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

:root {
  --text: #1A1A1A;
  --text-muted: #888;
  --bg: #FAFAFA;
  --border: #E0E0E0;
  --accent: #2DD4BF;
  --accent-dark: #14B8A6;
}

html { -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body {
  font-family: 'Inter', -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
}
a { color: inherit; text-decoration: none; }

/* ===== Nav ===== */
.signup-nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 24px 48px;
  background: rgba(10,10,10,0.92);
  backdrop-filter: blur(16px);
}
.signup-nav img { height: 64px; }
.nav-link {
  font-size: 0.82rem; color: rgba(255,255,255,0.5);
  transition: color 0.3s;
}
.nav-link:hover { color: #fff; }

/* ===== Layout ===== */
.signup-layout {
  display: flex; min-height: 100vh;
}

/* ===== Sidebar ===== */
.signup-sidebar {
  width: 480px; flex-shrink: 0;
  background: var(--text);
  color: #fff;
  display: flex; align-items: flex-start; justify-content: center;
  padding: 210px 64px 48px;
  position: sticky; top: 0; height: 100vh;
}
.sidebar-dark { background: #111; }
.sidebar-accent { background: #0D4F47; }
.sidebar-warm { background: #3D2C1E; }

.sidebar-content { max-width: 280px; margin: 0 auto; }
.sidebar-icon {
  display: none;
}
.sidebar-content h2 {
  font-size: 1.8rem; font-weight: 300; line-height: 1.2;
  letter-spacing: -0.03em; margin-bottom: 16px;
}
.sidebar-content p {
  font-size: 0.9rem; color: rgba(255,255,255,0.6);
  font-weight: 300; line-height: 1.7; margin-bottom: 40px;
}
.sidebar-perks { list-style: none; }
.sidebar-perks li {
  display: flex; align-items: center; gap: 12px;
  font-size: 0.88rem; font-weight: 300; padding: 8px 0;
  color: rgba(255,255,255,0.7);
}
.perk-check {
  color: var(--accent); font-weight: 600; font-size: 0.85rem;
}

/* ===== Form Side ===== */
.signup-form-side {
  flex: 1; display: flex; align-items: flex-start; justify-content: center;
  padding: 160px 64px 64px;
}
.signup-form-container {
  max-width: 480px; width: 100%;
}

/* Step Indicator */
.signup-step-indicator {
  display: flex; align-items: center; gap: 0; margin-bottom: 40px;
}
.step-dot {
  width: 10px; height: 10px; border-radius: 50%;
  border: 1.5px solid var(--border); background: transparent;
  transition: all 0.4s;
}
.step-dot.active { background: var(--text); border-color: var(--text); }
.step-line {
  flex: 1; height: 1px; background: var(--border);
  margin: 0 8px; transition: background 0.4s;
}
.step-line.active { background: var(--text); }

.signup-form-container h1 {
  font-size: 1.8rem; font-weight: 300; letter-spacing: -0.03em;
  margin-bottom: 8px;
}
.signup-subtitle {
  font-size: 0.82rem; color: var(--text-muted); font-weight: 400;
  margin-bottom: 40px; text-transform: uppercase; letter-spacing: 0.06em;
}

/* Form Elements */
.form-group { margin-bottom: 28px; }
.form-group label {
  display: block; font-size: 0.75rem; font-weight: 500;
  text-transform: uppercase; letter-spacing: 0.08em;
  margin-bottom: 10px; color: var(--text-muted);
}
.form-group input:not([type="radio"]):not([type="checkbox"]),
.form-group select,
.form-group textarea {
  width: 100%; padding: 14px 0;
  border: none; border-bottom: 1px solid var(--border);
  background: transparent; color: var(--text);
  font-size: 1rem; font-family: inherit;
  transition: border-color 0.3s; outline: none;
  border-radius: 0; -webkit-appearance: none;
}
.form-group input:not([type="radio"]):not([type="checkbox"]):focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--text);
}
.form-group input[type="radio"],
.form-group input[type="checkbox"] {
  width: auto; flex-shrink: 0;
  -webkit-appearance: auto; appearance: auto;
  accent-color: var(--text);
}
.form-group textarea {
  resize: vertical; min-height: 100px;
  padding: 14px; border: 1px solid var(--border);
}
.form-group textarea:focus { border-color: var(--text); }
.form-group select { cursor: pointer; }

.form-row { display: flex; gap: 24px; }
.form-row .form-group { flex: 1; }

/* Price Input */
.price-input {
  display: flex; align-items: center; gap: 0;
  border-bottom: 1px solid var(--border);
  transition: border-color 0.3s;
}
.price-input:focus-within { border-color: var(--text); }
.price-input input {
  border: none !important; padding: 14px 4px;
}
.price-prefix {
  font-size: 1.2rem; font-weight: 300; color: var(--text-muted);
  padding-right: 4px;
}
.price-suffix {
  font-size: 0.85rem; color: var(--text-muted); font-weight: 300;
  white-space: nowrap;
}

/* Radio & Checkbox Groups */
.radio-group, .checkbox-group {
  display: flex; flex-direction: column; gap: 0;
}
.radio-option, .checkbox-option {
  display: flex; align-items: center; gap: 10px;
  padding: 12px 0; border-bottom: 1px solid rgba(0,0,0,0.04);
  cursor: pointer; font-size: 0.92rem; font-weight: 400;
  text-transform: none; letter-spacing: 0;
  color: var(--text);
}
.radio-option:last-child, .checkbox-option:last-child { border-bottom: none; }
.radio-option input, .checkbox-option input {
  width: auto; accent-color: var(--text);
  padding: 0; border: none;
}

.terms { margin-top: 8px; }
.terms .checkbox-option {
  font-size: 0.82rem; color: var(--text-muted);
  border: none; padding: 0;
}
.terms a { color: var(--text); text-decoration: underline; }

/* Submit Button */
.btn-submit {
  width: 100%; padding: 16px; margin-top: 12px;
  background: var(--text); color: #fff; border: 1px solid var(--text);
  font-size: 0.92rem; font-weight: 500; font-family: inherit;
  cursor: pointer; transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  letter-spacing: 0.02em;
}
.btn-submit:hover {
  background: transparent; color: var(--text);
}

/* Footer */
.signup-footer-text {
  margin-top: 32px; text-align: center;
}
.signup-footer-text a {
  font-size: 0.82rem; color: var(--text-muted);
  transition: color 0.3s;
}
.signup-footer-text a:hover { color: var(--text); }

/* ===== Responsive ===== */
@media (max-width: 900px) {
  .signup-sidebar { display: none; }
  .signup-form-side { padding: 100px 24px 48px; }
  .signup-nav { padding: 20px 24px; }
  .form-row { flex-direction: column; gap: 0; }
}