:root {
  --page: #f6f8fb;
  --page-2: #edf2f7;
  --glass: rgba(255, 255, 255, 0.68);
  --glass-strong: rgba(255, 255, 255, 0.88);
  --field: rgba(255, 255, 255, 0.74);
  --field-strong: rgba(255, 255, 255, 0.94);
  --text: #121826;
  --muted: #697386;
  --soft: #9aa4b2;
  --line: rgba(18, 24, 38, 0.09);
  --line-strong: rgba(18, 24, 38, 0.16);
  --accent: #1473e6;
  --accent-2: #12a978;
  --accent-soft: rgba(20, 115, 230, 0.1);
  --shadow-color: #1b2433;
  --shadow: 0 24px 70px rgba(27, 36, 51, 0.1);
  --shadow-soft: 0 12px 34px rgba(27, 36, 51, 0.08);
  --blur: blur(24px) saturate(1.35);
  --font: "SF Pro Display", "SF Pro Text", -apple-system, BlinkMacSystemFont,
    "Segoe UI Variable", "Segoe UI", Arial, sans-serif;
}

:root[data-theme="dark"] {
  --page: #070a0f;
  --page-2: #0d121a;
  --glass: rgba(18, 23, 32, 0.62);
  --glass-strong: rgba(30, 36, 48, 0.78);
  --field: rgba(255, 255, 255, 0.07);
  --field-strong: rgba(255, 255, 255, 0.105);
  --text: #f4f7fb;
  --muted: #a7b0bf;
  --soft: #747f90;
  --line: rgba(255, 255, 255, 0.1);
  --line-strong: rgba(255, 255, 255, 0.18);
  --accent: #71adff;
  --accent-2: #63ddb2;
  --accent-soft: rgba(113, 173, 255, 0.14);
  --shadow-color: #000;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.3);
  --shadow-soft: 0 12px 34px rgba(0, 0, 0, 0.22);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--page);
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  font-family: var(--font);
  letter-spacing: 0;
  background:
    radial-gradient(circle at 16% -8%, color-mix(in srgb, var(--accent) 14%, transparent), transparent 28rem),
    radial-gradient(circle at 90% 8%, color-mix(in srgb, var(--accent-2) 12%, transparent), transparent 24rem),
    linear-gradient(180deg, #ffffff 0%, var(--page) 42%, var(--page-2) 100%);
  -webkit-font-smoothing: antialiased;
  text-rendering: geometricPrecision;
}

:root[data-theme="dark"] body {
  background:
    radial-gradient(circle at 16% -8%, color-mix(in srgb, var(--accent) 18%, transparent), transparent 28rem),
    radial-gradient(circle at 90% 8%, color-mix(in srgb, var(--accent-2) 10%, transparent), transparent 24rem),
    linear-gradient(180deg, #111722 0%, var(--page) 44%, #05070a 100%);
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font: inherit;
}

button,
a,
input,
.auth-card {
  transition:
    background 180ms ease,
    border-color 180ms ease,
    box-shadow 180ms ease,
    color 180ms ease,
    opacity 180ms ease,
    transform 180ms ease;
}

.hidden {
  display: none !important;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem max(1rem, calc((100vw - 1120px) / 2));
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--glass-strong) 82%, transparent);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
}

.brand,
.nav {
  display: flex;
  align-items: center;
}

.brand {
  gap: 0.62rem;
  font-size: 0.95rem;
  font-weight: 700;
}

.brand-mark {
  display: grid;
  width: 2rem;
  height: 2rem;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: #fff;
  background: #111827;
  box-shadow: 0 12px 28px rgba(17, 24, 39, 0.14);
}

:root[data-theme="dark"] .brand-mark {
  color: #10151d;
  background: #f4f7fb;
}

.nav {
  gap: 0.55rem;
}

.nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.45rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 0.9rem;
  color: var(--muted);
  background: color-mix(in srgb, var(--glass) 78%, transparent);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
  font-weight: 650;
}

.nav a:hover {
  border-color: var(--line-strong);
  color: var(--text);
  background: var(--glass-strong);
  transform: translateY(-1px);
}

.shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 420px;
  gap: 2rem;
  align-items: center;
  width: min(1120px, calc(100% - 2rem));
  min-height: calc(100vh - 4.25rem);
  margin: 0 auto;
  padding: 3.1rem 0 5rem;
}

.copy {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 0.7rem;
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 750;
  letter-spacing: 0;
  text-transform: uppercase;
}

h1,
p {
  margin-top: 0;
}

h1 {
  max-width: 730px;
  margin-bottom: 1rem;
  font-size: 3.35rem;
  line-height: 1.04;
  letter-spacing: 0;
  font-weight: 650;
}

.copy p:not(.eyebrow) {
  max-width: 620px;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.04rem;
  line-height: 1.7;
}

.auth-card {
  border: 1px solid color-mix(in srgb, var(--line) 78%, transparent);
  border-radius: 8px;
  padding: 1.08rem;
  background:
    linear-gradient(180deg, color-mix(in srgb, var(--glass-strong) 86%, transparent), var(--glass)),
    var(--glass);
  box-shadow: var(--shadow);
  backdrop-filter: var(--blur);
  -webkit-backdrop-filter: var(--blur);
}

.tabs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.28rem;
  margin-bottom: 1.05rem;
  padding: 0.24rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: color-mix(in srgb, var(--field) 74%, transparent);
}

.tab,
.primary {
  min-height: 2.85rem;
  border-radius: 8px;
  cursor: pointer;
  font-weight: 700;
}

.tab {
  border: 0;
  color: var(--muted);
  background: transparent;
}

.tab.active {
  color: var(--text);
  background: var(--glass-strong);
  box-shadow: var(--shadow-soft);
}

.form {
  display: grid;
  gap: 1rem;
}

label {
  display: grid;
  gap: 0.5rem;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 650;
}

input {
  width: 100%;
  min-height: 3.1rem;
  border: 1px solid transparent;
  border-radius: 8px;
  outline: none;
  padding: 0 0.92rem;
  color: var(--text);
  background: var(--field);
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, #fff 55%, transparent),
    0 1px 0 color-mix(in srgb, var(--line) 58%, transparent);
}

input:focus {
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
  background: var(--field-strong);
  box-shadow:
    0 0 0 4px color-mix(in srgb, var(--accent) 13%, transparent),
    inset 0 1px 0 color-mix(in srgb, #fff 70%, transparent);
}

.password-field {
  position: relative;
  display: flex;
  align-items: center;
}

.password-field input {
  padding-right: 3.2rem;
}

.password-toggle {
  position: absolute;
  right: 0.42rem;
  display: grid;
  width: 2.24rem;
  height: 2.24rem;
  place-items: center;
  border: 0;
  border-radius: 8px;
  color: var(--soft);
  background: transparent;
  cursor: pointer;
}

.password-toggle:hover {
  color: var(--text);
  background: color-mix(in srgb, var(--text) 7%, transparent);
}

.password-icon {
  display: block;
  width: 1.05rem;
  height: 1.05rem;
}

.password-icon--off,
.password-toggle.is-visible .password-icon--on {
  display: none;
}

.password-toggle.is-visible .password-icon--off {
  display: block;
}

.primary {
  border: 0;
  color: #fff;
  background: #111827;
  box-shadow: 0 14px 34px rgba(17, 24, 39, 0.18);
}

.primary:hover {
  transform: translateY(-1px);
  background: #0b1220;
}

:root[data-theme="dark"] .primary {
  color: #10151d;
  background: #f4f7fb;
}

:root[data-theme="dark"] .primary:hover {
  background: #fff;
}

.message {
  min-height: 1.3rem;
  margin: 1rem 0 0;
  color: var(--soft);
  font-size: 0.9rem;
}

.message.ok {
  color: var(--accent-2);
}

.message.error {
  color: #df3f48;
}

:root[data-theme="dark"] .message.error {
  color: #ff6870;
}

@media (max-width: 860px) {
  .shell {
    grid-template-columns: 1fr;
    align-items: start;
  }

  h1 {
    font-size: 2.95rem;
  }
}

@media (max-width: 520px) {
  .topbar {
    position: static;
    align-items: flex-start;
    flex-direction: column;
  }

  .nav {
    width: 100%;
  }

  .nav a,
  .nav button {
    justify-content: center;
    flex: 1;
  }

  .shell {
    width: min(100% - 1rem, 1120px);
    padding-top: 2rem;
  }

  h1 {
    font-size: 2.25rem;
  }
}