/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.6rem 1.25rem;
    border: none;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 600;
    font-family: var(--font);
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
    white-space: nowrap;
}

.btn:active {
    transform: scale(0.97);
}

.btn-primary {
    background: var(--primary);
    color: white;
}

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

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

.btn-secondary:hover {
    background: #d1d5db;
}

.btn-success {
    background: var(--success);
    color: white;
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-outline {
    background: transparent;
    border: 1.5px solid var(--border);
    color: var(--text);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.btn-sm {
    padding: 0.35rem 0.75rem;
    font-size: 0.8rem;
}

.btn-block {
    width: 100%;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Forms */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.3rem;
    color: var(--text);
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1.5px solid var(--border);
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-family: var(--font);
    color: var(--text);
    background: var(--bg-card);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-error {
    background: var(--danger-bg);
    color: var(--danger);
    padding: 0.5rem 0.75rem;
    border-radius: var(--radius);
    font-size: 0.85rem;
    margin-bottom: 1rem;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 1.5rem;
}

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 1.25rem;
    box-shadow: var(--shadow);
}

.card + .card {
    margin-top: 0.75rem;
}

.card-title {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.card-meta {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.card-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 0.75rem;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.1rem 0.5rem;
    border-radius: 99px;
    font-size: 0.7rem;
    font-weight: 700;
    background: var(--danger);
    color: white;
    min-width: 18px;
    justify-content: center;
}

.role-badge {
    display: inline-block;
    padding: 0.15rem 0.6rem;
    border-radius: 99px;
    font-size: 0.75rem;
    font-weight: 600;
    background: var(--primary-light);
    color: var(--primary);
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    padding: 0.2rem 0.6rem;
    border-radius: 99px;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-offen {
    background: var(--warning-bg);
    color: var(--warning);
}

.status-zugesagt {
    background: var(--success-bg);
    color: var(--success);
}

.status-abgesagt {
    background: var(--danger-bg);
    color: var(--danger);
}

.status-eingeladen {
    background: var(--info-bg);
    color: var(--info);
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

.modal-backdrop {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
}

.modal-content {
    position: relative;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    width: 100%;
    max-width: 450px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: modalIn 0.2s ease;
}

.modal-content h2 {
    margin-bottom: 1.25rem;
    font-size: 1.2rem;
}

.modal-close {
    cursor: pointer;
}

@keyframes modalIn {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Toast */
.toast-container {
    position: fixed;
    bottom: 1.5rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 300;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
}

.toast {
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 500;
    color: white;
    box-shadow: var(--shadow-lg);
    animation: toastIn 0.3s ease, toastOut 0.3s ease 3s forwards;
    pointer-events: auto;
}

.toast-success { background: var(--success); }
.toast-error { background: var(--danger); }
.toast-info { background: var(--info); }

@keyframes toastIn {
    from { opacity: 0; transform: translateY(12px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes toastOut {
    to { opacity: 0; transform: translateY(-12px); }
}

/* Loading */
.loading-overlay {
    position: fixed;
    inset: 0;
    z-index: 400;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.8);
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.7s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.empty-state p {
    margin-bottom: 0.5rem;
}

/* Update Banner */
.update-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 500;
    background: var(--primary);
    color: white;
    padding: 0.75rem 1.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    font-size: 0.9rem;
    font-weight: 500;
    box-shadow: 0 -2px 8px rgba(0, 0, 0, 0.15);
    animation: slideUp 0.3s ease;
}

.update-banner .btn {
    background: white;
    color: var(--primary);
}

@keyframes slideUp {
    from { transform: translateY(100%); }
    to { transform: translateY(0); }
}