/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Font Awesome Icon Fixes */
.fas, .far, .fab, .fa {
    font-family: "Font Awesome 6 Free", "Font Awesome 6 Pro", "Font Awesome 6 Brands" !important;
    font-weight: 900 !important;
    font-style: normal !important;
    font-variant: normal !important;
    text-rendering: auto !important;
    line-height: 1 !important;
    -webkit-font-smoothing: antialiased !important;
    -moz-osx-font-smoothing: grayscale !important;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    color: #333;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Header Styles */
header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 20px 30px;
    margin-bottom: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

header h1 {
    color: #2c3e50;
    font-size: 2.2rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 15px;
}

header h1 i {
    color: #3498db;
}

.header-actions {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

/* Button Styles */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    min-width: 120px;
    justify-content: center;
}

.btn-primary {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #2980b9, #1f5f8b);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.4);
}

.btn-secondary {
    background: linear-gradient(135deg, #95a5a6, #7f8c8d);
    color: white;
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #7f8c8d, #6c7b7d);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(149, 165, 166, 0.4);
}

.btn-success {
    background: linear-gradient(135deg, #27ae60, #229954);
    color: white;
}

.btn-success:hover {
    background: linear-gradient(135deg, #229954, #1e8449);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(39, 174, 96, 0.4);
}

.btn-danger {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: white;
}

.btn-danger:hover {
    background: linear-gradient(135deg, #c0392b, #a93226);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(231, 76, 60, 0.4);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* Active state styles for filter buttons */
.btn.active-blue {
    background: linear-gradient(135deg, #3498db, #2980b9) !important;
    color: #fff !important;
    box-shadow: 0 5px 15px rgba(52, 152, 219, 0.4) !important;
}
.btn.active-green {
    background: linear-gradient(135deg, #27ae60, #229954) !important;
    color: #fff !important;
    box-shadow: 0 5px 15px rgba(39, 174, 96, 0.4) !important;
}

/* Counter styling */
.counter {
    background-color: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.8em;
    font-weight: bold;
    margin-left: 6px;
    min-width: 20px;
    text-align: center;
    display: inline-block;
}

.btn.active-blue .counter,
.btn.active-green .counter {
    background-color: rgba(255, 255, 255, 0.3);
}

.btn:not(.active-blue):not(.active-green) .counter {
    background-color: #6c757d;
    color: white;
}

/* Section Styles */
.employee-section, .scanner-section {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 15px;
    padding: 30px;
    margin-bottom: 30px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    flex-wrap: wrap;
    gap: 20px;
}

.section-header h2 {
    color: #2c3e50;
    font-size: 1.8rem;
    font-weight: 600;
}

/* Search Box */
.search-box {
    position: relative;
    min-width: 300px;
}

.search-box input {
    width: 100%;
    padding: 12px 45px 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 25px;
    font-size: 14px;
    transition: all 0.3s ease;
    background: white;
}

.search-box input:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

.search-box i {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #7f8c8d;
}

/* Employee Grid */
.employee-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
}

.employee-card {
    background: white;
    border-radius: 12px;
    padding: 25px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
    cursor: pointer;
    border: 2px solid transparent;
}

.employee-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    border-color: #3498db;
}

.employee-card-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
}

.employee-photo {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid #3498db;
}

.employee-info h3 {
    color: #2c3e50;
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 5px;
}

.employee-info p {
    color: #7f8c8d;
    font-size: 0.9rem;
}

.employee-details-info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
    font-size: 0.9rem;
}

.employee-details-info div {
    display: flex;
    align-items: center;
    gap: 8px;
    color: #555;
}

.employee-details-info i {
    color: #3498db;
    width: 16px;
}

.employee-actions {
    margin-top: 20px;
    display: flex;
    gap: 10px;
}

.employee-actions .btn {
    flex: 1;
    padding: 8px 16px;
    font-size: 12px;
    min-width: auto;
}

/* Scanner Styles */
.scanner-container {
    max-width: 800px;
    margin: 0 auto;
}

.scanner-controls {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 30px;
}

.scanner-options {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.scanner-options label {
    font-weight: 600;
    color: #2c3e50;
}

.scanner-options select {
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 14px;
    background: white;
    transition: border-color 0.3s ease;
}

.scanner-options select:focus {
    outline: none;
    border-color: #3498db;
}

.scanner-preview {
    background: #f8f9fa;
    border: 2px dashed #dee2e6;
    border-radius: 12px;
    padding: 40px;
    text-align: center;
    margin-bottom: 30px;
    min-height: 300px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.preview-area {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: #6c757d;
}

.preview-area i {
    font-size: 3rem;
    margin-bottom: 15px;
    color: #dee2e6;
}

.preview-area img {
    max-width: 100%;
    max-height: 250px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.scanner-actions {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

/* 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);
    /* remove backdrop blur to reduce GPU repaints that can flicker */
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 0;
    border-radius: 15px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: none; /* disable animation to avoid flicker */
    will-change: transform, opacity;
    -webkit-font-smoothing: antialiased;
}

.modal-content.large {
    max-width: 900px;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    padding: 20px 30px;
    border-radius: 15px 15px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    margin: 0;
    font-size: 1.5rem;
}

.close {
    color: white;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.close:hover {
    opacity: 0.7;
}

/* Form Styles */
form {
    padding: 30px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 600;
    color: #2c3e50;
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 14px;
    transition: border-color 0.3s ease;
    background: white;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #3498db;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

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

.photo-preview,
.documents-preview {
    margin-top: 10px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.photo-preview img,
.documents-preview img {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 8px;
    border: 2px solid #e0e0e0;
}

.modal-actions {
    display: flex;
    gap: 15px;
    justify-content: flex-end;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #e0e0e0;
}

/* Employee Details Styles */
.employee-details {
    padding: 30px;
}

.employee-details-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid #e0e0e0;
}

.employee-details-photo {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid #3498db;
}

.employee-details-info h2 {
    color: #2c3e50;
    font-size: 2rem;
    margin-bottom: 10px;
}

.employee-details-info p {
    color: #7f8c8d;
    font-size: 1.1rem;
    margin-bottom: 5px;
}

.employee-details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.detail-card {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    border-left: 4px solid #3498db;
}

.detail-card h3 {
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.detail-card p {
    color: #555;
    line-height: 1.5;
}

.documents-section {
    margin-top: 30px;
}

.documents-section h3 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 1.3rem;
}

.documents-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 15px;
    contain: layout paint; /* isolate grid to reduce reflow flicker */
    will-change: contents;
}

.document-item {
    background: white;
    border: 2px solid #e0e0e0;
    border-radius: 10px;
    padding: 15px;
    text-align: center;
    transition: border-color 0.2s ease, box-shadow 0.2s ease; /* avoid animating layout-affecting transforms */
    cursor: default;
}

.document-item:hover {
    border-color: #3498db;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

/* Smooth remove to reduce perceived flicker */
.document-item.removing {
    opacity: 0;
    transform: scale(0.98);
}

.document-item img {
    width: 100%;
    height: 120px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 10px;
    display: block; /* remove inline-gap and stabilize layout */
}

.document-item p {
    color: #555;
    font-size: 0.9rem;
    margin: 0;
}

/* Non-image file thumbnail */
.doc-thumb {
    width: 100%;
    height: 120px;
    border-radius: 8px;
    background: #f0f3f6;
    color: #2c3e50;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    letter-spacing: 0.3px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    header {
        flex-direction: column;
        text-align: center;
    }
    
    header h1 {
        font-size: 1.8rem;
    }
    
    .header-actions {
        width: 100%;
        justify-content: center;
    }
    
    .section-header {
        flex-direction: column;
        text-align: center;
    }
    
    .search-box {
        min-width: 100%;
    }
    
    .employee-grid {
        grid-template-columns: 1fr;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
    
    .scanner-controls {
        grid-template-columns: 1fr;
    }
    
    .scanner-actions {
        flex-direction: column;
    }
    
    .scanner-actions .btn {
        width: 100%;
    }
    
    .modal-content {
        width: 95%;
        margin: 10% auto;
    }
    
    .modal-actions {
        flex-direction: column;
    }
    
    .employee-details-header {
        flex-direction: column;
        text-align: center;
    }
    
    .employee-details-grid {
        grid-template-columns: 1fr;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Success/Error Messages */
/* Toast notifications (fixed, no layout shift) */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 2000;
}

.toast {
    min-width: 260px;
    max-width: 360px;
    padding: 12px 16px;
    border-radius: 8px;
    font-weight: 500;
    box-shadow: 0 6px 24px rgba(0,0,0,0.12);
    backdrop-filter: blur(6px);
    border: 1px solid rgba(255,255,255,0.2);
}

.toast.success { background: #27ae60; color: #fff; }
.toast.error { background: #e74c3c; color: #fff; }
.toast.info { background: #3498db; color: #fff; }