/* ==========================================
   KNOPPEN
   ========================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    min-height: var(--btn-min-height);
    padding: var(--btn-padding);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: var(--card-radius);
    cursor: pointer;
    transition: all var(--transition-normal);
    -webkit-appearance: none;
    appearance: none;
    touch-action: manipulation;
    user-select: none;
}

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

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

.btn--primary:hover,
.btn--primary:focus-visible {
    background-color: var(--color-primary-light);
    color: var(--color-white);
    text-decoration: none;
}

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

.btn--accent:hover,
.btn--accent:focus-visible {
    background-color: var(--color-accent-dark);
    text-decoration: none;
}

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

.btn--whatsapp:hover,
.btn--whatsapp:focus-visible {
    background-color: var(--color-whatsapp-dark);
    color: var(--color-white);
    text-decoration: none;
}

.btn--outline {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn--outline:hover,
.btn--outline:focus-visible {
    background-color: var(--color-primary);
    color: var(--color-white);
    text-decoration: none;
}

.btn--full {
    width: 100%;
}

.btn--lg {
    min-height: 64px;
    font-size: var(--font-size-lg);
    padding: 18px 36px;
}

.btn__icon {
    width: 24px;
    height: 24px;
    flex-shrink: 0;
}

.btn--lg .btn__icon {
    width: 28px;
    height: 28px;
}

/* ==========================================
   KAARTEN
   ========================================== */

.card {
    background-color: var(--color-white);
    border-radius: var(--card-radius);
    padding: var(--card-padding);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-normal);
}

.card:hover {
    box-shadow: var(--shadow-md);
}

.card--link {
    display: block;
    text-decoration: none;
    color: inherit;
    cursor: pointer;
}

.card--link:hover {
    text-decoration: none;
    color: inherit;
}

.card__title {
    font-size: var(--font-size-lg);
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.card__text {
    font-size: var(--font-size-base);
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

.card__icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-sm);
}

/* Dashboard tiles */
.tile {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 140px;
    padding: var(--spacing-lg);
    background-color: var(--color-white);
    border-radius: var(--card-radius);
    box-shadow: var(--shadow-sm);
    text-decoration: none;
    color: var(--color-primary);
    transition: all var(--transition-normal);
    border: 2px solid transparent;
}

.tile:hover,
.tile:focus-visible {
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
    text-decoration: none;
    color: var(--color-primary);
    transform: translateY(-2px);
}

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

.tile__icon {
    width: 48px;
    height: 48px;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
}

.tile__label {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    line-height: 1.3;
}

/* ==========================================
   FORMULIEREN
   ========================================== */

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-label {
    display: block;
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
    margin-bottom: var(--spacing-xs);
}

.form-input {
    width: 100%;
    min-height: var(--btn-min-height);
    padding: var(--spacing-md);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background-color: var(--color-white);
    border: 2px solid var(--color-border);
    border-radius: var(--card-radius);
    transition: border-color var(--transition-fast);
    -webkit-appearance: none;
    appearance: none;
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(21, 62, 53, 0.15);
}

.form-input::placeholder {
    color: #999;
}

.form-error {
    font-size: var(--font-size-sm);
    color: var(--color-error);
    margin-top: var(--spacing-xs);
}

.form-help {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    margin-top: var(--spacing-xs);
}

/* ==========================================
   MELDINGEN
   ========================================== */

.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--card-radius);
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-lg);
}

.alert--error {
    background-color: #FFEBEE;
    color: var(--color-error);
    border: 1px solid #FFCDD2;
}

.alert--success {
    background-color: #E8F5E9;
    color: var(--color-success);
    border: 1px solid #C8E6C9;
}

.alert--info {
    background-color: #E8F0ED;
    color: var(--color-primary);
    border: 1px solid #B2D5CB;
}

/* ==========================================
   WHATSAPP FAB (Floating Action Button)
   ========================================== */

.whatsapp-fab {
    position: fixed;
    bottom: calc(var(--nav-height) + var(--spacing-md));
    right: var(--spacing-md);
    width: 64px;
    height: 64px;
    background-color: var(--color-whatsapp);
    color: var(--color-white);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    z-index: 100;
    transition: all var(--transition-normal);
    text-decoration: none;
}

.whatsapp-fab:hover,
.whatsapp-fab:focus-visible {
    background-color: var(--color-whatsapp-dark);
    transform: scale(1.1);
    color: var(--color-white);
    text-decoration: none;
}

.whatsapp-fab:active {
    transform: scale(0.95);
}

.whatsapp-fab__icon {
    width: 32px;
    height: 32px;
}

.whatsapp-fab__tooltip {
    position: absolute;
    right: 72px;
    background-color: var(--color-primary);
    color: var(--color-white);
    padding: 8px 16px;
    border-radius: 8px;
    font-size: var(--font-size-sm);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-normal);
}

.whatsapp-fab:hover .whatsapp-fab__tooltip {
    opacity: 1;
}

/* ==========================================
   DEELNEMERSLIJST
   ========================================== */

.participant-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.participant-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    background-color: var(--color-white);
    border-radius: var(--card-radius);
    margin-bottom: var(--spacing-sm);
    box-shadow: var(--shadow-sm);
}

.participant-item__info {
    flex: 1;
    min-width: 0;
}

.participant-item__name {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

.participant-item__cabin {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.participant-item__whatsapp {
    flex-shrink: 0;
}

/* ==========================================
   LAAD INDICATOR
   ========================================== */

.loader {
    display: inline-block;
    width: 32px;
    height: 32px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ==========================================
   LEGE STAAT
   ========================================== */

.empty-state {
    text-align: center;
    padding: var(--spacing-xxl) var(--spacing-lg);
    color: var(--color-text-light);
}

.empty-state__icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    opacity: 0.5;
}

.empty-state__text {
    font-size: var(--font-size-lg);
}