/* ===========================================================================
   studio.css — interactive "Curve AI Studio" content generator (Solution 04)
   Faithful HTML/CSS recreation of the dark navy + gold + serif studio (no image).
   Tokens scoped to .studio. Demonstrates idea → design → caption → publish.
   (The gold/serif palette lives ONLY inside this product demo, never the page.)
   =========================================================================== */

.studio-stage { margin: clamp(40px, 6vw, 72px) auto 0; max-width: 1180px; }

.studio {
  --s-bg: #090910;
  --s-bg2: #0c0c16;
  --s-panel: #111119;
  --s-soft: #16161f;
  --s-line: #272232;
  --s-text: #ece6d6;
  --s-text2: #9b937e;
  --s-text3: #6c6655;
  --s-gold: #d4b277;              /* aligned to the Trio Sand Gold family */
  --s-gold2: #AD8E62;
  --s-gold-soft: rgba(173, 142, 98, .14);
  --s-serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, "Times New Roman", serif;
  --s-blue: #4f9bff;

  position: relative;
  border: 1px solid var(--s-line);
  border-radius: 16px;
  background: var(--s-bg);
  color: var(--s-text);
  overflow: hidden;
  box-shadow: 0 2px 4px rgba(0,0,0,.3), 0 36px 80px -34px rgba(0,0,0,.8);
  font-size: 14px;
}

.studio-bar { display: flex; align-items: center; gap: 14px; height: 46px; padding: 0 14px; background: var(--s-panel); border-bottom: 1px solid var(--s-line); }
.studio-dots { display: inline-flex; gap: 7px; }
.studio-dots i { width: 11px; height: 11px; border-radius: 50%; background: #2a2632; }
.studio-bar-title { font-size: 12.5px; font-weight: 500; color: var(--s-text2); }

/* body + faint topographic rings */
.studio-body { position: relative; padding: clamp(18px, 2vw, 30px); background: radial-gradient(120% 80% at 50% -10%, var(--s-bg2), var(--s-bg)); overflow: hidden; }
.studio-body::before {
  content: ""; position: absolute; inset: -10%;
  background:
    repeating-radial-gradient(circle at 28% 42%, transparent 0 46px, rgba(173,142,98,.035) 46px 47px),
    repeating-radial-gradient(circle at 74% 58%, transparent 0 54px, rgba(173,142,98,.03) 54px 55px);
  pointer-events: none;
}
.studio-body > * { position: relative; z-index: 1; }

/* gold text */
.studio-gold {
  background: linear-gradient(180deg, #f4d98a, var(--s-gold) 55%, var(--s-gold2));
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}

/* top bar */
.studio-top { display: flex; align-items: center; gap: 16px; }
.studio-word { font-family: var(--s-serif); font-size: clamp(18px, 2vw, 24px); font-weight: 700; letter-spacing: .04em; }
.studio-guest { margin: 0 auto; display: inline-flex; align-items: center; gap: 10px; padding: 8px 16px; border: 1px solid var(--s-line); border-radius: 12px; background: var(--s-panel); }
.studio-guest svg { width: 18px; height: 18px; color: var(--s-gold); }
.studio-guest b { font-size: 13px; font-weight: 600; letter-spacing: .02em; }
.studio-guest small { display: block; font-size: 10.5px; letter-spacing: .08em; color: var(--s-text3); text-transform: uppercase; }
.studio-top-actions { display: flex; align-items: center; gap: 14px; }
.studio-tbtn { display: inline-flex; align-items: center; gap: 7px; font-size: 12px; font-weight: 600; letter-spacing: .08em; color: var(--s-text2); cursor: pointer; background: none; border: none; text-transform: uppercase; }
.studio-tbtn svg { width: 15px; height: 15px; }
.studio-tbtn:hover { color: var(--s-gold); }
.studio-lang b { color: var(--s-gold); }
.studio-lang span { color: var(--s-text3); }
.studio-signout { padding: 8px 14px; border: 1px solid var(--s-line); border-radius: 10px; }

/* hero */
.studio-hero { text-align: center; padding: clamp(40px, 7vw, 92px) 10px clamp(30px, 5vw, 56px); }
.studio-hero h4 { font-family: var(--s-serif); font-weight: 700; font-size: clamp(34px, 6vw, 68px); line-height: 1.04; letter-spacing: .01em; text-transform: uppercase; text-shadow: 0 0 40px rgba(173,142,98,.18); }

/* prompt bar */
.studio-prompt {
  display: flex; align-items: stretch; gap: 14px;
  max-width: 980px; margin: 0 auto; padding: 16px;
  background: linear-gradient(180deg, rgba(173,142,98,.04), var(--s-panel));
  border: 1px solid var(--s-line); border-radius: 18px;
  box-shadow: 0 0 0 1px rgba(173,142,98,.05), 0 24px 60px -30px rgba(173,142,98,.25);
}
.studio-img {
  flex: none; width: 56px; height: 56px; border-radius: 12px;
  display: grid; place-items: center; cursor: pointer;
  background: var(--s-soft); border: 1px solid var(--s-line); color: var(--s-text3);
  transition: border-color .2s, color .2s;
}
.studio-img:hover, .studio-img.has { border-color: var(--s-gold); color: var(--s-gold); }
.studio-img svg { width: 24px; height: 24px; }
.studio-input-wrap { flex: 1; min-width: 0; display: flex; flex-direction: column; }
.studio-input { width: 100%; background: none; border: none; color: var(--s-text); font: inherit; font-size: 17px; padding: 8px 4px; min-height: 44px; }
.studio-input:focus { outline: none; }
.studio-input::placeholder { color: var(--s-text3); }
.studio-attached { font-size: 12px; color: var(--s-gold); margin-top: 2px; display: none; }
.studio-attached.show { display: block; }

.studio-side { flex: none; display: flex; flex-direction: column; gap: 10px; justify-content: flex-end; }
.studio-sbtn {
  width: 44px; height: 44px; border-radius: 12px;
  display: grid; place-items: center; cursor: pointer;
  background: var(--s-soft); border: 1px solid var(--s-line); color: var(--s-text2);
  transition: border-color .2s, color .2s, background .2s;
}
.studio-sbtn svg { width: 20px; height: 20px; }
.studio-sbtn:hover { color: var(--s-gold); border-color: var(--s-gold-soft); }
.studio-sbtn.active { color: var(--s-gold); border-color: var(--s-gold); background: var(--s-gold-soft); }

/* chips + generate */
.studio-chips { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; max-width: 980px; margin: 18px auto 0; }
.studio-chip { font-size: 13px; color: var(--s-text2); background: var(--s-panel); border: 1px solid var(--s-line); border-radius: 999px; padding: 8px 16px; cursor: pointer; transition: border-color .2s, color .2s; }
.studio-chip:hover { border-color: var(--s-gold); color: var(--s-gold); }
.studio-generate {
  display: inline-flex; align-items: center; gap: 9px; margin: 22px auto 0;
  padding: 13px 26px; border: none; border-radius: 999px; cursor: pointer;
  font: inherit; font-size: 15px; font-weight: 700; letter-spacing: .02em; color: #2a1f06;
  background: linear-gradient(180deg, #f4d98a, var(--s-gold2));
  box-shadow: 0 16px 36px -16px rgba(173,142,98,.6);
  transition: transform .2s, filter .2s;
}
.studio-generate:hover { transform: translateY(-1px); filter: brightness(1.05); }
.studio-generate svg { width: 17px; height: 17px; }
.studio-genwrap { text-align: center; }

/* generating status */
.studio-status { display: none; flex-direction: column; align-items: center; gap: 14px; margin: 28px auto 0; }
.studio-status.show { display: flex; }
.studio-spin { width: 38px; height: 38px; border-radius: 50%; border: 2px solid var(--s-line); border-top-color: var(--s-gold); animation: studioSpin .8s linear infinite; }
.studio-status-txt { font-size: 14px; color: var(--s-text2); letter-spacing: .02em; }
.studio-status-txt b { color: var(--s-gold); }

/* result */
.studio-result { display: none; grid-template-columns: 340px 1fr; gap: 22px; max-width: 980px; margin: 30px auto 0; align-items: start; }
.studio-result.show { display: grid; animation: studioIn .5s var(--ease) both; }

.studio-design {
  position: relative; border-radius: 16px; overflow: hidden;
  border: 1px solid var(--s-gold-soft);
  background: linear-gradient(150deg, #1a1426, #0c0c16 60%);
  padding: 26px; aspect-ratio: 4 / 5; display: flex; flex-direction: column;
}
.studio-design::after { content: ""; position: absolute; inset: 0; background: repeating-radial-gradient(circle at 30% 20%, transparent 0 30px, rgba(173,142,98,.05) 30px 31px); pointer-events: none; }
.studio-design-badge { position: relative; z-index: 1; align-self: flex-start; font-size: 10px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--s-gold); background: var(--s-gold-soft); border: 1px solid var(--s-gold-soft); padding: 5px 10px; border-radius: 999px; }
.studio-design-title { position: relative; z-index: 1; margin-top: auto; font-family: var(--s-serif); font-weight: 700; font-size: clamp(24px, 3vw, 34px); line-height: 1.08; text-transform: uppercase; }
.studio-design-foot { position: relative; z-index: 1; display: flex; align-items: center; gap: 8px; margin-top: 18px; }
.studio-swatch { width: 18px; height: 18px; border-radius: 5px; border: 1px solid rgba(255,255,255,.15); }
.studio-design-logo { margin-left: auto; font-family: var(--s-serif); font-size: 13px; letter-spacing: .06em; color: var(--s-text2); }

.studio-caption { display: flex; flex-direction: column; gap: 16px; }
.studio-cap-head { font-size: 11px; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; color: var(--s-text3); }
.studio-cap-text { font-size: 15.5px; line-height: 1.55; color: var(--s-text); }
.studio-cap-tags { font-size: 14px; color: var(--s-gold); line-height: 1.6; }
.studio-platform-line { font-size: 13px; color: var(--s-text2); display: flex; align-items: center; gap: 8px; }
.studio-platform-line svg { width: 16px; height: 16px; color: var(--s-gold); }
.studio-result-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 4px; }
.studio-rbtn { display: inline-flex; align-items: center; gap: 8px; padding: 11px 18px; border-radius: 11px; font: inherit; font-size: 14px; font-weight: 600; cursor: pointer; transition: filter .2s, transform .2s; }
.studio-rbtn svg { width: 16px; height: 16px; }
.studio-rbtn--ghost { background: var(--s-soft); border: 1px solid var(--s-line); color: var(--s-text); }
.studio-rbtn--gold { border: none; color: #2a1f06; background: linear-gradient(180deg, #f4d98a, var(--s-gold2)); }
.studio-rbtn:hover { transform: translateY(-1px); filter: brightness(1.05); }
.studio-rbtn--gold.done { background: rgba(70,176,111,.18); color: #4fce8b; cursor: default; }
.studio-rbtn--gold.done:hover { transform: none; filter: none; }

/* footer */
.studio-foot { display: flex; align-items: center; justify-content: space-between; margin-top: 30px; }
.studio-n { width: 38px; height: 38px; border-radius: 50%; background: #15151d; border: 1px solid var(--s-line); display: grid; place-items: center; font-family: var(--s-serif); color: var(--s-text2); }
.studio-clock { width: 46px; height: 46px; border-radius: 14px; background: var(--s-soft); border: 1px solid var(--s-line); color: var(--s-gold); display: grid; place-items: center; cursor: pointer; transition: border-color .2s; }
.studio-clock:hover { border-color: var(--s-gold); }
.studio-clock svg { width: 22px; height: 22px; }

.studio-history { display: none; max-width: 980px; margin: 14px auto 0; background: var(--s-panel); border: 1px solid var(--s-line); border-radius: 14px; padding: 8px; }
.studio-history.show { display: block; }
.studio-history-h { font-size: 11px; font-weight: 700; letter-spacing: .07em; text-transform: uppercase; color: var(--s-text3); padding: 8px 12px; }
.studio-hist-item { display: flex; align-items: center; gap: 10px; padding: 10px 12px; border-radius: 9px; cursor: pointer; font-size: 13.5px; color: var(--s-text2); }
.studio-hist-item:hover { background: var(--s-soft); color: var(--s-text); }
.studio-hist-item svg { width: 15px; height: 15px; color: var(--s-text3); }
.studio-hist-empty { padding: 10px 12px; font-size: 13px; color: var(--s-text3); }

.studio-cap { margin-top: 16px; text-align: center; font-size: 13px; color: var(--text-2); }

@keyframes studioSpin { to { transform: rotate(360deg); } }
@keyframes studioIn { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }

/* responsive */
@media (max-width: 820px) {
  .studio-guest { display: none; }
  .studio-result { grid-template-columns: 1fr; }
  .studio-design { aspect-ratio: 16 / 10; max-width: 360px; }
}
@media (max-width: 560px) {
  .studio-top-actions { gap: 10px; }
  .studio-tbtn span { display: none; }
  .studio-signout span { display: inline; }
  .studio-prompt { flex-wrap: wrap; }
  .studio-side { flex-direction: row; width: 100%; justify-content: flex-end; }
}