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

html {
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

:root {
  --bg: #0f1923;
  --surface: #1a2433;
  --primary: #3390ec;
  --primary-grad: linear-gradient(135deg, #1b6dc4, #3390ec);
  --text: #eef3f8;
  --text2: #7d8fa3;
  --border: #0a1420;
  --error: #e74c3c;
  --input-bg: #0f1923;
  --radius: 12px;
}

body {
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text);
  overscroll-behavior: none;
  padding: env(safe-area-inset-top, 0) env(safe-area-inset-right, 0)
           env(safe-area-inset-bottom, 0) env(safe-area-inset-left, 0);
}

.auth-wrap {
  width: 100%;
  max-width: 420px;
  padding: 24px 16px;
}

.auth-logo {
  text-align: center;
  margin-bottom: 36px;
}

.logo-circle {
  width: 90px;
  height: 90px;
  background: var(--primary-grad);
  border-radius: 28px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 18px;
  box-shadow: 0 8px 32px rgba(51, 144, 236, 0.4);
  animation: logoPulse 3s ease-in-out infinite;
}

@keyframes logoPulse {
  0%, 100% { box-shadow: 0 8px 32px rgba(51, 144, 236, 0.35); }
  50%       { box-shadow: 0 8px 48px rgba(51, 144, 236, 0.6); }
}

.auth-logo h1 {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: -0.4px;
  margin-bottom: 6px;
}

.auth-logo p {
  color: var(--text2);
  font-size: 15px;
}

.auth-card {
  background: var(--surface);
  border-radius: 20px;
  padding: 28px 28px 24px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.04);
}

.tab-switcher {
  display: flex;
  background: var(--bg);
  border-radius: 12px;
  padding: 4px;
  margin-bottom: 24px;
  gap: 4px;
}

.tab-btn {
  flex: 1;
  padding: 10px 8px;
  border: none;
  background: transparent;
  color: var(--text2);
  border-radius: 9px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  transition: background 0.22s, color 0.22s, box-shadow 0.22s;
  font-family: inherit;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.tab-btn.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 2px 10px rgba(51, 144, 236, 0.45);
}

.form-group { margin-bottom: 16px; }

.form-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  color: var(--text2);
  margin-bottom: 7px;
  text-transform: uppercase;
  letter-spacing: 0.7px;
}

.input-wrap { position: relative; }

.form-input {
  width: 100%;
  padding: 13px 42px 13px 16px;
  background: var(--input-bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 16px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
  font-family: inherit;
  -webkit-appearance: none;
  appearance: none;
}

.form-input:not(.input-wrap .form-input) {
  padding: 13px 16px;
}

.form-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(51, 144, 236, 0.2);
}

.form-input::placeholder { color: #3a4f66; }

.eye-btn {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  color: var(--text2);
  padding: 4px;
  display: flex;
  align-items: center;
  transition: color 0.2s;
}

.eye-btn:hover { color: var(--text); }
.eye-icon { width: 18px; height: 18px; }

.submit-btn {
  width: 100%;
  padding: 14px;
  background: var(--primary-grad);
  border: none;
  border-radius: var(--radius);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s, transform 0.15s;
  margin-top: 8px;
  font-family: inherit;
  letter-spacing: 0.3px;
  position: relative;
  overflow: hidden;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

.submit-btn:hover { opacity: 0.9; }
.submit-btn:active { transform: scale(0.98); }

.submit-btn.loading {
  pointer-events: none;
  opacity: 0.7;
}

.submit-btn.loading::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.18), transparent);
  animation: shimmer 1.1s infinite;
}

@keyframes shimmer {
  0%   { transform: translateX(-100%); }
  100% { transform: translateX(100%);  }
}

.error-msg {
  color: var(--error);
  font-size: 13px;
  text-align: center;
  margin-top: 12px;
  min-height: 18px;
  opacity: 0;
  transition: opacity 0.2s;
}
.error-msg.show { opacity: 1; }

@media (max-width: 420px) {
  .auth-card { padding: 22px 18px 20px; border-radius: 16px; }
  .auth-wrap { padding: 16px 12px; }
  .logo-circle { width: 76px; height: 76px; border-radius: 22px; }
  .auth-logo h1 { font-size: 26px; }
}

@media (max-height: 640px) {
  .auth-logo { margin-bottom: 20px; }
  .logo-circle { width: 64px; height: 64px; margin-bottom: 12px; border-radius: 18px; }
  .auth-logo h1 { font-size: 22px; }
  .auth-logo p { display: none; }
  .auth-card { padding: 18px 20px 16px; }
  .form-group { margin-bottom: 12px; }
  .form-input { padding: 11px 40px 11px 14px; }
  .submit-btn { padding: 12px; margin-top: 4px; }
  .tab-btn { padding: 8px 6px; }
}

@media (max-height: 480px) {
  .auth-logo { margin-bottom: 12px; }
  .logo-circle { display: none; }
  .auth-logo p { display: none; }
  .auth-logo h1 { font-size: 20px; }
  .auth-card { padding: 14px 16px 12px; }
  .form-group { margin-bottom: 10px; }
}