:root {
  --ink: #14201a;
  --ink-soft: #2a3b32;
  --muted: #5a6d62;
  --paper: #e7efe8;
  --paper-2: #d5e4d9;
  --moss: #1f6f54;
  --moss-deep: #143d2f;
  --signal: #b6e34a;
  --line: color-mix(in srgb, var(--ink) 12%, transparent);
  --danger: #8f2f22;
  --danger-bg: #f8e8e4;
  --font-display: "Syne", "Segoe UI", sans-serif;
  --font-body: "Manrope", "Segoe UI", sans-serif;
  --safe-top: env(safe-area-inset-top, 0px);
  --safe-right: env(safe-area-inset-right, 0px);
  --safe-bottom: env(safe-area-inset-bottom, 0px);
  --safe-left: env(safe-area-inset-left, 0px);
  --ease: cubic-bezier(.22, 1, .36, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body.auth {
  margin: 0;
  min-height: 100%;
  min-height: 100dvh;
  font-family: var(--font-body);
  color: var(--ink);
  background:
    radial-gradient(120% 80% at 80% -10%, color-mix(in srgb, var(--signal) 28%, transparent), transparent 55%),
    radial-gradient(90% 70% at -10% 20%, color-mix(in srgb, var(--moss) 22%, transparent), transparent 50%),
    linear-gradient(165deg, var(--paper) 0%, var(--paper-2) 48%, #c5d6c9 100%);
  background-attachment: fixed;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: inherit; text-decoration-thickness: 1px; text-underline-offset: .18em; }
a:hover { color: var(--moss-deep); }

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: var(--paper);
  padding: .6rem 1rem;
  z-index: 100;
}
.skip-link:focus { left: var(--safe-left); top: var(--safe-top); }

.auth-nav {
  position: absolute;
  inset: max(.9rem, var(--safe-top)) max(1.1rem, var(--safe-right)) auto max(1.1rem, var(--safe-left));
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.auth-nav a {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: -.02em;
  text-decoration: none;
}
.nav-mark { font-size: 1.05rem; opacity: .55; }
.nav-back {
  font-size: .92rem;
  border-bottom: 1px solid color-mix(in srgb, var(--ink) 35%, transparent);
  padding-bottom: .1rem;
  transition: border-color .25s var(--ease), color .25s var(--ease);
}
.nav-back:hover { border-color: var(--moss); color: var(--moss-deep); }

.auth-stage {
  position: relative;
  min-height: 100svh;
  min-height: 100dvh;
  display: grid;
  align-items: center;
  padding:
    max(5rem, calc(var(--safe-top) + 4rem))
    max(1.25rem, var(--safe-right))
    max(2rem, calc(var(--safe-bottom) + 1.25rem))
    max(1.25rem, var(--safe-left));
  overflow: hidden;
  isolation: isolate;
}

.auth-visual {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}
.auth-mesh {
  position: absolute;
  inset: -8%;
  background:
    radial-gradient(ellipse 55% 45% at 72% 28%, color-mix(in srgb, var(--moss) 45%, transparent), transparent 70%),
    radial-gradient(ellipse 40% 35% at 18% 72%, color-mix(in srgb, var(--signal) 35%, transparent), transparent 65%),
    linear-gradient(120deg, transparent 40%, color-mix(in srgb, var(--ink) 6%, transparent) 100%);
  animation: meshDrift 18s ease-in-out infinite alternate;
}
.auth-beam {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(105deg, transparent 0%, transparent 42%, color-mix(in srgb, var(--paper) 55%, transparent) 50%, transparent 58%, transparent 100%);
  mix-blend-mode: soft-light;
  opacity: .7;
  animation: beamSweep 12s var(--ease) infinite;
}
.auth-paths {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: .85;
}
.auth-paths .path {
  fill: none;
  stroke: color-mix(in srgb, var(--moss-deep) 42%, transparent);
  stroke-width: 1.25;
  stroke-linecap: round;
  stroke-dasharray: 8 14;
  animation: pathFlow 22s linear infinite;
}
.auth-paths .path-b {
  stroke: color-mix(in srgb, var(--ink) 28%, transparent);
  stroke-dasharray: 2 12;
  animation-duration: 28s;
  animation-direction: reverse;
}
.auth-paths .path-c {
  stroke: color-mix(in srgb, var(--moss) 55%, transparent);
  stroke-width: 1.6;
  animation-duration: 26s;
}

.auth-layout {
  position: relative;
  z-index: 1;
  width: min(72rem, 100%);
  margin-inline: auto;
  display: grid;
  gap: clamp(2rem, 5vw, 3.5rem);
  align-items: end;
}
@media (min-width: 900px) {
  .auth-layout {
    grid-template-columns: minmax(0, 1.15fr) minmax(18rem, 22rem);
    align-items: center;
  }
}

.auth-intro { max-width: 28rem; }
.auth-brand {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(4.2rem, 14vw, 7.5rem);
  line-height: .88;
  letter-spacing: -.06em;
  animation: riseIn .9s var(--ease) both;
}
.auth-headline {
  margin: .85rem 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.45rem, 1.1rem + 1.6vw, 2.1rem);
  line-height: 1.15;
  letter-spacing: -.03em;
  max-width: 14ch;
  text-wrap: balance;
  animation: riseIn .9s var(--ease) .08s both;
}
.auth-lede {
  margin: .75rem 0 0;
  font-size: clamp(1rem, .92rem + .3vw, 1.1rem);
  color: var(--ink-soft);
  max-width: 32ch;
  line-height: 1.55;
  animation: riseIn .9s var(--ease) .16s both;
}

/* Interaction surface — form only */
.auth-panel {
  width: 100%;
  animation: riseIn .9s var(--ease) .22s both;
}
.auth-form {
  display: grid;
  gap: .85rem;
}
.auth-form label {
  display: grid;
  gap: .35rem;
  font-size: .82rem;
  font-weight: 600;
  color: var(--ink-soft);
  letter-spacing: .01em;
}
.auth-form input {
  width: 100%;
  min-height: 48px;
  padding: .7rem .95rem;
  border: 1px solid color-mix(in srgb, var(--ink) 18%, transparent);
  border-radius: 10px;
  background: color-mix(in srgb, var(--paper) 72%, #fff);
  color: var(--ink);
  font: inherit;
  font-size: 1rem;
  transition: border-color .2s var(--ease), background .2s var(--ease);
  -webkit-appearance: none;
  appearance: none;
}
.auth-form input:hover {
  border-color: color-mix(in srgb, var(--moss) 45%, transparent);
}
.auth-form input:focus {
  outline: none;
  border-color: var(--moss);
  background: #fff;
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--moss) 18%, transparent);
}
.auth-form input::placeholder { color: color-mix(in srgb, var(--muted) 75%, transparent); }

.auth-alert {
  margin: 0 0 .15rem;
  padding: .75rem .9rem;
  border-radius: 10px;
  background: var(--danger-bg);
  color: var(--danger);
  font-size: .9rem;
  line-height: 1.4;
  border: 1px solid color-mix(in srgb, var(--danger) 22%, transparent);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: .7rem 1.25rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: .95rem;
  text-decoration: none;
  border-radius: 10px;
  cursor: pointer;
  transition: transform .2s var(--ease), background .2s var(--ease), border-color .2s var(--ease);
  -webkit-tap-highlight-color: transparent;
}
.btn:active { transform: scale(.98); }
.btn-primary {
  width: 100%;
  margin-top: .25rem;
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--ink);
}
.btn-primary:hover {
  background: var(--moss-deep);
  border-color: var(--moss-deep);
  color: var(--paper);
}

.auth-foot {
  position: relative;
  z-index: 2;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .35rem .55rem;
  padding:
    0 max(1.25rem, var(--safe-right))
    max(1.35rem, calc(var(--safe-bottom) + .85rem))
    max(1.25rem, var(--safe-left));
  margin-top: -1.25rem;
  font-size: .8rem;
  color: var(--muted);
  line-height: 1.45;
}
.auth-foot .foot-org {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: .84rem;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -.01em;
  border-bottom: 1px solid transparent;
}
.auth-foot .foot-org:hover {
  color: var(--moss-deep);
  border-bottom-color: var(--moss);
}
.auth-foot .foot-web {
  color: var(--moss-deep);
  font-weight: 600;
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--moss) 45%, transparent);
}
.auth-foot .foot-web:hover { color: var(--ink); border-bottom-color: var(--moss); }
.auth-foot .foot-sep { opacity: .45; }

@keyframes riseIn {
  from { opacity: 0; transform: translateY(18px); }
  to { opacity: 1; transform: none; }
}
@keyframes meshDrift {
  from { transform: translate3d(0, 0, 0) scale(1); }
  to { transform: translate3d(-2.5%, 1.5%, 0) scale(1.04); }
}
@keyframes beamSweep {
  0%, 100% { transform: translateX(-8%); opacity: .45; }
  50% { transform: translateX(6%); opacity: .8; }
}
@keyframes pathFlow {
  to { stroke-dashoffset: -220; }
}

@media (prefers-reduced-motion: reduce) {
  .auth-mesh, .auth-beam, .auth-paths .path,
  .auth-brand, .auth-headline, .auth-lede, .auth-panel {
    animation: none !important;
  }
}

@media (max-width: 520px) {
  .auth-brand { font-size: clamp(3.6rem, 20vw, 4.8rem); }
  .auth-layout { align-items: stretch; }
}