:root {
  --ink: #0f1b2d;
  --muted: #5b6b80;
  --line: rgba(15, 27, 45, 0.12);
  --panel: rgba(255, 255, 255, 0.88);
  --blue: #2563eb;
  --blue-deep: #1d4ed8;
  --sky: #38bdf8;
  --danger: #b42318;
  --font-display: "Outfit", sans-serif;
  --font-body: "Manrope", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-body);
  color: var(--ink);
  background: #e8eef8;
}

.bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(900px 480px at 12% -5%, rgba(56, 189, 248, 0.28), transparent 60%),
    radial-gradient(700px 420px at 95% 10%, rgba(37, 99, 235, 0.18), transparent 55%),
    linear-gradient(165deg, #eef4ff 0%, #e6edf8 45%, #dde7f4 100%);
}

.bg::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.3;
  background-image:
    linear-gradient(rgba(15, 27, 45, 0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(15, 27, 45, 0.04) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(circle at 50% 30%, #000 20%, transparent 75%);
}

.shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 1.5rem;
}

.panel {
  width: min(100%, 420px);
  padding: 2rem 1.6rem 1.3rem;
  border-radius: 22px;
  background: var(--panel);
  border: 1px solid rgba(15, 27, 45, 0.08);
  box-shadow: 0 24px 50px rgba(15, 27, 45, 0.1);
  animation: rise 0.55s ease both;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(14px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  margin-bottom: 1.6rem;
}

.brand-mark {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  background: linear-gradient(145deg, var(--blue), #0ea5e9);
  position: relative;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.2);
}

.brand-mark::before,
.brand-mark::after {
  content: "";
  position: absolute;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #fff;
}

.brand-mark::before {
  left: 11px;
  top: 17px;
}

.brand-mark::after {
  right: 11px;
  top: 17px;
  opacity: 0.85;
}

.brand-name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.55rem;
  letter-spacing: -0.03em;
  line-height: 1;
  font-weight: 700;
}

.brand-sub {
  margin: 0.3rem 0 0;
  color: var(--muted);
  font-size: 0.92rem;
}

h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 1.55rem;
  letter-spacing: -0.03em;
  font-weight: 650;
}

.lead {
  margin: 0.45rem 0 1.25rem;
  color: var(--muted);
}

form {
  display: grid;
  gap: 0.9rem;
}

label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.92rem;
  font-weight: 600;
  color: var(--ink);
}

input {
  width: 100%;
  min-height: 48px;
  padding: 0.7rem 0.95rem;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: #fff;
  color: var(--ink);
  font: inherit;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.16);
}

.btn {
  appearance: none;
  border: 0;
  cursor: pointer;
  min-height: 48px;
  border-radius: 999px;
  padding: 0.75rem 1.2rem;
  font-family: var(--font-display);
  font-size: 1rem;
  letter-spacing: -0.01em;
  font-weight: 650;
  color: #f8fbff;
  background: linear-gradient(135deg, var(--blue), var(--blue-deep));
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.22);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 16px 28px rgba(37, 99, 235, 0.28);
}

.btn:disabled {
  opacity: 0.7;
  cursor: wait;
  transform: none;
}

.linkish {
  margin-top: 1rem;
  border: 0;
  background: transparent;
  color: var(--blue-deep);
  font: inherit;
  font-weight: 650;
  cursor: pointer;
  padding: 0;
}

.msg {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.4;
}

.msg-error {
  color: var(--danger);
}

.foot {
  margin-top: 1.6rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 0.75rem;
}

.foot p {
  margin: 0;
  color: var(--muted);
  font-size: 0.86rem;
}

.notice {
  padding: 0.85rem 0.95rem;
  border-radius: 12px;
  background: rgba(37, 99, 235, 0.08);
  border: 1px solid rgba(37, 99, 235, 0.14);
  color: var(--ink);
  font-size: 0.88rem;
  line-height: 1.45;
}

.notice strong {
  color: var(--blue-deep);
}

.notice a {
  color: var(--blue-deep);
  font-weight: 650;
  text-decoration: none;
}

.notice a:hover {
  text-decoration: underline;
}

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