/* ============================================
   ENERGYM - Gruppenkurse-Modal
   Ergänzt style.css (Tokens, Buttons, .form-group)
   ============================================ */

.gk-modal-backdrop {
    position: fixed;
    inset: 0;
    z-index: 1000;
    /* Volldeckender, dunkler Overlay — kein backdrop-filter (verursachte
       Flackern, sobald sich im Hintergrund etwas animierte). */
    background: rgba(8, 8, 8, 0.96);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding: 40px 20px;
    overflow-y: auto;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.gk-modal-backdrop.open {
    opacity: 1;
    visibility: visible;
}

.gk-modal {
    position: relative;
    width: 100%;
    max-width: 940px;
    background: var(--color-bg-light);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 48px 44px;
    transform: translateY(24px);
    transition: transform 0.3s ease;
}

.gk-modal-backdrop.open .gk-modal {
    transform: translateY(0);
}

.gk-modal-close {
    position: absolute;
    top: 18px;
    right: 18px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    color: var(--color-text);
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s;
    z-index: 2;
}
.gk-modal-close svg { width: 18px; height: 18px; }
.gk-modal-close:hover { border-color: var(--color-accent); color: var(--color-accent); }

.gk-modal-head {
    text-align: center;
    margin-bottom: 36px;
}
.gk-modal-head .section-label { justify-content: center; }
.gk-modal-head .section-title {
    margin: 14px 0 0;
    font-size: clamp(2rem, 4.5vw, 2.9rem);
    line-height: 1.1;
}
.gk-modal-head p {
    color: var(--color-text-secondary);
    margin-top: 14px;
}

/* ---------- Kurskarten ---------- */
.gk-course-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin-bottom: 40px;
}

.gk-course-card {
    display: flex;
    flex-direction: column;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 18px 18px 20px;
    text-align: left;
    cursor: pointer;
    font-family: inherit;
    color: var(--color-text);
    transition: border-color 0.2s, transform 0.2s;
}
.gk-course-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-3px);
}

.gk-course-card-time {
    font-size: 0.78rem;
    font-weight: 700;
    color: var(--color-accent);
}

.gk-course-card h4 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text);
    margin: 4px 0 6px;
}

.gk-course-card-desc {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
    line-height: 1.55;
}

.gk-course-card-trainer {
    font-size: 0.76rem;
    color: var(--color-text-secondary);
    margin-top: 8px;
}

.gk-empty {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--color-text-tertiary);
    padding: 30px;
}

/* ---------- Anmeldung ---------- */
.gk-signup {
    max-width: 540px;
    margin: 0 auto;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 28px;
}
.gk-signup h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 18px;
    text-align: center;
}

.gk-form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
}

.gk-form-success { text-align: center; padding: 24px 0; }
.gk-form-success svg {
    width: 52px; height: 52px;
    color: var(--color-accent);
    margin-bottom: 12px;
}
.gk-form-success h3 { font-size: 1.3rem; margin-bottom: 8px; }
.gk-form-success p { color: var(--color-text-secondary); }

.gk-form-error {
    color: #e05555;
    font-size: 0.85rem;
    margin-top: 10px;
    text-align: center;
}

/* ---------- Admin-Link ---------- */
.gk-admin-link {
    display: block;
    margin: 26px auto 0;
    background: none;
    border: none;
    color: var(--color-text-tertiary);
    font-size: 0.82rem;
    font-family: inherit;
    cursor: pointer;
    text-decoration: underline;
    transition: color 0.2s;
}
.gk-admin-link:hover { color: var(--color-accent); }

/* ---------- Admin-Bereich ---------- */
.gk-login { max-width: 340px; margin: 0 auto; }

.gk-field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 14px;
}
.gk-field label {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-text-secondary);
}
.gk-field label em {
    font-style: normal;
    color: var(--color-text-tertiary);
    font-weight: 500;
}
.gk-field input,
.gk-field textarea,
.gk-field select {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 11px 13px;
    color: var(--color-text);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color 0.2s;
}
.gk-field input:focus,
.gk-field textarea:focus,
.gk-field select:focus {
    outline: none;
    border-color: var(--color-accent);
}

.gk-admin-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 24px;
}
.gk-admin-row {
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
}
.gk-admin-row-info { flex: 1; min-width: 0; }
.gk-admin-row-info strong { font-size: 0.9rem; display: block; }
.gk-admin-row-info span { font-size: 0.78rem; color: var(--color-text-tertiary); }
.gk-admin-row-actions { display: flex; gap: 6px; flex-shrink: 0; }

.gk-icon-btn {
    width: 32px; height: 32px;
    display: flex; align-items: center; justify-content: center;
    background: none;
    border: 1px solid var(--color-border);
    border-radius: 7px;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: border-color 0.2s, color 0.2s;
}
.gk-icon-btn svg { width: 15px; height: 15px; }
.gk-icon-btn:hover { border-color: var(--color-accent); color: var(--color-accent); }
.gk-icon-btn.gk-del:hover { border-color: #e05555; color: #e05555; }

.gk-admin-form {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 24px;
}
.gk-admin-form h3 { font-size: 1.05rem; font-weight: 700; margin-bottom: 16px; }

.gk-admin-actions { display: flex; gap: 10px; margin-top: 8px; }

.gk-admin-footer {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    align-items: center;
    justify-content: space-between;
    margin-top: 22px;
}

.gk-admin-note {
    font-size: 0.78rem;
    color: var(--color-text-tertiary);
    margin-top: 14px;
    line-height: 1.55;
}

/* ---------- Responsive ---------- */
@media (max-width: 720px) {
    .gk-modal { padding: 44px 22px; }
    .gk-course-grid { grid-template-columns: 1fr 1fr; }
    .gk-form-row { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
    .gk-course-grid { grid-template-columns: 1fr; }
    .gk-modal { padding: 40px 16px; }
}