/* =========================================================
   APP-SHARED.CSS
   Shared tool-widget styles used by every preview app page
   (x-post.html, insta-post.html, and future preview apps).
   Platform-specific mockup cards (e.g. .x-card, .insta-card)
   live in their own page-specific stylesheet.
   Reuses tokens defined in css/style.css.
========================================================= */

/* breadcrumb */
.breadcrumb{
  display:flex;flex-wrap:wrap;gap:8px;align-items:center;
  font-size:.78rem;color:var(--muted);
  margin-bottom:20px;
}
.breadcrumb a{text-decoration:none;color:var(--muted);}
.breadcrumb a:hover{color:var(--blue-ink);}
.breadcrumb span[aria-current]{color:var(--ink);font-weight:600;}

/* app hero */
.app-hero{padding:56px 0 40px;}
.app-hero__title{font-size:clamp(2rem,4vw,3rem);max-width:720px;}
.app-hero__subtitle{color:var(--muted);font-size:1.05rem;max-width:600px;margin-bottom:8px;}

/* small / text button variants */
.btn--sm{padding:9px 16px;font-size:.85rem;}
.btn--text{
  background:none;border:none;color:var(--muted);
  padding:9px 6px;text-decoration:underline;text-underline-offset:3px;
  cursor:pointer;
}
.btn--text:hover{color:var(--ink);}

/* ============ TOOL LAYOUT ============ */
.app-tool{padding-top:24px;}
.app-tool__grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:28px;
  align-items:start;
}
@media (max-width:960px){
  .app-tool__grid{grid-template-columns:1fr;}
}

.app-form__body{padding:22px 22px 24px;display:flex;flex-direction:column;gap:18px;}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:14px;}
@media (max-width:520px){.field-row{grid-template-columns:1fr;}}
.field{display:flex;flex-direction:column;gap:8px;}
.field label{font-size:.72rem;color:var(--muted);}
.field input[type="text"], .field input[type="number"]{
  font-family:var(--font-body);
  font-size:.92rem;
  padding:10px 12px;
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  background:var(--bg);
  color:var(--ink);
  outline:none;
  transition:border-color .15s ease;
  width:100%;
}
.field input[type="text"]:focus, .field input[type="number"]:focus{border-color:var(--blue);}
.field--toggle{flex-direction:row;align-items:center;justify-content:space-between;}
.field--toggle label:first-child{margin:0;}

.upload-row{display:flex;align-items:center;gap:6px;flex-wrap:wrap;}

/* switch toggle */
.switch{display:inline-flex;cursor:pointer;}
.switch input{position:absolute;opacity:0;width:0;height:0;}
.switch__track{
  width:40px;height:22px;border-radius:20px;
  background:var(--border-strong);
  position:relative;
  transition:background .18s ease;
}
.switch__thumb{
  position:absolute;top:2px;left:2px;
  width:18px;height:18px;border-radius:50%;
  background:#fff;box-shadow:var(--shadow-card);
  transition:transform .18s ease;
}
.switch input:checked + .switch__track{background:var(--blue);}
.switch input:checked + .switch__track .switch__thumb{transform:translateX(18px);}

/* textarea + char ring */
.textarea-wrap{position:relative;}
.field textarea{
  width:100%;
  font-family:var(--font-body);
  font-size:.95rem;
  padding:12px 44px 12px 12px;
  border:1px solid var(--border);
  border-radius:var(--radius-sm);
  background:var(--bg);
  color:var(--ink);
  resize:vertical;
  outline:none;
  transition:border-color .15s ease;
}
.field textarea:focus{border-color:var(--blue);}
.char-ring{position:absolute;bottom:10px;right:8px;transform:rotate(-90deg);}
.char-ring__bg{fill:none;stroke:var(--border-strong);stroke-width:3;}
.char-ring__fg{
  fill:none;stroke:var(--blue);stroke-width:3;stroke-linecap:round;
  stroke-dasharray:94.2;stroke-dashoffset:0;
  transition:stroke-dashoffset .15s ease, stroke .15s ease;
}
.char-count{font-size:.72rem;color:var(--muted);margin:0;}
.char-count.is-warn{color:var(--amber);}
.char-count.is-over{color:var(--red);font-weight:600;}

/* dropzone */
.dropzone{
  border:1.5px dashed var(--border-strong);
  border-radius:var(--radius-sm);
  padding:20px;
  text-align:center;
  cursor:pointer;
  background:var(--bg);
  transition:border-color .15s ease, background .15s ease;
}
.dropzone:hover, .dropzone.is-dragover{
  border-color:var(--blue);
  background:#EEF3FF;
}
.dropzone p{margin:0;font-size:.8rem;color:var(--muted);}
.image-preview-row{display:flex;align-items:center;gap:10px;margin-top:10px;}
.image-preview-row img{
  width:56px;height:56px;object-fit:cover;border-radius:8px;border:1px solid var(--border);
}

/* segmented control */
.segmented{display:inline-flex;flex-wrap:wrap;border:1px solid var(--border);border-radius:20px;padding:3px;background:var(--bg);}
.segmented__btn{
  border:none;background:none;padding:6px 16px;border-radius:16px;
  font-size:.82rem;font-weight:600;color:var(--muted);cursor:pointer;
  transition:all .15s ease;
}
.segmented__btn.is-active{background:var(--ink);color:#fff;}

.app-form__actions{display:flex;gap:10px;flex-wrap:wrap;padding-top:4px;}
.form-note{font-size:.7rem;color:var(--muted);margin:0;}

/* ============ PREVIEW STAGE (shared) ============ */
.app-preview{position:sticky;top:96px;}
.app-preview__stage{
  padding:26px 20px;
  background:var(--bg);
  transition:background .2s ease;
  display:flex;
  justify-content:center;
}
.app-preview__stage.is-dark{background:#000;}

/* ============ SAFE ZONES (shared "why it matters" grid) ============ */
.safe-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px;margin-top:32px;}
@media (max-width:860px){.safe-grid{grid-template-columns:1fr;}}
.safe-card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-md);padding:22px;
}
.safe-card h3{font-size:1rem;margin-bottom:8px;}
.safe-card p{color:var(--muted);font-size:.9rem;margin:0;}

/* ============ TIPS (shared) ============ */
.tips-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px;margin-top:32px;}
@media (max-width:960px){.tips-grid{grid-template-columns:repeat(2,1fr);}}
@media (max-width:560px){.tips-grid{grid-template-columns:1fr;}}
.tips-card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-md);padding:20px;position:relative;
}
.tips-card__mark{
  color:var(--blue-ink);font-size:.78rem;display:block;margin-bottom:10px;
}
.tips-card h3{font-size:.95rem;margin-bottom:6px;}
.tips-card p{color:var(--muted);font-size:.86rem;margin:0;}

/* ============ RELATED (shared) ============ */
.related-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;margin-top:32px;}
@media (max-width:760px){.related-grid{grid-template-columns:repeat(2,1fr);}}
.related-card{
  display:flex;align-items:center;gap:12px;
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-md);padding:16px 18px;
  text-decoration:none;color:var(--ink);font-weight:600;font-size:.92rem;
  transition:transform .18s ease, box-shadow .18s ease;
}
.related-card:hover{transform:translateY(-3px);box-shadow:var(--shadow-card-hover);}
.related-card .platform-mark{width:34px;height:34px;font-size:.85rem;border-radius:8px;}