/* ================= RESET ================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Segoe UI", sans-serif;
}

/* ================= BODY ================= */
body {
    background-color: #f4f7f6;
}

/* ================= MAIN CONTENT ================= */
.main {
    margin-left: 260px;
    padding: 30px;
    width: calc(100% - 260px);
    margin-top: 80px;
    transition: 0.3s;
}

/* ================= CONTAINER ================= */
.container {
    max-width: 1200px;
    width: 100%;
    margin: auto;
    background: #ffffff;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.1);
}

/* ================= HEADING ================= */
.container h2 {
    text-align: center;
    margin-bottom: 20px;
    color: #003366;
    font-weight: 600;
}

/* ================= BUTTONS ================= */
.btn {
    padding: 8px 14px;
    border-radius: 6px;
    color: #ffffff;
    border: none;
    cursor: pointer;
    font-size: 14px;
    font-weight: 600;
    text-decoration: none;
}

.btn-add {
    background-color: #28a745;
}

.btn-update {
    background-color: #007bff;
}

.btn-delete {
    background-color: #dc3545;
}

.btn:hover {
    opacity: 0.9;
}

/* ================= NO RECORD ================= */
.no-record {
    text-align: center;
    font-size: 16px;
    margin-top: 20px;
    color: #555;
    padding: 15px;
    background: #f9f9f9;
    border-radius: 8px;
    border: 1px solid #e0e0e0;
}

/* ================= TABLE ================= */
.table-wrapper {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
    min-width: 900px;
    /* allows horizontal scroll on mobile */
}

th,
td {
    padding: 12px;
    border: 1px solid #dee2e6;
    white-space: nowrap;
    font-size: 14px;
}

th {
    background-color: #007bff;
    color: white;
    text-align: center;
}

td {
    text-align: right;
}

td:first-child,
th:first-child {
    text-align: left;
}

tr:nth-child(even) {
    background-color: #f0f8ff;
}

/* ================= ACTION COLUMN ================= */
.action-cell {
    display: flex;
    gap: 6px;
    justify-content: center;
}

.action-cell form {
    margin: 0;
}

/* ================= TABLET ================= */
@media (max-width: 992px) {

    .main {
        margin-left: 0;
        width: 100%;
        padding: 20px;
    }

    .container {
        padding: 20px;
    }

    table {
        min-width: 800px;
    }
}

/* ================= MOBILE ================= */
@media (max-width: 768px) {

    .container {
        padding: 15px;
    }

    .container h2 {
        font-size: 18px;
    }

    .btn {
        font-size: 13px;
        padding: 7px 12px;
    }

    table {
        min-width: 700px;
    }
}

/* ================= SMALL MOBILE ================= */
@media (max-width: 480px) {

    .container h2 {
        font-size: 16px;
    }

    .btn-add {
        width: 100%;
        text-align: center;
        margin-bottom: 15px;
        display: block;
    }

    table {
        min-width: 650px;
    }
}