:root {
    --bg: #f5f7fb;
    --surface: #ffffff;
    --text: #18212f;
    --muted: #647084;
    --border: #dbe2ee;
    --primary: #1565c0;
    --primary-dark: #0d47a1;
    --danger: #b3261e;
    --success: #146c43;
    --shadow: 0 12px 32px rgba(24, 33, 47, 0.08);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--text);
    background: var(--bg);
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.5;
}

a {
    color: inherit;
    text-decoration: none;
}

.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    padding: 18px clamp(18px, 4vw, 56px);
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 10;
}

.brand {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--primary-dark);
}

.nav {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
}

.nav a {
    padding: 8px 10px;
    border-radius: 6px;
    color: var(--muted);
    font-weight: 600;
}

.nav a:hover {
    color: var(--primary);
    background: #eef5ff;
}

.nav span {
    display: inline-grid;
    place-items: center;
    min-width: 20px;
    height: 20px;
    margin-left: 4px;
    border-radius: 999px;
    background: var(--primary);
    color: #fff;
    font-size: 0.75rem;
}

.container {
    width: min(1120px, calc(100% - 32px));
    margin: 34px auto 48px;
}

.site-footer {
    padding: 18px;
    text-align: center;
    color: var(--muted);
    border-top: 1px solid var(--border);
}

h1,
h2 {
    margin: 0 0 10px;
    line-height: 1.2;
}

h1 {
    font-size: clamp(1.6rem, 3vw, 2.25rem);
}

h2 {
    font-size: 1.15rem;
}

.muted {
    margin: 0;
    color: var(--muted);
}

.panel,
.event-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.panel {
    padding: 24px;
}

.narrow {
    max-width: 720px;
    margin: 0 auto;
}

.toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    margin-bottom: 22px;
}

.event-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 18px;
}

.event-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: 18px;
    padding: 20px;
}

.meta {
    display: grid;
    gap: 10px;
    margin: 0;
}

.meta div {
    display: flex;
    justify-content: space-between;
    gap: 14px;
    border-bottom: 1px solid var(--border);
    padding-bottom: 8px;
}

.meta dt {
    color: var(--muted);
    font-weight: 700;
}

.meta dd {
    margin: 0;
    text-align: right;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-top: 20px;
}

label {
    display: grid;
    gap: 6px;
    font-weight: 700;
}

input,
select,
textarea {
    width: 100%;
    padding: 11px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: #fff;
    color: var(--text);
    font: inherit;
}

textarea {
    resize: vertical;
}

input:focus,
select:focus,
textarea:focus {
    outline: 3px solid #cfe2ff;
    border-color: var(--primary);
}

.span-2,
.full {
    grid-column: 1 / -1;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    padding: 10px 14px;
    border: 1px solid transparent;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 700;
    font-size: 0.95rem;
}

.btn:disabled {
    cursor: not-allowed;
    opacity: 0.65;
}

.primary {
    background: var(--primary);
    color: #fff;
}

.primary:hover {
    background: var(--primary-dark);
}

.secondary {
    background: #eef2f7;
    color: var(--text);
    border-color: var(--border);
}

.danger {
    background: #fff2f1;
    color: var(--danger);
    border-color: #f1c5c1;
}

.alert {
    margin-bottom: 16px;
    padding: 12px 14px;
    border-radius: 6px;
    border: 1px solid;
    font-weight: 600;
}

.alert p {
    margin: 0 0 6px;
}

.alert p:last-child {
    margin-bottom: 0;
}

.erreur {
    background: #fff2f1;
    color: var(--danger);
    border-color: #f1c5c1;
}

.succes {
    background: #eaf7ef;
    color: var(--success);
    border-color: #bfe4cc;
}

.table-wrap {
    overflow-x: auto;
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 720px;
}

th,
td {
    padding: 13px 12px;
    border-bottom: 1px solid var(--border);
    text-align: left;
    vertical-align: middle;
}

th {
    color: var(--muted);
    font-size: 0.85rem;
    text-transform: uppercase;
}

tfoot th {
    color: var(--text);
    font-size: 1rem;
}

.actions,
.form-actions {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.confirm-form {
    display: flex;
    justify-content: flex-end;
    margin-top: 18px;
}

@media (max-width: 760px) {
    .site-header,
    .toolbar {
        align-items: flex-start;
        flex-direction: column;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .panel {
        padding: 18px;
    }
}