body {
    margin: 0;
}
.main_div {
    overflow-y: auto; 
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #ECF3FA;    
    z-index: -1;
}
.eps_logo {
    height: 52px;
    width: 210px;    
    right: 0px;
    top: 0;
}
.sidebar {
    position: fixed;
    left: -1px;
    width: 350px;
    height: 100%;
    min-height: 100%;
    box-shadow: 0 0 1px rgba(0, 0, 0, 0.5);
    z-index: 1000;
    background: #ECF3FA;
    overflow-y: auto; 
    padding:15px;
}
    .sidebar header {
        font-size: 22px;
        font-weight: bolder;
        color: black;
        text-align: center;
        line-height: 30px;
        user-select: none;
    }
.main_menu {
    padding-top:10px;
    text-align:center;
}
.panel_clas {
    padding: 5px;
    font-family: "Segoe UI", "Roboto", "Open Sans", Arial, sans-serif;
    font-size: 13px;
    color: #003366; /* tamno teget/tamno plavo-siva */
    line-height: 1.5;
    letter-spacing: 0.3px;    
}
.block_sp_ks {
    padding: 5px;
    font-family: "Segoe UI", "Roboto", "Open Sans", Arial, sans-serif;
    font-size: 13px;
    color: #003366; /* tamno teget/tamno plavo-siva */
    line-height: 1.5;
    letter-spacing: 0.3px;
    border: 1px black solid;
    border-radius: 10px;
    border-color: #b0b0b0;
}
.button-group {
    padding: 0px 7px;
    display: flex;
    flex-direction: column; /* елементи иду један испод другог */
    gap: 2px;
}
.container {
    padding-top: 5px;
    display: flex;
    flex-wrap: wrap; /* dozvoljava prelom u novi red kad nema mesta */
    gap: 10px;
    justify-content: center;
    padding-left: 352px; /* prostor za sidebar */
}
.div_bill {
    padding: 5px;
    box-shadow: 0 1.5px 1.5px rgba(0,0,0,0.1);
    background-color: white;
    position: relative;
    z-index: 1;
    width: 100%; /* neka na mobilnom bude fleksibilan */
    max-width: 730px; /* na desktopu neka ostane ograničen */
    overflow-x: auto; /* ako tabela štrči, dobija skrol */
    border: 1px solid #ddd;
    border-radius:10px;
}
.div_wellcome {
    margin-top: 40px;
    width: 900px;
    background: rgba(255, 255, 255, 0.75);
    border-radius: 12px;
    padding: 20px 30px;
    box-shadow: 0 1.5px 1.5px rgba(0,0,0,0.1);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
    text-align: center;
    font-family: "Segoe UI", "Roboto", "Open Sans", Arial, sans-serif;
    font-size:15px;
    color: #003366; /* tamno teget/tamno plavo-siva */
}
.div_bill table {
    width: 100%; /* koristi celu širinu racun diva */
    border-collapse: collapse;
}
table.custom {
    width: 100%;
    border-collapse: collapse;
}

    table.custom th, table.custom td {
        border: 1px solid black;
        padding: 1px;
    }
.tabela_kom {
    width: 725px;    
}

    .tabela_kom, .tabela_kom td {
        font-family: Arial, sans-serif;
        font-size: 12px;
    }
.panel_msg {
    width: auto;
    max-width: 850px;
    display: inline-block; /* širina prati sadržaj */
    font-family: "Segoe UI", "Roboto", "Open Sans", Arial, sans-serif;
    background: #fff;
    color: #003366;
    font-size: 15px;
    border-radius: 8px;
    padding: 12px 20px;
    margin: 10px;
    box-shadow: 0 1.5px 1.5px rgba(0,0,0,0.1);
    border: 1px #003366 solid;
    position: fixed;
    bottom: 50px;
    left: 380px;
    z-index: 11000;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeSlideIn 0.5s forwards;
}

@keyframes fadeSlideIn {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.dropdown_select {
    width: 240px;
    padding: 5px 10px;
    font-size: 13px;
    font-family: "Segoe UI", "Roboto", "Open Sans", Arial, sans-serif;
    border: 1px solid #d1d1d1;
    border-radius: 4px;
    background-color: #fff;
    color: #003366;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.modern-text {
    font-family: "Segoe UI", "Roboto", "Open Sans", Arial, sans-serif;
    font-size: 13px;
    color: #003366; /* tamno teget/tamno plavo-siva */
    line-height: 1.5;
    letter-spacing: 0.3px;
    font-weight: bold;
}
.textbox_input {
    padding: 5px 10px;
    font-size: 13px;
    font-family: Arial, Helvetica, sans-serif;
    border: 1px solid #d1d1d1;
    border-radius: 4px;
    background-color: #fff;
    color:#003366;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
textbox_input:focus {
    border-color: #4a90e2; /* diskretna plava na fokus */
    box-shadow: 0 0 4px rgba(74, 144, 226, 0.3);
}
.image-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    z-index: 100000;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.image-preview {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 99999;
    background-color: white;
    border: 1px solid #ccc;
    padding: 5px;
    box-shadow: 0 1.5px 1.5px rgba(0,0,0,0.1);
}
    .image-preview img {
        max-width: 90vw; /* max širina 90% širine ekrana */
        max-height: 90vh; /* max visina 90% visine ekrana */
        width: auto; /* održava proporciju */
        height: auto; /* održava proporciju */
        display: block;
        border-radius: 6px;
    }
.table-modern {
    border-collapse: separate;
    border-spacing: 0;
    font-family: "Segoe UI", "Roboto", "Open Sans", Arial, sans-serif;
    border: 1px solid rgba(0, 51, 102, 0.3); /* tanje, svetlije */
    font-size: 14px;
    color: #003366;
    background: #fff;
    border-radius: 3px;
    overflow: hidden;
    margin: 15px 0;
}
    .table-modern tr,
    .table-modern td {
        border: 1px solid rgba(0, 51, 102, 0.3); /* tanje, svetlije */
    }

    .table-modern th {
        background-color: #e6f0fa; /* svetlo plava za header */
        font-weight: 600;
    }
.table-modernth {
    background: #005baa; /* EPS plava */
    color: #fff;
    font-weight: 600;
    border: 1px solid rgba(0, 51, 102, 0.3); /* tanje, svetlije */
}
.table-moderntd {
    background: #fff; /* EPS plava */
    color: #003366;
    font-weight: 600;
    text-align: center;
    border: 1px solid rgba(0, 51, 102, 0.3); /* tanje, svetlije */
}
.zone-green {
    background: #57C785;
    color: #003366;
    font-weight: 600;
    border: 1px solid rgba(0, 51, 102, 0.3); /* tanje, svetlije */
}
.zone-blue {
    background: #00B7FF;
    color: #003366;
    font-weight: 600;
    border: 1px solid rgba(0, 51, 102, 0.3); /* tanje, svetlije */
}
.zone-red {
    background: #f28b82;
    color: #003366;
    font-weight: 600;
    border: 1px solid rgba(0, 51, 102, 0.3); /* tanje, svetlije */
}

.blue-bar {
    width: 100%;
    height: 10px; /* možeš promeniti visinu po potrebi */
    background: linear-gradient(to right, #003366, #0066cc); /* tamnija plava ka srednje plavoj */
    display: flex;
    align-items: center;
    justify-content: center;
    color: white; /* tekst bele boje */
    font-weight: bold;
    font-family: Arial, sans-serif;
    border-radius: 4px; /* blago zaobljenje ivica */
}

.headline {
    font-family: "Segoe UI", "Roboto", "Open Sans", Arial, sans-serif;
    font-size: 14px;
    color: #111111; /* tamno teget/tamno plavo-siva */
    line-height: 1.5;
    letter-spacing: 0.3px;
    font-weight: bold;
}
.btn-primary {
    background-color: #005baa; /* EPS plava */
    color: #fff;
    border: none;
    padding: 10px 18px;
    border-radius: 6px;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.3s;
    font-family: "Segoe UI", "Roboto", "Open Sans", Arial, sans-serif;
}
    .btn-primary:hover {
        background-color: #004080; 
}
.btn-primary_x {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 23px;
    height: 23px;
    border-radius: 45%;
    background: #f5f5f5;
    color: #005baa;
    font-weight: bold;
    font-size: 14px;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
}
    .btn-primary_x:hover {
        background: #005baa;
        color: #fff;
    }
.div_btn-primary_x {
    text-align:right;
}
.disabled-button {
    background-color: #a6c0d6; /* svetlija plava - ugašeno */
    color: #f2f2f2;
    border: none;
    padding: 10px 18px;
    border-radius: 6px;
    font-size: 16px;
    font-family: "Segoe UI", "Roboto", "Open Sans", Arial, sans-serif;
    cursor: not-allowed;
    opacity: 0.7;
}
.info_icon {
    width:16px;
    height:16px;
}
.warning_lb {
    text-align: center;
    padding: 3px;
}
.error-label {
    border: 1px solid red; /* crveni okvir */
    color: red; /* crveni tekst */
    background-color: #ffe6e6; /* blaga pozadinska boja za isticanje */
    padding: 3px 10px; /* unutrašnji razmak */
    border-radius: 4px; /* blago zaobljeni uglovi */
    display: inline-block; /* da labela dobije dimenzije */
    font-weight: bold; /* naglašen tekst */
    font-family: "Segoe UI", "Roboto", "Open Sans", Arial, sans-serif;
    font-size:14px;
}
/* === Responsive dodaci === */
/* Telefoni do 768px širine */
@media (max-width: 768px) {
    .sidebar {
        position: relative;
        width: 96%;
        height: auto;
        min-height: auto;
        box-shadow: none;
        padding: 10px;
    }
    .div_wellcome {
        margin-top: 0; /* odmah ispod */
        width: 96%;
        border-radius: 0; /* možeš i da skineš zaobljenje ako želiš */
        padding: 15px; /* malo manji padding da stane na ekran */
    }
    .container {
        width: 96%;
        padding-left: 0; /* nema više rezervisanog prostora */
        flex-direction: column; /* računi idu jedan ispod drugog */
        align-items: center;
    }

    .div_bill {
        width: 96%;
        max-width: 100%; /* nema ograničenja na mobilnom */
        overflow-x: auto; /* ako tabela štrči → horizontalni skrol */
        overflow-y: hidden;
        box-sizing: border-box;
    }

    .tabela_kom {
        width: 96%;
        min-width: 715px; /* sprečava da se kolone zbiju previše */
    }

    .headline {
        font-size: 14px;
    }

    .panel_clas {
        font-size: 12px;
    }

    .textbox_input,
    .dropdown_select {
        width: 96%;
        
    }

    .btn-primary {
        width: 96%;
        font-size: 15px;
    }
    .disabled-button {
        width: 96%;
        font-size: 15px;
    }

        @media (max-width: 768px) {
            .div_bill .blue-bar {
                width: 96%;
                min-width: 715px; /* isto kao tabela */
            }

            @media (max-width: 768px) {
                .div_bill .headline {
                    font-size: 14px;
                    margin: 5px 0;
                    width: 96%;
                    min-width: 715px;
                }

                @media (max-width: 600px) {
                    .panel_msg {
                        width: auto;
                        max-width: 350px;
                        left: 5px;
                        top: 20px;
                        bottom: auto;
                        word-wrap: break-word;
                        position: fixed;
                    }

                    .error-label {
                        position: fixed;
                        top: 40px; /* malo ispod vrha */
                        left: 50%; /* postavi na sredinu */
                        transform: translateX(-50%); /* poravnaj tačno centar */
                        width: auto;
                        max-width: 350px;
                        word-wrap: break-word;
                        z-index: 9999;
                    }
                }

                    /* Tableti od 769px do 1024px */
                    @media (max-width: 1024px) and (min-width: 769px) {

                        .sidebar {
                            position: relative;
                            width: 96%;
                            height: auto;
                            box-shadow: none;
                            padding: 10px;
                        }

                        .container {
                            padding-left: 0;
                            flex-direction: column;
                            align-items: center;
                        }

                        .div_bill {
                            width: 96%;
                            max-width: 800px;
                            overflow-x: auto;
                        }

                        .tabela_kom {
                            width: 96%;
                            min-width: 700px;
                        }

                        .blue-bar {
                            height: auto; /* automatska visina za tekst */
                            padding: 6px 12px;
                            font-size: 15px; /* malo veći font nego na mobilnom */
                            border-radius: 4px;
                            text-align: center;
                        }

                        .headline {
                            font-size: 15px;
                            text-align: center;
                            margin: 5px 0;
                        }
                    }
                }
            }
        }
    }