:root {
  --bg: #fafafa;
  --bg-subtle: #f4f4f5;
  --bg-muted: #e8e8ea;
  --border: #e4e4e7;
  --border-strong: #c8c8cc;
  --text: #18181b;
  --text-muted: #52525b;
  --text-light: #a1a1aa;
  --accent: #6b7280;
  --accent-hover: #4b5563;
  --accent-light: #f4f4f5;
  --accent-border: #d4d4d8;
  --success-bg: #ecfdf5;
  --success-border: #a7f3d0;
  --success-text: #065f46;
  --error-bg: #fef2f2;
  --error-border: #fecaca;
  --error-text: #991b1b;
  --radius: 8px;
  --radius-lg: 12px;
  --shadow-md: 0 4px 6px rgba(0,0,0,.07), 0 2px 4px rgba(0,0,0,.05);
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
  --ease: 0.15s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
body {
  font-family: var(--font);
  background: var(--bg-subtle);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

main {
  width: 100%;
  max-width: 400px;
}

.logo {
  text-align: center;
  margin-bottom: 2rem;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text);
}
.logo span { color: var(--accent); }

.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  padding: 2rem;
}

.card-header {
  text-align: center;
  margin-bottom: 1.5rem;
}
.card-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.375rem;
  letter-spacing: -0.025em;
}
.card-subtitle {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.flag {
  width: 20px;
  height: 15px;
  vertical-align: middle;
  margin: 0 2px;
  border-radius: 2px;
  flex-shrink: 0;
  display: inline-block;
}
.flag-inline {
  display: inline-block;
  vertical-align: -3px;
}
.custom-select-trigger .flag,
.custom-option .flag {
  margin: 0;
}
.custom-select-trigger #selectedCountry {
  flex: 1;
  text-align: left;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.banner {
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  margin-bottom: 1rem;
  font-size: 0.875rem;
  display: none;
}
.banner.show { display: block; }
.banner-success {
  background: var(--success-bg);
  border: 1px solid var(--success-border);
  color: var(--success-text);
}
.banner-error {
  background: var(--error-bg);
  border: 1px solid var(--error-border);
  color: var(--error-text);
}

.form-group { margin-bottom: 1rem; }

label {
  display: block;
  font-size: 0.8125rem;
  font-weight: 600;
  margin-bottom: 0.375rem;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

input[type="text"],
input[type="email"],
input[type="password"] {
  width: 100%;
  padding: 0.625rem 0.75rem;
  font-size: 0.9375rem;
  font-family: inherit;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  outline: none;
  transition: border-color var(--ease), box-shadow var(--ease);
}
input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(107, 114, 128, 0.15);
}
input.invalid { border-color: #fca5a5; }

.input-wrapper { position: relative; }

.password-toggle {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--text-light);
  cursor: pointer;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 0.25rem;
}
.password-toggle:hover { color: var(--accent); }

.helper-text {
  font-size: 0.75rem;
  margin-top: 0.375rem;
  color: var(--text-muted);
  min-height: 1rem;
}
.helper-text.error { color: #b91c1c; }

.checkbox-group {
  display: flex;
  align-items: center;
  margin-bottom: 1.25rem;
}
input[type="checkbox"] {
  width: 1rem;
  height: 1rem;
  margin-right: 0.5rem;
  cursor: pointer;
  accent-color: var(--accent);
}
.checkbox-label {
  font-size: 0.875rem;
  color: var(--text-muted);
  cursor: pointer;
  text-transform: none;
  letter-spacing: 0;
  margin-bottom: 0;
}

button[type="submit"] {
  width: 100%;
  padding: 0.625rem 1rem;
  font-size: 0.875rem;
  font-weight: 600;
  font-family: inherit;
  color: #fff;
  background: var(--accent);
  border: 1px solid transparent;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--ease), transform 0.05s;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
button[type="submit"]:hover:not(:disabled) { background: var(--accent-hover); }
button[type="submit"]:active:not(:disabled) { transform: translateY(1px); }
button[type="submit"]:focus { outline: 2px solid var(--accent); outline-offset: 2px; }
button[type="submit"]:disabled { opacity: 0.5; cursor: not-allowed; }
button[type="submit"].loading {
  color: transparent;
  position: relative;
}
button[type="submit"].loading::after {
  content: "";
  position: absolute;
  width: 1rem; height: 1rem;
  top: 50%; left: 50%;
  margin-left: -0.5rem; margin-top: -0.5rem;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spinner 0.6s linear infinite;
}
@keyframes spinner { to { transform: rotate(360deg); } }

.custom-select { position: relative; width: 100%; }
.custom-select-trigger {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  padding: 0.625rem 0.75rem;
  font-size: 0.9375rem;
  font-family: inherit;
  color: var(--text);
  background: #fff;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color var(--ease), box-shadow var(--ease);
  position: relative;
}
.custom-select-trigger::after {
  content: '';
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  width: 0; height: 0;
  border-left: 5px solid transparent;
  border-right: 5px solid transparent;
  border-top: 5px solid var(--text-muted);
  transition: transform var(--ease);
}
.custom-select.open .custom-select-trigger::after { transform: translateY(-50%) rotate(180deg); }
.custom-select-trigger:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(107, 114, 128, 0.15);
  outline: none;
}

.custom-options {
  position: absolute;
  top: calc(100% + 4px);
  left: 0; right: 0;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  max-height: 200px;
  overflow-y: auto;
  z-index: 1000;
  display: none;
}
.custom-select.open .custom-options { display: block; }
.custom-option {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 0.75rem;
  cursor: pointer;
  transition: background var(--ease);
}
.custom-option:hover { background: var(--accent-light); }
.custom-option.selected { background: var(--accent-light); color: var(--accent-hover); }

.hidden-select { display: none; }

.secondary-links {
  display: flex;
  justify-content: space-between;
  margin-top: 1rem;
  font-size: 0.8125rem;
}
.secondary-links a,
.back-link a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--ease);
}
.secondary-links a:hover,
.back-link a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}
.back-link {
  text-align: center;
  margin-top: 1.5rem;
  font-size: 0.8125rem;
}

@media (max-width: 480px) {
  .card { padding: 1.5rem; }
  .secondary-links { flex-direction: column; gap: 0.5rem; text-align: center; }
}

.hp-field {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  overflow: hidden;
}