* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

body {
  background: linear-gradient(135deg, #0a1128 0%, #1e3a8a 50%, #2563eb 100%);
  min-height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  overflow: hidden;
}

/* ========== Background Animated Shapes ========== */
body::before {
  content: '';
  position: absolute;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(255,255,255,0.1), transparent);
  border-radius: 50%;
  top: -150px;
  left: -150px;
  animation: float 20s infinite ease-in-out;
}

body::after {
  content: '';
  position: absolute;
  width: 300px;
  height: 300px;
  background: radial-gradient(circle, rgba(255,255,255,0.08), transparent);
  border-radius: 50%;
  bottom: -100px;
  right: -100px;
  animation: float 25s infinite ease-in-out reverse;
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(30px, -30px) scale(1.1); }
}

/* ========== Login Container ========== */
.login-container {
  background: white;
  padding: 50px 45px;
  border-radius: 20px;
  box-shadow: 0 30px 80px rgba(0,0,0,0.5);
  width: 420px;
  max-width: 90%;
  text-align: center;
  position: relative;
  z-index: 10;
  animation: slideUp 0.6s ease-in-out;
  backdrop-filter: blur(10px);
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ========== Header/Title ========== */
.login-container h2 {
  margin-bottom: 30px;
  color: #0a1128;
  font-size: 32px;
  font-weight: 800;
  letter-spacing: -0.5px;
  position: relative;
  padding-bottom: 15px;
}

.login-container h2::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 4px;
  background: linear-gradient(90deg, #1e3a8a, #2563eb);
  border-radius: 2px;
}

/* ========== Language Selector ========== */
.lang-selector-login {
  margin-bottom: 25px;
}

.lang-selector-login select {
  width: 100%;
  padding: 12px 16px;
  border: 2px solid #e5e7eb;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  color: #1e293b;
  background: #f9fafb;
  cursor: pointer;
  transition: all 0.3s ease;
  outline: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%231e3a8a' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 16px center;
  padding-right: 40px;
}

.lang-selector-login select:hover {
  border-color: #1e3a8a;
  background-color: white;
  box-shadow: 0 4px 12px rgba(30, 58, 138, 0.1);
}

.lang-selector-login select:focus {
  border-color: #1e3a8a;
  background-color: white;
  box-shadow: 0 0 0 4px rgba(30, 58, 138, 0.1);
}

/* ========== Input Fields ========== */
.login-container input {
  width: 100%;
  padding: 16px 18px;
  margin: 12px 0;
  border: 2px solid #e5e7eb;
  border-radius: 12px;
  font-size: 15px;
  transition: all 0.3s ease;
  background: #f9fafb;
  color: #1e293b;
  font-weight: 500;
}

.login-container input::placeholder {
  color: #94a3b8;
  font-weight: 400;
}

.login-container input:focus {
  border-color: #1e3a8a;
  outline: none;
  background: white;
  box-shadow: 0 0 0 4px rgba(30, 58, 138, 0.1);
  transform: translateY(-2px);
}

.login-container input:hover {
  border-color: #cbd5e1;
  background: white;
}

/* ========== Login Button ========== */
.login-container button {
  width: 100%;
  padding: 16px;
  background: linear-gradient(135deg, #0a1128 0%, #1e3a8a 100%);
  color: white;
  border: none;
  border-radius: 12px;
  font-size: 17px;
  font-weight: 700;
  cursor: pointer;
  margin-top: 20px;
  transition: all 0.3s ease;
  box-shadow: 0 8px 20px rgba(10, 17, 40, 0.35);
  letter-spacing: 0.3px;
  text-transform: uppercase;
  position: relative;
  overflow: hidden;
}

.login-container button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
  transition: left 0.5s;
}

.login-container button:hover::before {
  left: 100%;
}

.login-container button:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(10, 17, 40, 0.45);
  background: linear-gradient(135deg, #1e3a8a 0%, #2563eb 100%);
}

.login-container button:active {
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(10, 17, 40, 0.4);
}

/* ========== Error Message ========== */
#error {
  color: #dc2626;
  margin-top: 18px;
  font-size: 14px;
  min-height: 20px;
  font-weight: 700;
  padding: 14px;
  background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
  border-radius: 10px;
  border-left: 4px solid #dc2626;
  display: none;
  animation: shake 0.5s ease;
  box-shadow: 0 4px 12px rgba(220, 38, 38, 0.15);
}

#error:not(:empty) {
  display: block;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-8px); }
  20%, 40%, 60%, 80% { transform: translateX(8px); }
}

/* ========== Responsive Design ========== */
@media (max-width: 480px) {
  .login-container {
    padding: 40px 30px;
    width: 95%;
    border-radius: 16px;
  }

  .login-container h2 {
    font-size: 26px;
    margin-bottom: 25px;
  }

  .login-container input {
    padding: 14px 16px;
    font-size: 14px;
  }

  .login-container button {
    padding: 14px;
    font-size: 15px;
  }

  .lang-selector-login select {
    padding: 11px 14px;
    font-size: 14px;
  }
}

@media (max-width: 360px) {
  .login-container {
    padding: 35px 25px;
  }

  .login-container h2 {
    font-size: 24px;
  }
}

/* ========== Additional Enhancements ========== */

/* Focus ring for accessibility */
.login-container input:focus-visible,
.login-container button:focus-visible,
.lang-selector-login select:focus-visible {
  outline: 3px solid #1e3a8a;
  outline-offset: 2px;
}

/* Disabled state */
.login-container button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

.login-container button:disabled:hover {
  transform: none;
  box-shadow: 0 8px 20px rgba(10, 17, 40, 0.35);
}

/* Loading animation (optional) */
.login-container button.loading {
  pointer-events: none;
  position: relative;
  color: transparent;
}

.login-container button.loading::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  top: 50%;
  left: 50%;
  margin-left: -10px;
  margin-top: -10px;
  border: 3px solid rgba(255,255,255,0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

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

/* Smooth transitions for all interactive elements */
* {
  transition-property: background-color, border-color, color, fill, stroke, opacity, box-shadow, transform;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
}

input, button, select {
  transition-duration: 300ms;
}

/* Print styles */
@media print {
  body::before,
  body::after {
    display: none;
  }
  
  .login-container {
    box-shadow: none;
    border: 1px solid #e5e7eb;
  }
}