:root {
  --ink: #0b0b0d;
  --ink-2: #141416;
  --ink-3: #1b1b1e;
  --paper: #f6f1e7;
  --paper-2: #efe8d8;
  --gold: #c9a227;
  --gold-soft: #e4c866;
  --cinnabar: #a3272f;
  --jade: #3d5849;
  --jade-soft: #6c8c76;
  --muted: #8b867c;
  --muted-dark: #59564f;
  --serif: 'Noto Serif SC', 'Cormorant Garamond', serif;
  --sans: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Helvetica Neue', sans-serif;
  --mono: 'IBM Plex Mono', monospace;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  background: var(--ink);
  color: var(--paper);
  font-family: var(--sans);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* NAV */
nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 5vw;
  background: rgba(11, 11, 13, 0.9);
  backdrop-filter: blur(16px) saturate(140%);
  -webkit-backdrop-filter: blur(16px) saturate(140%);
  border-bottom: 1px solid rgba(201, 162, 39, 0.12);
}

.nav-mark a {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--paper);
}

.nav-mark .seal {
  width: 20px;
  height: 20px;
  border: 1.4px solid var(--gold);
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--serif);
  font-size: 12px;
  color: var(--gold);
}

.nav-links {
  display: flex;
  gap: 6px;
  font-size: 13px;
  letter-spacing: .5px;
  color: var(--muted);
  align-items: center;
}

.nav-item a {
  padding: 10px 14px;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: color .3s ease;
  border-radius: 6px;
  text-decoration: none;
}

.nav-item a:hover {
  color: var(--gold-soft);
}

.nav-cta {
  border: 1px solid var(--gold);
  color: var(--gold) !important;
  padding: 8px 18px !important;
  border-radius: 2px;
  font-family: var(--mono);
  letter-spacing: 1.5px;
  font-size: 12px;
  transition: all .3s ease;
}

.nav-cta:hover {
  background: var(--gold);
  color: var(--ink) !important;
}

/* MAIN */
.register-container {
  max-width: 600px;
  margin: 120px auto 40px;
  padding: 40px;
  background: var(--ink-2);
  border-radius: 12px;
  border: 1px solid rgba(201, 162, 39, 0.15);
}

.register-header {
  text-align: center;
  margin-bottom: 40px;
}

.register-header h1 {
  font-family: var(--serif);
  font-size: 36px;
  font-weight: 700;
  color: var(--paper);
  margin-bottom: 10px;
}

.register-header .subtitle {
  font-size: 16px;
  color: var(--muted);
}

/* FORM */
.register-form {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.form-group label {
  font-family: var(--serif);
  font-size: 16px;
  font-weight: 600;
  color: var(--gold);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  background: var(--ink-3);
  border: 1px solid rgba(201, 162, 39, 0.2);
  border-radius: 6px;
  color: var(--paper);
  font-family: var(--sans);
  font-size: 15px;
  transition: border-color .3s ease, box-shadow .3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(201, 162, 39, 0.1);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--muted-dark);
}

/* ROLE SELECTOR */
.role-selector {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.role-options {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.role-btn {
  padding: 10px 18px;
  background: var(--ink-3);
  border: 1px solid rgba(201, 162, 39, 0.2);
  border-radius: 6px;
  color: var(--paper);
  font-family: var(--sans);
  font-size: 14px;
  cursor: pointer;
  transition: all .3s ease;
}

.role-btn:hover {
  border-color: var(--gold);
  background: rgba(201, 162, 39, 0.1);
}

.role-btn.selected {
  background: var(--gold);
  color: var(--ink);
  border-color: var(--gold);
}

.custom-role-btn {
  background: transparent;
  border-style: dashed;
  color: var(--muted);
}

.custom-role-btn:hover {
  color: var(--gold);
}

.custom-role-input {
  display: none;
}

/* SUBMIT BUTTON */
.submit-btn {
  padding: 16px 32px;
  background: var(--gold);
  color: var(--ink);
  border: none;
  border-radius: 6px;
  font-family: var(--serif);
  font-size: 18px;
  font-weight: 600;
  cursor: pointer;
  transition: all .3s ease;
  margin-top: 20px;
}

.submit-btn:hover {
  background: var(--gold-soft);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(201, 162, 39, 0.3);
}

/* MESSAGE */
.message {
  padding: 16px;
  border-radius: 6px;
  text-align: center;
  font-size: 16px;
  margin-top: 20px;
}

.message.success {
  background: rgba(61, 88, 73, 0.3);
  border: 1px solid var(--jade);
  color: var(--jade-soft);
}

.message.error {
  background: rgba(163, 39, 47, 0.3);
  border: 1px solid var(--cinnabar);
  color: #e88b8b;
}

/* FOOTER */
footer {
  margin-top: auto;
  padding: 40px 20px;
  text-align: center;
  border-top: 1px solid rgba(201, 162, 39, 0.1);
}

.f-mark {
  font-family: var(--serif);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--gold);
  margin-bottom: 8px;
}

.f-note {
  font-size: 12px;
  color: var(--muted);
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .register-container {
    margin: 100px 20px 40px;
    padding: 30px 20px;
  }

  .register-header h1 {
    font-size: 28px;
  }

  .role-options {
    flex-direction: column;
  }

  .role-btn {
    width: 100%;
    text-align: center;
  }
}