/* Auth surfaces: splash + login
   Direction: deep ink canvas, luminous teal signal, Sora / Source Serif 4 */

:root {
  --auth-ink: #000000;
  --auth-ink-mid: #070b12;
  --auth-surface: rgba(10, 16, 28, 0.72);
  --auth-text: #e8eef6;
  --auth-muted: #8b9bb0;
  --auth-accent: #2ec8e8;
  --auth-accent-bright: #5ad8ff;
  --auth-accent-deep: #2b5cff;
  --auth-display: "Source Serif 4", Georgia, serif;
  --auth-ui: "Sora", "Segoe UI", sans-serif;
}

.auth-body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--auth-ui);
  color: var(--auth-text);
  background: var(--auth-ink);
  overflow-x: hidden;
}

.auth-messages {
  position: fixed;
  top: 1rem;
  left: 50%;
  transform: translateX(-50%);
  z-index: 20;
  list-style: none;
  margin: 0;
  padding: 0.65rem 1.1rem;
  background: var(--auth-surface);
  border: 1px solid color-mix(in srgb, var(--auth-accent) 35%, transparent);
  border-radius: 4px;
}

/* —— Splash (one composition) —— */

.splash {
  position: relative;
  min-height: 100vh;
  display: grid;
  align-items: end;
  padding: clamp(1.5rem, 5vw, 4rem);
}

.splash-plane {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background:
    radial-gradient(ellipse 90% 70% at 70% 20%, #0a2a48 0%, transparent 55%),
    radial-gradient(ellipse 60% 50% at 10% 80%, #0a1840 0%, transparent 50%),
    linear-gradient(165deg, #05080f 0%, var(--auth-ink) 45%, #000 100%);
}

.splash-grid {
  position: absolute;
  inset: -20%;
  background-image:
    linear-gradient(color-mix(in srgb, var(--auth-accent) 12%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in srgb, var(--auth-accent) 12%, transparent) 1px, transparent 1px);
  background-size: 48px 48px;
  transform: perspective(600px) rotateX(58deg) translateY(-8%);
  transform-origin: center top;
  opacity: 0.45;
  animation: grid-drift 28s linear infinite;
}

.splash-beam {
  position: absolute;
  width: 55%;
  height: 140%;
  top: -20%;
  right: -5%;
  background: linear-gradient(
    115deg,
    transparent 30%,
    color-mix(in srgb, var(--auth-accent) 22%, transparent) 48%,
    color-mix(in srgb, var(--auth-accent-bright) 18%, transparent) 52%,
    transparent 70%
  );
  filter: blur(2px);
  animation: beam-sweep 9s ease-in-out infinite alternate;
}

.splash-beam--soft {
  opacity: 0.55;
  animation-duration: 14s;
}

.splash-orbit {
  position: absolute;
  width: min(52vw, 420px);
  height: min(52vw, 420px);
  right: 8%;
  top: 12%;
  border: 1px solid color-mix(in srgb, var(--auth-accent) 28%, transparent);
  border-radius: 50%;
  animation: orbit-breathe 6.5s ease-in-out infinite;
}

.splash-orbit::after {
  content: "";
  position: absolute;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--auth-accent-bright);
  top: 8%;
  left: 50%;
  box-shadow: 0 0 18px var(--auth-accent);
  animation: orbit-dot 6.5s linear infinite;
}

.splash-content {
  position: relative;
  z-index: 2;
  max-width: min(40rem, 100%);
  animation: rise-in 0.9s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.splash-logo {
  display: block;
  width: min(100%, 640px);
  height: auto;
  margin: 0 0 1.5rem;
  filter: drop-shadow(0 0 28px color-mix(in srgb, var(--auth-accent) 35%, transparent));
}

.splash-brand {
  margin: 0 0 1.25rem;
  font-family: var(--auth-ui);
  font-weight: 700;
  font-size: clamp(1.75rem, 4.5vw, 2.6rem);
  letter-spacing: -0.04em;
  color: var(--auth-accent-bright);
  line-height: 1.05;
}

.splash-headline {
  margin: 0 0 0.85rem;
  font-family: var(--auth-display);
  font-weight: 560;
  font-size: clamp(1.35rem, 3.2vw, 1.85rem);
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--auth-text);
}

.splash-lead {
  margin: 0 0 1.75rem;
  font-size: 1.05rem;
  color: var(--auth-muted);
  max-width: 28rem;
  line-height: 1.5;
}

.splash-actions {
  display: flex;
  gap: 0.75rem;
}

/* —— Login —— */

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

.login-atmosphere {
  position: absolute;
  inset: 0;
  overflow: hidden;
  background:
    radial-gradient(ellipse 70% 50% at 50% 0%, #0a2a48 0%, transparent 55%),
    linear-gradient(180deg, #05080f 0%, var(--auth-ink) 100%);
}

.login-atmosphere .splash-grid {
  opacity: 0.28;
  animation-duration: 40s;
}

.login-panel {
  position: relative;
  z-index: 2;
  width: min(100%, 380px);
  padding: 2rem 0;
  animation: rise-in 0.7s cubic-bezier(0.22, 1, 0.36, 1) both;
}

.login-brand {
  display: inline-block;
  margin-bottom: 2rem;
  line-height: 0;
  text-decoration: none;
}

.login-logo {
  display: block;
  height: 36px;
  width: auto;
  max-width: min(280px, 80vw);
}

.login-title {
  margin: 0 0 0.35rem;
  font-family: var(--auth-display);
  font-size: 1.65rem;
  font-weight: 560;
  letter-spacing: -0.02em;
}

.login-lead {
  margin: 0 0 1.5rem;
  color: var(--auth-muted);
  font-size: 0.95rem;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--auth-muted);
}

.field input {
  appearance: none;
  background: color-mix(in srgb, var(--auth-ink-mid) 80%, #000);
  border: 1px solid color-mix(in srgb, var(--auth-accent) 22%, #2a3f36);
  border-radius: 4px;
  padding: 0.75rem 0.85rem;
  color: var(--auth-text);
  font-family: var(--auth-ui);
  font-size: 1rem;
  font-weight: 400;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.field input:focus {
  border-color: var(--auth-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--auth-accent) 22%, transparent);
}

.form-error {
  margin: 0 0 1rem;
  padding: 0.65rem 0.8rem;
  background: color-mix(in srgb, #8b2e2e 35%, transparent);
  border: 1px solid color-mix(in srgb, #c45c5c 40%, transparent);
  border-radius: 4px;
  color: #f0d0d0;
  font-size: 0.9rem;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.8rem 1.4rem;
  background: linear-gradient(180deg, var(--auth-accent) 0%, var(--auth-accent-deep) 100%);
  color: #031018;
  font-family: var(--auth-ui);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  transition: filter 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary:hover {
  filter: brightness(1.08);
  transform: translateY(-1px);
  box-shadow: 0 8px 28px color-mix(in srgb, var(--auth-accent) 35%, transparent);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-block {
  width: 100%;
  margin-top: 0.35rem;
}

@keyframes rise-in {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes grid-drift {
  from { background-position: 0 0; }
  to { background-position: 0 48px; }
}

@keyframes beam-sweep {
  from { transform: translateX(-4%) rotate(0.5deg); opacity: 0.7; }
  to { transform: translateX(6%) rotate(-0.5deg); opacity: 1; }
}

@keyframes orbit-breathe {
  0%, 100% { transform: scale(1); opacity: 0.7; }
  50% { transform: scale(1.04); opacity: 1; }
}

@keyframes orbit-dot {
  from { transform: rotate(0deg) translateX(min(26vw, 210px)) rotate(0deg); }
  to { transform: rotate(360deg) translateX(min(26vw, 210px)) rotate(-360deg); }
}

@media (max-width: 640px) {
  .splash {
    align-items: center;
    padding: 1.5rem max(1rem, env(safe-area-inset-left))
      max(2rem, env(safe-area-inset-bottom))
      max(1rem, env(safe-area-inset-right));
  }

  .splash-orbit {
    width: 70vw;
    height: 70vw;
    right: -15%;
    top: 5%;
    opacity: 0.55;
  }

  .splash-logo {
    width: min(100%, 100%);
  }

  .splash-brand {
    font-size: clamp(1.6rem, 8vw, 2.1rem);
  }

  .splash-actions,
  .login-form .form-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .splash-actions .btn-primary,
  .splash-actions .btn-ghost,
  .login-form .btn-primary {
    width: 100%;
    min-height: 2.85rem;
  }

  .login-shell {
    padding: 1.25rem max(1rem, env(safe-area-inset-left))
      max(2rem, env(safe-area-inset-bottom))
      max(1rem, env(safe-area-inset-right));
  }

  .login-panel {
    width: 100%;
    max-width: none;
  }
}