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

:root {
  --primary: #00A884;
  --primary-hover: #008f6f;
  --dark: #1A1A2E;
  --sidebar: #111B21;
  --accent: #25D366;
  --text: #e8eaed;
  --text-muted: #8a9bb0;
  --card-bg: rgba(255,255,255,0.05);
  --border: rgba(255,255,255,0.08);
  --input-bg: rgba(255,255,255,0.07);
  --radius: 10px;
  --error: #ff6b6b;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: linear-gradient(135deg, #0d1117 0%, #111B21 50%, #1A1A2E 100%);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
}

.auth-wrapper {
  width: 100%;
  max-width: 480px;
  padding: 20px;
}

.auth-wrapper.wide { max-width: 580px; }

.auth-card {
  background: rgba(26, 26, 46, 0.85);
  border: 1px solid var(--border);
  border-radius: 18px;
  padding: 40px 36px;
  backdrop-filter: blur(20px);
  box-shadow: 0 25px 60px rgba(0,0,0,0.5);
}

.logo-block {
  text-align: center;
  margin-bottom: 32px;
}

.logo-mark {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border-radius: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 30px;
  margin-bottom: 14px;
  box-shadow: 0 8px 24px rgba(0,168,132,0.35);
}

.logo-name {
  font-size: 22px;
  font-weight: 700;
  background: linear-gradient(90deg, #fff 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.auth-title {
  font-size: 26px;
  font-weight: 700;
  margin-bottom: 6px;
  color: #fff;
}

.auth-subtitle {
  font-size: 14px;
  color: var(--text-muted);
  margin-bottom: 28px;
}

.form-group { margin-bottom: 18px; }

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.form-input {
  width: 100%;
  padding: 12px 14px;
  background: var(--input-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: #fff;
  font-size: 15px;
  outline: none;
  transition: border-color 0.2s, background 0.2s;
}

.form-input:focus {
  border-color: var(--primary);
  background: rgba(0,168,132,0.08);
}

.form-input::placeholder { color: rgba(255,255,255,0.25); }

.input-wrap { position: relative; }
.input-wrap .form-input { padding-right: 44px; }
.toggle-pw {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 18px;
  padding: 4px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.btn-primary {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  border: none;
  border-radius: var(--radius);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.1s;
  margin-top: 6px;
  letter-spacing: 0.3px;
}

.btn-primary:hover { opacity: 0.92; }
.btn-primary:active { transform: scale(0.99); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

.auth-links {
  text-align: center;
  margin-top: 22px;
  font-size: 14px;
  color: var(--text-muted);
}

.auth-links a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 500;
}

.auth-links a:hover { text-decoration: underline; }

.divider {
  height: 1px;
  background: var(--border);
  margin: 22px 0;
}

/* Plan cards */
.plan-label {
  display: block;
  font-size: 13px;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 10px;
}

.plan-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 20px;
}

.plan-card {
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 14px 10px;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.2s, background 0.2s;
  position: relative;
}

.plan-card:hover { border-color: rgba(0,168,132,0.4); }

.plan-card.selected {
  border-color: var(--primary);
  background: rgba(0,168,132,0.1);
}

.plan-card input[type=radio] { display: none; }

.plan-name {
  font-size: 13px;
  font-weight: 600;
  color: #fff;
  margin-bottom: 4px;
}

.plan-price {
  font-size: 18px;
  font-weight: 700;
  color: var(--primary);
}

.plan-period {
  font-size: 11px;
  color: var(--text-muted);
}

.plan-card.selected .plan-check {
  display: block;
}

.plan-check {
  display: none;
  position: absolute;
  top: 6px;
  right: 6px;
  width: 18px;
  height: 18px;
  background: var(--primary);
  border-radius: 50%;
  font-size: 11px;
  color: #fff;
  text-align: center;
  line-height: 18px;
}

/* Toast */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  padding: 12px 20px;
  border-radius: 10px;
  font-size: 14px;
  font-weight: 500;
  z-index: 2000;
  animation: slideUp 0.3s ease;
  max-width: 340px;
}

.toast-info { background: #2d3748; color: #fff; }
.toast-success { background: #00A884; color: #fff; }
.toast-error { background: #e53e3e; color: #fff; }
.hidden { display: none !important; }

@keyframes slideUp {
  from { transform: translateY(12px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.field-error {
  font-size: 12px;
  color: var(--error);
  margin-top: 4px;
}

@media (max-width: 540px) {
  .auth-card { padding: 28px 20px; }
  .form-row { grid-template-columns: 1fr; }
  .plan-cards { grid-template-columns: 1fr; }
}