/* Reset and Base Styles */
* {
    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;
    line-height: 1.6;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Authentication Styles */
.auth-container {
    background: white;
    border-radius: 12px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
    padding: 40px;
    max-width: 450px;
    margin: 100px auto;
    text-align: center;
}

.auth-header h1 {
    color: #333;
    margin-bottom: 10px;
    font-size: 2.2rem;
    font-weight: 700;
}

.auth-header p {
    color: #666;
    margin-bottom: 30px;
    font-size: 1.1rem;
}

.auth-tabs {
    display: flex;
    margin-bottom: 30px;
    border-radius: 8px;
    overflow: hidden;
    border: 2px solid #f0f0f0;
}

.tab-btn {
    flex: 1;
    padding: 12px 20px;
    border: none;
    background: #f8f9fa;
    color: #666;
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
}

.tab-btn.active {
    background: #667eea;
    color: white;
}

.tab-btn:hover {
    background: #5a67d8;
    color: white;
}

.auth-form {
    display: none;
    text-align: left;
}

.auth-form.active {
    display: block;
}

.auth-form h2 {
    text-align: center;
    color: #333;
    margin-bottom: 25px;
    font-size: 1.8rem;
}

/* Form Styles */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
    font-size: 0.95rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #fff;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

/* Button Styles */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(102, 126, 234, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: #f8f9fa;
    color: #666;
    border: 2px solid #e2e8f0;
}

.btn-secondary:hover {
    background: #e2e8f0;
    border-color: #cbd5e0;
}

.btn-danger {
    background: #e53e3e;
    color: white;
    box-shadow: 0 4px 15px rgba(229, 62, 62, 0.3);
}

.btn-danger:hover {
    background: #c53030;
    transform: translateY(-2px);
}

.btn-success {
    background: #38a169;
    color: white;
    box-shadow: 0 4px 15px rgba(56, 161, 105, 0.3);
}

.btn-success:hover {
    background: #2f855a;
    transform: translateY(-2px);
}

/* Message Styles */
.message-container {
    margin-top: 20px;
    padding: 12px 15px;
    border-radius: 8px;
    font-weight: 500;
    display: none;
}

.message-container.success {
    background: #f0fff4;
    color: #2f855a;
    border: 1px solid #9ae6b4;
    display: block;
}

.message-container.error {
    background: #fed7d7;
    color: #c53030;
    border: 1px solid #feb2b2;
    display: block;
}

/* Demo Credentials Styles */
.demo-credentials {
    margin-top: 30px;
    padding: 25px;
    background: #f8f9fa;
    border-radius: 12px;
    border: 1px solid #e9ecef;
    text-align: center;
}

.demo-credentials h3 {
    color: #333;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.demo-credentials p {
    color: #666;
    margin-bottom: 20px;
    font-size: 0.95rem;
}

.demo-accounts {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.demo-btn {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 15px 20px;
    background: white;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: inherit;
    text-align: left;
    min-width: 180px;
}

.demo-btn:hover {
    border-color: #667eea;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.15);
}

.demo-btn.admin-demo:hover {
    border-color: #f59e0b;
    box-shadow: 0 4px 12px rgba(245, 158, 11, 0.15);
}

.demo-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.demo-details {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.demo-details strong {
    color: #333;
    font-size: 0.95rem;
}

.demo-details small {
    color: #666;
    font-size: 0.8rem;
}

.demo-note {
    font-size: 0.85rem !important;
    color: #888 !important;
    font-style: italic;
    margin-bottom: 0 !important;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    border-radius: 12px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.25);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-header {
    padding: 20px 25px;
    border-bottom: 1px solid #e2e8f0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    color: #333;
    font-size: 1.5rem;
}

.close {
    font-size: 24px;
    font-weight: bold;
    color: #999;
    cursor: pointer;
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s ease;
}

.close:hover {
    background: #f0f0f0;
    color: #666;
}

.modal form {
    padding: 25px;
}

.modal-footer {
    padding: 20px 25px;
    border-top: 1px solid #e2e8f0;
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.text-left {
    text-align: left;
}

.text-right {
    text-align: right;
}

.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }

.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }

.p-1 { padding: 0.25rem; }
.p-2 { padding: 0.5rem; }
.p-3 { padding: 1rem; }
.p-4 { padding: 1.5rem; }

/* Responsive Design */
@media (max-width: 768px) {
    .auth-container {
        margin: 50px auto;
        padding: 30px 20px;
    }
    
    .modal-content {
        width: 95%;
    }
    
    .modal form {
        padding: 20px;
    }
    
    .modal-header,
    .modal-footer {
        padding: 15px 20px;
    }
}

@media (max-width: 480px) {
    .auth-header h1 {
        font-size: 1.8rem;
    }
    
    .tab-btn {
        padding: 10px 15px;
        font-size: 0.9rem;
    }
    
    .btn {
        padding: 10px 20px;
        font-size: 0.9rem;
    }
    
    .demo-accounts {
        flex-direction: column;
        align-items: center;
    }
    
    .demo-btn {
        min-width: 250px;
        max-width: 280px;
    }
}