* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    width: 100%;
    max-width: 900px;
    padding: 20px;
}

.login-form, .home-page {
    background: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

h2 {
    text-align: center;
    color: #333;
    margin-bottom: 30px;
    font-size: 28px;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    color: #555;
    font-weight: 500;
}

input[type="text"],
input[type="password"],
input[type="email"] {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 14px;
    transition: border-color 0.3s;
}

input:focus {
    outline: none;
    border-color: #667eea;
}

.btn {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.2s;
}

.btn:hover {
    transform: translateY(-2px);
}

.btn-login {
    width: auto;
    display: inline-block;
    padding: 12px 40px;
}

.quick-upload-link {
    color: #667eea;
    font-weight: 600;
    font-size: 14px;
    text-decoration: none;
}

.quick-upload-link:hover {
    text-decoration: underline;
}

.btn-logout {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    margin-top: 20px;
    width: auto;
    display: inline-block;
    padding: 12px 40px;
    color: white;
    font-weight: 600;
}

.mode-buttons {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin-bottom: 20px;
}

.mode-btn {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    background: #ddd;
    color: #333;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    transition: background 0.3s;
}

.mode-btn.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.mode-btn:hover {
    background: #ccc;
}

.mode-btn.active:hover {
    background: linear-gradient(135deg, #5a6fd6 0%, #6a4190 100%);
}

.btn-approve {
    padding: 6px 12px;
    border: none;
    border-radius: 3px;
    background: #4caf50;
    color: white;
    cursor: pointer;
    font-size: 12px;
    margin-right: 5px;
}

.btn-reject {
    padding: 6px 12px;
    border: none;
    border-radius: 3px;
    background: #f44336;
    color: white;
    cursor: pointer;
    font-size: 12px;
}

.inline-form {
    display: inline;
}

.inline-form select {
    padding: 6px 10px;
    border: 1px solid #ddd;
    border-radius: 3px;
    font-size: 14px;
}

.register-link {
    text-align: center;
    margin-top: 20px;
    color: #666;
}

.register-link a {
    color: #667eea;
    text-decoration: none;
    font-weight: 600;
}

.register-link a:hover {
    text-decoration: underline;
}

.error-message {
    background: #fee;
    color: #c33;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 20px;
    text-align: center;
    border: 1px solid #fcc;
}

.success-message {
    background: #efe;
    color: #3c3;
    padding: 10px;
    border-radius: 5px;
    margin-bottom: 20px;
    text-align: center;
    border: 1px solid #cfc;
}

.home-page {
    background: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
    text-align: center;
    max-width: 900px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
    background: white;
}

th, td {
    padding: 12px 15px;
    border: 1px solid #ddd;
    text-align: left;
    font-size: 14px;
}

th {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    font-weight: 600;
}

tr:nth-child(even) {
    background: #f9f9f9;
}

tr:hover {
    background: #f1f1f1;
}

.home-page p {
    color: #666;
    margin-bottom: 20px;
}