/* Studio: hero and results on the left, a sticky composer panel on the right. */
.studio { display: grid; grid-template-columns: minmax(0, 1fr) 400px; grid-template-areas: "hero comp" "res comp"; grid-template-rows: auto 1fr; gap: 40px 40px; padding: 40px max(40px, env(safe-area-inset-right, 0px)) 64px 40px; align-items: start; }
.hero { grid-area: hero; display: grid; gap: 16px; padding-top: 24px; }
.hero-eyebrow { display: inline-flex; align-items: center; gap: 8px; }
.hero-eyebrow::before { content: ""; width: 6px; height: 6px; border-radius: var(--radius-full); background: var(--violet); }
.hero .t-display { font-size: 56px; line-height: 58px; }
.hero-sub { max-width: 52ch; color: var(--text-muted); font: 400 16px/25px var(--font-sans); }

/* Composer */
.composer-wrap { grid-area: comp; position: sticky; top: 24px; display: flex; flex-direction: column; gap: 10px; height: calc(100dvh - 48px); min-height: 560px; max-height: 920px; }
.composer-head { display: flex; justify-content: space-between; align-items: center; padding: 0 4px; }
.composer-cost { font: 500 11px/14px var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--violet-text); }
.composer { flex: 1; min-height: 0; display: flex; flex-direction: column; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); box-shadow: var(--shadow-float); }
.composer-scroll { flex: 1; min-height: 0; overflow-y: auto; display: flex; flex-direction: column; gap: 18px; padding: 16px; scrollbar-width: thin; }
.composer-foot { display: grid; gap: 8px; padding: 14px 16px 16px; border-top: 1px solid var(--line); }
.composer-note { padding: 0 4px; font: 400 12px/16px var(--font-sans); color: var(--text-muted); }
.generate { padding-block: 15px; }
.generate .ic { width: 18px; height: 18px; }
.gen-hint { text-align: center; }

/* Mode dropdown */
.mode { position: relative; }
.mode-btn { display: flex; align-items: center; gap: 12px; width: 100%; padding: 12px 14px; border: 1px solid var(--line-strong); border-radius: var(--radius-md); background: var(--surface-2); color: var(--text); text-align: left; cursor: pointer; transition: border-color .16s ease-out; }
.mode-btn:hover, .mode-btn[aria-expanded="true"] { border-color: var(--violet-text); }
.mode-btn > .ic:first-child { color: var(--violet-text); }
.mode-btn-label { flex: 1; font: 600 15px/20px var(--font-sans); }
.mode-btn .ic:last-child { width: 16px; height: 16px; color: var(--text-muted); transition: transform .16s ease-out; }
.mode-btn[aria-expanded="true"] .ic:last-child { transform: rotate(180deg); }
.mode-menu { position: absolute; z-index: 5; top: calc(100% + 6px); left: 0; right: 0; margin: 0; padding: 6px; list-style: none; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--surface); box-shadow: var(--shadow-float); outline: none; }
.mode-opt { display: grid; grid-template-columns: 18px 1fr auto; gap: 2px 12px; align-items: center; padding: 10px 12px; border-radius: var(--radius-sm); cursor: pointer; outline: none; }
.mode-opt .ic { grid-row: span 2; color: var(--text-muted); }
.mode-opt-name { font: 500 14px/20px var(--font-sans); }
.mode-opt-meta { grid-column: 3; grid-row: 1; font: 500 11px/16px var(--font-mono); color: var(--text-muted); }
.mode-opt-desc { grid-column: 2 / 4; font: 400 12px/16px var(--font-sans); color: var(--text-muted); }
.mode-opt:hover, .mode-opt:focus-visible { background: var(--surface-2); }
.mode-opt[aria-selected="true"] { background: var(--violet-wash); }
.mode-opt[aria-selected="true"] .ic { color: var(--violet-text); }
.mode-opt:focus-visible { box-shadow: inset 0 0 0 2px var(--focus); }
.mode-desc { margin-top: -8px; font: 400 12px/17px var(--font-sans); color: var(--text-muted); }

/* Segmented controls built from chips */
.opts { display: flex; flex-wrap: wrap; gap: 8px; }
.seg { display: inline-flex; gap: 2px; padding: 3px; border: 1px solid var(--line); border-radius: var(--radius-full); background: var(--surface-2); }
.seg .kp-chip { border-color: transparent; background: transparent; padding: 6px 12px; gap: 6px; }
.seg .kp-chip .ic { width: 14px; height: 14px; }
.seg .kp-chip.is-on { background: var(--violet-wash); border-color: var(--violet-text); }

/* Template */
.tpl-bar { display: flex; }
.tpl-pick { font: 500 13px/18px var(--font-sans); color: var(--violet-text); }
.tpl-pick::after { content: " →"; }
.tpl-pick:hover { text-decoration: underline; text-underline-offset: 3px; }
.tpl-on { display: inline-flex; align-items: center; gap: 10px; max-width: 100%; padding: 4px 4px 4px 12px; border: 1px solid var(--violet-text); border-radius: var(--radius-full); background: var(--violet-wash); }
.tpl-on-label { font: 500 11px/16px var(--font-mono); letter-spacing: .06em; text-transform: uppercase; color: var(--violet-text); }
.tpl-on-name { font: 500 13px/18px var(--font-sans); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; min-width: 0; }
.tpl-on-x { padding: 4px 10px; border: 0; border-radius: var(--radius-full); background: transparent; color: var(--text-muted); font: 500 12px/16px var(--font-sans); cursor: pointer; }
.tpl-on-x:hover { color: var(--text); background: var(--surface-2); }

/* Fields */
.step { display: grid; gap: 8px; }
.field-label { font: 500 13px/18px var(--font-sans); color: var(--text); }
.optional { color: var(--text-muted); font-weight: 400; margin-left: 4px; }
.field-hint { font: 400 12px/16px var(--font-sans); color: var(--text-muted); }
.field-hint:empty { display: none; }
.field-hint.is-error { color: var(--status-failed); }
.link-row { display: flex; gap: 8px; align-items: center; padding: 4px 4px 4px 14px; border: 1px solid var(--line-strong); border-radius: var(--radius-full); background: var(--surface-2); }
.link-row:focus-within { border-color: var(--violet-text); }
.link-row.is-error { border-color: var(--status-failed); }
.link-input { flex: 1; min-width: 0; border: 0; background: transparent; color: var(--text); font: 400 14px/20px var(--font-sans); padding: 6px 0; outline: none; }
.link-input::placeholder { color: var(--text-muted); }
.picked { display: flex; align-items: center; gap: 4px; }
.picked .kp-product { flex: 1; min-width: 0; max-width: none; }

.step-prompt { flex: 1; grid-template-rows: auto 1fr; min-height: 150px; }
.prompt { width: 100%; height: 100%; min-height: 110px; resize: none; padding: 12px 14px; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--surface-2); color: var(--text); font: 400 14px/21px var(--font-sans); outline: none; }
.prompt::placeholder { color: var(--text-muted); }
.prompt:focus { border-color: var(--violet-text); }

/* Upload slots */
.slot { display: grid; gap: 8px; }
.slot + .slot { margin-top: 6px; }
.slot-head { display: flex; justify-content: space-between; align-items: baseline; gap: 8px; }
.slot-count { font: 500 11px/16px var(--font-mono); color: var(--text-muted); }
.slot-files { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.slot-file, .slot-add { position: relative; aspect-ratio: 1; border-radius: var(--radius-sm); overflow: hidden; }
.slot-file { background: var(--media); }
.slot-file img, .slot-file video { width: 100%; height: 100%; object-fit: cover; display: block; }
.slot-file button { position: absolute; top: 4px; right: 4px; display: grid; place-items: center; width: 22px; height: 22px; padding: 0; border: 0; border-radius: var(--radius-full); background: rgba(5,5,6,.75); color: #f2f1ec; cursor: pointer; }
.slot-file button .ic { width: 12px; height: 12px; }
.slot-add { display: grid; place-content: center; justify-items: center; gap: 6px; border: 1px dashed var(--line-strong); background: transparent; color: var(--text-muted); font: 500 11px/14px var(--font-sans); cursor: pointer; transition: color .16s ease-out, border-color .16s ease-out; }
.slot-add:hover, .slot-add.is-drag { color: var(--text); border-color: var(--violet-text); }
.slot-add .ic { width: 18px; height: 18px; }
.slot-wide .slot-files { grid-template-columns: 1fr; }
.slot-wide .slot-file, .slot-wide .slot-add { aspect-ratio: 16 / 7; }

/* Results */
.results { grid-area: res; display: grid; gap: 16px; }
.results-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px; padding-bottom: 12px; border-bottom: 1px solid var(--line); }
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 24px 16px; align-items: start; }
.empty { padding: 48px 0; text-align: center; }
.kp-video.is-new .kp-video-frame { outline: 1px solid var(--violet-text); outline-offset: 3px; }
.kp-video-prompt { font: 400 12px/17px var(--font-sans); color: var(--text-muted); display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }

@media (max-width: 1240px) {
  .studio { grid-template-columns: minmax(0, 1fr) 360px; gap: 32px; padding-inline: 32px; }
  .hero .t-display { font-size: 44px; line-height: 48px; }
}
@media (max-width: 1040px) {
  .studio { grid-template-columns: minmax(0, 1fr); grid-template-areas: "hero" "comp" "res"; grid-template-rows: none; }
  .composer-wrap { position: static; height: auto; min-height: 0; max-height: none; }
  .composer-scroll { overflow: visible; }
  .hero { padding-top: 0; }
}
@media (max-width: 860px) {
  .studio { gap: 24px; padding: 24px max(16px, env(safe-area-inset-right, 0px)) calc(32px + env(safe-area-inset-bottom, 0px)) max(16px, env(safe-area-inset-left, 0px)); }
  .hero .t-display { font-size: 34px; line-height: 38px; }
  .hero-sub { font-size: 15px; line-height: 23px; }
  .composer-scroll { padding: 14px; }
  .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px 12px; }
}

/* Generator tabs, engine and voice pickers */
.gen-tabs { display: grid; grid-template-columns: repeat(4, 1fr); gap: 2px; padding: 3px; border: 1px solid var(--line); border-radius: var(--radius-full); background: var(--surface-2); }
.gen-tab { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 7px 8px; border: 0; border-radius: var(--radius-full); background: transparent; color: var(--text-muted); font: 500 13px/18px var(--font-sans); cursor: pointer; }
.gen-tab .ic { width: 15px; height: 15px; }
.gen-tab:hover { color: var(--text); }
.gen-tab[aria-selected="true"] { background: var(--surface); color: var(--text); box-shadow: 0 0 0 1px var(--line-strong); }
.gen-tab[aria-selected="true"] .ic { color: var(--violet-text); }
.engine { display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 12px; }
.select { width: 100%; padding: 9px 36px 9px 14px; border: 1px solid var(--line-strong); border-radius: var(--radius-full); background: var(--surface-2) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%239a9a9f' stroke-width='2'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E") no-repeat right 12px center / 14px; color: var(--text); font: 500 13px/18px var(--font-sans); appearance: none; cursor: pointer; }
.select:focus-visible { outline: 2px solid var(--focus); outline-offset: 2px; }
.fixed-dur { display: inline-flex; align-items: center; padding: 0 12px; border: 1px dashed var(--line-strong); border-radius: var(--radius-full); font: 500 12px/30px var(--font-mono); color: var(--text-muted); }
.results-tools { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.slot-file.is-uploading::after { content: ""; position: absolute; inset: 0; background: rgba(5,5,6,.55) linear-gradient(110deg, transparent 35%, rgba(117,0,255,.25) 50%, transparent 65%) 0 0 / 300% 100%; animation: kp-sweep 1.6s linear infinite; }