/* หน้าเข้าสู่ระบบ (web/login.html) — ไฟล์นี้เปิดได้โดยไม่ล็อกอิน */
:root {
  --navy: #0d3b66; --blue: #0077b6; --text: #0f172a; --muted: #64748b; --line: #cbd5e1; --bg: #f1f5f9; --panel: #ffffff;
  --err: #b91c1c; --warn-bg: #fff7ed; --warn-line: #fdba74; --warn-text: #9a3412;
}
* { box-sizing: border-box; margin: 0; }
[hidden] { display: none !important; }
html, body { height: 100%; }
body { font-family: 'Prompt', 'Kanit', -apple-system, sans-serif; background: var(--bg); color: var(--text); }

.login-shell { min-height: 100%; display: grid; grid-template-columns: minmax(280px, 1fr) minmax(320px, 480px); }
.login-brand {
  background: linear-gradient(150deg, #0d3b66 0%, #0f5c8f 62%, #0089b8 100%); color: #fff;
  display: flex; flex-direction: column; align-items: center; justify-content: center; text-align: center; padding: 2rem;
}
.login-brand img { width: 128px; height: 128px; border-radius: 50%; background: #fff; padding: 6px; object-fit: contain; }
.login-brand h2 { font-size: 1.6rem; margin-top: 1.25rem; font-weight: 700; }
.login-brand p { margin-top: 0.5rem; line-height: 1.6; opacity: 0.9; }

.login-panel { background: var(--panel); display: flex; flex-direction: column; justify-content: center; padding: 2.5rem clamp(1.25rem, 5vw, 3.5rem); }
.login-logo-sm { display: none; width: 72px; height: 72px; object-fit: contain; margin: 0 auto 1rem; }
.login-panel h1 { font-size: 1.5rem; color: var(--navy); font-weight: 700; }
.login-sub { color: var(--muted); font-size: 0.9rem; margin: 0.25rem 0 1.5rem; }

.login-field { display: block; font-size: 0.875rem; font-weight: 500; margin-bottom: 1rem; }
.login-field input {
  display: block; width: 100%; height: 46px; margin-top: 0.35rem; padding: 0 0.85rem; font: inherit; font-weight: 400; font-size: 1rem;
  color: var(--text); background: #fff; border: 1px solid var(--line); border-radius: 8px;
}
.login-field input::placeholder { color: #94a3b8; font-size: 0.85rem; }
.login-field input:focus { outline: 2px solid var(--blue); outline-offset: 1px; border-color: var(--blue); }
.login-pw { position: relative; display: block; }
.login-pw input { padding-right: 3rem; }
.login-eye {
  position: absolute; top: 0; right: 0; width: 46px; height: 46px; border: none; background: none;
  color: var(--muted); cursor: pointer; border-radius: 8px;
}
.login-eye:focus-visible { outline: 2px solid var(--blue); }

.login-error { min-height: 1.3em; color: var(--err); font-size: 0.875rem; margin-bottom: 0.5rem; }
.login-submit {
  width: 100%; height: 48px; border: none; border-radius: 8px; background: var(--navy); color: #fff;
  font: inherit; font-weight: 600; font-size: 1rem; cursor: pointer;
}
.login-submit:hover { background: #0a2f52; }
.login-submit:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.login-submit:disabled { opacity: 0.65; cursor: default; }
.login-hint { margin-top: 1rem; color: var(--muted); font-size: 0.8rem; text-align: center; }

.login-note { color: var(--muted); text-align: center; }
.login-note.is-warn {
  display: flex; gap: 0.75rem; text-align: left; background: var(--warn-bg); border: 1px solid var(--warn-line);
  color: var(--warn-text); padding: 1rem; border-radius: 8px; font-size: 0.9rem; line-height: 1.5;
}
.login-insecure { margin-top: 1.5rem; font-size: 0.75rem; color: var(--warn-text); text-align: center; }

@media (max-width: 760px) {
  .login-shell { grid-template-columns: 1fr; }
  .login-brand { display: none; }
  .login-logo-sm { display: block; }
  .login-panel { justify-content: flex-start; padding-top: 2.5rem; min-height: 100%; }
}