/**
 * ============================================
 * COMPONENTS
 * Buttons, forms, and reusable UI elements
 * ============================================
 */

/* ----------------------------------------
 * BUTTONS
 * ---------------------------------------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4) var(--space-8);
    font-family: var(--font-body);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    letter-spacing: var(--tracking-wider);
    text-transform: uppercase;
    border: 1px solid transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    position: relative;
    overflow: hidden;
}

.btn__text {
    position: relative;
    z-index: 1;
}

/* Primary button - filled */
.btn--primary {
    background-color: var(--color-bordeaux);
    border-color: var(--color-bordeaux);
    color: var(--text-primary);
}

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

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

/* Secondary button - outlined */
.btn--secondary {
    background-color: transparent;
    border-color: var(--border-medium);
    color: var(--text-secondary);
}

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

/* Ghost button - minimal */
.btn--ghost {
    background-color: transparent;
    border-color: transparent;
    color: var(--text-secondary);
    padding: var(--space-2) var(--space-4);
}

.btn--ghost:hover {
    color: var(--text-primary);
}

/* Loading state */
.btn--loading {
    pointer-events: none;
    opacity: 0.7;
}

.btn--loading .btn__text {
    opacity: 0;
}

.btn--loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* ----------------------------------------
 * FORM ELEMENTS
 * ---------------------------------------- */

.rsvp__form {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
}

.form__group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form__label {
    font-family: var(--font-body);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    letter-spacing: var(--tracking-widest);
    text-transform: uppercase;
    color: var(--text-muted);
}

.form__input,
.form__textarea,
.form__select {
    width: 100%;
    padding: var(--space-4);
    font-family: var(--font-body);
    font-size: var(--text-base);
    color: var(--text-primary);
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-medium);
    transition: border-color var(--transition-fast), 
                background-color var(--transition-fast);
}

.form__input:hover,
.form__textarea:hover,
.form__select:hover {
    border-color: var(--text-muted);
}

.form__input:focus,
.form__textarea:focus,
.form__select:focus {
    outline: none;
    border-color: var(--color-orchid-purple);
    background-color: rgba(166, 123, 190, 0.1);
}

.form__input::placeholder,
.form__textarea::placeholder {
    color: var(--text-muted);
    font-weight: var(--font-light);
}

.form__textarea {
    resize: vertical;
    min-height: 100px;
}

.form__select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23A67BBE' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-4) center;
    padding-right: var(--space-10);
    cursor: pointer;
}

/* ----------------------------------------
 * MEMBER CARD (RSVP household member)
 * ---------------------------------------- */

.member-card {
    padding: var(--space-5);
    background-color: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-subtle);
    margin-bottom: var(--space-4);
}

.member-card:last-child {
    margin-bottom: 0;
}

.member-card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-4);
}

.member-card__name {
    font-family: var(--font-display);
    font-size: var(--text-lg);
}

.member-card__attendance {
    display: flex;
    gap: var(--space-2);
}

.member-card__radio-group {
    display: flex;
    gap: 0;
}

.member-card__radio {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.member-card__radio-label {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    color: var(--text-muted);
    background-color: transparent;
    border: 1px solid var(--border-subtle);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.member-card__radio-label:first-of-type {
    border-right: none;
}

.member-card__radio:checked + .member-card__radio-label {
    background-color: var(--color-deep-juniper);
    border-color: var(--color-deep-juniper);
    color: var(--text-primary);
}

.member-card__radio[value="no"]:checked + .member-card__radio-label {
    background-color: var(--color-cabernet);
    border-color: var(--color-cabernet);
}

.member-card__radio:focus + .member-card__radio-label {
    outline: 2px solid var(--color-focus);
    outline-offset: 2px;
}

.member-card__meal {
    display: none;
}

.member-card--attending .member-card__meal {
    display: block;
}

.member-card__meal-label {
    display: block;
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    letter-spacing: var(--tracking-wide);
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: var(--space-2);
}

.member-card__meal-select {
    width: 100%;
    padding: var(--space-3);
    font-size: var(--text-sm);
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23A67BBE' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-3) center;
    padding-right: var(--space-8);
    cursor: pointer;
}

.member-card__meal-select:focus {
    outline: none;
    border-color: var(--color-orchid-purple);
}

/* ----------------------------------------
 * DECORATIVE ELEMENTS
 * ---------------------------------------- */

/* Decorative line */
.decor-line {
    width: 60px;
    height: 1px;
    background: linear-gradient(90deg, 
        transparent 0%, 
        var(--color-orchid-purple) 50%, 
        transparent 100%);
}

.decor-line--vertical {
    width: 1px;
    height: 60px;
    background: linear-gradient(180deg, 
        transparent 0%, 
        var(--color-orchid-purple) 50%, 
        transparent 100%);
}

/* Decorative asterisk/star */
.decor-star {
    display: inline-block;
    font-size: var(--text-sm);
    color: var(--color-orchid-purple);
    animation: twinkle 3s ease-in-out infinite;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* ----------------------------------------
 * UTILITY CLASSES
 * ---------------------------------------- */

/* Visually hidden but accessible */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Hidden */
[hidden] {
    display: none !important;
}

/* Container utilities */
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.container--narrow {
    max-width: var(--container-narrow);
}

.container--wide {
    max-width: var(--container-wide);
}