* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: #1a1a1a;
    color: #e0e0e0;
    line-height: 1.6;
}

nav {
    background-color: #2d2d2d;
    border-bottom: 2px solid #ffffff;
    padding: 1rem 0;
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

nav h1 {
    color: #ffffff;
    font-size: 1.3rem;
    font-weight: 800;
    letter-spacing: 2px;
}

.nav-user-logo {
    height: 36px;
    width: auto;
    border-radius: 4px;
    object-fit: contain;
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    color: #e0e0e0;
    text-decoration: none;
    transition: color 0.3s;
}

nav a:hover {
    color: #ffffff;
}

main {
    max-width: 1400px;
    margin: 2rem auto;
    padding: 0 2rem;
}

.container {
    background-color: #2d2d2d;
    border-radius: 8px;
    padding: 2rem;
}

h2 {
    color: #ffffff;
    margin-bottom: 1.5rem;
}

h3 {
    color: #ffffff;
    margin-bottom: 1rem;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.card {
    background-color: #3a3a3a;
    border-radius: 8px;
    padding: 2rem;
    border: 1px solid #4a4a4a;
}

.card h3 {
    margin-bottom: 1rem;
}

.card p {
    margin-bottom: 1.5rem;
    color: #b0b0b0;
}

.btn {
    display: inline-block;
    background-color: #ffffff;
    color: #1a1a1a;
    padding: 0.5rem 1.5rem;
    border-radius: 4px;
    text-decoration: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s;
}

.btn:hover {
    background-color: #e0e0e0;
}

.btn-view {
    display: inline-block;
    background-color: #2196F3;
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 4px;
    text-decoration: none;
    font-size: 0.9rem;
    margin-right: 0.5rem;
    transition: background-color 0.3s;
}

.btn-view:hover {
    background-color: #1976D2;
}

.btn-delete {
    background-color: #f44336;
    color: white;
    padding: 0.4rem 1rem;
    border-radius: 4px;
    border: none;
    cursor: pointer;
    font-size: 0.9rem;
    transition: background-color 0.3s;
}

.btn-delete:hover {
    background-color: #da190b;
}

.form-section {
    background-color: #3a3a3a;
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

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

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    color: #b0b0b0;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    background-color: #2d2d2d;
    color: #e0e0e0;
    border: 1px solid #4a4a4a;
    border-radius: 4px;
    padding: 0.5rem;
    font-size: 1rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #ffffff;
}

fieldset {
    border: 1px solid #4a4a4a;
    border-radius: 4px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

legend {
    color: #ffffff;
    padding: 0 0.5rem;
    font-weight: bold;
}

.checkbox-group {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #e0e0e0;
}

.checkbox-group input[type="checkbox"] {
    width: 18px;
    height: 18px;
}

.table-section {
    margin-top: 2rem;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
    background-color: #3a3a3a;
}

table thead {
    background-color: #4a4a4a;
}

table th,
table td {
    padding: 0.75rem;
    text-align: left;
    border-bottom: 1px solid #4a4a4a;
}

table th {
    color: #ffffff;
    font-weight: 600;
}

table td {
    color: #e0e0e0;
}

table tr:hover {
    background-color: #424242;
}

.request-info,
.constraints-info,
.weights-info {
    background-color: #3a3a3a;
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.gates {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.gate {
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-weight: bold;
}

.gate-on {
    background-color: #ffffff;
    color: #1a1a1a;
}

.gate-off {
    background-color: #757575;
    color: white;
}

.weights {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    margin-top: 1rem;
}

.weights span {
    background-color: #2d2d2d;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    border: 1px solid #4a4a4a;
}

.matches-section {
    margin-top: 2rem;
}

.score {
    font-weight: bold;
    color: #ffffff;
    font-size: 1.2rem;
}

.reasons {
    font-size: 0.9rem;
    color: #b0b0b0;
}

.no-matches {
    color: #ff9800;
    padding: 2rem;
    text-align: center;
    background-color: #3a3a3a;
    border-radius: 8px;
    margin-top: 1rem;
}

.error {
    background-color: #f44336;
    color: white;
    padding: 1rem;
    border-radius: 4px;
    margin-bottom: 1rem;
}

.actions {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid #4a4a4a;
}

.home-logo {
    display: block;
    margin: 0 auto 2rem auto;
    max-width: 350px;
    max-height: 220px;
    width: auto;
    height: auto;
    object-fit: contain;
    border-radius: 8px;
    background: #fff;
    padding: 12px;
    box-sizing: border-box;
}

/* ============================================================
   MOBILE / RESPONSIVE FOUNDATION
   ============================================================ */
.nav-toggle {
    display: none !important;
    background: none;
    border: 1px solid #4a4a4a;
    color: #fff;
    font-size: 22px;
    line-height: 1;
    padding: 6px 12px;
    border-radius: 4px;
    cursor: pointer;
}
.nav-toggle:focus { outline: 2px solid #fff; }

img, video { max-width: 100%; height: auto; }
.btn, .btn-view, .btn-delete, button, input[type="submit"] { min-height: 38px; }

/* Tablet */
@media (max-width: 1024px) {
    main { margin: 1.25rem auto; padding: 0 1rem; }
    .nav-container { padding: 0 1rem; }
    .container { padding: 1.25rem; }
    .form-section { padding: 1.25rem; }
    nav ul { gap: 1rem; }
    nav h1 { font-size: 1.1rem; letter-spacing: 4px !important; }
}

/* Phones */
@media (max-width: 768px) {
    body { line-height: 1.5; }
    nav { padding: 0.6rem 0; }
    .nav-container { flex-wrap: wrap; gap: 8px; }
    .nav-brand h1 { font-size: 1rem !important; letter-spacing: 3px !important; }
    .nav-toggle { display: inline-block !important; }
    nav ul {
        display: none;
        flex-direction: column;
        width: 100%;
        gap: 0;
        margin-top: 8px;
        background: #232323;
        border-radius: 6px;
        padding: 6px 0;
    }
    nav ul.open { display: flex; }
    nav ul li { width: 100%; }
    nav ul li a {
        display: block;
        padding: 12px 16px;
        border-bottom: 1px solid #333;
        font-size: 15px;
    }
    nav ul li:last-child a { border-bottom: none; }

    main { margin: 0.75rem auto; padding: 0 0.6rem; }
    .container, .form-section, .request-info, .constraints-info, .weights-info,
    .card { padding: 1rem; border-radius: 6px; }
    h2 { font-size: 1.25rem; margin-bottom: 1rem; }
    h3 { font-size: 1.05rem; margin-bottom: 0.75rem; }

    .card-grid { grid-template-columns: 1fr; gap: 1rem; margin-top: 1rem; }
    .form-grid, .info-grid { grid-template-columns: 1fr; gap: 0.75rem; }
    .checkbox-group { gap: 1rem; }

    .form-group input, .form-group select, .form-group textarea {
        font-size: 16px; /* prevent iOS zoom */
        padding: 0.6rem;
    }

    .btn, .btn-view, .btn-delete, button, input[type="submit"] {
        padding: 0.55rem 0.9rem;
        font-size: 0.95rem;
    }

    /* Default: tables become horizontally scrollable */
    .table-section, .table-wrap { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    table { font-size: 13px; }
    table th, table td { padding: 0.5rem; }

    /* Opt-in: tables marked .stack-mobile turn into card layout */
    table.stack-mobile, table.stack-mobile thead, table.stack-mobile tbody,
    table.stack-mobile tr, table.stack-mobile th, table.stack-mobile td {
        display: block;
        width: 100%;
    }
    table.stack-mobile thead { display: none; }
    table.stack-mobile tr {
        background: #3a3a3a;
        border: 1px solid #4a4a4a;
        border-radius: 6px;
        margin-bottom: 10px;
        padding: 8px 10px;
    }
    table.stack-mobile td {
        border: none;
        padding: 6px 0;
        text-align: left !important;
        display: flex;
        justify-content: space-between;
        gap: 12px;
        align-items: flex-start;
    }
    table.stack-mobile td::before {
        content: attr(data-label);
        font-weight: 600;
        color: #b0b0b0;
        font-size: 12px;
        text-transform: uppercase;
        letter-spacing: 0.5px;
        flex-shrink: 0;
    }
    table.stack-mobile td:not([data-label])::before { content: ""; }
    table.stack-mobile td.actions-cell, table.stack-mobile td[data-label=""] {
        display: block;
        border-top: 1px solid #4a4a4a;
        margin-top: 6px;
        padding-top: 8px;
    }

    .gates, .weights { gap: 0.5rem; }
    .gate, .weights span { font-size: 12px; padding: 0.4rem 0.7rem; }

    .home-logo { max-width: 220px; margin-bottom: 1rem; }

    /* Generic horizontal-scroll wrapper helpers */
    .filters, .filter-row { flex-wrap: wrap !important; gap: 0.5rem !important; }
}

/* Very small phones */
@media (max-width: 380px) {
    .nav-brand h1 { font-size: 0.85rem !important; letter-spacing: 2px !important; }
    main { padding: 0 0.4rem; }
    .container, .form-section { padding: 0.75rem; }
}

@media (max-width: 768px) {
    .player-dash-grid { grid-template-columns: 1fr !important; gap: 14px !important; }
    .player-dash-grid > div:first-child { max-width: 200px; margin: 0 auto; }
}