:root {
    --primary-color: #3b82f6;
    --primary-light: #60a5fa;
    --primary-dark: #2563eb;
    --primary-gradient: linear-gradient(135deg, #3b82f6 0%, #60a5fa 100%);
    --secondary-color: #f59e0b;
    
    --text-color: #334155;
    --text-light: #64748b;
    --bg-color: #f8fafc;
    --bg-light: #ffffff;
    --border-color: #e2e8f0;
    
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --error-color: #ef4444;
    
    --sidebar-width: 260px;
    --header-height: 64px;
    
    --border-radius-sm: 6px;
    --border-radius-md: 10px;
    --border-radius-lg: 16px;
    
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
    
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

html, body {
    width: 100%;
    height: 100%;
    overflow-x: hidden;
}

body {
    background: linear-gradient(135deg, #f0f4ff 0%, #ffffff 100%);
    color: var(--text-color);
    position: relative;
    min-height: 100vh;
}

a {
    text-decoration: none;
    color: inherit;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 30px;
}

.floating-shape {
    position: absolute;
    border-radius: 50%;
    background: linear-gradient(135deg, rgba(96, 165, 250, 0.05) 0%, rgba(59, 130, 246, 0.05) 100%);
    filter: blur(20px);
    z-index: -1;
}

.shape1 {
    top: 10%;
    left: 5%;
    width: 400px;
    height: 400px;
}

.shape2 {
    bottom: 5%;
    right: 5%;
    width: 350px;
    height: 350px;
}

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

.form-group label {
    display: block;
    margin-bottom: 6px;
    font-size: 14px;
    color: var(--text-light);
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid var(--border-color);
    background-color: var(--bg-color);
    border-radius: var(--border-radius-md);
    font-size: 14px;
    color: var(--text-color);
    transition: var(--transition);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-light);
    background-color: white;
    box-shadow: 0 0 0 4px rgba(96, 165, 250, 0.15);
}

.form-control::placeholder {
    color: var(--text-light);
}

.form-row {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.form-row .form-group {
    flex: 1;
    margin-bottom: 0;
}

.textarea-control {
    min-height: 100px;
    resize: vertical;
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%2394a3b8' viewBox='0 0 16 16'%3E%3Cpath d='M8 11.5l-5-5h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 15px center;
}

.checkbox-container {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.checkbox-container input[type="checkbox"] {
    width: 18px;
    height: 18px;
    margin-right: 10px;
    accent-color: var(--primary-color);
    cursor: pointer;
}

.checkbox-container label {
    font-size: 14px;
    color: var(--text-light);
    cursor: pointer;
    margin-bottom: 0;
}

.btn {
    padding: 12px 20px;
    border-radius: var(--border-radius-md);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: none;
}

.btn i {
    margin-right: 8px;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
    box-shadow: 0 4px 12px rgba(96, 165, 250, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-light);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--bg-color);
    color: var(--text-color);
    transform: translateY(-2px);
}

.search-container {
    position: relative;
    width: 300px;
}

.search-input {
    width: 100%;
    padding: 10px 15px 10px 38px;
    border: 1px solid var(--border-color);
    background-color: white;
    border-radius: var(--border-radius-md);
    font-size: 14px;
    color: var(--text-color);
    transition: var(--transition);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-light);
    box-shadow: 0 0 0 3px rgba(96, 165, 250, 0.15);
}

.search-icon {
    position: absolute;
    top: 50%;
    left: 12px;
    transform: translateY(-50%);
    color: var(--text-light);
    font-size: 14px;
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.active {
    display: flex;
}

.modal-content {
    width: 100%;
    max-width: 600px;
    background-color: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    position: relative;
    animation: scale-in 0.3s ease-out;
    max-height: 90vh;
    display: flex;
    flex-direction: column;
}

.modal-header {
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    color: var(--primary-color);
    font-size: 20px;
    font-weight: 600;
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-light);
    font-size: 16px;
    cursor: pointer;
    width: 32px;
    height: 32px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.modal-close:hover {
    background-color: var(--bg-color);
    color: var(--text-color);
}

.modal-body {
    padding: 20px;
    overflow-y: auto;
    flex: 1;
}

.modal-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.section-title {
    margin-bottom: 25px;
    font-size: 28px;
    color: var(--primary-color);
    letter-spacing: 0.8px;
    font-weight: 700;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 0;
    width: 40px;
    height: 3px;
    background: var(--primary-gradient);
    border-radius: 50px;
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 14px 20px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    background-color: var(--bg-color);
    font-weight: 600;
    color: var(--primary-color);
    font-size: 14px;
}

tbody tr {
    transition: background-color var(--transition);
}

tbody tr:hover {
    background-color: rgba(0, 0, 0, 0.01);
}

.status {
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
    text-align: center;
    display: inline-block;
}

.status-pending {
    background-color: #fef3c7;
    color: #d97706;
}

.status-processing {
    background-color: #e0f2fe;
    color: #0284c7;
}

.status-completed {
    background-color: #d1fae5;
    color: #059669;
}

.status-cancelled {
    background-color: #fee2e2;
    color: #dc2626;
}

@keyframes scale-in {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@media (max-width: 768px) {
    .form-row {
        flex-direction: column;
        gap: 0;
    }
    
    .search-container {
        width: 100%;
    }
    
    .modal-content {
        max-width: 90%;
    }
}

@media (max-width: 576px) {
    .container {
        padding: 15px;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .btn {
        padding: 10px 16px;
        font-size: 13px;
    }
}