:root {
    --primary-color: #4a90e2;
    --secondary-color: #67c23a;
    --accent-color: #f5a623;
    --text-color: #4a4a4a;
    --light-gray: #f8f9fa;
    --border-color: #e8e8e8;
    --hover-color: #5c9ce6;
    --card-shadow: 0 4px 6px rgba(0,0,0,0.05);
}

html {
    font-size: 14px;
    position: relative;
    min-height: 100%;
}

@media (min-width: 768px) {
    html {
        font-size: 16px;
    }
}

body {
    margin-bottom: 60px;
    color: var(--text-color);
    font-family: 'Nunito', 'Segoe UI', sans-serif;
    background-color: #fafafa;
}

/* Navbar Styling */
.navbar {
    background-color: white !important;
    box-shadow: var(--card-shadow);
    padding: 0.8rem 1.2rem;
    margin-bottom: 2rem;
}

.navbar-brand {
    color: var(--primary-color) !important;
    font-weight: 700;
    font-size: 1.6rem;
    letter-spacing: -0.5px;
}

.nav-link {
    color: var(--text-color) !important;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.2s ease;
    padding: 0.6rem 1.2rem !important;
    border-radius: 6px;
}

.nav-link:hover {
    color: var(--primary-color) !important;
    background-color: rgba(74, 144, 226, 0.1);
}

.dropdown-menu {
    border: none;
    box-shadow: var(--card-shadow);
    border-radius: 8px;
    padding: 0.5rem;
}

.dropdown-item {
    padding: 0.7rem 1.2rem;
    color: var(--text-color);
    border-radius: 4px;
    font-weight: 500;
    transition: all 0.2s ease;
}

.dropdown-item:hover {
    background-color: rgba(74, 144, 226, 0.1);
    color: var(--primary-color);
    transform: translateX(5px);
}

/* Button Styling */
.btn {
    padding: 0.6rem 1.5rem;
    border-radius: 8px;
    transition: all 0.2s ease;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.btn-primary {
    background-color: var(--primary-color);
    border: none;
    box-shadow: 0 2px 4px rgba(74, 144, 226, 0.2);
}

.btn-primary:hover {
    background-color: var(--hover-color);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(74, 144, 226, 0.3);
}

/* Form Controls */
.form-control {
    border: 2px solid var(--border-color);
    border-radius: 8px;
    padding: 0.7rem 1rem;
    transition: all 0.2s ease;
    font-size: 1rem;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(74, 144, 226, 0.15);
}

/* Card Styling */
.card {
    border: none;
    box-shadow: var(--card-shadow);
    border-radius: 12px;
    transition: all 0.3s ease;
    background-color: white;
    margin-bottom: 1.5rem;
}

.card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.1);
}

.card-header {
    background-color: white;
    border-bottom: 1px solid var(--border-color);
    padding: 1.2rem 1.5rem;
    font-weight: 600;
    border-radius: 12px 12px 0 0 !important;
}

.card-body {
    padding: 1.5rem;
}

/* Employee Details Styling */
.employee-header {
    background-color: white;
    border-radius: 12px;
    box-shadow: var(--card-shadow);
    padding: 2rem;
    margin-bottom: 2rem;
    text-align: center;
}

.employee-image {
    width: 160px;
    height: 160px;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid var(--primary-color);
    padding: 4px;
    margin-bottom: 1.5rem;
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.employee-name {
    color: var(--primary-color);
    font-size: 1.8rem;
    font-weight: 700;
    margin: 0.5rem 0;
}

.employee-position {
    color: var(--text-color);
    font-size: 1.2rem;
    margin-bottom: 1rem;
    opacity: 0.8;
}

/* Table Styling */
.table {
    background-color: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: var(--card-shadow);
}

.table th {
    background-color: var(--light-gray);
    color: var(--primary-color);
    font-weight: 600;
    padding: 1rem;
    border-bottom: 2px solid var(--border-color);
}

.table td {
    padding: 1rem;
    vertical-align: middle;
    border-bottom: 1px solid var(--border-color);
}

.table tbody tr:hover {
    background-color: rgba(74, 144, 226, 0.05);
}

/* Tab Styling */
.nav-tabs {
    border: none;
    margin-bottom: 1.5rem;
    gap: 0.5rem;
}

.nav-tabs .nav-link {
    border: none;
    color: var(--text-color);
    font-weight: 600;
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    background-color: white;
    box-shadow: var(--card-shadow);
}

.nav-tabs .nav-link.active {
    color: white !important;
    background-color: var(--primary-color);
}

.nav-tabs .nav-link:hover:not(.active) {
    background-color: var(--light-gray);
    color: var(--primary-color) !important;
}

.tab-content {
    background-color: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--card-shadow);
}

/* Alerts and Messages */
.alert {
    border: none;
    border-radius: 8px;
    padding: 1rem 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: var(--card-shadow);
}

.alert-success {
    background-color: #f0f9eb;
    color: var(--secondary-color);
}

.alert-info {
    background-color: #f4f4f5;
    color: var(--text-color);
}

.alert-warning {
    background-color: #fdf6ec;
    color: var(--accent-color);
}

/* Custom Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.3s ease-out;
}

/* Stilovi za detalje zaposlenika */
.employee-contact {
    margin-top: 10px;
}

.employee-contact p {
    margin-bottom: 5px;
}

/* Date input styling */
.input-group input[type="date"] {
    position: absolute;
    opacity: 0;
    z-index: 2;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.input-group input[type="text"] {
    z-index: 1;
    background-color: #fff;
}

/* Datepicker styling */
.ui-datepicker {
    background-color: white;
    border: 1px solid #ddd;
    border-radius: 4px;
    padding: 10px;
    width: 300px;
}

.ui-datepicker .ui-datepicker-header {
    background: #f8f9fa;
    border: none;
    border-radius: 4px;
    padding: 5px;
}

.ui-datepicker .ui-datepicker-prev,
.ui-datepicker .ui-datepicker-next {
    cursor: pointer;
}

.ui-datepicker table {
    margin: 5px 0;
}

.ui-datepicker th {
    color: #495057;
    font-weight: 500;
}
.ui-datepicker td {
    padding: 2px;
}

.ui-datepicker td span,
.ui-datepicker td a {
    text-align: center;
    padding: 5px;
    border-radius: 4px;
}

.ui-datepicker td a.ui-state-active {
    background: #0d6efd;
    color: white;
}

.ui-datepicker td a.ui-state-highlight {
    background: #e9ecef;
}

#dokumentPreviewModal {
    display: none;
    position: fixed;
    z-index: 1050;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.4);
}

#dokumentPreviewModal .modal-content {
    background-color: #fefefe;
    margin: 10% auto;
    padding: 20px;
    border: 1px solid #888;
    width: 80%;
    max-width: 800px;
    position: relative;
    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2);
}

#dokumentPreviewModal .close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

#dokumentPreviewModal .close:hover,
#dokumentPreviewModal .close:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

#dokumentPreviewModal .modal-footer {
    text-align: center;
    padding: 10px 0;
}

#dokumentPreviewModal h2 {
    margin-top: 0;
    text-align: center;
}

#dokumentPreviewModal img,
#dokumentPreviewModal iframe {
    max-width: 100%;
    max-height: 70vh;
    display: block;
    margin: 0 auto;
}

.btn:focus, .btn:active:focus, .btn-link.nav-link:focus, .form-control:focus, .form-check-input:focus {
    box-shadow: 0 0 0 0.1rem white, 0 0 0 0.25rem #258cfb;
}