.master-area {
    --master-sidebar-width: 250px;
    --master-black: #111;
    --master-muted: #6b7280;
    --master-border: #e5e7eb;
    --master-surface: #fff;
}

.master-sidebar {
    position: fixed;
    top: 70px;
    bottom: 0;
    left: 0;
    z-index: 900;
    width: var(--master-sidebar-width);
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    padding: 26px 18px 20px;
    overflow-y: auto;
    color: #fff;
    background: var(--master-black);
    border-top: 1px solid #292929;
}

.master-sidebar-heading {
    display: grid;
    gap: 5px;
    padding: 0 12px 22px;
}

.master-sidebar-heading strong { font-size: 20px; }
.master-eyebrow {
    color: #a3a3a3;
    font-size: 11px;
    letter-spacing: .13em;
    text-transform: uppercase;
}

.master-nav {
    display: grid;
    gap: 5px;
}

.master-nav a {
    display: block;
    padding: 11px 13px;
    color: #d4d4d4;
    border-radius: 7px;
    text-decoration: none;
    font-size: 14px;
    font-weight: 600;
}

.master-nav a:hover,
.master-nav a.active {
    color: #111;
    background: #fff;
}

.master-sidebar-logout {
    margin-top: auto;
    padding-top: 22px;
}

.master-sidebar-logout button {
    width: 100%;
    padding: 10px 13px;
    color: #fff;
    background: transparent;
    border: 1px solid #444;
    border-radius: 7px;
    cursor: pointer;
    font: inherit;
    font-weight: 600;
}

.master-sidebar-logout button:hover { background: #262626; }

.master-main {
    margin-left: var(--master-sidebar-width);
    min-height: calc(100vh - 70px);
    padding: 30px clamp(18px, 3vw, 42px);
    background: #f5f5f5;
}

.master-menu-toggle { display: none; }

.master-page-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 24px;
}

.master-page-header h1,
.master-page-header h2 { margin: 0 0 6px; }
.master-page-header p { margin: 0; color: var(--master-muted); }
.master-eyebrow-dark { color: #737373; }

.master-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 16px;
    margin-bottom: 26px;
}

.master-card,
.master-panel {
    background: var(--master-surface);
    border: 1px solid var(--master-border);
    border-radius: 12px;
    box-shadow: 0 3px 14px rgba(0, 0, 0, .05);
}

.master-card { padding: 20px; }
.master-card span { display: block; color: var(--master-muted); font-size: 13px; }
.master-card strong { display: block; margin-top: 8px; font-size: 28px; }
.master-panel { padding: 22px; }

.master-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.master-button,
.master-actions a,
.master-actions button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 10px 14px;
    color: #fff;
    background: #222;
    border: 1px solid #222;
    border-radius: 7px;
    text-decoration: none;
    font-size: 14px;
    font-family: inherit;
    line-height: 1.2;
    cursor: pointer;
}

.master-actions form { margin: 0; }
.master-button-secondary { color: #262626 !important; background: #fff !important; border-color: #d4d4d4 !important; }
.master-button-danger { color: #fff !important; background: #b42318 !important; border-color: #b42318 !important; }
.master-button-danger-outline { color: #b42318 !important; background: #fff !important; border-color: #f0b4ae !important; }
.master-button-danger-outline:hover { color: #fff !important; background: #b42318 !important; border-color: #b42318 !important; }
.master-actions-compact { gap: 7px; }
.master-actions-compact .master-button { padding: 8px 10px; font-size: 13px; }
.master-section-heading, .master-bracket-heading, .master-inscritos-card { display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.master-section-heading { margin-bottom: 18px; }
.master-section-heading h2, .master-bracket-heading h2, .master-inscritos-card h2 { margin: 0 0 4px; }
.master-section-heading p { margin: 0; color: var(--master-muted); }
.master-table-wrap { width: 100%; overflow-x: auto; }
.master-table { width: 100%; border-collapse: collapse; }
.master-table th { padding: 11px 12px; color: #525252; background: #fafafa; border-bottom: 1px solid var(--master-border); text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .04em; }
.master-table td { padding: 14px 12px; border-bottom: 1px solid var(--master-border); vertical-align: middle; }
.master-table tbody tr:last-child td { border-bottom: 0; }
.master-table td small { display: block; margin-top: 3px; color: var(--master-muted); }
.master-empty-state { padding: 26px; color: var(--master-muted); text-align: center; }
.master-muted { color: var(--master-muted); }
.master-event-manager { display: grid; }
.master-event-row { display: grid; grid-template-columns: minmax(170px, 1.1fr) minmax(220px, 1fr) minmax(340px, auto); align-items: center; gap: 22px; padding: 18px 4px; border-bottom: 1px solid var(--master-border); }
.master-event-row:last-child { border-bottom: 0; }
.master-event-identity strong { display: block; font-size: 15px; }
.master-event-identity small { color: var(--master-muted); }
.master-event-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.master-event-meta span { font-size: 14px; }
.master-event-meta small { display: block; margin-bottom: 4px; color: var(--master-muted); font-size: 11px; text-transform: uppercase; letter-spacing: .04em; }
.master-event-controls { position: relative; display: flex; align-items: center; justify-content: flex-end; gap: 8px; }
.master-delete-event-form { margin: 0; }
.master-more-actions { position: relative; flex: 0 0 auto; }
.master-more-actions summary { display: flex; align-items: center; gap: 6px; padding: 8px 10px; border: 1px solid #d4d4d4; border-radius: 7px; cursor: pointer; font-size: 13px; list-style: none; white-space: nowrap; }
.master-more-actions summary::-webkit-details-marker { display: none; }
.master-more-actions[open] summary { color: #fff; background: #333; border-color: #333; }
.master-more-menu { position: absolute; top: calc(100% + 8px); right: 0; z-index: 50; width: 210px; padding: 7px; background: #fff; border: 1px solid var(--master-border); border-radius: 10px; box-shadow: 0 14px 32px rgba(0,0,0,.16); }
.master-more-links { display: grid; gap: 2px; }
.master-more-menu a, .master-file-action, .master-danger-link { display: block; box-sizing: border-box; padding: 8px 10px; color: #262626; background: transparent; border: 0; border-radius: 6px; text-align: left; text-decoration: none; font: inherit; font-size: 13px; cursor: pointer; }
.master-more-menu a:hover, .master-file-action:hover { background: #eee; }
.master-more-danger { margin-top: 5px; padding-top: 5px; border-top: 1px solid var(--master-border); }
.master-danger-link { color: #b42318; }
.master-file-action input, .master-file-button input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.master-brackets-grid, .master-inscritos-list { display: grid; gap: 16px; }
.master-bracket-heading small, .master-inscritos-card span { color: var(--master-muted); }
.master-bracket-card .master-actions { margin-top: 20px; }
.master-badge { display: inline-flex; padding: 5px 9px; border-radius: 999px; font-size: 12px; font-weight: 700; }
.master-badge-success { color: #166534; background: #dcfce7; }
.master-badge-warning { color: #92400e; background: #fef3c7; }
.master-badge-neutral { color: #525252; background: #f1f5f9; }
.master-inscritos-action { display: flex; align-items: center; gap: 18px; }
.master-count strong { color: #171717; font-size: 20px; }
.master-event-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.master-event-tags span { padding: 5px 8px; background: #f5f5f5; border-radius: 6px; font-size: 12px; }
.master-area .container-academias { max-width: none; margin: 0; box-shadow: 0 3px 14px rgba(0,0,0,.05); }
.master-area .container-academias h2, .master-area .container-academias h3 { text-align: left; }

@media (max-width: 1180px) and (min-width: 769px) {
    .master-event-row { grid-template-columns: minmax(170px, 1fr) minmax(260px, 1fr); }
    .master-event-controls { grid-column: 1 / -1; justify-content: flex-start; }
}

@media (max-width: 768px) {
    .master-menu-toggle {
        display: block;
        position: fixed;
        right: 16px;
        bottom: 16px;
        z-index: 1100;
        padding: 11px 15px;
        color: #fff;
        background: #111;
        border: 0;
        border-radius: 24px;
        box-shadow: 0 4px 18px rgba(0, 0, 0, .24);
        font: inherit;
        font-size: 13px;
    }

    .master-sidebar {
        top: 0;
        z-index: 1050;
        width: min(82vw, 290px);
        padding-top: 30px;
        transform: translateX(-105%);
        transition: transform .2s ease;
    }

    .master-sidebar.is-open { transform: translateX(0); }
    .master-main { margin-left: 0; padding: 22px 14px 80px; }
    .master-page-header { display: block; }
    .master-page-header > .master-button { margin-top: 14px; }
    .master-section-heading, .master-bracket-heading, .master-inscritos-card { align-items: flex-start; flex-direction: column; }
    .master-inscritos-action { width: 100%; justify-content: space-between; }
    .master-table, .master-table tbody, .master-table tr, .master-table td { display: block; width: 100%; box-sizing: border-box; }
    .master-table thead { display: none; }
    .master-table tr { padding: 10px 0; border-bottom: 1px solid var(--master-border); }
    .master-table td { display: grid; grid-template-columns: minmax(105px, .45fr) 1fr; gap: 12px; border: 0; padding: 8px 4px; }
    .master-table td::before { content: attr(data-label); color: var(--master-muted); font-size: 12px; font-weight: 700; }
    .master-table td[colspan] { display: block; }
    .master-event-row { grid-template-columns: 1fr; gap: 14px; padding: 20px 4px; }
    .master-event-controls { align-items: stretch; flex-direction: column; }
    .master-delete-event-form .master-button { width: 100%; }
    .master-event-primary-actions { display: grid; grid-template-columns: 1fr 1fr; }
    .master-more-actions summary { justify-content: center; width: auto; }
    .master-more-menu { position: static; width: auto; margin-top: 8px; box-shadow: none; }
    .master-more-links { grid-template-columns: 1fr 1fr; }
    .master-area .container-academias { padding: 22px 16px; }
}