:root {
  --primary: #FF6B8B;
  --primary-light: #FF8E9E;
  --primary-dark: #FF4A6E;
  --secondary: #4ECDC4;
  --accent: #FFD166;
  --light: #FFFFFF;
  --dark: #0a0a1a;
  --darker: #050510;
  --glass: rgba(255, 255, 255, 0.12);
  --glass-border: rgba(255, 255, 255, 0.25);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --radius: 18px;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
  min-height: 100vh;
  background: linear-gradient(135deg, 
    #0a0a1a 0%, 
    #1a1a2e 50%, 
    #16213e 100%);
  color: var(--light);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  overflow-x: hidden;
  position: relative;
}

.bg-elements {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
}

.bg-elements div {
  position: absolute;
  border-radius: 50%;
  opacity: 0.05;
}

.bg-elements div:nth-child(1) {
  width: 300px;
  height: 300px;
  top: 10%;
  left: 5%;
  background: var(--primary);
}

.bg-elements div:nth-child(2) {
  width: 200px;
  height: 200px;
  top: 60%;
  left: 80%;
  background: var(--secondary);
}

.bg-elements div:nth-child(3) {
  width: 150px;
  height: 150px;
  top: 80%;
  left: 10%;
  background: var(--accent);
}

.bg-elements div:nth-child(4) {
  width: 250px;
  height: 250px;
  top: 20%;
  left: 70%;
  background: var(--primary);
}


.container {
  width: 100%;
  max-width: 480px;
  z-index: 1;
  margin-top: -40px; 
}

.card-ui {
  background: rgba(10, 10, 26, 0.85);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 28px 24px; 
  box-shadow: var(--shadow), 
              0 0 50px rgba(255, 107, 139, 0.15),
              inset 0 1px 0 rgba(255, 255, 255, 0.1);
  position: relative;
  overflow: hidden;
  transition: var(--transition);
}

.card-ui::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, 
    var(--primary), 
    var(--accent),
    var(--secondary));
  z-index: 2;
}

.card-ui:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.25),
              0 0 60px rgba(255, 107, 139, 0.2);
}

.header {
  text-align: center;
  margin-bottom: 24px; 
}

.brand-name {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 28px;
  font-weight: 800;
  color: var(--light);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3),
               0 0 20px rgba(255, 107, 139, 0.3);
}

.brand-name i {
  color: #FF0000;
  font-size: 32px;
  filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.3));
}


.search-box {
  position: relative;
  margin-bottom: 16px;
}

.search-icon {
  position: absolute;
  top: 50%;
  left: 20px;
  transform: translateY(-50%);
  color: var(--primary);
  font-size: 22px;
  z-index: 1;
}

.search-box input {
  width: 100%;
  height: 58px;
  padding: 0 60px 0 58px;
  border-radius: 14px;
  border: 2px solid rgba(255, 255, 255, 0.15);
  background: rgba(255, 255, 255, 0.08);
  color: var(--light);
  font-size: 16px;
  font-weight: 500;
  transition: var(--transition);
}

.search-box input:focus {
  outline: none;
  border-color: var(--primary);
  background: rgba(255, 255, 255, 0.12);
  box-shadow: 0 0 0 3px rgba(255, 107, 139, 0.2);
}

.search-box input::placeholder {
  color: rgba(255, 255, 255, 0.6);
}


.btn-search {
  width: 50%; 
  height: 58px; 
  border-radius: 14px;
  border: none;
  font-weight: 700;
  font-size: 17px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  margin: 0 auto 24px auto; 
  cursor: pointer;
  color: var(--light);
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  position: relative;
  overflow: hidden;
  transition: var(--transition);
  box-shadow: 0 6px 20px rgba(255, 107, 139, 0.4);
}

.btn-search:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 25px rgba(255, 107, 139, 0.6);
  background: linear-gradient(135deg, var(--primary-light), var(--primary));
}

.btn-search:active {
  transform: translateY(0);
}

.btn-search i {
  font-size: 20px;
}


.mode-selector {
  display: flex;
  justify-content: space-between;
  margin-bottom: 24px;
  gap: 12px;
}

.mode-btn {
  flex: 1;
  height: 50px;
  border: 2px solid rgba(255, 255, 255, 0.15);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.08);
  color: rgba(255, 255, 255, 0.8);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: var(--transition);
}

.mode-btn i {
  font-size: 18px;
}

.mode-btn:hover {
  background: rgba(255, 107, 139, 0.15);
  border-color: rgba(255, 107, 139, 0.3);
  color: var(--light);
  transform: translateY(-2px);
}

.mode-btn.active {
  background: linear-gradient(135deg, var(--primary), var(--primary-dark));
  border-color: transparent;
  color: var(--light);
  box-shadow: 0 5px 15px rgba(255, 107, 139, 0.3);
}


.status-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  margin-bottom: 18px; 
  font-size: 14px;
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--secondary);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { 
    opacity: 1;
    transform: scale(1);
  }
  50% { 
    opacity: 0.6;
    transform: scale(1.1);
  }
}

.footer-text {
  text-align: center;
  font-size: 14px;
  color: rgba(255, 255, 255, 0.7);
  padding-top: 16px; /* Reduced */
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}


.popup-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.popup-box {
  background: var(--dark);
  padding: 30px;
  border-radius: var(--radius);
  width: 90%;
  max-width: 400px;
  text-align: center;
  position: relative;
  border: 1px solid var(--glass-border);
  box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
  animation: popupSlide 0.3s ease-out;
}

@keyframes popupSlide {
  from {
    transform: translateY(20px);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.popup-close {
  position: absolute;
  top: 15px;
  right: 15px;
  border: none;
  background: rgba(255, 255, 255, 0.1);
  color: var(--light);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  font-size: 18px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.popup-close:hover {
  background: var(--primary);
  transform: rotate(90deg);
}

.popup-box h3 {
  color: var(--primary);
  margin-bottom: 15px;
}

.popup-box p {
  font-size: 16px;
  line-height: 1.6;
  color: rgba(255, 255, 255, 0.9);
  margin-top: 10px;
}


@media (max-width: 500px) {
  .container {
    margin-top: -20px; /* Adjusted for mobile */
  }
  
  .card-ui {
    padding: 24px 20px; /* Further reduced for mobile */
  }
  
  .brand-name {
    font-size: 24px;
  }
  
  .brand-name i {
    font-size: 28px;
  }
  
  .search-box input {
    height: 54px;
    padding: 0 56px 0 54px;
    font-size: 15px;
  }
  
  .btn-search {
    width: 80%;
    height: 54px; 
    font-size: 16px;
  }
  
  .btn-search i {
    font-size: 18px;
  }
  
  .mode-btn {
    height: 46px;
    font-size: 14px;
    gap: 6px;
  }
  
  .mode-btn i {
    font-size: 16px;
  }
}

@media (max-width: 380px) {
  .btn-search {
    width: 85%; 
  }
  
  .mode-btn {
    font-size: 13px;
    padding: 0 4px;
  }
}