:root {
  --bg:        #07090f;
  --bg-2:      #0c0f1a;
  --bg-3:      #111422;
  --surface:   rgba(255,255,255,.04);
  --border:    rgba(255,255,255,.08);
  --border-hi: rgba(0,220,180,.25);
  --accent:    #00dcb4;
  --accent-2:  #00b8f5;
  --text:      #e8eaf0;
  --muted:     #8a90a4;
  --faint:     #3a3f54;
  --error:     #ff5f57;
  --error-bg:  rgba(255,95,87,.08);
  --error-border: rgba(255,95,87,.3);
  --font-head: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

@import url('https://fonts.googleapis.com/css2?family=Syne:wght@400;500;600;700;800&family=DM+Sans:ital,wght@0,300;0,400;0,500;1,300&display=swap');

body {
  font-family: var(--font-body);
  background-color: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,220,180,.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,220,180,.04) 1px, transparent 1px);
  background-size: 48px 48px;
  pointer-events: none;
  z-index: 0;
}

body::after {
  content: '';
  position: fixed;
  inset: 0;
  background: radial-gradient(ellipse 70% 50% at 50% 0%, rgba(0,220,180,.09) 0%, transparent 60%);
  pointer-events: none;
  z-index: 0;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(24px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes shimmer {
  0%   { background-position: -200% center; }
  100% { background-position:  200% center; }
}
@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: .5; transform: scale(.8); }
}

.signup__main {
  position: relative;
  z-index: 1;
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: stretch;
}

.signup__panel {
  background: linear-gradient(160deg, rgba(0,220,180,.07), rgba(0,184,245,.04));
  border-right: 1px solid var(--border);
  padding: 3.5rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
}

.signup__panel::before {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 320px;
  height: 320px;
  background: radial-gradient(ellipse, rgba(0,220,180,.12), transparent 70%);
  pointer-events: none;
}

.signup__panel-body {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 3rem 0;
}


.signup__panel-tagline {
  font-family: var(--font-head);
  font-size: clamp(1.6rem, 2.5vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -.035em;
  line-height: 1.1;
  margin-bottom: 1rem;
}

.signup__panel-tagline em {
  font-style: normal;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent));
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 4s linear infinite;
}

.signup__panel-sub {
  font-size: .9rem;
  color: var(--muted);
  line-height: 1.7;
  max-width: 320px;
  margin-bottom: 2.5rem;
  font-weight: 300;
}

.signup__perks {
  display: flex;
  flex-direction: column;
  gap: .9rem;
}

.signup__perk {
  display: flex;
  align-items: flex-start;
  gap: .75rem;
}

.signup__perk-icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  background: rgba(0,220,180,.1);
  border: 1px solid var(--border-hi);
  display: grid;
  place-items: center;
  font-size: .9rem;
  flex-shrink: 0;
  margin-top: .05rem;
}

.signup__perk-text strong {
  display: block;
  font-size: .88rem;
  font-weight: 500;
  color: var(--text);
  margin-bottom: .1rem;
}

.signup__perk-text span {
  font-size: .78rem;
  color: var(--faint);
}

.signup__panel-footer {
  font-size: .75rem;
  color: var(--faint);
}

.signup__main-section {
  padding: 3.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  max-width: 520px;
  width: 100%;
  margin-inline: auto;
}

.signup__main-title {
  margin-bottom: 2rem;
  animation: fadeUp .6s ease forwards;
}

.signup__main-title h1 {
  font-family: var(--font-head);
  font-size: 1.75rem;
  font-weight: 800;
  letter-spacing: -.035em;
  color: var(--text);
  margin-bottom: .4rem;
}

.signup__main-title p {
  font-size: .9rem;
  color: var(--muted);
  font-weight: 300;
}

.signup__error-banner {
  background: var(--error-bg);
  border: 1px solid var(--error-border);
  border-radius: 10px;
  padding: .85rem 1rem;
  margin-bottom: 1.25rem;
  font-size: .85rem;
  color: var(--error);
  animation: fadeUp .4s ease forwards;
}

.signup__error-banner ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.signup__error-banner p {
  margin: 0;
  font-weight: 500;
}

.signup__error-banner li::before {
  content: '⚠ ';
  font-size: .75rem;
}

form {
  animation: fadeUp .6s .1s ease both;
}

.signup__main-fieldset {
  border: none;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.signup__main-fieldset > div {
  display: flex;
  flex-direction: column;
  gap: .35rem;
}

.signup__main-fieldset label {
  font-size: .82rem;
  font-weight: 500;
  color: var(--muted);
  letter-spacing: .02em;
}

.signup__main-fieldset input,
.signup__main-fieldset select,
.signup__main-fieldset textarea {
  width: 100%;
  background: var(--bg-3);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: .75rem 1rem;
  font-size: .9rem;
  font-family: var(--font-body);
  color: var(--text);
  outline: none;
  transition: border-color .2s, box-shadow .2s;
  -webkit-appearance: none;
}

.signup__main-fieldset input::placeholder,
.signup__main-fieldset textarea::placeholder {
  color: var(--faint);
}

.signup__main-fieldset input:focus,
.signup__main-fieldset select:focus,
.signup__main-fieldset textarea:focus {
  border-color: var(--border-hi);
  box-shadow: 0 0 0 3px rgba(0,220,180,.08);
}

.signup__main-fieldset input.error {
  border-color: var(--error-border);
}

.signup__main-fieldset [id$="-help"] {
  font-size: .75rem;
  color: var(--faint);
  line-height: 1.5;
}

.signup__main-fieldset [id$="-errors"] {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: .2rem;
}

.signup__main-fieldset [id$="-errors"] li {
  font-size: .78rem;
  color: var(--error);
  display: flex;
  align-items: center;
  gap: .3rem;
}

.signup__main-fieldset [id$="-errors"] li::before {
  content: '⚠';
  font-size: .7rem;
}

.signup__main-button {
  margin-top: 1.75rem;
  animation: fadeUp .6s .2s ease both;
}

.signup__main-button button {
  width: 100%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #07090f;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: .95rem;
  letter-spacing: -.01em;
  padding: .9rem 1.5rem;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: transform .2s, box-shadow .2s;
}

.signup__main-button button:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 32px rgba(0,220,180,.3);
}

.signup__main-button button:active {
  transform: translateY(0);
}

.signup__main-login {
  margin-top: 1.5rem;
  text-align: center;
  animation: fadeUp .6s .3s ease both;
}

.signup__main-login p {
  font-size: .85rem;
  color: var(--faint);
}

.signup__main-login a {
  color: var(--accent);
  font-weight: 500;
  transition: color .2s;
}

.signup__main-login a:hover {
  color: #00f5c8;
  text-decoration: underline;
  text-underline-offset: 3px;
}

@media (max-width: 900px) {
  .signup__main {
    grid-template-columns: 1fr;
  }
  .signup__panel {
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 2.5rem 2rem;
  }
  .signup__panel-body {
    padding: 1.5rem 0;
  }
  .signup__panel-tagline { font-size: 1.5rem; }
  .signup__main-section {
    padding: 2.5rem 2rem;
  }
}

@media (max-width: 480px) {
  .signup__panel { padding: 1.75rem 1.25rem; }
  .signup__main-section { padding: 2rem 1.25rem; }
  .signup__main-title h1 { font-size: 1.5rem; }
}