:root {
  --bg: #f4f1ea;
  --panel: #ffffff;
  --panel-2: #faf8f2;
  --ink: #1a1622;
  --ink-soft: #6a6478;
  --border: #e3ded2;
  --accent: #ff4d6d;
  --accent-2: #ffb347;
  --accent-3: #7c5cff;
  --glow: rgba(255, 77, 109, 0.25);
  --chip-bg: #efe9dc;
  --shadow: 0 10px 40px rgba(40, 30, 60, 0.10);
}

.dark-theme {
  --bg: #0d0a12;
  --panel: #17131f;
  --panel-2: #1e1929;
  --ink: #f3eefb;
  --ink-soft: #9d92b3;
  --border: #2a2338;
  --accent: #ff5c86;
  --accent-2: #ffcf6b;
  --accent-3: #9d7bff;
  --glow: rgba(157, 123, 255, 0.35);
  --chip-bg: #221b30;
  --shadow: 0 14px 50px rgba(0, 0, 0, 0.5);
}

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

body {
  font-family: 'Bricolage Grotesque', system-ui, sans-serif;
  background: var(--bg);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
  transition: background 0.4s ease, color 0.4s ease;
}

.app-shell {
  position: relative;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ambient orbs */
.bg-orbs { position: fixed; inset: 0; overflow: hidden; z-index: 0; pointer-events: none; }
.orb { position: absolute; border-radius: 50%; filter: blur(80px); opacity: 0.5; }
.orb-a { width: 40vw; height: 40vw; background: var(--accent); top: -10vw; left: -8vw; animation: float 18s ease-in-out infinite; }
.orb-b { width: 35vw; height: 35vw; background: var(--accent-3); bottom: -12vw; right: -6vw; animation: float 22s ease-in-out infinite reverse; }
.orb-c { width: 28vw; height: 28vw; background: var(--accent-2); top: 40%; left: 55%; opacity: 0.3; animation: float 26s ease-in-out infinite; }
@keyframes float {
  0%,100% { transform: translate(0,0) scale(1); }
  50% { transform: translate(4vw, -3vw) scale(1.1); }
}

/* header */
.hdr {
  position: relative; z-index: 2;
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px clamp(16px, 5vw, 60px);
  max-width: 1100px; margin: 0 auto;
}
.hdr-left { display: flex; align-items: center; gap: 14px; }
.logo-mark {
  width: 46px; height: 46px; display: grid; place-items: center;
  font-size: 26px; border-radius: 14px; color: #fff;
  background: linear-gradient(135deg, var(--accent), var(--accent-3));
  box-shadow: 0 6px 20px var(--glow);
  animation: spin 12s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.title {
  font-size: 30px; font-weight: 800; letter-spacing: -0.03em;
  background: linear-gradient(120deg, var(--accent), var(--accent-2), var(--accent-3));
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.tag { font-size: 12px; color: var(--ink-soft); font-weight: 300; letter-spacing: 0.06em; }
.theme-btn {
  width: 44px; height: 44px; border-radius: 12px; cursor: pointer;
  background: var(--panel); border: 1px solid var(--border); color: var(--ink);
  font-size: 20px; transition: transform 0.2s, background 0.3s;
}
.theme-btn:hover { transform: scale(1.08) rotate(15deg); }

/* main */
.main {
  position: relative; z-index: 1;
  max-width: 1100px; margin: 0 auto;
  padding: 0 clamp(16px, 5vw, 60px) 60px;
}

/* prompt card */
.prompt-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 22px;
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}
.prompt-input {
  width: 100%; resize: vertical;
  background: var(--panel-2); color: var(--ink);
  border: 1px solid var(--border); border-radius: 16px;
  padding: 16px; font-size: 17px; font-family: inherit; line-height: 1.5;
  outline: none; transition: border 0.2s, box-shadow 0.2s;
}
.prompt-input::placeholder { color: var(--ink-soft); opacity: 0.7; }
.prompt-input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px var(--glow); }

.chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.chip {
  font-family: inherit; font-size: 13px; font-weight: 500; cursor: pointer;
  padding: 7px 13px; border-radius: 999px;
  background: var(--chip-bg); color: var(--ink-soft);
  border: 1px solid transparent; transition: all 0.18s;
}
.chip:hover { color: var(--ink); transform: translateY(-1px); }
.chip-on {
  color: #fff; border-color: transparent;
  background: linear-gradient(120deg, var(--accent), var(--accent-3));
  box-shadow: 0 4px 14px var(--glow);
}

.opts-row {
  display: flex; flex-wrap: wrap; gap: 12px; align-items: center;
  margin-top: 18px;
}
.seg-group { display: flex; gap: 4px; background: var(--chip-bg); padding: 4px; border-radius: 12px; }
.seg {
  font-family: inherit; font-size: 12px; font-weight: 500; cursor: pointer;
  display: inline-flex; align-items: center; gap: 6px;
  padding: 7px 12px; border-radius: 9px; border: none;
  background: transparent; color: var(--ink-soft); transition: all 0.18s;
}
.seg-on { background: var(--panel); color: var(--ink); box-shadow: 0 2px 8px rgba(0,0,0,0.12); }
.seg-icon { display: inline-block; border: 1.6px solid currentColor; border-radius: 2px; }
.as-1-1 { width: 12px; height: 12px; }
.as-3-4 { width: 10px; height: 13px; }
.as-16-9 { width: 15px; height: 9px; }

.enh-toggle {
  display: inline-flex; align-items: center; gap: 8px; cursor: pointer;
  font-size: 13px; font-weight: 500; color: var(--ink-soft);
  padding: 7px 13px; border-radius: 999px; border: 1px solid var(--border);
  background: var(--chip-bg); transition: all 0.2s; user-select: none;
}
.enh-dot { width: 10px; height: 10px; border-radius: 50%; background: var(--ink-soft); transition: all 0.2s; }
.enh-on { color: var(--ink); border-color: var(--accent-2); }
.enh-on .enh-dot { background: var(--accent-2); box-shadow: 0 0 10px var(--accent-2); }

.action-row { display: flex; gap: 12px; margin-top: 20px; }
.surprise-btn {
  font-family: inherit; font-size: 15px; font-weight: 500; cursor: pointer;
  padding: 14px 22px; border-radius: 14px;
  background: var(--panel-2); color: var(--ink); border: 1px solid var(--border);
  transition: all 0.2s; white-space: nowrap;
}
.surprise-btn:hover { transform: translateY(-2px); border-color: var(--accent-2); }
.gen-btn {
  flex: 1; font-family: inherit; font-size: 16px; font-weight: 700; cursor: pointer;
  padding: 14px 22px; border-radius: 14px; color: #fff; border: none;
  background: linear-gradient(120deg, var(--accent), var(--accent-3));
  box-shadow: 0 8px 26px var(--glow); transition: all 0.2s;
  letter-spacing: 0.01em;
}
.gen-btn:hover:not(:disabled) { transform: translateY(-2px) scale(1.01); box-shadow: 0 12px 34px var(--glow); }
.gen-btn:active:not(:disabled) { transform: scale(0.98); }
.gen-btn:disabled { opacity: 0.5; cursor: not-allowed; }
.gen-busy { background-size: 200% 200%; animation: pulseBg 1.4s ease infinite; }
@keyframes pulseBg { 0%,100% { background-position: 0% 50%; } 50% { background-position: 100% 50%; } }

.hint { font-size: 12px; color: var(--ink-soft); margin-top: 12px; text-align: center; font-weight: 300; }

/* stage */
.stage { margin-top: 30px; display: flex; flex-direction: column; align-items: center; }

.empty { text-align: center; padding: 40px 10px; }
.empty-icon { font-size: 52px; color: var(--accent-3); animation: bob 3s ease-in-out infinite; }
@keyframes bob { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
.empty-title { font-size: 24px; font-weight: 700; margin-top: 8px; }
.empty-sub { color: var(--ink-soft); margin: 6px 0 16px; }
.empty-chips { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; max-width: 640px; margin: 0 auto; }
.example-chip {
  font-family: inherit; font-size: 13px; cursor: pointer;
  padding: 9px 14px; border-radius: 12px; color: var(--ink-soft);
  background: var(--panel); border: 1px dashed var(--border); transition: all 0.2s;
}
.example-chip:hover { color: var(--ink); border-color: var(--accent); transform: translateY(-2px); }

.result-wrap {
  position: relative; width: 100%; max-width: 560px;
  border-radius: 22px; overflow: hidden;
  background: var(--panel-2); border: 1px solid var(--border);
  box-shadow: var(--shadow); display: grid; place-items: center;
}
.result-wrap.as-1-1 { aspect-ratio: 1/1; }
.result-wrap.as-3-4 { aspect-ratio: 3/4; max-width: 460px; }
.result-wrap.as-16-9 { aspect-ratio: 16/9; }

.result-img { width: 100%; height: 100%; object-fit: cover; cursor: zoom-in; display: block; }
.img-hidden { opacity: 0; }
.img-in { animation: imgIn 0.7s cubic-bezier(.2,.8,.2,1) both; }
@keyframes imgIn { from { opacity: 0; transform: scale(1.04); filter: blur(8px); } to { opacity: 1; transform: scale(1); filter: blur(0); } }

.loader { position: absolute; inset: 0; display: grid; place-items: center; }
.shimmer {
  position: absolute; inset: 0;
  background: linear-gradient(110deg, var(--panel-2) 8%, var(--chip-bg) 18%, var(--panel-2) 33%);
  background-size: 220% 100%; animation: shim 1.3s linear infinite;
}
@keyframes shim { to { background-position: -220% 0; } }
.load-msg {
  position: relative; z-index: 2; font-size: 15px; font-weight: 500;
  color: var(--ink); background: var(--panel); padding: 10px 18px;
  border-radius: 999px; box-shadow: var(--shadow); border: 1px solid var(--border);
}

.err-box { padding: 40px 24px; text-align: center; }
.err-title { font-size: 20px; font-weight: 700; }
.err-sub { color: var(--ink-soft); margin: 8px 0 18px; }
.retry-btn {
  font-family: inherit; font-weight: 600; cursor: pointer; color: #fff; border: none;
  padding: 12px 24px; border-radius: 12px;
  background: linear-gradient(120deg, var(--accent), var(--accent-3));
}

/* sparkle burst */
.sparkle-burst { position: absolute; inset: 0; pointer-events: none; display: grid; place-items: center; }
.spark {
  position: absolute; width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent-2); box-shadow: 0 0 10px var(--accent-2);
  animation: burst 1s ease-out forwards;
  transform: rotate(calc(var(--i) * 30deg)) translateY(0);
}
@keyframes burst {
  0% { opacity: 1; transform: rotate(calc(var(--i) * 30deg)) translateY(0) scale(1); }
  100% { opacity: 0; transform: rotate(calc(var(--i) * 30deg)) translateY(-140px) scale(0.2); }
}

.result-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; justify-content: center; }
.act {
  font-family: inherit; font-size: 14px; font-weight: 500; cursor: pointer;
  padding: 10px 16px; border-radius: 12px;
  background: var(--panel); color: var(--ink); border: 1px solid var(--border);
  transition: all 0.18s;
}
.act:hover { transform: translateY(-2px); border-color: var(--accent); color: var(--accent); }
.act-close:hover { border-color: var(--ink-soft); color: var(--ink-soft); }

/* gallery */
.gallery-sec { margin-top: 50px; }
.gallery-head { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 16px; }
.gallery-title { font-size: 20px; font-weight: 700; }
.clear-btn {
  font-family: 'JetBrains Mono', monospace; font-size: 12px; cursor: pointer;
  background: none; border: none; color: var(--ink-soft); text-decoration: underline;
}
.clear-btn:hover { color: var(--accent); }
.gallery-grid {
  display: grid; gap: 12px;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
}
.gitem {
  position: relative; padding: 0; border: none; cursor: pointer;
  border-radius: 16px; overflow: hidden; aspect-ratio: 1/1;
  background: var(--panel-2); box-shadow: var(--shadow); transition: transform 0.2s;
}
.gitem:hover { transform: translateY(-4px); }
.gimg { width: 100%; height: 100%; object-fit: cover; display: block; }
.gcap {
  position: absolute; left: 0; right: 0; bottom: 0;
  font-size: 11px; color: #fff; text-align: left; padding: 20px 10px 8px;
  background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  opacity: 0; transition: opacity 0.2s;
}
.gitem:hover .gcap { opacity: 1; }

/* footer */
.ftr {
  position: relative; z-index: 1;
  display: flex; flex-wrap: wrap; gap: 8px; align-items: center; justify-content: space-between;
  max-width: 1100px; margin: 0 auto; padding: 26px clamp(16px, 5vw, 60px);
  border-top: 1px solid var(--border); color: var(--ink-soft); font-size: 13px;
}
.remix-link { color: var(--accent); text-decoration: none; font-weight: 600; }
.remix-link:hover { text-decoration: underline; }

/* lightbox */
.lb-overlay {
  position: fixed; inset: 0; z-index: 50;
  background: rgba(8,5,14,0.85); backdrop-filter: blur(8px);
  display: grid; place-items: center; padding: 20px;
  animation: fadeIn 0.25s ease both;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.lb-inner {
  max-width: 680px; width: 100%; max-height: 92vh; overflow: auto;
  background: var(--panel); border: 1px solid var(--border);
  border-radius: 22px; padding: 16px; box-shadow: 0 30px 80px rgba(0,0,0,0.6);
  animation: imgIn 0.4s ease both;
}
.lb-img { width: 100%; border-radius: 14px; display: block; }
.lb-prompt { margin: 14px 4px; color: var(--ink); font-size: 15px; line-height: 1.5; }
.lb-actions { display: flex; flex-wrap: wrap; gap: 10px; }

/* toast */
.toast {
  position: fixed; bottom: 28px; left: 50%; transform: translateX(-50%);
  z-index: 60; background: var(--ink); color: var(--bg);
  padding: 12px 22px; border-radius: 999px; font-size: 14px; font-weight: 500;
  box-shadow: 0 10px 30px rgba(0,0,0,0.4);
  animation: toastIn 0.3s cubic-bezier(.2,.9,.3,1) both;
}
@keyframes toastIn { from { opacity: 0; transform: translateX(-50%) translateY(20px); } to { opacity: 1; transform: translateX(-50%) translateY(0); } }

/* entrance */
.fade-up { animation: fadeUp 0.6s cubic-bezier(.2,.8,.2,1) both; }
@keyframes fadeUp { from { opacity: 0; transform: translateY(20px); } to { opacity: 1; transform: translateY(0); } }

@media (max-width: 560px) {
  .action-row { flex-direction: column; }
  .surprise-btn { width: 100%; }
  .opts-row { flex-direction: column; align-items: stretch; }
  .seg-group { justify-content: center; }
  .title { font-size: 26px; }
}