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

body {
    background-color: #f4f6f8;
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
}

/* ------------------------------------------
   HEADER I NAVIGACIJA
------------------------------------------ */
header {
    background-color: #007bff;
    color: #fff;
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header h1 {
    font-size: 24px;
}

nav a {
    color: #fff;
    text-decoration: none;
    margin-left: 15px;
    font-weight: bold;
    transition: color 0.3s;
}

nav a:hover {
    color: #ffeb3b;
}

/* ------------------------------------------
   FOOTER
------------------------------------------ */
footer {
    background-color: #007bff;
    color: #fff;
    text-align: center;
    padding: 10px;
    position: fixed;
    bottom: 0;
    width: 100%;
}

/* ------------------------------------------
   LOGIN FORM
------------------------------------------ */
.login-container {
    max-width: 400px;
    margin: 80px auto;
    background-color: #fff;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0,0,0,0.1);
}

.login-container h1 {
    margin-bottom: 20px;
    text-align: center;
}

.login-container label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.login-container input[type="text"],
.login-container input[type="password"] {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border-radius: 5px;
    border: 1px solid #ccc;
}

.login-container button {
    width: 100%;
    padding: 12px;
    background-color: #007bff;
    color: #fff;
    border: none;
    font-size: 16px;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.login-container button:hover {
    background-color: #0056b3;
}

/* ------------------------------------------
   GENERAL CONTAINER
------------------------------------------ */
.container {
    max-width: 1200px;
    margin: 80px auto 50px auto;
    padding: 0 20px;
}

/* ------------------------------------------
   DASHBOARD CARDS
------------------------------------------ */
.dashboard-cards {
    display: flex;
    justify-content: space-between;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.card {
    background-color: #fff;
    padding: 20px;
    border-radius: 10px;
    flex: 1;
    margin: 10px;
    box-shadow: 0 0 10px rgba(0,0,0,0.05);
    min-width: 200px;
    text-align: center;
}

.card h2 {
    font-size: 20px;
    margin-bottom: 10px;
}

.card p {
    font-size: 24px;
    font-weight: bold;
    color: #007bff;
}

/* ------------------------------------------
   TABLE STILOVI
------------------------------------------ */
table {
    width: 100%;
    border-collapse: collapse;
    background-color: #fff;
    border-radius: 10px;
    overflow: hidden;
    margin-bottom: 30px;
    box-shadow: 0 0 10px rgba(0,0,0,0.05);
}

table th, table td {
    padding: 12px 15px;
    text-align: left;
}

table th {
    background-color: #007bff;
    color: #fff;
    font-weight: bold;
}

table tr:nth-child(even) {
    background-color: #f9f9f9;
}

table tr:hover {
    background-color: #f1f1f1;
}

/* ------------------------------------------
   FORME ZA UNOS I IZMENU
------------------------------------------ */
form {
    background-color: #fff;
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 30px;
    box-shadow: 0 0 10px rgba(0,0,0,0.05);
}

form label {
    font-weight: bold;
}

form input[type="text"],
form input[type="number"],
form input[type="date"],
form input[type="file"],
form select,
form textarea {
    width: 100%;
    padding: 10px;
    margin-bottom: 15px;
    border-radius: 5px;
    border: 1px solid #ccc;
}

form button {
    padding: 12px 20px;
    background-color: #007bff;
    color: #fff;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

form button:hover {
    background-color: #0056b3;
}

/* ------------------------------------------
   BUTTONS
------------------------------------------ */
.button {
    display: inline-block;
    padding: 10px 15px;
    background-color: #28a745;
    color: #fff;
    border-radius: 5px;
    text-decoration: none;
    font-weight: bold;
    transition: background-color 0.3s;
}

.button:hover {
    background-color: #218838;
}

.button-red {
    background-color: #dc3545;
}

.button-red:hover {
    background-color: #c82333;
}

/* ------------------------------------------
   UPLOAD SECTIONS
------------------------------------------ */
.upload-container {
    background-color: #fff;
    padding: 15px;
    border-radius: 10px;
    margin-bottom: 20px;
    box-shadow: 0 0 10px rgba(0,0,0,0.05);
}

.upload-container label {
    font-weight: bold;
}

.upload-container input[type="file"] {
    display: block;
    margin-top: 10px;
}

/* ------------------------------------------
   MESSAGES / ALERTS
------------------------------------------ */
.message {
    padding: 10px 15px;
    margin-bottom: 20px;
    border-radius: 5px;
}

.message-success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.message-error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* ------------------------------------------
   RESPONSIVE DESIGN
------------------------------------------ */
@media (max-width: 768px) {
    .dashboard-cards {
        flex-direction: column;
    }
    .card {
        margin: 10px 0;
    }
    header {
        flex-direction: column;
        align-items: flex-start;
    }
    nav a {
        margin: 5px 0;
    }
}