:root {
  --bg: #070b14;
  --ink: #eef3ff;
  --muted: #9aa8c3;
  --line: rgba(120, 170, 255, 0.28);
  --glass: rgba(14, 22, 40, 0.78);
  --hub: #6ec8ff;
}

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

html,
body {
  margin: 0;
  min-height: 100%;
  min-height: 100dvh;
}

body.delta-login-page {
  font-family: Outfit, system-ui, sans-serif;
  color: var(--ink);
  background: var(--bg);
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
}

.bg {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(110, 160, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(110, 160, 255, 0.06) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 78%);
}

.bg-glow {
  position: absolute;
  width: 48vmax;
  height: 48vmax;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.45;
}

.bg-glow-a {
  top: -12vmax;
  left: -8vmax;
  background: #163a7a;
}

.bg-glow-b {
  right: -10vmax;
  bottom: -16vmax;
  background: #0f3d48;
}

.delta-login-top {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.25rem;
}

.delta-login-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--ink);
  text-decoration: none;
  font-family: Syne, Outfit, sans-serif;
  font-weight: 800;
  letter-spacing: -0.03em;
  text-transform: none;
  font-size: 1.25rem;
  line-height: 1;
}

.delta-login-brand .top-brand-mark {
  width: 1.45rem;
  height: auto;
  flex: 0 0 auto;
  display: block;
  object-fit: contain;
}

.delta-login-brand .top-brand-text {
  background: linear-gradient(180deg, #ffffff 15%, #8fd4ff);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.bg-brand {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  pointer-events: none;
}

.bg-brand-logo {
  width: min(70vmin, 720px);
  height: auto;
  max-height: 70vh;
  object-fit: contain;
  opacity: 0.1;
  filter: saturate(0.85);
  user-select: none;
}

.delta-login-mark {
  width: 0.85rem;
  height: 0.85rem;
  clip-path: polygon(50% 6%, 96% 88%, 4% 88%);
  background: linear-gradient(180deg, #9fe7ff, #3b8dff);
}

.delta-login-back {
  color: var(--muted);
  text-decoration: none;
  font-size: 0.85rem;
}

.delta-login-back:hover {
  color: var(--ink);
}

.delta-login-main {
  position: relative;
  z-index: 2;
  flex: 1;
  display: grid;
  place-items: center;
  padding: 1rem 1.25rem 2.5rem;
}

.delta-login-card {
  width: min(420px, 100%);
  padding: 1.6rem 1.5rem 1.45rem;
  border-radius: 1.35rem;
  border: 1px solid var(--line);
  background: var(--glass);
  backdrop-filter: blur(18px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
}

.delta-login-kicker {
  margin: 0 0 0.25rem;
  color: var(--hub);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.delta-login-card h1 {
  margin: 0 0 0.55rem;
  font-size: 1.55rem;
  letter-spacing: -0.02em;
}

.delta-login-lead {
  margin: 0 0 1.15rem;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.45;
}

.delta-login-error {
  margin: 0 0 0.9rem;
  padding: 0.55rem 0.7rem;
  border-radius: 0.55rem;
  background: rgba(220, 60, 60, 0.16);
  border: 1px solid rgba(255, 120, 120, 0.35);
  color: #ffc4c4;
  font-size: 0.88rem;
}

.delta-login-field {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  margin-bottom: 0.85rem;
  font-size: 0.82rem;
  color: var(--muted);
}

.delta-login-field input {
  width: 100%;
  padding: 0.7rem 0.8rem;
  border-radius: 0.65rem;
  border: 1px solid rgba(140, 180, 255, 0.28);
  background: rgba(6, 12, 24, 0.75);
  color: var(--ink);
  font: inherit;
  font-size: 1rem;
}

.delta-login-field input:focus {
  outline: none;
  border-color: color-mix(in srgb, var(--hub) 70%, white);
  box-shadow: 0 0 0 3px rgba(110, 200, 255, 0.18);
}

.delta-login-submit {
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.8rem 1rem;
  border: 0;
  border-radius: 0.75rem;
  cursor: pointer;
  font: inherit;
  font-weight: 650;
  color: #061018;
  background: linear-gradient(135deg, #8fd4ff, #3b8dff);
  box-shadow: 0 10px 28px rgba(40, 120, 220, 0.35);
}

.delta-login-submit:hover {
  filter: brightness(1.05);
}

html[data-theme="light"] body.delta-login-page {
  --bg: #eef2f8;
  --ink: #0f172a;
  --muted: #475569;
  --line: rgba(30, 60, 110, 0.16);
  --glass: rgba(255, 255, 255, 0.86);
}

html[data-theme="light"] .delta-login-field input {
  background: #fff;
  border-color: rgba(30, 60, 110, 0.18);
}

html[data-theme="light"] .delta-login-error {
  color: #991b1b;
  background: rgba(254, 226, 226, 0.9);
}

.delta-login-brand img {
  height: 40px;
  width: auto;
  display: block;
  object-fit: contain;
}