:root {
  color-scheme: light dark;
  --bg: #eef3fb;
  --surface: rgba(255, 255, 255, 0.78);
  --surface-solid: #ffffff;
  --text: #111827;
  --secondary: #697386;
  --tertiary: #8e98a9;
  --line: rgba(28, 39, 60, 0.12);
  --blue: #2878ff;
  --blue-dark: #1764e8;
  --red: #c93f4a;
  --focus: #126df0;
  font: 100%/1.5 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  font-optical-sizing: auto;
}

* { box-sizing: border-box; }

html {
  min-width: 20rem;
  min-height: 100%;
  background: var(--bg);
}

body {
  min-width: 20rem;
  min-height: 100vh;
  min-height: 100dvh;
  margin: 0;
  overflow-x: hidden;
  color: var(--text);
  background:
    radial-gradient(circle at 15% 10%, rgba(78, 141, 255, 0.18), transparent 24rem),
    radial-gradient(circle at 90% 90%, rgba(125, 92, 241, 0.14), transparent 28rem),
    linear-gradient(145deg, #f7f9fd 0%, var(--bg) 52%, #e9eff9 100%);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

button,
input { font: inherit; }

button,
input { -webkit-tap-highlight-color: rgba(40, 120, 255, 0.14); }

button:focus-visible,
input:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.ambient {
  position: fixed;
  z-index: 0;
  border-radius: 999px;
  pointer-events: none;
  opacity: 0.72;
}

.ambient--one {
  width: 23rem;
  height: 23rem;
  inset-block-start: -12rem;
  inset-inline-start: -9rem;
  background: rgba(57, 126, 255, 0.16);
  filter: blur(4rem);
}

.ambient--two {
  width: 27rem;
  height: 27rem;
  inset-block-end: -16rem;
  inset-inline-end: -11rem;
  background: rgba(123, 92, 241, 0.14);
  filter: blur(5rem);
}

.login-shell {
  position: relative;
  z-index: 1;
  display: grid;
  align-content: center;
  width: min(100%, 30rem);
  min-height: 100vh;
  min-height: 100dvh;
  margin-inline: auto;
  padding: max(2rem, env(safe-area-inset-top)) max(1rem, env(safe-area-inset-right)) max(2rem, env(safe-area-inset-bottom)) max(1rem, env(safe-area-inset-left));
}

.brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.62rem;
  margin-block-end: 1.5rem;
  font-size: 1.05rem;
  font-weight: 730;
  letter-spacing: -0.015em;
}

.brand-mark {
  display: grid;
  width: 2.15rem;
  height: 2.15rem;
  place-items: center;
  color: #fff;
  background: linear-gradient(145deg, #3c8aff, #1f63ed);
  border: 1px solid rgba(255, 255, 255, 0.52);
  border-radius: 0.72rem;
  box-shadow: 0 9px 20px rgba(40, 120, 255, 0.23);
}

.brand-mark svg { width: 1.32rem; fill: currentColor; }

.brand-beta {
  align-self: flex-start;
  margin-inline-start: -0.35rem;
  color: var(--tertiary);
  font-size: 0.7rem;
}

.login-card {
  padding: clamp(1.5rem, 6vw, 2.15rem);
  background: var(--surface);
  border: 1px solid rgba(255, 255, 255, 0.74);
  border-radius: 1.75rem;
  box-shadow: 0 30px 80px rgba(32, 48, 78, 0.14), 0 3px 12px rgba(32, 48, 78, 0.06);
  backdrop-filter: blur(1.7rem) saturate(150%);
  -webkit-backdrop-filter: blur(1.7rem) saturate(150%);
}

.login-heading { margin-block-end: 1.8rem; }

.security-mark {
  display: grid;
  width: 3.1rem;
  height: 3.1rem;
  margin-block-end: 1.15rem;
  place-items: center;
  color: var(--blue);
  background: rgba(40, 120, 255, 0.1);
  border: 1px solid rgba(40, 120, 255, 0.11);
  border-radius: 1rem;
}

.security-mark svg {
  width: 1.45rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.eyebrow {
  margin: 0 0 0.32rem;
  color: var(--blue);
  font-size: 0.72rem;
  font-weight: 760;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(1.8rem, 7vw, 2.2rem);
  line-height: 1.08;
  font-weight: 760;
  letter-spacing: -0.035em;
}

.subtitle {
  max-width: 31rem;
  margin: 0.72rem 0 0;
  color: var(--secondary);
  font-size: 0.94rem;
  line-height: 1.55;
}

form { display: grid; gap: 1.05rem; }

.field { display: grid; gap: 0.48rem; }

label {
  font-size: 0.83rem;
  font-weight: 680;
  letter-spacing: -0.005em;
}

input {
  width: 100%;
  min-height: 3.25rem;
  padding: 0.75rem 0.92rem;
  color: var(--text);
  background: rgba(248, 250, 253, 0.88);
  border: 1px solid var(--line);
  border-radius: 0.9rem;
  box-shadow: inset 0 1px 1px rgba(23, 34, 55, 0.02);
  appearance: none;
}

input:hover { border-color: rgba(28, 39, 60, 0.22); }

input:focus {
  border-color: rgba(40, 120, 255, 0.7);
  box-shadow: 0 0 0 4px rgba(40, 120, 255, 0.1);
}

input[aria-invalid="true"] {
  border-color: var(--red);
  box-shadow: 0 0 0 4px rgba(201, 63, 74, 0.08);
}

.password-control { position: relative; }

.password-control input { padding-inline-end: 6.2rem; }

.reveal-button {
  position: absolute;
  inset-block: 0.38rem;
  inset-inline-end: 0.42rem;
  min-width: 5.15rem;
  padding-inline: 0.68rem;
  color: var(--blue-dark);
  background: transparent;
  border: 0;
  border-radius: 0.68rem;
  font-size: 0.78rem;
  font-weight: 700;
  cursor: pointer;
}

.reveal-button:hover { background: rgba(40, 120, 255, 0.08); }

.form-error {
  min-height: 1.3rem;
  margin: -0.15rem 0 0;
  color: var(--red);
  font-size: 0.82rem;
  line-height: 1.4;
}

.primary-button {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.62rem;
  min-height: 3.25rem;
  margin-block-start: 0.18rem;
  padding-inline: 1.1rem;
  color: #fff;
  background: linear-gradient(180deg, #3483ff, var(--blue-dark));
  border: 0;
  border-radius: 0.95rem;
  box-shadow: 0 10px 24px rgba(40, 120, 255, 0.25), inset 0 1px rgba(255, 255, 255, 0.22);
  font-weight: 720;
  cursor: pointer;
}

.primary-button:hover { filter: brightness(1.025); }
.primary-button:active { transform: scale(0.985); }
.primary-button:disabled { cursor: wait; opacity: 0.76; }

.button-spinner {
  display: none;
  width: 1rem;
  height: 1rem;
  border: 2px solid rgba(255, 255, 255, 0.42);
  border-top-color: #fff;
  border-radius: 50%;
}

.primary-button[aria-busy="true"] .button-spinner { display: block; }

.security-note {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
  margin: 1.5rem 0 0;
  color: var(--tertiary);
  font-size: 0.76rem;
  line-height: 1.45;
}

.security-note svg {
  flex: 0 0 auto;
  width: 1rem;
  margin-block-start: 0.05rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0c111a;
    --surface: rgba(27, 34, 47, 0.78);
    --surface-solid: #1a2130;
    --text: #f4f7fb;
    --secondary: #abb5c5;
    --tertiary: #7f8a9d;
    --line: rgba(224, 232, 247, 0.14);
    --blue: #5797ff;
    --blue-dark: #347ff3;
    --red: #ff828a;
    --focus: #8bb8ff;
  }

  body {
    background:
      radial-gradient(circle at 15% 10%, rgba(68, 130, 246, 0.2), transparent 24rem),
      radial-gradient(circle at 90% 90%, rgba(125, 92, 241, 0.18), transparent 28rem),
      linear-gradient(145deg, #151c28 0%, var(--bg) 55%, #101522 100%);
  }

  .login-card { border-color: rgba(230, 237, 250, 0.1); box-shadow: 0 32px 90px rgba(0, 0, 0, 0.42); }
  input { background: rgba(13, 18, 27, 0.66); }
  input:hover { border-color: rgba(224, 232, 247, 0.25); }
}

@media (prefers-reduced-motion: no-preference) {
  .login-card { animation: materialize 420ms cubic-bezier(0.2, 0.82, 0.24, 1) both; }
  .button-spinner { animation: spin 700ms linear infinite; }
  .primary-button,
  .reveal-button,
  input { transition: border-color 140ms ease, box-shadow 140ms ease, background-color 140ms ease, transform 100ms ease, filter 140ms ease; }
}

@media (prefers-reduced-transparency: reduce) {
  .login-card { background: var(--surface-solid); backdrop-filter: none; -webkit-backdrop-filter: none; }
}

@media (prefers-contrast: more) {
  .login-card { background: var(--surface-solid); border: 2px solid currentColor; }
  input { border: 2px solid currentColor; }
}

@media (max-width: 24rem) {
  .login-shell { align-content: start; padding-block-start: max(1.25rem, env(safe-area-inset-top)); }
  .brand { justify-content: flex-start; margin-inline-start: 0.4rem; }
  .login-card { border-radius: 1.4rem; }
}

@media (forced-colors: active) {
  .brand-mark,
  .primary-button { border: 2px solid ButtonText; }
  .login-card { border: 2px solid CanvasText; }
}

@keyframes materialize {
  from { opacity: 0; transform: translateY(0.6rem) scale(0.985); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes spin { to { transform: rotate(360deg); } }