/* ============================================
   ACADEMIC ATELIER — SUBPAGE STYLES
   ============================================ */

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

:root {
  --blue:     #2b7abf;
  --blue-dark:#1f5f96;
  --dark:     #0f172a;
  --gray-900: #111827;
  --gray-700: #374151;
  --gray-500: #6b7280;
  --gray-300: #d1d5db;
  --gray-100: #f3f4f6;
  --white:    #ffffff;
  --font:     'Inter', sans-serif;
  --radius:   10px;
  --max-w:    760px;
}

html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--gray-900); background: var(--white); line-height: 1.7; }

/* ---- Navbar ---- */
.sub-nav {
  position: sticky; top: 0; z-index: 50;
  background: var(--white);
  border-bottom: 1px solid var(--gray-100);
  height: 54px;
  display: flex; align-items: center; justify-content: space-between;
  padding: 0 40px;
  box-shadow: 0 1px 3px rgba(0,0,0,.06);
}
.sub-nav-logo {
  font-size: 14.5px; font-weight: 700; color: var(--blue);
  text-decoration: none; letter-spacing: -.3px;
}
.sub-nav-back {
  font-size: 13px; font-weight: 600; color: var(--gray-500);
  text-decoration: none; transition: color .15s;
}
.sub-nav-back:hover { color: var(--blue); }

/* ---- Main ---- */
.sub-main { min-height: calc(100vh - 54px - 64px); padding: 60px 24px 80px; }
.sub-inner { max-width: var(--max-w); margin: 0 auto; }

/* ---- Hero ---- */
.sub-hero { margin-bottom: 48px; }
.sub-tag {
  display: inline-block;
  background: #dbeafe; color: var(--blue);
  font-size: 10.5px; font-weight: 700; letter-spacing: 1.2px;
  padding: 4px 11px; border-radius: 4px; margin-bottom: 16px;
}
.sub-hero h1 {
  font-size: 38px; font-weight: 800; color: var(--dark);
  letter-spacing: -1px; line-height: 1.15; margin-bottom: 10px;
}
.sub-meta { font-size: 14px; color: var(--gray-500); }

/* ---- Body text ---- */
.sub-body h2 {
  font-size: 18px; font-weight: 700; color: var(--dark);
  margin: 36px 0 10px; letter-spacing: -.3px;
}
.sub-body h2:first-child { margin-top: 0; }
.sub-body p { font-size: 15px; color: var(--gray-700); margin-bottom: 8px; }
.sub-body a { color: var(--blue); text-decoration: underline; }
.sub-body a:hover { color: var(--blue-dark); }

/* ---- Support cards ---- */
.support-cards {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 18px; margin-bottom: 48px;
}
.support-card {
  border: 1.5px solid var(--gray-100); border-radius: var(--radius);
  padding: 24px 20px; text-align: center;
  transition: box-shadow .2s, transform .2s;
}
.support-card:hover { box-shadow: 0 4px 16px rgba(0,0,0,.1); transform: translateY(-2px); }
.support-card-icon { font-size: 30px; margin-bottom: 12px; }
.support-card h3 { font-size: 15px; font-weight: 700; color: var(--dark); margin-bottom: 8px; }
.support-card p { font-size: 13px; color: var(--gray-500); margin-bottom: 16px; }
.support-btn {
  display: inline-block;
  background: var(--blue); color: var(--white);
  font-size: 13px; font-weight: 600;
  padding: 8px 18px; border-radius: 6px;
  text-decoration: none; transition: background .2s;
}
.support-btn:hover { background: var(--blue-dark); }

/* ---- Support form ---- */
.support-form { display: flex; flex-direction: column; gap: 16px; margin-top: 20px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 12px; font-weight: 600; color: var(--gray-500); text-transform: uppercase; letter-spacing: .5px; }
.form-group input,
.form-group textarea {
  padding: 9px 13px; border: 1.5px solid var(--gray-300); border-radius: 7px;
  font-size: 14px; font-family: var(--font); color: var(--gray-900);
  outline: none; transition: border-color .2s, box-shadow .2s; resize: vertical;
}
.form-group input:focus,
.form-group textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(26,86,219,.1); }
.sub-submit-btn {
  align-self: flex-start;
  background: var(--blue); color: var(--white);
  border: none; border-radius: 7px;
  padding: 11px 28px; font-size: 14px; font-weight: 600;
  cursor: pointer; font-family: var(--font);
  transition: background .2s, transform .15s;
}
.sub-submit-btn:hover { background: var(--blue-dark); transform: translateY(-1px); }

/* ---- FAQ accordion ---- */
.faq-list { display: flex; flex-direction: column; gap: 10px; }
.faq-item {
  border: 1.5px solid var(--gray-200); border-radius: var(--radius);
  overflow: hidden;
}
.faq-item summary {
  padding: 18px 22px; font-size: 15px; font-weight: 600; color: var(--dark);
  cursor: pointer; list-style: none;
  display: flex; justify-content: space-between; align-items: center;
  transition: background .15s;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after { content: '+'; font-size: 20px; color: var(--blue); font-weight: 400; }
.faq-item[open] summary::after { content: '−'; }
.faq-item summary:hover { background: var(--gray-100); }
.faq-item p {
  padding: 0 22px 18px; font-size: 14.5px;
  color: var(--gray-700); border-top: 1px solid var(--gray-100);
  padding-top: 14px;
}
.faq-item a { color: var(--blue); }

/* ---- Footer ---- */
.sub-footer {
  background: var(--gray-100); border-top: 1px solid var(--gray-200);
  padding: 20px 40px;
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 12px;
}
.sub-footer span { font-size: 11px; color: var(--gray-500); text-transform: uppercase; letter-spacing: .4px; }
.sub-footer-links { display: flex; gap: 20px; }
.sub-footer-links a { font-size: 12.5px; color: var(--gray-500); text-decoration: none; transition: color .15s; }
.sub-footer-links a:hover { color: var(--blue); }

/* ---- URL input hint in admin ---- */
input[type="url"] { font-family: monospace !important; font-size: 12.5px !important; }