:root {
    --admin-text: #edf4ff;
    --admin-muted: #9eb0cb;
}

* {
    box-sizing: border-box;
    font-family: "Trebuchet MS", "Segoe UI", sans-serif;
}

body {
    margin: 0;
    min-height: 100vh;
    background:
        radial-gradient(circle at top left, rgba(37, 99, 235, 0.28), transparent 24%),
        radial-gradient(circle at bottom right, rgba(20, 184, 166, 0.12), transparent 22%),
        linear-gradient(180deg, #040914 0%, #07111f 36%, #09182e 100%);
    color: var(--admin-text);
}

.container {
    max-width: 1180px;
    margin: 32px auto;
    background: linear-gradient(180deg, rgba(10, 18, 36, 0.96) 0%, rgba(8, 17, 34, 0.92) 100%);
    border-radius: 28px;
    padding: 28px;
    box-shadow: 0 30px 90px rgba(2, 6, 23, 0.46);
    border: 1px solid rgba(148, 163, 184, 0.14);
}

h1 {
    margin: 0 0 10px;
    font-size: clamp(32px, 4vw, 44px);
    letter-spacing: -0.04em;
    color: #f8fbff;
}

p {
    color: var(--admin-muted);
    line-height: 1.65;
    margin: 0 0 12px;
}

.topbar,
.toolbar,
.button-group {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.topbar {
    justify-content: flex-end;
    margin-bottom: 20px;
}

.toolbar {
    margin-bottom: 20px;
}

.section-link-row {
    display: flex;
    justify-content: flex-start;
    margin: 4px 0 24px;
}

.button-link,
button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 13px 18px;
    border: none;
    border-radius: 16px;
    font-size: 15px;
    cursor: pointer;
    background: linear-gradient(135deg, #2563eb 0%, #3b82f6 100%);
    color: white;
    font-weight: 800;
    text-decoration: none;
    box-shadow: 0 16px 28px rgba(37, 99, 235, 0.24);
    transition: transform 0.2s ease, filter 0.2s ease, box-shadow 0.2s ease;
}

.button-link:hover,
button:hover {
    transform: translateY(-2px);
    filter: brightness(1.05);
}

.button-secondary {
    background: linear-gradient(135deg, #0f766e 0%, #14b8a6 100%);
    box-shadow: 0 16px 28px rgba(20, 184, 166, 0.18);
}

.danger-button {
    background: linear-gradient(135deg, #b91c1c 0%, #ef4444 100%);
    box-shadow: 0 16px 28px rgba(239, 68, 68, 0.18);
}

.action-group {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

input[type="text"],
input[type="number"],
input[type="datetime-local"] {
    flex: 1;
    min-width: 220px;
    padding: 14px 16px;
    border: 1px solid rgba(96, 165, 250, 0.18);
    border-radius: 16px;
    font-size: 16px;
    background: rgba(6, 12, 24, 0.78);
    color: #f8fbff;
}

select {
    width: 100%;
    max-width: 220px;
    padding: 11px 12px;
    border: 1px solid rgba(96, 165, 250, 0.18);
    border-radius: 14px;
    font-size: 14px;
    background: rgba(6, 12, 24, 0.84);
    color: #f8fbff;
    margin-bottom: 8px;
}

.status {
    padding: 14px 16px;
    border-radius: 16px;
    font-weight: 800;
    margin-bottom: 16px;
    line-height: 1.5;
}

.info {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.14) 0%, rgba(10, 18, 36, 0.9) 100%);
    color: #d9e8ff;
    border: 1px solid rgba(96, 165, 250, 0.24);
}

.success {
    background: linear-gradient(135deg, rgba(34, 197, 94, 0.14) 0%, rgba(11, 24, 28, 0.88) 100%);
    color: #c8ffd9;
    border: 1px solid rgba(74, 222, 128, 0.34);
}

.error {
    background: linear-gradient(135deg, rgba(239, 68, 68, 0.14) 0%, rgba(28, 12, 18, 0.9) 100%);
    color: #ffd4d4;
    border: 1px solid rgba(248, 113, 113, 0.28);
}

.empty-state {
    padding: 18px;
    border: 1px dashed rgba(96, 165, 250, 0.18);
    border-radius: 16px;
    background: rgba(8, 15, 30, 0.68);
    color: var(--admin-muted);
}

.card {
    border: 1px solid rgba(96, 165, 250, 0.12);
    border-radius: 22px;
    padding: 22px;
    background: linear-gradient(180deg, rgba(13, 25, 49, 0.96) 0%, rgba(9, 18, 36, 0.92) 100%);
    margin-top: 18px;
    box-shadow: 0 18px 36px rgba(2, 6, 23, 0.24);
}

.summary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 14px;
    margin-bottom: 20px;
}

.summary-item {
    border: 1px solid rgba(96, 165, 250, 0.12);
    border-radius: 18px;
    padding: 16px;
    background: rgba(7, 16, 31, 0.78);
}

.summary-label {
    display: block;
    font-size: 11px;
    color: #89a2c8;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    margin-bottom: 8px;
    font-weight: 800;
}

.summary-value {
    font-size: 20px;
    font-weight: 900;
    color: #f8fbff;
}

table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    border: 1px solid rgba(96, 165, 250, 0.12);
    border-radius: 22px;
    overflow: hidden;
    margin-bottom: 24px;
    background: rgba(8, 15, 30, 0.72);
}

thead {
    background: linear-gradient(135deg, rgba(16, 33, 65, 0.98) 0%, rgba(13, 25, 49, 0.98) 100%);
}

th,
td {
    padding: 15px 14px;
    text-align: left;
    border-bottom: 1px solid rgba(96, 165, 250, 0.08);
    color: #edf4ff;
    vertical-align: top;
}

th {
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: #8ec5ff;
    white-space: nowrap;
}

td {
    word-break: break-word;
    overflow-wrap: anywhere;
}

#usersBody td[data-label="E-mail"] {
    min-width: 220px;
}

#usersBody td[data-label="Sala"],
#usersBody td[data-label="Status"] {
    min-width: 230px;
}

#challengesBody button[data-action="open-challenge"] {
    width: 100%;
    justify-content: flex-start;
    text-align: left;
    background: transparent;
    box-shadow: none;
    padding: 0;
    color: #edf4ff;
}

#challengesBody button[data-action="open-challenge"]:hover {
    transform: none;
    filter: none;
    text-decoration: underline;
}

.modal-overlay {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: rgba(2, 6, 23, 0.8);
    z-index: 40;
}

.modal-card {
    width: min(100%, 860px);
    max-height: 90vh;
    overflow: auto;
    background: linear-gradient(180deg, rgba(10, 18, 36, 0.98) 0%, rgba(8, 17, 34, 0.96) 100%);
    border-radius: 28px;
    padding: 24px;
    box-shadow: 0 30px 80px rgba(2, 6, 23, 0.5);
    border: 1px solid rgba(96, 165, 250, 0.16);
}

.modal-card-wide {
    width: min(100%, 1120px);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: flex-start;
}

.modal-badge {
    display: inline-flex;
    align-items: center;
    padding: 9px 14px;
    border-radius: 999px;
    background: rgba(59, 130, 246, 0.14);
    border: 1px solid rgba(96, 165, 250, 0.18);
    color: #9fd1ff;
    font-size: 12px;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    margin-bottom: 12px;
}

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

.suspect-simulation-question {
    margin-top: 18px;
}

.suspect-simulation-question h4 {
    margin: 0 0 10px;
    color: #edf4ff;
}

.suspect-simulation-question p {
    color: var(--admin-muted);
    line-height: 1.65;
}

.suspect-option-list {
    display: grid;
    gap: 10px;
    margin-top: 14px;
}

.suspect-option-list button {
    justify-content: flex-start;
    text-align: left;
    white-space: normal;
}

.hidden {
    display: none !important;
}

@media (max-width: 860px) {
    .container {
        margin: 16px;
        padding: 20px;
    }

    .toolbar input,
    .toolbar button,
    .toolbar .button-link {
        width: 100%;
    }

    .modal-card {
        padding: 18px;
    }

    .modal-header {
        flex-direction: column;
    }
}

@media (max-width: 760px) {
    table,
    thead,
    tbody,
    th,
    td,
    tr {
        display: block;
    }

    thead {
        display: none;
    }

    tbody tr {
        border: 1px solid rgba(96, 165, 250, 0.12);
        border-radius: 18px;
        margin-bottom: 14px;
        padding: 10px 0;
        overflow: hidden;
        background: rgba(8, 15, 30, 0.72);
    }

    td {
        border-bottom: none;
        padding: 10px 12px;
    }

    td::before {
        content: attr(data-label);
        display: block;
        font-size: 11px;
        font-weight: 800;
        color: #8ea5c9;
        text-transform: uppercase;
        letter-spacing: 0.12em;
        margin-bottom: 4px;
    }

    select {
        max-width: none;
    }

    .action-group,
    .button-group,
    .topbar {
        width: 100%;
    }

    .action-group button,
    .topbar .button-link,
    .topbar button {
        width: 100%;
    }
}