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

body {
  font-family: 'Roboto', sans-serif;
  margin: 0;
  min-height: 100vh;
  background: linear-gradient(145deg, #00868b 0%, #004f52 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ── Loading screen ─────────────────────────────────────────── */
#loading-screen {
  position: fixed;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 20px;
  background: linear-gradient(145deg, #00868b 0%, #004f52 100%);
  z-index: 9999;
}

.loading-logo {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.2rem;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.loading-spinner {
  width: 36px;
  height: 36px;
  border: 3px solid rgba(255, 255, 255, 0.25);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loading-text {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.04em;
  margin: 0;
}

/* ── Page shell ─────────────────────────────────────────────── */
.login-page {
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

/* ── Card ───────────────────────────────────────────────────── */
.login-card {
  background: #fff;
  border-radius: 20px;
  padding: 48px 40px 36px;
  width: 100%;
  max-width: 420px;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.25);
}

@media (max-width: 480px) {
  .login-card { padding: 36px 24px 28px; }
}

/* ── Branding ───────────────────────────────────────────────── */
.login-brand {
  text-align: center;
  margin-bottom: 36px;
}

.login-logo {
  width: 70px;
  height: 70px;
  border-radius: 50%;
  background: linear-gradient(135deg, #00868b, #00a89e);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.9rem;
  margin: 0 auto 18px;
  box-shadow: 0 6px 20px rgba(0, 134, 139, 0.4);
}

.login-title {
  font-size: 1.35rem;
  font-weight: 600;
  color: #111b21;
  margin: 0 0 6px;
}

.login-subtitle {
  font-size: 0.88rem;
  color: #8696a0;
  margin: 0;
}

/* ── Error banner ───────────────────────────────────────────── */
.login-error {
  display: none;
  background: #fff0f0;
  color: #c62828;
  border-left: 3px solid #e53935;
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 13px;
  margin-bottom: 18px;
}

/* ── Form fields ────────────────────────────────────────────── */
.login-field {
  margin-bottom: 22px;
}

.login-field label {
  display: block;
  font-size: 11.5px;
  font-weight: 600;
  color: #54656f;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 7px;
}

.login-input-wrapper {
  position: relative;
}

.login-input-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: #b0bec5;
  font-size: 13px;
  pointer-events: none;
  transition: color 0.2s;
}

.login-input {
  width: 100%;
  border: 1.5px solid #e5e8eb !important;
  border-radius: 10px !important;
  padding: 12px 14px 12px 42px !important;
  font-size: 15px !important;
  color: #111b21 !important;
  background: #f8fafb !important;
  outline: none !important;
  box-shadow: none !important;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
  caret-color: #00868b;
}

.login-input:focus {
  border-color: #00868b !important;
  background: #fff !important;
  box-shadow: 0 0 0 3px rgba(0, 134, 139, 0.12) !important;
}

.login-input-wrapper:focus-within .login-input-icon {
  color: #00868b;
}

.login-hint {
  display: block;
  font-size: 11.5px;
  color: #8696a0;
  margin-top: 6px;
  line-height: 1.5;
}

.login-hint a {
  color: #00868b !important;
  text-decoration: underline !important;
}
.login-hint a:hover { color: #006f73 !important; }

/* OTP warning banner */
.login-otp-warning {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  background: #fff3cd;
  border: 1.5px solid #f59e0b;
  border-left: 4px solid #f59e0b;
  border-radius: 10px;
  padding: 12px 14px;
  margin-bottom: 16px;
  font-size: 12.5px;
  color: #7c4f00;
  line-height: 1.55;
}

.login-otp-warning-icon {
  color: #f59e0b;
  font-size: 15px;
  margin-top: 1px;
  flex-shrink: 0;
}

.login-otp-warning a {
  color: #b45309 !important;
  text-decoration: underline !important;
  font-weight: 500;
}
.login-otp-warning a:hover { color: #92400e !important; }

/* ── Actions ────────────────────────────────────────────────── */
.login-actions {
  margin-top: 30px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
}

.login-btn {
  width: 100%;
  padding: 13px;
  background: #00868b;
  color: #fff;
  border: none;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s, box-shadow 0.2s, transform 0.1s;
  letter-spacing: 0.01em;
}

.login-btn:hover {
  background: #006f73;
  box-shadow: 0 6px 18px rgba(0, 134, 139, 0.38);
}

.login-btn:active {
  transform: scale(0.98);
}

.login-restart {
  font-size: 13px;
  color: #8696a0 !important;
  text-decoration: none !important;
  cursor: pointer;
  transition: color 0.15s;
  display: flex;
  align-items: center;
  gap: 5px;
}

.login-restart:hover { color: #00868b !important; }

/* ── Footer ─────────────────────────────────────────────────── */
.login-footer {
  margin-top: 36px;
  padding-top: 24px;
  border-top: 1px solid #f0f2f5;
  text-align: center;
}

.login-footer p {
  font-size: 12.5px;
  color: #8696a0;
  margin: 0 0 10px;
}

.login-github-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
}

.login-github-sep {
  color: #c5cdd2;
  font-size: 14px;
  line-height: 1;
}

.login-github-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
  font-weight: 500;
  color: #111b21 !important;
  background: #f0f2f5;
  border-radius: 20px;
  padding: 6px 14px;
  text-decoration: none !important;
  transition: background 0.15s, color 0.15s;
}

.login-github-link:hover {
  background: #00868b;
  color: #fff !important;
}