:root {
  color-scheme: light;
  --ink: #111820;
  --muted: #6e7885;
  --line: #e5e8eb;
  --gold: #c9a45d;
  --gold-light: #e3c98f;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--ink);
  background: #f5f6f7;
  font-family: Inter, "Segoe UI", "Microsoft YaHei", Arial, sans-serif;
}

button, input { font: inherit; }

.login-shell {
  display: grid;
  grid-template-columns: minmax(460px, 1.05fr) minmax(520px, .95fr);
  min-height: 100vh;
}

.brand-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  padding: 54px 7vw 48px;
  color: #fff;
  background:
    radial-gradient(circle at 75% 15%, rgba(201, 164, 93, .17), transparent 30%),
    linear-gradient(145deg, #111820 0%, #17222d 62%, #0d141b 100%);
}

.brand-panel::before {
  position: absolute;
  right: -15%;
  bottom: 5%;
  width: 60%;
  aspect-ratio: 1;
  border: 1px solid rgba(255,255,255,.06);
  border-radius: 50%;
  box-shadow: 0 0 0 70px rgba(255,255,255,.018), 0 0 0 140px rgba(255,255,255,.012);
  content: "";
}

.brand-lockup {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 15px;
}

.brand-logo {
  width: 48px;
  height: 48px;
  padding: 9px;
  color: #111820;
  fill: currentColor;
  border-radius: 14px;
  background: linear-gradient(145deg, #e0c17d, #a8792f);
  box-shadow: 0 12px 30px rgba(0,0,0,.25);
}

.logo-accent { fill: #fff; opacity: .92; }

.brand-lockup strong, .brand-lockup span { display: block; }
.brand-lockup strong { font-size: 17px; letter-spacing: .2px; }
.brand-lockup span { margin-top: 4px; color: #9fa9b5; font-size: 12px; }

.brand-message {
  position: relative;
  z-index: 1;
  max-width: 650px;
  margin: auto 0;
  padding: 80px 0;
}

.eyebrow {
  margin: 0 0 18px;
  color: #b88c42;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 1.8px;
  text-transform: uppercase;
}

.brand-message .eyebrow { color: var(--gold-light); }

.brand-message h1 {
  margin: 0;
  font-size: clamp(40px, 4.2vw, 68px);
  line-height: 1.14;
  letter-spacing: -2.5px;
}

.description {
  max-width: 570px;
  margin: 28px 0 0;
  color: #aab3bc;
  font-size: 16px;
  line-height: 1.85;
}

.brand-proof {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 26px;
  color: #8f9aa5;
  font-size: 12px;
}

.brand-proof span { display: flex; align-items: center; gap: 8px; }
.brand-proof i {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--gold);
  box-shadow: 0 0 0 4px rgba(201,164,93,.12);
}

.form-panel {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: 56px;
  background:
    linear-gradient(rgba(255,255,255,.8), rgba(255,255,255,.8)),
    radial-gradient(circle at 20% 20%, #eadfc8, transparent 28%);
}

.login-card { width: min(100%, 430px); }
.mobile-brand { display: none; }
.login-card h2 {
  margin: 0;
  font-size: 34px;
  letter-spacing: -1px;
}

.intro {
  margin: 13px 0 34px;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.7;
}

form { display: grid; gap: 20px; }
label > span {
  display: block;
  margin-bottom: 9px;
  font-size: 13px;
  font-weight: 700;
}

.field {
  display: flex;
  align-items: center;
  height: 54px;
  padding: 0 15px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 4px 18px rgba(20,29,38,.03);
  transition: 160ms ease;
}

.field:focus-within {
  border-color: #c6a15a;
  box-shadow: 0 0 0 4px rgba(201,164,93,.12);
}

.field > svg {
  flex: 0 0 20px;
  width: 20px;
  margin-right: 11px;
  fill: none;
  stroke: #89939e;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.7;
}

.field input {
  width: 100%;
  min-width: 0;
  height: 100%;
  padding: 0;
  color: var(--ink);
  border: 0;
  outline: 0;
  background: transparent;
  font-size: 14px;
}

.field input::placeholder { color: #adb4bc; }

.password-toggle {
  padding: 7px 3px 7px 10px;
  color: #7b6947;
  border: 0;
  background: transparent;
  cursor: pointer;
  font-size: 12px;
  font-weight: 700;
}

.error-message {
  min-height: 18px;
  margin: -5px 0 -5px;
  color: #b42318;
  font-size: 12px;
}

.login-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  height: 54px;
  color: #fff;
  border: 0;
  border-radius: 12px;
  background: #111820;
  box-shadow: 0 14px 28px rgba(17,24,32,.18);
  cursor: pointer;
  font-size: 14px;
  font-weight: 700;
  transition: 160ms ease;
}

.login-button:hover { transform: translateY(-1px); background: #1c2834; }
.login-button:disabled { cursor: wait; opacity: .72; transform: none; }
.login-button svg {
  width: 18px;
  fill: none;
  stroke: var(--gold-light);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2;
}

.login-button.loading svg { animation: pulse 900ms infinite alternate; }
@keyframes pulse { to { transform: translateX(4px); opacity: .5; } }

.security-note {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  margin: 24px 0 0;
  color: #9199a2;
  font-size: 11px;
}

.security-note svg {
  width: 15px;
  fill: none;
  stroke: #99906f;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 1.6;
}

.copyright {
  position: absolute;
  bottom: 26px;
  margin: 0;
  color: #a2a8ae;
  font-size: 10px;
  letter-spacing: .2px;
}

@media (max-width: 960px) {
  .login-shell { grid-template-columns: 1fr; }
  .brand-panel { display: none; }
  .form-panel { min-height: 100vh; padding: 42px 24px 70px; }
  .mobile-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 54px;
  }
  .mobile-brand svg {
    width: 38px;
    padding: 7px;
    fill: #111820;
    border-radius: 10px;
    background: linear-gradient(145deg, #e0c17d, #a8792f);
  }
}

@media (max-width: 480px) {
  .form-panel { align-items: flex-start; }
  .login-card h2 { font-size: 30px; }
  .mobile-brand { margin-bottom: 44px; }
}