:root {
  color-scheme: light;
  --background: oklch(0.968 0.019 244);
  --foreground: oklch(0.29 0.042 252);
  --card: oklch(0.993 0.007 245);
  --card-foreground: oklch(0.34 0.032 250);
  --popover: oklch(0.998 0.004 245);
  --popover-foreground: oklch(0.29 0.042 252);
  --primary: oklch(0.57 0.19 258);
  --primary-foreground: oklch(0.99 0.004 245);
  --secondary: oklch(0.94 0.03 244);
  --secondary-foreground: oklch(0.38 0.045 250);
  --muted: oklch(0.955 0.017 245);
  --muted-foreground: oklch(0.53 0.035 248);
  --accent: oklch(0.918 0.045 249);
  --accent-foreground: oklch(0.38 0.1 258);
  --destructive: oklch(0.61 0.19 24);
  --border: oklch(0.85 0.04 245);
  --input: oklch(0.82 0.045 246);
  --ring: oklch(0.65 0.14 256);
  --radius: 0.875rem;
  color: var(--foreground);
  background: var(--background);
  font-family: Inter, "Noto Sans SC", "Microsoft YaHei", system-ui, sans-serif;
  letter-spacing: 0;
}

.dark {
  color-scheme: dark;
  --background: oklch(0.2 0.035 252);
  --foreground: oklch(0.94 0.02 245);
  --card: oklch(0.25 0.035 251);
  --card-foreground: oklch(0.91 0.022 245);
  --popover: oklch(0.235 0.038 252);
  --popover-foreground: oklch(0.94 0.02 245);
  --primary: oklch(0.7 0.15 252);
  --primary-foreground: oklch(0.19 0.04 253);
  --secondary: oklch(0.285 0.045 250);
  --secondary-foreground: oklch(0.92 0.02 245);
  --muted: oklch(0.275 0.032 250);
  --muted-foreground: oklch(0.72 0.04 245);
  --accent: oklch(0.32 0.065 250);
  --accent-foreground: oklch(0.91 0.03 244);
  --destructive: oklch(0.7 0.18 24);
  --border: oklch(1 0 0 / 10%);
  --input: oklch(1 0 0 / 15%);
  --ring: oklch(0.68 0.13 252);
}

* {
  box-sizing: border-box;
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  background:
    linear-gradient(color-mix(in oklch, var(--border) 70%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in oklch, var(--border) 70%, transparent) 1px, transparent 1px),
    linear-gradient(145deg, var(--background), var(--secondary));
  background-size: 34px 34px;
}

.login-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 24px;
}

.login-panel {
  width: min(420px, 100%);
  padding: 28px;
  color: var(--card-foreground);
  background: var(--card);
  border: 1px solid var(--border);
  border-top: 4px solid var(--primary);
  border-radius: var(--radius);
  box-shadow: 0 18px 50px oklch(0.29 0.042 252 / 12%);
}

.login-brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--border);
}

.login-brand > span {
  width: 42px;
  height: 42px;
  display: grid;
  place-items: center;
  color: var(--primary-foreground);
  background: var(--primary);
  border-radius: 5px;
  font-size: 13px;
  font-weight: 800;
}

.login-brand strong,
.login-brand small {
  display: block;
}

.login-brand strong {
  font-size: 18px;
}

.login-brand small {
  margin-top: 4px;
  color: var(--muted-foreground);
  font: 8px "SFMono-Regular", Consolas, monospace;
}

.login-heading {
  margin: 30px 0 24px;
}

.login-heading p {
  margin: 0 0 7px;
  color: var(--primary);
  font: 750 9px "SFMono-Regular", Consolas, monospace;
}

.login-heading h1 {
  margin: 0;
  font-size: 24px;
}

form {
  display: grid;
}

label {
  margin: 0 0 7px;
  color: var(--muted-foreground);
  font-size: 11px;
  font-weight: 700;
}

input {
  width: 100%;
  height: 44px;
  margin-bottom: 18px;
  padding: 0 12px;
  color: var(--foreground);
  background: var(--background);
  border: 1px solid var(--input);
  border-radius: calc(var(--radius) - 2px);
  font: inherit;
  letter-spacing: 0;
}

input:focus {
  outline: 3px solid color-mix(in oklch, var(--ring) 24%, transparent);
  border-color: var(--ring);
}

.login-message {
  min-height: 17px;
  margin: -4px 0 10px;
  color: var(--destructive);
  font-size: 11px;
}

button {
  height: 44px;
  color: var(--primary-foreground);
  background: var(--primary);
  border: 0;
  border-radius: calc(var(--radius) - 2px);
  font: inherit;
  font-weight: 750;
  letter-spacing: 0;
  cursor: pointer;
}

button:hover {
  background: color-mix(in oklch, var(--primary) 86%, var(--foreground));
}

button:disabled {
  opacity: 0.65;
  cursor: wait;
}

footer {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: 26px;
  color: var(--muted-foreground);
  font: 8px "SFMono-Regular", Consolas, monospace;
}

footer i {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--primary);
  box-shadow: 0 0 0 4px color-mix(in oklch, var(--primary) 12%, transparent);
}

@media (max-width: 460px) {
  .login-shell {
    padding: 14px;
  }

  .login-panel {
    padding: 22px;
  }
}