@font-face {
  font-family: "Kalam Local";
  src: url("/fonts/kalam/5.3.0/kalam-latin-400-normal.95441060.woff2") format("woff2");
  font-display: swap;
  font-weight: 400;
}

:root {
  --paper: #f6f0e4;
  --card: #fffdf7;
  --ink: #252522;
  --muted: #595750;
  --red: #c7363e;
  --blue: #2358a5;
  --yellow: #fff1a8;
}

* { box-sizing: border-box; }

html, body { min-height: 100%; }

body {
  margin: 0;
  color: var(--ink);
  font-family: "LXGW WenKai Screen", "Microsoft YaHei", system-ui, sans-serif;
  background-color: var(--paper);
  background-image: radial-gradient(circle, rgba(37, 37, 34, 0.14) 1px, transparent 1px);
  background-size: 20px 20px;
}

.login-shell {
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 32px 18px;
}

.login-card {
  position: relative;
  width: min(420px, 100%);
  padding: 46px 38px 32px;
  background: var(--card);
  border: 3px solid var(--ink);
  border-radius: 12px 8px 14px 7px / 8px 13px 7px 12px;
  box-shadow: 6px 6px 0 var(--ink);
  transform: rotate(-0.4deg);
}

.tape {
  position: absolute;
  top: -10px;
  left: 50%;
  width: 58px;
  height: 18px;
  transform: translateX(-50%) rotate(1deg);
  background: rgba(225, 221, 210, 0.78);
  border-left: 1px solid rgba(89, 87, 80, 0.18);
  border-right: 1px solid rgba(89, 87, 80, 0.18);
}

.brand-mark {
  width: 50px;
  height: 50px;
  display: grid;
  place-items: center;
  margin-bottom: 12px;
  color: var(--card);
  background: var(--red);
  border: 3px solid var(--ink);
  border-radius: 50% 46% 52% 45%;
  box-shadow: 3px 3px 0 var(--ink);
}

.brand-mark svg { width: 27px; height: 27px; }

.eyebrow {
  margin: 0 0 2px;
  color: var(--blue);
  font-family: "Kalam Local", cursive;
  font-size: 15px;
  letter-spacing: 0.08em;
}

h1 {
  width: max-content;
  max-width: 100%;
  margin: 0;
  font-family: "Kalam Local", "LXGW WenKai Screen", cursive;
  font-size: clamp(28px, 7vw, 38px);
  line-height: 1.2;
  text-decoration: underline wavy var(--red) 2px;
  text-underline-offset: 7px;
}

.intro {
  margin: 20px 0 24px;
  color: var(--muted);
  font-size: 15px;
}

form { display: grid; gap: 9px; }

label { font-weight: 700; }

input {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  border: 2px solid var(--ink);
  border-radius: 8px 12px 7px 10px / 10px 7px 12px 8px;
  background: #fffef9;
  color: var(--ink);
  font: 16px system-ui, sans-serif;
  outline: none;
}

input:focus-visible {
  outline: 3px solid var(--blue);
  outline-offset: 3px;
}

.login-error {
  min-height: 22px;
  margin: 3px 0 0;
  color: #862831;
  font-size: 14px;
  font-weight: 700;
}

button {
  min-height: 46px;
  padding: 10px 16px;
  border: 2px solid var(--ink);
  border-radius: 9px 12px 8px 14px / 12px 8px 14px 9px;
  background: var(--yellow);
  color: var(--ink);
  box-shadow: 3px 3px 0 var(--ink);
  font: 700 16px "LXGW WenKai Screen", system-ui, sans-serif;
  cursor: pointer;
}

button:hover { transform: translate(-1px, -1px); box-shadow: 4px 4px 0 var(--ink); }
button:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--ink); }
button:focus-visible { outline: 3px solid var(--blue); outline-offset: 4px; }
button:disabled { cursor: wait; opacity: 0.65; transform: none; }

.security-note {
  margin: 22px 0 0;
  padding: 10px 12px;
  background: #dceaf8;
  border-left: 4px solid var(--blue);
  color: #204e7c;
  font-size: 13px;
  transform: rotate(0.4deg);
}

@media (max-width: 480px) {
  .login-shell { padding: 18px 12px; }
  .login-card { padding: 40px 24px 26px; transform: none; box-shadow: 4px 4px 0 var(--ink); }
  .tape { width: 52px; height: 14px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition: none !important; }
  button:hover, button:active { transform: none; }
}