/* ==========================================================================
   buttons.css
   Invitación XV · Danna Sarahi
   Sistema visual para botones, enlaces de acción y estados interactivos.

   Orden recomendado:
   1. app.css / site.css
   2. cover.css
   3. sections.css
   4. cards.css
   5. buttons.css

   La mayoría de selectores están aislados bajo .invitation-content para no
   modificar botones administrativos ni componentes ajenos a la invitación.
   ========================================================================== */

/* ==========================================================================
   1. VARIABLES
   ========================================================================== */

.invitation-content {
    --button-gold-start: #f4dfad;
    --button-gold-middle: #d9b46d;
    --button-gold-end: #b77c31;
    --button-plum-start: #744258;
    --button-plum-end: #3c2030;
    --button-text-dark: #3f2918;
    --button-text-light: #fffaf4;
    --button-border: rgba(160, 105, 42, .34);
    --button-ring: rgba(201, 156, 82, .22);
    --button-shadow: 0 14px 34px rgba(92, 57, 38, .19), 0 4px 12px rgba(66, 39, 45, .1);
    --button-shadow-hover: 0 20px 46px rgba(92, 57, 38, .25), 0 8px 18px rgba(66, 39, 45, .13);
    --button-radius: 999px;
    --button-height: 54px;
}

    /* ==========================================================================
   2. BOTÓN BASE
   ========================================================================== */

    .invitation-content :is( .gold-button, .action-button, .primary-button, .secondary-button, .outline-button, .map-button, .location-button, .calendar-button, .gift-button, .rsvp-button, .confirmation-button, .whatsapp-button, .event-card__button, .gift-card__button, .rsvp-card__button, .button-primary, .button-secondary, .button-outline, .btn-invitation ) {
        position: relative;
        isolation: isolate;
        min-height: var(--button-height);
        max-width: 100%;
        padding: 13px 26px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        gap: 10px;
        overflow: hidden;
        border: 1px solid var(--button-border);
        border-radius: var(--button-radius);
        outline: none;
        color: var(--button-text-dark);
        background: linear-gradient( 180deg, var(--button-gold-start) 0%, var(--button-gold-middle) 52%, var(--button-gold-end) 100% );
        box-shadow: var(--button-shadow), inset 0 1px 0 rgba(255, 255, 255, .72), inset 0 -1px 0 rgba(92, 53, 18, .14);
        font-family: inherit;
        font-size: .92rem;
        font-weight: 800;
        letter-spacing: .045em;
        line-height: 1.2;
        text-align: center;
        text-decoration: none;
        text-transform: none;
        cursor: pointer;
        user-select: none;
        -webkit-tap-highlight-color: transparent;
        transform: translateZ(0);
        transition: transform .25s cubic-bezier(.22, .72, .22, 1), box-shadow .25s ease, border-color .25s ease, filter .25s ease, opacity .25s ease;
    }

        /* Brillo diagonal. */
        .invitation-content :is( .gold-button, .action-button, .primary-button, .secondary-button, .outline-button, .map-button, .location-button, .calendar-button, .gift-button, .rsvp-button, .confirmation-button, .whatsapp-button, .event-card__button, .gift-card__button, .rsvp-card__button, .button-primary, .button-secondary, .button-outline, .btn-invitation )::before {
            content: "";
            position: absolute;
            top: -50%;
            left: -42%;
            z-index: -1;
            width: 34%;
            height: 200%;
            background: linear-gradient( 90deg, transparent, rgba(255, 255, 255, .62), transparent );
            transform: rotate(18deg) translateX(-180%);
            opacity: 0;
            transition: transform .72s ease, opacity .32s ease;
        }

        /* Resplandor interior inferior. */
        .invitation-content :is( .gold-button, .action-button, .primary-button, .secondary-button, .outline-button, .map-button, .location-button, .calendar-button, .gift-button, .rsvp-button, .confirmation-button, .whatsapp-button, .event-card__button, .gift-card__button, .rsvp-card__button, .button-primary, .button-secondary, .button-outline, .btn-invitation )::after {
            content: "";
            position: absolute;
            left: 14%;
            right: 14%;
            bottom: -12px;
            z-index: -1;
            height: 20px;
            border-radius: 50%;
            background: rgba(196, 139, 61, .28);
            filter: blur(13px);
            opacity: .62;
            transition: opacity .25s ease, transform .25s ease;
        }

/* ==========================================================================
   3. HOVER, ACTIVE Y FOCO
   ========================================================================== */

@media (hover: hover) and (pointer: fine) {
    .invitation-content :is( .gold-button, .action-button, .primary-button, .secondary-button, .outline-button, .map-button, .location-button, .calendar-button, .gift-button, .rsvp-button, .confirmation-button, .whatsapp-button, .event-card__button, .gift-card__button, .rsvp-card__button, .button-primary, .button-secondary, .button-outline, .btn-invitation ):hover {
        border-color: rgba(142, 87, 26, .48);
        box-shadow: var(--button-shadow-hover), inset 0 1px 0 rgba(255, 255, 255, .82), inset 0 -1px 0 rgba(92, 53, 18, .18);
        filter: saturate(1.06) brightness(1.03);
        transform: translateY(-3px);
    }

        .invitation-content :is( .gold-button, .action-button, .primary-button, .secondary-button, .outline-button, .map-button, .location-button, .calendar-button, .gift-button, .rsvp-button, .confirmation-button, .whatsapp-button, .event-card__button, .gift-card__button, .rsvp-card__button, .button-primary, .button-secondary, .button-outline, .btn-invitation ):hover::before {
            opacity: 1;
            transform: rotate(18deg) translateX(560%);
        }

        .invitation-content :is( .gold-button, .action-button, .primary-button, .secondary-button, .outline-button, .map-button, .location-button, .calendar-button, .gift-button, .rsvp-button, .confirmation-button, .whatsapp-button, .event-card__button, .gift-card__button, .rsvp-card__button, .button-primary, .button-secondary, .button-outline, .btn-invitation ):hover::after {
            opacity: .9;
            transform: scaleX(1.08);
        }
}

.invitation-content :is( .gold-button, .action-button, .primary-button, .secondary-button, .outline-button, .map-button, .location-button, .calendar-button, .gift-button, .rsvp-button, .confirmation-button, .whatsapp-button, .event-card__button, .gift-card__button, .rsvp-card__button, .button-primary, .button-secondary, .button-outline, .btn-invitation ):active {
    transform: translateY(1px) scale(.985);
    box-shadow: 0 8px 20px rgba(92, 57, 38, .17), inset 0 2px 6px rgba(95, 54, 18, .12);
}

.invitation-content :is( .gold-button, .action-button, .primary-button, .secondary-button, .outline-button, .map-button, .location-button, .calendar-button, .gift-button, .rsvp-button, .confirmation-button, .whatsapp-button, .event-card__button, .gift-card__button, .rsvp-card__button, .button-primary, .button-secondary, .button-outline, .btn-invitation ):focus-visible {
    box-shadow: var(--button-shadow), 0 0 0 4px var(--button-ring), 0 0 0 1px rgba(137, 87, 28, .58);
}

/* ==========================================================================
   4. VARIANTE PRINCIPAL DORADA
   ========================================================================== */

.invitation-content :is( .gold-button, .primary-button, .button-primary, .event-card__button, .gift-card__button, .rsvp-card__button ) {
    color: var(--button-text-dark);
}

/* ==========================================================================
   5. VARIANTE CIRUELA
   ========================================================================== */

.invitation-content :is( .secondary-button, .button-secondary, .confirmation-button ) {
    border-color: rgba(239, 216, 167, .2);
    color: var(--button-text-light);
    background: linear-gradient( 180deg, var(--button-plum-start), var(--button-plum-end) );
    box-shadow: 0 15px 34px rgba(47, 24, 35, .24), inset 0 1px 0 rgba(255, 255, 255, .12);
}

    .invitation-content :is( .secondary-button, .button-secondary, .confirmation-button )::after {
        background: rgba(87, 42, 61, .34);
    }

/* ==========================================================================
   6. VARIANTE CONTORNO
   ========================================================================== */

.invitation-content :is( .outline-button, .button-outline ) {
    border-color: rgba(171, 119, 52, .42);
    color: #845622;
    background: rgba(255, 251, 247, .68);
    box-shadow: 0 10px 28px rgba(81, 49, 55, .09), inset 0 1px 0 rgba(255, 255, 255, .8);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

    .invitation-content :is( .outline-button, .button-outline )::after {
        opacity: .32;
    }

/* ==========================================================================
   7. BOTÓN DE GOOGLE MAPS / UBICACIÓN
   ========================================================================== */

.invitation-content :is( .map-button, .location-button ) {
    color: #fff;
    border-color: rgba(255, 255, 255, .15);
    background: linear-gradient( 180deg, #6e4055, #432535 );
    box-shadow: 0 15px 36px rgba(54, 27, 40, .24), inset 0 1px 0 rgba(255, 255, 255, .13);
}

    .invitation-content :is( .map-button, .location-button )::after {
        background: rgba(79, 37, 57, .38);
    }

/* ==========================================================================
   8. BOTÓN DE WHATSAPP
   ========================================================================== */

.invitation-content .whatsapp-button {
    border-color: rgba(12, 115, 69, .22);
    color: #fff;
    background: linear-gradient( 180deg, #35d477, #168e4e );
    box-shadow: 0 15px 36px rgba(15, 116, 65, .22), inset 0 1px 0 rgba(255, 255, 255, .24);
}

    .invitation-content .whatsapp-button::after {
        background: rgba(19, 142, 79, .34);
    }

/* ==========================================================================
   9. BOTONES DE CALENDARIO Y REGALOS
   ========================================================================== */

.invitation-content :is( .calendar-button, .gift-button ) {
    background: linear-gradient( 180deg, #fffaf0, #e8c985 );
}

/* ==========================================================================
   10. ICONOS
   ========================================================================== */

.invitation-content :is( .gold-button, .action-button, .primary-button, .secondary-button, .outline-button, .map-button, .location-button, .calendar-button, .gift-button, .rsvp-button, .confirmation-button, .whatsapp-button, .event-card__button, .gift-card__button, .rsvp-card__button, .button-primary, .button-secondary, .button-outline, .btn-invitation ) :is( svg, i, .button-icon, .btn-icon ) {
    position: relative;
    z-index: 2;
    flex: 0 0 auto;
    width: 1.15em;
    height: 1.15em;
    font-size: 1.12em;
    line-height: 1;
    transition: transform .25s ease, opacity .25s ease;
}

@media (hover: hover) and (pointer: fine) {
    .invitation-content :is( .gold-button, .action-button, .primary-button, .secondary-button, .outline-button, .map-button, .location-button, .calendar-button, .gift-button, .rsvp-button, .confirmation-button, .whatsapp-button, .event-card__button, .gift-card__button, .rsvp-card__button, .button-primary, .button-secondary, .button-outline, .btn-invitation ):hover :is( svg, i, .button-icon, .btn-icon ) {
        transform: translateX(2px) scale(1.04);
    }
}

/* El contenido siempre queda sobre los reflejos. */
.invitation-content :is( .gold-button, .action-button, .primary-button, .secondary-button, .outline-button, .map-button, .location-button, .calendar-button, .gift-button, .rsvp-button, .confirmation-button, .whatsapp-button, .event-card__button, .gift-card__button, .rsvp-card__button, .button-primary, .button-secondary, .button-outline, .btn-invitation ) > * {
    position: relative;
    z-index: 2;
}

/* ==========================================================================
   11. TAMAÑOS
   ========================================================================== */

.invitation-content :is( .button-small, .btn-invitation--small ) {
    min-height: 44px;
    padding: 10px 19px;
    font-size: .82rem;
}

.invitation-content :is( .button-large, .btn-invitation--large ) {
    min-height: 62px;
    padding: 16px 32px;
    font-size: 1rem;
}

.invitation-content :is( .button-block, .button-full, .btn-invitation--block ) {
    width: 100%;
}

/* ==========================================================================
   12. GRUPOS DE BOTONES
   ========================================================================== */

.invitation-content :is( .button-group, .action-buttons, .event-card__actions, .gift-card__actions, .rsvp-card__actions, .location-actions ) {
    width: min(100%, 620px);
    margin: 28px auto 0;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 12px;
}

    .invitation-content :is( .button-group, .action-buttons, .event-card__actions, .gift-card__actions, .rsvp-card__actions, .location-actions ) > * {
        flex: 0 1 auto;
    }

/* ==========================================================================
   13. BOTÓN DE DOS LÍNEAS
   ========================================================================== */

.invitation-content .button-content {
    display: grid;
    gap: 1px;
    text-align: left;
}

.invitation-content .button-title {
    font-size: .92rem;
    font-weight: 800;
    line-height: 1.15;
}

.invitation-content .button-subtitle {
    opacity: .76;
    font-size: .72rem;
    font-weight: 600;
    letter-spacing: .02em;
    line-height: 1.15;
}

/* ==========================================================================
   14. ESTADO DESHABILITADO
   ========================================================================== */

.invitation-content :is( button, .gold-button, .action-button, .primary-button, .secondary-button, .outline-button, .map-button, .location-button, .calendar-button, .gift-button, .rsvp-button, .confirmation-button, .whatsapp-button, .event-card__button, .gift-card__button, .rsvp-card__button, .button-primary, .button-secondary, .button-outline, .btn-invitation ):is( :disabled, [aria-disabled="true"], .is-disabled ) {
    pointer-events: none;
    cursor: not-allowed;
    opacity: .54;
    filter: grayscale(.22) saturate(.72);
    transform: none;
    box-shadow: 0 8px 18px rgba(70, 47, 53, .08);
}

/* ==========================================================================
   15. ESTADO DE CARGA
   ========================================================================== */

.invitation-content :is( .gold-button, .action-button, .primary-button, .secondary-button, .outline-button, .map-button, .location-button, .calendar-button, .gift-button, .rsvp-button, .confirmation-button, .whatsapp-button, .event-card__button, .gift-card__button, .rsvp-card__button, .button-primary, .button-secondary, .button-outline, .btn-invitation ).is-loading {
    pointer-events: none;
    cursor: wait;
}

    .invitation-content :is( .gold-button, .action-button, .primary-button, .secondary-button, .outline-button, .map-button, .location-button, .calendar-button, .gift-button, .rsvp-button, .confirmation-button, .whatsapp-button, .event-card__button, .gift-card__button, .rsvp-card__button, .button-primary, .button-secondary, .button-outline, .btn-invitation ).is-loading .button-label {
        opacity: .45;
    }

.invitation-content .button-spinner {
    width: 18px;
    height: 18px;
    flex: 0 0 auto;
    border: 2px solid rgba(255, 255, 255, .38);
    border-top-color: currentColor;
    border-radius: 50%;
    animation: invitationButtonSpin .75s linear infinite;
}

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

/* ==========================================================================
   16. ENLACES TEXTUALES
   ========================================================================== */

.invitation-content :is( .text-link, .card-link, .invitation-link ) {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 7px;
    color: #8d5e27;
    font-size: .92rem;
    font-weight: 750;
    text-decoration: none;
    transition: color .22s ease, transform .22s ease;
}

    .invitation-content :is( .text-link, .card-link, .invitation-link )::after {
        content: "";
        position: absolute;
        left: 0;
        right: 0;
        bottom: -4px;
        height: 1px;
        background: linear-gradient( 90deg, transparent, currentColor, transparent );
        transform: scaleX(.28);
        opacity: .55;
        transition: transform .25s ease, opacity .25s ease;
    }

@media (hover: hover) and (pointer: fine) {
    .invitation-content :is( .text-link, .card-link, .invitation-link ):hover {
        color: #6f4216;
        transform: translateY(-1px);
    }

        .invitation-content :is( .text-link, .card-link, .invitation-link ):hover::after {
            transform: scaleX(1);
            opacity: .9;
        }
}

/* ==========================================================================
   17. BOTONES CIRCULARES
   ========================================================================== */

.invitation-content :is( .icon-button, .round-button ) {
    width: 52px;
    height: 52px;
    min-width: 52px;
    min-height: 52px;
    padding: 0;
    display: inline-grid;
    place-items: center;
    border: 1px solid rgba(171, 119, 52, .3);
    border-radius: 50%;
    color: #6f4216;
    background: linear-gradient( 145deg, rgba(255, 255, 255, .92), rgba(233, 204, 143, .75) );
    box-shadow: 0 12px 28px rgba(75, 46, 53, .14), inset 0 1px 0 rgba(255, 255, 255, .9);
    cursor: pointer;
    transition: transform .24s ease, box-shadow .24s ease;
}

@media (hover: hover) and (pointer: fine) {
    .invitation-content :is( .icon-button, .round-button ):hover {
        transform: translateY(-3px) rotate(2deg);
        box-shadow: 0 17px 34px rgba(75, 46, 53, .18), inset 0 1px 0 rgba(255, 255, 255, .92);
    }
}

/* ==========================================================================
   18. MÓVIL
   ========================================================================== */

@media (max-width: 560px) {
    .invitation-content :is( .gold-button, .action-button, .primary-button, .secondary-button, .outline-button, .map-button, .location-button, .calendar-button, .gift-button, .rsvp-button, .confirmation-button, .whatsapp-button, .event-card__button, .gift-card__button, .rsvp-card__button, .button-primary, .button-secondary, .button-outline, .btn-invitation ) {
        min-height: 52px;
        padding: 12px 20px;
        font-size: .88rem;
    }

    .invitation-content :is( .button-group, .action-buttons, .event-card__actions, .gift-card__actions, .rsvp-card__actions, .location-actions ) {
        width: 100%;
        align-items: stretch;
        flex-direction: column;
    }

        .invitation-content :is( .button-group, .action-buttons, .event-card__actions, .gift-card__actions, .rsvp-card__actions, .location-actions ) > :is( a, button, .gold-button, .action-button, .primary-button, .secondary-button, .outline-button, .map-button, .location-button, .calendar-button, .gift-button, .rsvp-button, .confirmation-button, .whatsapp-button, .event-card__button, .gift-card__button, .rsvp-card__button, .button-primary, .button-secondary, .button-outline, .btn-invitation ) {
            width: 100%;
        }
}

/* ==========================================================================
   19. MOVIMIENTO REDUCIDO
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    .invitation-content :is( .gold-button, .action-button, .primary-button, .secondary-button, .outline-button, .map-button, .location-button, .calendar-button, .gift-button, .rsvp-button, .confirmation-button, .whatsapp-button, .event-card__button, .gift-card__button, .rsvp-card__button, .button-primary, .button-secondary, .button-outline, .btn-invitation, .icon-button, .round-button, .text-link, .card-link, .invitation-link ) {
        transition: none !important;
    }

    .invitation-content :is( .gold-button, .action-button, .primary-button, .secondary-button, .outline-button, .map-button, .location-button, .calendar-button, .gift-button, .rsvp-button, .confirmation-button, .whatsapp-button, .event-card__button, .gift-card__button, .rsvp-card__button, .button-primary, .button-secondary, .button-outline, .btn-invitation )::before {
        display: none;
    }

    .invitation-content .button-spinner {
        animation-duration: 1.5s;
    }
}