/* ===== KEYFRAME ANIMATIONS ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(245, 196, 83, 0.4); }
  50% { box-shadow: 0 0 0 15px rgba(245, 196, 83, 0); }
}

@keyframes shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

@keyframes gradientBG {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

@keyframes inputGlow {
  0%, 100% { box-shadow: 0 0 5px rgba(245, 196, 83, 0.2); }
  50% { box-shadow: 0 0 20px rgba(245, 196, 83, 0.4); }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
  20%, 40%, 60%, 80% { transform: translateX(5px); }
}

/* ===== BASE STYLES ===== */
*{box-sizing:border-box}
html,body{height:100%;margin:0}
body{
  font-family: 'Poppins', Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background: linear-gradient(-45deg, #1a1a2e, #16213e, #0f3460, #1a1a2e);
  background-size: 400% 400%;
  animation: gradientBG 15s ease infinite;
  color: #1f2937;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  display:flex;
  align-items:center;
  justify-content:center;
  padding:32px;
  min-height: 100vh;
  position: relative;
  overflow: hidden;
}

/* Floating particles background */
body::before,
body::after {
  content: '';
  position: absolute;
  border-radius: 50%;
  opacity: 0.1;
  animation: float 6s ease-in-out infinite;
}

body::before {
  width: 300px;
  height: 300px;
  background: linear-gradient(135deg, #f5c453, #ff6b6b);
  top: -100px;
  left: -100px;
  animation-delay: 0s;
}

body::after {
  width: 200px;
  height: 200px;
  background: linear-gradient(135deg, #4ecdc4, #44a08d);
  bottom: -50px;
  right: -50px;
  animation-delay: 3s;
}

/* ===== LOGIN CONTAINER ===== */
.login-container{
  width:400px;
  max-width:94%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: 24px;
  padding: 40px 35px;
  box-shadow: 
    0 25px 50px rgba(0, 0, 0, 0.25),
    0 0 0 1px rgba(255, 255, 255, 0.1),
    inset 0 1px 0 rgba(255, 255, 255, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.2);
  animation: fadeInUp 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
  position: relative;
  z-index: 10;
  overflow: hidden;
}

.login-container::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.4),
    transparent
  );
  transition: 0.5s;
  pointer-events: none;
}

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

/* ===== TITLE ===== */
.login-title{
  margin: 0 0 8px 0;
  font-size: 32px;
  text-align: center;
  background: linear-gradient(135deg, #f5c453, #ff6b6b, #f5c453);
  background-size: 200% auto;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: shimmer 3s linear infinite;
  letter-spacing: 1px;
  font-weight: 700;
  text-transform: uppercase;
}

.login-title::after {
  content: '🍔';
  display: block;
  font-size: 40px;
  margin-top: 10px;
  animation: float 3s ease-in-out infinite;
}

/* ===== FORM STYLES ===== */
.login-form{
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: 25px;
}

.form-label{
  font-size: 14px;
  color: #444;
  margin-bottom: 8px;
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: color 0.3s ease;
}

.form-label::before {
  content: '✦';
  color: #f5c453;
  font-size: 10px;
  animation: pulse 2s infinite;
}

.form-input{
  width: 100%;
  padding: 16px 20px;
  border-radius: 14px;
  border: 2px solid #e6e9ef;
  background: linear-gradient(145deg, #ffffff, #f5f5f5);
  color: #111827;
  outline: none;
  font-size: 15px;
  font-weight: 500;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.form-input::placeholder{
  color: #aaa;
  font-weight: 400;
}

.form-input:focus{
  border-color: #f5c453;
  background: #fff;
  box-shadow: 
    0 10px 40px rgba(245, 196, 83, 0.2),
    0 0 0 4px rgba(245, 196, 83, 0.1);
  transform: translateY(-3px) scale(1.02);
  animation: inputGlow 2s ease-in-out infinite;
}

.form-input:hover:not(:focus) {
  border-color: #ddd;
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

/* ===== LOGIN BUTTON ===== */
.login-button{
  display: inline-block;
  width: 100%;
  padding: 16px 24px;
  border-radius: 14px;
  border: none;
  background: linear-gradient(135deg, #d5402b, #ff6b6b, #d5402b);
  background-size: 200% auto;
  color: #fff;
  font-weight: 700;
  font-size: 16px;
  cursor: pointer;
  text-transform: uppercase;
  letter-spacing: 2px;
  box-shadow: 
    0 10px 30px rgba(213, 64, 43, 0.3),
    inset 0 1px 0 rgba(255, 255, 255, 0.2);
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  position: relative;
  overflow: hidden;
  margin-top: 10px;
}

.login-button::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.3),
    transparent
  );
  transition: 0.5s;
}

.login-button:hover {
  transform: translateY(-4px) scale(1.02);
  box-shadow: 
    0 20px 50px rgba(213, 64, 43, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.3);
  background-position: right center;
}

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

.login-button:active {
  transform: translateY(-1px) scale(0.98);
  box-shadow: 0 5px 20px rgba(213, 64, 43, 0.3);
}

/* ===== LINKS ===== */
.login-footer{display:flex;justify-content:center;margin-top:12px}

.login-container div {
  text-align: center;
  margin-top: 20px;
}

.login-container a{
  display: inline-block;
  color: #f5c453;
  text-decoration: none;
  font-size: 15px;
  font-weight: 600;
  padding: 10px 20px;
  border-radius: 10px;
  transition: all 0.3s ease;
  position: relative;
  background: linear-gradient(135deg, transparent, rgba(245, 196, 83, 0.1));
}

.login-container a::after {
  content: ' →';
  opacity: 0;
  transform: translateX(-10px);
  transition: all 0.3s ease;
  display: inline-block;
}

.login-container a:hover {
  color: #d5402b;
  background: rgba(245, 196, 83, 0.15);
  transform: translateX(5px);
}

.login-container a:hover::after {
  opacity: 1;
  transform: translateX(0);
}

/* ===== RESPONSIVE ===== */

/* Tablet Styles */
@media (max-width: 768px) {
  body {
    padding: 20px 15px;
  }
  
  .login-container {
    padding: 35px 28px;
    border-radius: 24px;
    margin: 10px;
  }
  
  .login-title {
    font-size: 28px;
  }
  
  .form-input {
    padding: 15px 18px;
    font-size: 16px; /* Prevents iOS zoom */
  }
  
  .login-button {
    padding: 16px 24px;
    font-size: 16px;
  }
  
  .back-home {
    top: 12px;
    left: 12px;
    padding: 10px 18px;
    font-size: 14px;
  }
}

/* Mobile Styles */
@media (max-width: 480px) {
  body {
    padding: 15px 10px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  .login-container {
    padding: 28px 22px;
    border-radius: 20px;
    margin: 5px;
    width: 100%;
    max-width: 350px;
  }
  
  .login-title {
    font-size: 24px;
    margin-bottom: 24px;
  }
  
  .login-title::after {
    font-size: 20px;
    top: -15px;
    right: -30px;
  }
  
  .form-label {
    font-size: 13px;
    margin-bottom: 6px;
  }
  
  .form-input {
    padding: 14px 16px;
    font-size: 16px;
    border-radius: 12px;
  }
  
  .login-button {
    padding: 14px 20px;
    font-size: 15px;
    border-radius: 14px;
    margin-top: 8px;
  }
  
  .links-container {
    margin-top: 20px;
    padding-top: 16px;
  }
  
  .links-container a {
    padding: 10px 16px;
    font-size: 14px;
    margin: 8px 0;
  }
  
  .back-home {
    position: absolute;
    top: 10px;
    left: 10px;
    padding: 8px 14px;
    font-size: 13px;
    border-radius: 30px;
  }
}

/* Very Small Screens */
@media (max-width: 360px) {
  .login-container {
    padding: 24px 18px;
  }
  
  .login-title {
    font-size: 22px;
  }
  
  .form-input {
    padding: 12px 14px;
  }
  
  .login-button {
    padding: 13px 18px;
    font-size: 14px;
  }
}

/* Touch-friendly */
@media (hover: none) and (pointer: coarse) {
  .login-button:active {
    transform: scale(0.97);
    box-shadow: 0 5px 15px rgba(213, 64, 43, 0.3);
  }
  
  .form-input:focus {
    transform: none;
  }
  
  .links-container a:active {
    background: rgba(102, 126, 234, 0.3);
  }
}

/* Safe area for notched devices */
@supports (padding: max(0px)) {
  body {
    padding-left: max(15px, env(safe-area-inset-left));
    padding-right: max(15px, env(safe-area-inset-right));
    padding-bottom: max(15px, env(safe-area-inset-bottom));
  }
}

/* ===== EXTRA DECORATIONS ===== */
.login-container > div:last-child::before {
  content: '';
  display: block;
  width: 60%;
  height: 1px;
  background: linear-gradient(90deg, transparent, #f5c453, transparent);
  margin: 15px auto;
}