:root {
  --bg0: #07090f;
  --bg1: #0e1420;
  --card: rgba(16, 22, 34, 0.78);
  --line: rgba(255, 255, 255, 0.1);
  --text: #eef3f8;
  --muted: #8b98ab;
  --accent: #4aa3ff;
  --accent-2: #2578d6;
  --accent-soft: rgba(74, 163, 255, 0.14);
  --danger: #e85d5d;
  --radius: 18px;
  --font-display: "Syne", "DM Sans", system-ui, sans-serif;
  --font-body: "DM Sans", system-ui, sans-serif;
}

* {
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg0);
  overflow-x: hidden;
}

.login-atmosphere {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(900px 520px at 12% 18%, rgba(74, 163, 255, 0.22), transparent 58%),
    radial-gradient(700px 480px at 88% 82%, rgba(37, 120, 214, 0.16), transparent 55%),
    radial-gradient(500px 360px at 70% 12%, rgba(120, 90, 255, 0.08), transparent 50%),
    linear-gradient(155deg, var(--bg0), var(--bg1) 55%, #0a1018);
}

.login-atmosphere::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.35;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(ellipse 70% 60% at 50% 40%, #000 20%, transparent 75%);
}

.login-shell {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  align-items: center;
  gap: clamp(28px, 5vw, 72px);
  width: min(1080px, 100%);
  margin: 0 auto;
  padding: max(28px, env(safe-area-inset-top)) max(24px, env(safe-area-inset-right))
    max(28px, env(safe-area-inset-bottom)) max(24px, env(safe-area-inset-left));
  animation: loginFade 0.7s ease both;
}

@keyframes loginFade {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.login-brand-pane {
  padding-inline: 8px;
  animation: brandIn 0.85s cubic-bezier(0.22, 1, 0.36, 1) both;
}

@keyframes brandIn {
  from {
    opacity: 0;
    transform: translateX(-14px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.login-mark {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-size: clamp(1.65rem, 3.2vw, 2.15rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
  background: linear-gradient(120deg, #fff 20%, var(--accent) 95%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.login-hero {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.2vw, 3.1rem);
  font-weight: 700;
  letter-spacing: -0.035em;
  line-height: 1.08;
  color: var(--text);
}

.login-tagline {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 0.98rem;
  letter-spacing: 0.01em;
}

.login-card {
  width: min(100%, 400px);
  justify-self: end;
  padding: 30px 28px 26px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--card);
  backdrop-filter: blur(16px);
  box-shadow:
    0 30px 80px rgba(0, 0, 0, 0.45),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
  animation: cardIn 0.8s cubic-bezier(0.22, 1, 0.36, 1) 0.08s both;
}

@keyframes cardIn {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.985);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.login-form-title {
  margin: 0 0 6px;
  font-family: var(--font-display);
  font-size: 1.45rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.login-sub {
  margin: 0 0 22px;
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.4;
}

.field {
  display: grid;
  gap: 6px;
  margin-bottom: 14px;
}

.field span {
  font-size: 0.76rem;
  font-weight: 650;
  color: var(--muted);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.field input {
  width: 100%;
  height: 46px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.32);
  color: var(--text);
  font: inherit;
  font-size: 0.95rem;
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.field input:focus {
  border-color: color-mix(in srgb, var(--accent) 55%, var(--line));
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.login-error {
  margin: 0 0 12px;
  padding: 10px 12px;
  border-radius: 10px;
  background: color-mix(in srgb, var(--danger) 16%, transparent);
  color: #ffb4b4;
  font-size: 0.86rem;
}

.login-btn {
  width: 100%;
  height: 46px;
  border: none;
  border-radius: 12px;
  background: linear-gradient(180deg, var(--accent), var(--accent-2));
  color: #fff;
  font: inherit;
  font-weight: 700;
  letter-spacing: 0.01em;
  cursor: pointer;
  transition: filter 0.15s ease, transform 0.15s ease;
}

.login-btn:hover:not(:disabled) {
  filter: brightness(1.07);
}

.login-btn:active:not(:disabled) {
  transform: translateY(1px);
}

.login-btn:disabled {
  opacity: 0.7;
  cursor: wait;
}

.login-btn-ghost {
  margin-top: 10px;
  background: transparent;
  border: 1px solid var(--line);
  color: var(--text);
  font-weight: 600;
}

.login-btn-ghost:hover:not(:disabled) {
  filter: none;
  background: rgba(255, 255, 255, 0.04);
}

@media (max-width: 860px) {
  .login-shell {
    grid-template-columns: 1fr;
    align-content: center;
    gap: 28px;
  }

  .login-brand-pane {
    text-align: center;
    padding-inline: 4px;
  }

  .login-hero {
    font-size: clamp(1.7rem, 7vw, 2.2rem);
  }

  .login-card {
    justify-self: center;
    width: min(100%, 420px);
  }
}

@media (max-width: 480px) {
  .login-card {
    padding: 24px 18px 20px;
  }

  .login-form-title {
    font-size: 1.28rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .login-shell,
  .login-brand-pane,
  .login-card {
    animation: none;
  }
}