:root {
  --brand: #2ecc40;
  --lime: #adff58;
  --deep: #03110c;
  --panel: #071a13;
  --ink: #f4f8f3;
  --muted: #96a69d;
  --stroke: rgba(255, 255, 255, 0.12);
  font-family: "IBM Plex Sans Thai", sans-serif;
  color: var(--ink);
  background: var(--deep);
}

* { box-sizing: border-box; }
body { min-height: 100vh; margin: 0; background: var(--deep); }
button, input { font: inherit; }
.login-shell { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(420px, 0.85fr); min-height: 100vh; }
.login-visual { position: relative; min-height: 100vh; overflow: hidden; }
.login-visual__image { position: absolute; inset: 0; background: url("assets/hero/hero-night.jpg") center/cover no-repeat; transform: scale(1.02); }
.login-visual__veil { position: absolute; inset: 0; background: linear-gradient(180deg, rgba(2, 12, 8, 0.18), rgba(2, 13, 9, 0.9)), linear-gradient(90deg, rgba(2, 13, 9, 0.08), rgba(2, 13, 9, 0.52)); }
.login-visual__content { position: relative; z-index: 1; display: flex; flex-direction: column; justify-content: space-between; min-height: 100vh; padding: clamp(36px, 6vw, 78px); }
.login-visual__content > img { width: 150px; height: auto; padding: 10px 12px; border-radius: 16px; background: rgba(255, 255, 255, 0.92); }
.login-visual__content p { margin: 0 0 14px; color: var(--brand); font-weight: 600; letter-spacing: 0.08em; text-transform: uppercase; }
.login-visual__content h1 { max-width: 650px; margin: 0 0 22px; font-family: Kanit, sans-serif; font-size: clamp(3.3rem, 7vw, 7.2rem); font-weight: 600; letter-spacing: -0.055em; line-height: 0.9; }
.login-visual__content span { color: rgba(244, 248, 243, 0.7); font-size: 0.94rem; }
.login-panel { display: grid; place-items: center; min-height: 100vh; padding: clamp(28px, 5vw, 72px); border-left: 1px solid var(--stroke); background: radial-gradient(circle at 90% 10%, rgba(46, 204, 64, 0.1), transparent 32%), var(--panel); }
.login-panel__inner { width: min(430px, 100%); }
.login-panel__brand { display: none; }
.login-panel header p { margin: 0 0 8px; color: var(--brand); font-weight: 600; }
.login-panel h2 { margin: 0; font-family: Kanit, sans-serif; font-size: clamp(2.7rem, 5vw, 4.8rem); font-weight: 600; letter-spacing: -0.045em; line-height: 1; }
.login-panel header > span { display: block; margin-top: 14px; color: var(--muted); }
.login-panel form { display: grid; gap: 18px; margin-top: 46px; }
.login-panel label { display: grid; gap: 8px; }
.login-panel label span { color: #c3cec7; font-size: 0.8rem; }
.login-panel input { width: 100%; height: 56px; padding: 0 17px; color: var(--ink); border: 1px solid var(--stroke); border-radius: 15px; outline: none; background: rgba(255, 255, 255, 0.045); transition: border-color 0.2s ease, box-shadow 0.2s ease; }
.login-panel input:focus { border-color: rgba(46, 204, 64, 0.8); box-shadow: 0 0 0 4px rgba(46, 204, 64, 0.1); }
.login-error { margin: -4px 0 0; color: #ff8585; font-size: 0.8rem; }
.login-panel button { display: flex; align-items: center; justify-content: space-between; height: 58px; margin-top: 8px; padding: 0 20px; color: #03110c; border: 0; border-radius: 16px; background: linear-gradient(110deg, var(--brand), var(--lime)); cursor: pointer; font-weight: 600; box-shadow: 0 18px 44px rgba(46, 204, 64, 0.18); }
.login-panel button span { font-size: 1.4rem; }
.login-panel footer { display: flex; justify-content: space-between; gap: 18px; margin-top: 54px; padding-top: 20px; color: var(--muted); border-top: 1px solid var(--stroke); font-size: 0.7rem; }

@media (max-width: 820px) {
  .login-shell { grid-template-columns: 1fr; }
  .login-visual { display: none; }
  .login-panel { min-height: 100vh; border-left: 0; }
  .login-panel__brand { display: flex; align-items: center; justify-content: space-between; gap: 20px; margin-bottom: 64px; color: var(--muted); font-size: 0.75rem; }
  .login-panel__brand img { width: 122px; padding: 8px 10px; border-radius: 13px; background: rgba(255, 255, 255, 0.94); }
}

@media (max-width: 480px) {
  .login-panel { align-items: start; padding: 24px 20px; }
  .login-panel__inner { padding-top: 12px; }
  .login-panel__brand { margin-bottom: 48px; }
  .login-panel footer { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0.01ms !important; }
}