* {margin: 0; padding: 0; box-sizing: border-box;}
body {font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif; background: linear-gradient(135deg, #f8f8f8 0%, #ffffff 100%); min-height: 100vh; overflow-x: hidden;}
.logo-img {width: 100px; height: auto; margin-bottom: 20px;}
.login-container {display: flex; justify-content: center; align-items: center; min-height: 100vh; background: linear-gradient(135deg, #f8f8f8 0%, #ffffff 100%);}
.login-card {background: white; padding: 3rem; border-radius: 20px; box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1); width: 100%; max-width: 400px; text-align: center; transform: translateY(0); transition: all 0.3s ease;}
.logo {font-size: 2.5rem; font-weight: bold; text-align: center; margin-bottom: 2px; color: #c0392b; -webkit-background-clip: text; background-clip: text; text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2); letter-spacing: 2px; position: relative; display: inline-block;}
.subtitle {color: #666; margin-bottom: 2rem; font-size: 1.1rem;}
.form-group {margin-bottom: 1.5rem; text-align: left;}
.form-group label {display: block; margin-bottom: 0.5rem; color: #333; font-weight: 500;}
.form-group input {width: 100%; padding: 12px 16px; border: 2px solid #e1e5e9; border-radius: 8px; font-size: 1rem; transition: border-color 0.3s ease;}
.form-group input:focus {outline: none; border-color: #ea6666;}
.login-btn {width: 100%; padding: 12px; background: #c0392b; color: white; border: none; border-radius: 8px; font-size: 1.1rem; font-weight: 600; cursor: pointer; transition: all 0.3s ease;}
.login-btn:hover {transform: translateY(-2px); box-shadow: 0 5px 15px rgba(102, 126, 234, 0.4);}
.modal {display: none; position: fixed; z-index: 1000; left: 0; top: 0; width: 100%; height: 100%; background-color: rgba(0, 0, 0, 0.5); overflow: auto;}
.modal-content {background-color: #fefefe; margin: 10% auto; padding: 20px; border: 1px solid #888; width: 50%; max-width: 600px; border-radius: 5px; box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);}
.modal-header {display: flex; justify-content: space-between; align-items: center; border-bottom: 1px solid #ddd; padding-bottom: 10px; margin-bottom: 15px;}
.modal-header h3 {margin: 0; color: #333;}
.close-modal {color: #aaa; font-size: 28px; font-weight: bold; cursor: pointer;}
.close-modal:hover {color: black;}
.modal-body {margin-bottom: 20px;}
.modal-footer {display: flex; justify-content: flex-end; border-top: 1px solid #ddd; padding-top: 15px;}
.modal-footer button {margin-left: 10px; padding: 8px 15px; border: none; border-radius: 4px; cursor: pointer; font-size: 1em;}