:root {
      --primary-color: #ff4081;
      --secondary-color: #7c4dff;
      --accent-color: #ffffff;
      --bg-gradient-start: #141e30;
      --bg-gradient-end: #243b55;
      --glass-bg: rgba(255, 255, 255, 0.1);
      --glass-border: rgba(255, 255, 255, 0.2);
      --font-family: 'Montserrat', sans-serif;
      --border-radius: 15px;
      --transition-speed: 0.3s;
    }
    * { margin: 0; padding: 0; box-sizing: border-box; }
    body {
      font-family: var(--font-family);
      background: linear-gradient(270deg, var(--bg-gradient-start), var(--bg-gradient-end));
      background-size: 400% 400%;
      animation: gradientShift 15s ease infinite;
      color: var(--accent-color);
      display: flex;
      justify-content: center;
      align-items: center;
      min-height: 100vh;
      overflow-x: hidden;
    }
    @keyframes gradientShift {
      0% { background-position: 0% 50%; }
      50% { background-position: 100% 50%; }
      100% { background-position: 0% 50%; }
    }
    .container {
      position: relative;
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: var(--border-radius);
      padding: 2rem 2.5rem;
      max-width: 950px;
      width: 100%;
      box-shadow: 0 15px 40px rgba(0,0,0,0.8);
      backdrop-filter: blur(12px);
      overflow: hidden;
      animation: fadeInUp 0.8s ease-out forwards;
    }
    @keyframes fadeInUp {
      from { opacity: 0; transform: translateY(30px); }
      to { opacity: 1; transform: translateY(0); }
    }
    .container::before {
      content: "";
      position: absolute;
      top: -50%;
      left: -50%;
      width: 200%;
      height: 200%;
      background: conic-gradient(from 0deg, rgba(255,64,129,0.2), rgba(124,77,255,0.2), rgba(255,64,129,0.2));
      animation: spin 20s linear infinite;
      z-index: -1;
    }
    @keyframes spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
    h2 {
      text-align: center;
      margin-bottom: 1.5rem;
      font-size: 2.5rem;
      color: var(--primary-color);
      text-shadow: 0 2px 10px rgba(255,64,129,0.6);
      animation: popIn 0.6s ease-out forwards;
    }
    @keyframes popIn { 0% { transform: scale(0.8); opacity: 0; } 100% { transform: scale(1); opacity: 1; } }
    h2 i { color: var(--secondary-color); margin-right: 0.5rem; }
    .form-group {
      margin-bottom: 1.5rem;
      animation: fadeIn 0.6s ease-out forwards;
    }
    @keyframes fadeIn { from { opacity: 0; transform: translateX(-20px); } to { opacity: 1; transform: translateX(0); } }
    label {
      display: block;
      margin-bottom: 0.5rem;
      font-weight: 500;
      text-shadow: 0 1px 3px rgba(0,0,0,0.3);
    }
    label i { margin-right: 0.3rem; color: var(--secondary-color); }
    
    input, select {
      background: rgba(255, 255, 255, 0.1);  
      color: var(--accent-color);
      border: 1px solid var(--glass-border);
    }

    select option {
      background: var(--bg-gradient-start);  
      color: white; 
    }

    input, select, button {
      width: 100%;
      padding: 1rem;
      font-size: 1rem;
      border: 1px solid var(--glass-border);
      border-radius: var(--border-radius);
      background: transparent;
      color: var(--accent-color);
      transition: all var(--transition-speed) ease;
    }
    input:focus, select:focus { outline: none; border-color: var(--primary-color); box-shadow: 0 0 10px var(--primary-color); }
    button {
      background: var(--primary-color);
      border: none;
      cursor: pointer;
      font-weight: 600;
      margin-top: 1rem;
      overflow: hidden;
      position: relative;
    }
    button:hover { background: var(--secondary-color); }
    button .ripple {
      position: absolute;
      border-radius: 50%;
      transform: scale(0);
      animation: rippleEffect 0.6s linear;
      background: rgba(255,255,255,0.7);
    }
    @keyframes rippleEffect { to { transform: scale(4); opacity: 0; } }
    .help-text { font-size: 0.85rem; color: rgba(255,255,255,0.7); margin-top: 0.5rem; }
    .custom-multi-select {
      border: 1px solid var(--glass-border);
      border-radius: var(--border-radius);
      background: transparent;
      padding: 0.5rem;
      max-height: 180px;
      overflow-y: auto;
      display: flex;
      flex-wrap: wrap;
      gap: 0.5rem;
    }
    .custom-multi-select .custom-option {
      flex: 1 1 calc(33% - 0.5rem);
      background: rgba(255,255,255,0.05);
      padding: 0.8rem;
      border-radius: var(--border-radius);
      text-align: center;
      cursor: pointer;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: transform var(--transition-speed) ease, background var(--transition-speed) ease;
      position: relative;
    }
    .custom-multi-select .custom-option:hover {
      transform: translateY(-4px);
      background: rgba(255,64,129,0.15);
    }
    .custom-multi-select .custom-option.selected {
      background: rgba(255,64,129,0.35);
      box-shadow: 0 4px 12px rgba(255,64,129,0.5);
    }
    .custom-multi-select .custom-option .circle {
      width: 20px;
      height: 20px;
      border: 2px solid var(--glass-border);
      border-radius: 50%;
      margin-right: 0.5rem;
      flex-shrink: 0;
      transition: background var(--transition-speed) ease;
    }
    .custom-multi-select .custom-option.selected .circle {
      background: var(--primary-color);
      border-color: var(--primary-color);
    }
    .day-btn.saved .circle { background: var(--primary-color); }
    .sub-select { margin-top: 0.5rem; margin-left: 1.5rem; transition: opacity var(--transition-speed) ease; }
    .other-input-container {
      display: flex;
      align-items: center;
      gap: 0.3rem;  
    }
    .other-input {
      flex-grow: 1;  
    }
    .other-input-container button {
      padding: 0.5rem 0.8rem; 
      font-size: 0.9rem;  
      height: 38px;  
    }
    .other-input-container button:hover { background: var(--secondary-color); }
    #loadingOverlay {
      position: fixed;
      top: 0; left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0,0,0,0.85);
      z-index: 9999;
      display: none;
      align-items: center;
      justify-content: center;
      flex-direction: column;
      color: var(--accent-color);
      font-size: 1.2rem;
    }
    #loadingOverlay i { font-size: 3rem; margin-bottom: 1rem; animation: spin 1s linear infinite; }