  opacity: 0.7;
  border: 1px solid currentColor;
  border-radius: 5px;
  padding: 2px 6px;
}

html[data-platform="mac"] .btn-shortcut::before {
  content: "⌘";
  margin-right: 2px;
}

.rail-note {
  font-size: 0.7rem;
  color: var(--text-3);
  text-align: center;
  line-height: 1.45;
}

/* ── Canvas / stage ─────────────────────────────────────────────── */
.canvas {
  min-width: 0;
  overflow: hidden;
  display: flex;
}

.stage {
  flex: 1;
  overflow-y: auto;
  padding: 28px 32px 40px;
  background-color: var(--bg);
  background-image: radial-gradient(var(--dot) 1px, transparent 1px);
  background-size: 22px 22px;
  position: relative;
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}

/* Empty state */
.empty-state {
  height: 100%;
  min-height: 320px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 8px;
}

.empty-glyph {
  width: 64px;
  height: 64px;
  margin-bottom: 14px;
  border-radius: 16px;
  border: 1.5px dashed var(--line-strong);
  position: relative;
}

.empty-glyph::before,
.empty-glyph::after {
  content: "";
  position: absolute;
  background: var(--line-strong);
  border-radius: 2px;
}

.empty-glyph::before {
  width: 2px;
  height: 26px;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.empty-glyph::after {
  width: 26px;
  height: 2px;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}

.empty-title {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--text-2);
}

.empty-hint {
  font-size: 0.85rem;
  color: var(--text-3);
  max-width: 380px;
}

/* Source card */
.source-card {
  max-width: 640px;
  margin-bottom: 28px;
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.source-media {
  background: var(--bg-deep);
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 120px;
}

.source-media img {
  display: block;
  max-width: 100%;
  max-height: 340px;
  object-fit: contain;
}

.source-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 10px 14px;
  border-top: 1px solid var(--line);
}

.source-name {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-2);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.source-dims {
  font-size: 0.72rem;
  color: var(--text-3);
  white-space: nowrap;
}

/* ── Develop overlay ────────────────────────────────────────────── */
.develop {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--bg) 60%, transparent);
  backdrop-filter: blur(6px);
  z-index: 20;
}

.develop-card {
  position: relative;
  width: min(460px, 82%);
  aspect-ratio: 3 / 2;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--line-strong);
  box-shadow: var(--shadow);
  background: var(--bg-deep);
}

.develop-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.75) contrast(1.05);
}

.develop-scan {
  position: absolute;
  left: 0;
  right: 0;
  height: 42%;
  background: linear-gradient(
    180deg,
    transparent 0%,
    color-mix(in srgb, var(--amber) 14%, transparent) 45%,
    color-mix(in srgb, var(--cyan) 30%, transparent) 55%,
    transparent 100%
  );
  animation: develop-scan 1.7s cubic-bezier(0.45, 0, 0.55, 1) infinite;
}

@keyframes develop-scan {
  0% { top: -45%; }
  100% { top: 105%; }
}

.develop-overlay {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-end;
  padding-bottom: 22px;
  background: linear-gradient(180deg, transparent 40%, rgba(0, 0, 0, 0.55) 100%);
}

.develop-label {
  font-size: 0.66rem;
  font-weight: 600;
  letter-spacing: 0.3em;
  color: var(--amber);
  text-shadow: 0 1px 8px rgba(0, 0, 0, 0.6);
}

.develop-timer {
  font-size: 1.5rem;
  font-weight: 500;
  color: #fff;
  text-shadow: 0 1px 10px rgba(0, 0, 0, 0.7);
  margin: 4px 0;
}

.develop-hint {
  font-size: 0.72rem;
  color: rgba(255, 255, 255, 0.75);
}

/* ── Results ────────────────────────────────────────────────────── */
.results-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.results-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.results-hint {
  font-size: 0.76rem;
  color: var(--text-3);
}

.results-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 16px;
}

.result {
  border: 1px solid var(--line);
  border-radius: 14px;
  overflow: hidden;
  background: var(--panel);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}

.result:hover {
  border-color: var(--line-strong);
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.result-media {
  position: relative;
  aspect-ratio: 3 / 2;
  overflow: hidden;
  background: var(--bg-deep);
  cursor: crosshair;
}

.result-media img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Before/after comparison layers */
.result-src {
  clip-path: inset(0 100% 0 0);
  transition: clip-path 0.45s ease;
}

.result.comparing .result-src,
.result:hover .result-src {
  clip-path: inset(0 50% 0 0);
}

.result.comparing .result-src {
  transition: clip-path 0.25s ease;
}

.compare-divider {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: 1.5px;
  background: var(--amber);
  box-shadow: 0 0 12px color-mix(in srgb, var(--amber) 70%, transparent);
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
}

.result.comparing .compare-divider,
.result:hover .compare-divider {
  opacity: 1;
}

.compare-tag {
  position: absolute;
  left: 10px;
  bottom: 10px;
  font-family: var(--font-mono);
  font-size: 0.6rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #fff;
  background: rgba(0, 0, 0, 0.55);
  padding: 4px 8px;
  border-radius: 5px;
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity 0.2s;
  pointer-events: none;
}

.result.comparing .compare-tag,
.result:hover .compare-tag {
  opacity: 1;
}

.result-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 12px;
  border-top: 1px solid var(--line);
}

.result-index {
  font-size: 0.72rem;
  font-weight: 500;
  color: var(--text-3);
}

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

.act-btn {
  padding: 6px 10px;
  border: 1px solid var(--line);
  border-radius: 7px;
  font-size: 0.74rem;
  font-weight: 500;
  color: var(--text-2);
  transition: border-color 0.15s, color 0.15s, background 0.15s;
}

.act-btn:hover {
  border-color: var(--amber);
  color: var(--text);
  background: color-mix(in srgb, var(--amber) 8%, transparent);
}

.act-btn.primary {
  border-color: color-mix(in srgb, var(--amber) 55%, var(--line));
  color: var(--amber);
}

/* ── Settings overlay ───────────────────────────────────────────── */
.overlay {
  position: fixed;
  inset: 0;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.overlay-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(4, 6, 9, 0.62);
  backdrop-filter: blur(6px);
  animation: fade-in 0.2s ease;
}

@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.settings-modal {
  position: relative;
  width: min(480px, 100%);
  max-height: min(640px, calc(100dvh - 40px));
  overflow-y: auto;
  background: var(--panel);
  border: 1px solid var(--line-strong);
  border-radius: 16px;
  box-shadow: var(--shadow);
  animation: modal-in 0.22s cubic-bezier(0.2, 0.9, 0.3, 1.1);
  scrollbar-width: thin;
  scrollbar-color: var(--line-strong) transparent;
}

@keyframes modal-in {
  from {
    opacity: 0;
    transform: translateY(14px) scale(0.98);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.settings-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 22px;
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  background: var(--panel);
  z-index: 1;
}

.settings-title {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.modal-close {
  width: 30px;
  height: 30px;
  border-radius: 8px;
  border: 1px solid var(--line);
  color: var(--text-3);
  font-size: 0.8rem;
  transition: color 0.15s, border-color 0.15s, background 0.15s;
}

.modal-close:hover {
  color: var(--text);
  border-color: var(--line-strong);
  background: var(--panel-2);
}

.settings-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
  padding: 20px 22px 22px;
}

.settings-section {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.settings-label {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
}

.settings-help {
  font-size: 0.76rem;
  color: var(--text-3);
  line-height: 1.5;
  margin-top: -2px;
}

.key-field {
  position: relative;
  display: flex;
  align-items: center;
}

.key-field input {
  width: 100%;
  padding: 11px 62px 11px 13px;
  background: var(--bg-deep);
  border: 1px solid var(--line);
  border-radius: 9px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.84rem;
  transition: border-color 0.18s, box-shadow 0.18s;
}

.key-field input:focus {
  outline: none;
  border-color: var(--amber);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--amber) 18%, transparent);
}

.key-toggle {
  position: absolute;
  right: 6px;
  padding: 5px 10px;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--text-2);
  transition: color 0.15s, border-color 0.15s;
}

.key-toggle:hover {
  color: var(--text);
  border-color: var(--line-strong);
}

.settings-section > input[type="text"] {
  width: 100%;
  padding: 11px 13px;
  background: var(--bg-deep);
  border: 1px solid var(--line);
  border-radius: 9px;
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.84rem;
  transition: border-color 0.18s, box-shadow 0.18s;
}

.settings-section > input[type="text"]:focus {
  outline: none;
  border-color: var(--amber);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--amber) 18%, transparent);
}

.settings-section > input::placeholder {
  color: var(--text-3);
}

.settings-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 4px;
  border-top: 1px solid var(--line);
}

.settings-spacer {
  flex: 1;
}

.test-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-2);
  transition: border-color 0.18s, color 0.18s, background 0.18s;
}

.test-btn:hover:not(:disabled) {
  border-color: var(--cyan);
  color: var(--text);
  background: color-mix(in srgb, var(--cyan) 7%, transparent);
}

.test-btn:disabled {
  opacity: 0.55;
  cursor: wait;
}

.test-spinner {
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: 2px solid var(--line-strong);
  border-top-color: var(--cyan);
  animation: spin 0.8s linear infinite;
}

.test-btn:not(.testing) .test-spinner {
  display: none;
}

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

.ghost-btn-sm {
  padding: 9px 13px;
  border: 1px solid var(--line);
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-3);
  transition: color 0.15s, border-color 0.15s;
}

.ghost-btn-sm:hover {
  color: var(--danger);
  border-color: color-mix(in srgb, var(--danger) 45%, var(--line));
}

.primary-btn.small {
  width: auto;
  padding: 9px 20px;
  font-size: 0.88rem;
  box-shadow: 0 4px 14px color-mix(in srgb, var(--amber) 25%, transparent);
}

@media (max-width: 520px) {
  .settings-actions {
    flex-wrap: wrap;
  }

  .settings-spacer {
    flex-basis: 100%;
    order: -1;
  }
}

/* ── Toasts ─────────────────────────────────────────────────────── */
.toasts {
  position: fixed;
  top: 68px;
  right: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  z-index: 70;
  max-width: min(360px, calc(100vw - 40px));
}

.toast {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 12px 14px;
  border-radius: 10px;
  background: var(--panel-2);
  border: 1px solid var(--line-strong);
  border-left: 3px solid var(--text-3);
  color: var(--text);
  font-size: 0.84rem;
  box-shadow: var(--shadow);
  animation: toast-in 0.25s cubic-bezier(0.2, 0.9, 0.3, 1.2);
}

.toast.ok {
  border-left-color: var(--ok);
}

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

.toast .toast-msg {
  flex: 1;
}

.toast .toast-close {
  color: var(--text-3);
  font-size: 0.8rem;
  line-height: 1.2;
  padding: 0 2px;
}

.toast .toast-close:hover {
  color: var(--text);
}

@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(-8px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* ── Scrollbars ─────────────────────────────────────────────────── */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--line-strong);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-3);
}

/* ── Responsive ─────────────────────────────────────────────────── */
@media (max-width: 960px) {
  .shell {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
  }

  .rail {
    border-right: none;
    border-bottom: 1px solid var(--line);
    max-height: 42dvh;
  }

  .rail-form {
    padding: 16px;
    gap: 18px;
  }

  .stage {
    padding: 20px 16px 32px;
  }

  .toasts {
    top: auto;
    bottom: 16px;
    right: 16px;
    left: 16px;
    max-width: none;
  }
}

@media (max-width: 520px) {
  .brand-sub {
    display: none;
  }

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

  .field-row {
    grid-template-columns: 1fr 1fr;
  }
}

/* ── Mobile refinements ────────────────────────────────────────── */
html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

@media (max-width: 960px) {
  .toasts {
    bottom: calc(16px + env(safe-area-inset-bottom, 0px));
  }
}

@media (max-width: 520px) {
  /* Keep inputs at 16px so iOS Safari doesn't zoom in on focus.
     Specific selectors beat the element-level defaults above. */
  #promptInput,
  .key-field input,
  .settings-section > input[type="text"],
  select,
  input[type="number"] {
    font-size: 16px;
  }

  .topbar {
    height: calc(56px + env(safe-area-inset-top, 0px));
    padding: env(safe-area-inset-top, 0px) 12px 0;
  }

  .theme-label {
    display: none;
  }

  .ghost-btn {
    padding: 8px 10px;
  }

  .upload-zone {
    padding: 20px 12px;
  }

  .stage {
    padding: 16px 12px 28px;
  }

  /* Settings slides up as a bottom sheet on phones */
  .overlay {
    padding: 0;
    align-items: flex-end;
  }

  .settings-modal {
    width: 100%;
    max-height: calc(100dvh - env(safe-area-inset-top, 0px));
    border-radius: 18px 18px 0 0;
    border-bottom: none;
  }

  .settings-form {
    padding-bottom: calc(24px + env(safe-area-inset-bottom, 0px));
  }
}

@media (max-width: 400px) {
  .brand-name {
    font-size: 0.95rem;
  }

  .brand-mark {
    width: 18px;
    height: 18px;
  }
}

/* ── Reduced motion ─────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}