:root {
    --color-bg: #faf8f4;
    --color-surface: #ffffff;
    --color-text: #2c2e30;
    --color-muted: #71706a;
    --color-primary: #5c6e4e;
    --color-primary-dark: #47593b;
    --color-primary-light: #eef1e9;
    --color-border: #e6e0d4;
    --color-danger: #b3432b;
    --color-danger-bg: #fbe9e4;
    --color-success: #3f6b3f;
    --color-success-bg: #e9f2e6;
    --radius: 12px;
    --shadow-sm: 0 1px 2px rgba(40, 35, 20, 0.05);
    --shadow-md: 0 6px 20px rgba(40, 35, 20, 0.07);
    --font-heading: Georgia, "Iowan Old Style", "Palatino Linotype", "Times New Roman", serif;
    --font-body: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
[hidden] { display: none; }

body {
    margin: 0;
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--color-primary-dark); }

.site-header {
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
}

.site-header__inner {
    max-width: 880px;
    margin: 0 auto;
    padding: 18px 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
}

.brand { text-decoration: none; display: flex; align-items: center; }
.brand__logo { height: 48px; width: auto; display: block; }
.brand__text {
    font-family: var(--font-heading);
    font-weight: 600;
    color: var(--color-text);
    font-size: 1.25rem;
    letter-spacing: 0.01em;
}

.main-nav { display: flex; gap: 22px; flex-wrap: wrap; align-items: center; }
.main-nav a {
    text-decoration: none;
    color: var(--color-text);
    font-size: 0.88rem;
    font-weight: 600;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    transition: color 0.15s ease;
}
.main-nav a:hover { color: var(--color-primary-dark); }

.site-main {
    max-width: 720px;
    margin: 0 auto;
    padding: 40px 24px 70px;
}
.site-main--admin { max-width: 1100px; }

.site-footer {
    text-align: center;
    color: var(--color-muted);
    font-size: 0.85rem;
    padding: 34px 20px;
    border-top: 1px solid var(--color-border);
    margin-top: 20px;
}

h1 {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 600;
    letter-spacing: -0.01em;
    margin: 0 0 6px;
    color: var(--color-text);
}
h2 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    font-weight: 600;
    margin-top: 2.2em;
    margin-bottom: 0.6em;
    color: var(--color-text);
}
p.lead { color: var(--color-muted); margin-top: 0; }

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
    transition: box-shadow 0.15s ease;
}
.card:hover { box-shadow: var(--shadow-md); }

.card h3 {
    font-family: var(--font-heading);
    font-size: 1.15rem;
    font-weight: 600;
    margin-top: 0;
    margin-bottom: 6px;
}

.form-group { margin-bottom: 16px; }
label { display: block; margin-bottom: 6px; font-weight: 600; font-size: 0.9rem; }
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
input[type="date"],
input[type="time"],
textarea,
select {
    width: 100%;
    padding: 11px 14px;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    background: var(--color-surface);
    color: var(--color-text);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-light);
}
textarea { resize: vertical; min-height: 100px; }

.checkbox-row {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}
.checkbox-row input[type="checkbox"] { margin-top: 4px; width: auto; }
.checkbox-row label { font-weight: 400; margin: 0; }

button, .btn {
    display: inline-block;
    background: var(--color-primary);
    color: #fff;
    border: none;
    padding: 12px 22px;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: background-color 0.15s ease, transform 0.1s ease;
}
button:hover, .btn:hover { background: var(--color-primary-dark); }
button:active, .btn:active { transform: translateY(1px); }
button:disabled { background: var(--color-border); color: var(--color-muted); cursor: not-allowed; transform: none; }

.btn-secondary { background: transparent; color: var(--color-text); border: 1px solid var(--color-border); }
.btn-secondary:hover { background: var(--color-bg); }

.btn-small { padding: 7px 14px; font-size: 0.85rem; }

.flash {
    padding: 14px 18px;
    border-radius: var(--radius);
    margin-bottom: 22px;
    font-size: 0.95rem;
    border: 1px solid transparent;
}
.flash--success { background: var(--color-success-bg); color: var(--color-success); border-color: #cfe3cc; }
.flash--error { background: var(--color-danger-bg); color: var(--color-danger); border-color: #f0cfc4; }

.error-text { color: var(--color-danger); font-size: 0.9rem; margin-top: 4px; }

.badge {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.01em;
}
.badge--open { background: var(--color-success-bg); color: var(--color-success); }
.badge--full { background: var(--color-danger-bg); color: var(--color-danger); }

table { width: 100%; border-collapse: collapse; }
th, td {
    text-align: left;
    padding: 10px 8px;
    border-bottom: 1px solid var(--color-border);
    font-size: 0.95rem;
}
th { color: var(--color-muted); font-weight: 600; }

.policy-box {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    padding: 14px 16px;
    font-size: 0.9rem;
    color: var(--color-muted);
    max-height: 160px;
    overflow-y: auto;
    white-space: pre-wrap;
}

.actions { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 14px; }

.empty-state { color: var(--color-muted); font-style: italic; }

.course-image {
    width: 100%;
    max-height: 420px;
    object-fit: contain;
    border-radius: 8px;
    margin-bottom: 12px;
    display: block;
    background: var(--color-bg);
}
.course-card {
    display: flex;
    align-items: flex-start;
    gap: 18px;
}
.course-card__icon {
    width: 64px;
    height: 64px;
    flex: 0 0 64px;
    object-fit: cover;
    border-radius: 10px;
    display: block;
    background: var(--color-bg);
}
.course-card__body { flex: 1 1 auto; min-width: 0; }
.course-card__body h3 { margin-top: 0; }

.course-meta {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    color: var(--color-muted);
    font-size: 0.9rem;
    margin: 0 0 0.8em;
}

.course-description p { margin: 0 0 0.8em; }
.course-description p:last-child { margin-bottom: 0; }
.course-description h3 { font-size: 1rem; margin: 0.8em 0 0.3em; }
.course-description strong { font-weight: 700; }
.course-description u { text-decoration: underline; }

.trainer-list {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
    margin: 0 0 1.2em;
}
.trainer-list__item { display: flex; align-items: center; gap: 10px; }
.trainer-list__avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    object-fit: cover;
    flex: 0 0 48px;
    background: var(--color-bg);
}
.trainer-list__avatar--placeholder { background: var(--color-primary-light); }
.trainer-list__name { font-weight: 600; font-size: 0.92rem; }
.trainer-list__title { color: var(--color-muted); font-size: 0.82rem; }

.richtext-toolbar { display: flex; gap: 6px; margin-bottom: 6px; }

.field-hint {
    color: var(--color-muted);
    font-size: 0.82rem;
    margin: 6px 0 0;
}
.field-hint code {
    background: var(--color-bg);
    padding: 1px 5px;
    border-radius: 4px;
}

.image-preview { margin-bottom: 10px; }
.image-preview img {
    max-width: 220px;
    max-height: 160px;
    border-radius: 8px;
    border: 1px solid var(--color-border);
    display: block;
}

.tabs__bar {
    display: flex;
    gap: 4px;
    flex-wrap: wrap;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 18px;
}
.tabs__tab {
    background: transparent;
    color: var(--color-muted);
    border: none;
    border-radius: 0;
    padding: 10px 16px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
}
.tabs__tab:hover { background: transparent; color: var(--color-text); }
.tabs__tab--active {
    color: var(--color-primary-dark);
    border-bottom-color: var(--color-primary);
}
.tabs__add {
    background: transparent;
    color: var(--color-primary-dark);
    border: none;
    padding: 10px 16px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
}
.tabs__add:hover { background: var(--color-bg); }

.add-participant {
    margin-top: 16px;
    padding-top: 14px;
    border-top: 1px solid var(--color-border);
}
.add-participant summary {
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--color-primary-dark);
}
.add-participant__form {
    display: flex;
    align-items: flex-end;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 12px;
}
.add-participant__form .form-group { margin-bottom: 0; flex: 1 1 180px; }