:root {
  --green: #059669;
  --green-dark: #047857;
  --ink: #0f172a;
  --muted: #64748b;
  --line: #e2e8f0;
  --bg: #f8fafc;
  --card: #ffffff;
  --radius: 14px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg); color: var(--ink); line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}
a { color: var(--green); }
.wrap { max-width: 860px; margin: 0 auto; padding: 0 20px 80px; }

/* ── hero ── */
header.hero {
  background: linear-gradient(135deg, #064e3b 0%, #059669 55%, #0d9488 100%);
  color: #fff; padding: 46px 20px 60px; text-align: center;
}
header.hero .brand { display: inline-flex; align-items: center; gap: 10px; margin-bottom: 18px; }
header.hero img { width: 40px; height: 40px; border-radius: 10px; }
header.hero h1 { font-size: 1.9rem; font-weight: 800; letter-spacing: -0.5px; }
header.hero p { opacity: .9; margin-top: 8px; font-size: .98rem; }
.hero-actions { margin-top: 22px; display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.hero-actions a {
  background: rgba(255,255,255,.16); border: 1px solid rgba(255,255,255,.35);
  color: #fff; text-decoration: none; padding: 10px 18px; border-radius: 10px;
  font-weight: 600; font-size: .9rem; backdrop-filter: blur(4px);
}
.hero-actions a:hover { background: rgba(255,255,255,.26); }

/* ── cards / sections ── */
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px; margin-top: 22px; box-shadow: 0 1px 2px rgba(15,23,42,.04);
}
.card h2 { font-size: 1.2rem; font-weight: 800; margin-bottom: 6px; }
.card .sub { color: var(--muted); font-size: .9rem; margin-bottom: 18px; }

/* ── FAQ ── */
.faq details {
  border: 1px solid var(--line); border-radius: 10px; margin-bottom: 10px;
  background: #fff; overflow: hidden;
}
.faq summary {
  cursor: pointer; padding: 14px 16px; font-weight: 600; font-size: .95rem;
  list-style: none; display: flex; justify-content: space-between; gap: 12px; align-items: center;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--green); font-weight: 800; font-size: 1.2rem; }
.faq details[open] summary::after { content: "−"; }
.faq .answer { padding: 0 16px 14px; color: #334155; font-size: .92rem; }
.faq .answer ol, .faq .answer ul { padding-left: 20px; margin-top: 6px; }
.faq .answer li { margin-bottom: 4px; }

/* ── form ── */
.grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 640px) { .grid { grid-template-columns: 1fr; } }
label { display: block; font-size: .82rem; font-weight: 700; color: #334155; margin-bottom: 6px; }
input, select, textarea {
  width: 100%; padding: 11px 12px; border: 1px solid var(--line); border-radius: 10px;
  font: inherit; font-size: .93rem; background: #fff; color: var(--ink);
}
input:focus, select:focus, textarea:focus { outline: 2px solid rgba(5,150,105,.35); border-color: var(--green); }
textarea { min-height: 130px; resize: vertical; }
.field { margin-bottom: 14px; }
.btn {
  background: var(--green); color: #fff; border: none; padding: 13px 22px;
  border-radius: 10px; font-weight: 700; font-size: .95rem; cursor: pointer; width: 100%;
}
.btn:hover { background: var(--green-dark); }
.btn:disabled { opacity: .6; cursor: not-allowed; }
.btn.ghost { background: #fff; color: var(--green); border: 1px solid var(--green); }
.hint { font-size: .78rem; color: var(--muted); margin-top: 6px; }

/* ── notices ── */
.notice {
  border-radius: 10px; padding: 14px 16px; font-size: .9rem; margin-bottom: 16px; display: none;
}
.notice.ok { background: #ecfdf5; border: 1px solid #a7f3d0; color: #065f46; display: block; }
.notice.err { background: #fef2f2; border: 1px solid #fecaca; color: #991b1b; display: block; }
.notice.info { background: #eff6ff; border: 1px solid #bfdbfe; color: #1e40af; display: block; }
.ref-box {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 1.35rem; font-weight: 800;
  letter-spacing: 2px; color: var(--green); user-select: all;
}

/* ── ticket thread ── */
.thread { margin-top: 18px; }
.msg { border: 1px solid var(--line); border-radius: 10px; padding: 12px 14px; margin-bottom: 10px; }
msg-student { background: #f1f5f9; }
.msg .who { font-size: .75rem; font-weight: 800; text-transform: uppercase; letter-spacing: .4px; color: var(--muted); margin-bottom: 4px; }
.msg.agent .who { color: var(--green); }
.msg .body { font-size: .92rem; white-space: pre-wrap; }
.msg .when { font-size: .72rem; color: #94a3b8; margin-top: 6px; }
.badge {
  display: inline-block; font-size: .72rem; font-weight: 800; padding: 3px 9px; border-radius: 999px;
  text-transform: uppercase; letter-spacing: .4px;
}
.badge.open { background: #fef3c7; color: #92400e; }
.badge.pending { background: #e0e7ff; color: #3730a3; }
.badge.answered { background: #d1fae5; color: #065f46; }
.badge.closed { background: #e2e8f0; color: #475569; }

footer.site { text-align: center; color: var(--muted); font-size: .8rem; padding: 34px 20px 10px; }
.spacer { height: 6px; }