/*
 * Ars Preuge Merch – Frontend štýly
 * Namespace: .ars-merch-
 * Bez externých závislostí
 */

/* ============================================================
   Premenné (CSS Custom Properties)
   ============================================================ */
:root {
    --ars-primary:        #1a1a1a;
    --ars-accent:         #c0392b;
    --ars-accent-hover:   #a93226;
    --ars-success:        #27ae60;
    --ars-gray-100:       #f8f8f8;
    --ars-gray-200:       #e8e8e8;
    --ars-gray-400:       #aaa;
    --ars-gray-600:       #666;
    --ars-gray-800:       #333;
    --ars-white:          #fff;
    --ars-shadow-sm:      0 2px 8px rgba(0,0,0,.08);
    --ars-shadow-md:      0 8px 32px rgba(0,0,0,.16);
    --ars-shadow-lg:      0 20px 60px rgba(0,0,0,.24);
    --ars-radius:         8px;
    --ars-radius-lg:      12px;
    --ars-transition:     .2s ease;
    --ars-font:           'Montserrat', sans-serif;
    --ars-font-heading:   'Montserrat', sans-serif;
    --ars-modal-z:        99999;
}

/* ============================================================
   Základný font pre celý plugin
   ============================================================ */
.ars-merch-grid-wrap,
.ars-merch-modal-overlay {
    font-family: var(--ars-font);
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ============================================================
   Mriežka položiek
   ============================================================ */
.ars-merch-grid-wrap {
    width: 100%;
}

.ars-merch-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    list-style: none;
    margin: 0;
    padding: 0;
}

@media (max-width: 1024px) {
    .ars-merch-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 20px;
    }
}

@media (max-width: 768px) {
    .ars-merch-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 16px;
    }
}

@media (max-width: 480px) {
    .ars-merch-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
}

.ars-merch-no-items {
    text-align: center;
    color: var(--ars-gray-600);
    padding: 48px 0;
    font-size: 1.1em;
}

/* ============================================================
   Karta položky
   ============================================================ */
.ars-merch-card {
    background: var(--ars-white);
    border-radius: var(--ars-radius-lg);
    box-shadow: var(--ars-shadow-sm);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: box-shadow var(--ars-transition), transform var(--ars-transition);
}

.ars-merch-card:hover {
    box-shadow: var(--ars-shadow-md);
    transform: translateY(-2px);
}

.ars-merch-card--soldout {
    opacity: .75;
}

.ars-merch-card--soldout:hover {
    transform: none;
    box-shadow: var(--ars-shadow-sm);
}

/* Obrázok karty */
.ars-merch-card__image-wrap {
    position: relative;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    background: var(--ars-gray-100);
    cursor: pointer;
}

.ars-merch-card__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s ease;
    display: block;
}

.ars-merch-card:hover .ars-merch-card__image {
    transform: scale(1.04);
}

.ars-merch-card__no-image {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ars-gray-400);
    font-size: .9em;
}

/* Odznaky */
.ars-merch-badge {
    position: absolute;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: .75em;
    font-weight: 600;
    line-height: 1.3;
    letter-spacing: .03em;
    text-transform: uppercase;
}

.ars-merch-badge--soldout {
    top: 10px;
    left: 10px;
    background: rgba(0,0,0,.75);
    color: var(--ars-white);
}

.ars-merch-badge--category {
    bottom: 10px;
    left: 10px;
    background: rgba(255,255,255,.92);
    color: var(--ars-gray-800);
    box-shadow: 0 1px 4px rgba(0,0,0,.1);
}

/* Telo karty */
.ars-merch-card__body {
    padding: 16px;
    display: flex;
    flex-direction: column;
    flex: 1;
    gap: 10px;
}

.ars-merch-card__title {
    margin: 0;
    font-family: var(--ars-font-heading);
    font-size: 1em;
    font-weight: 600;
    line-height: 1.35;
    color: var(--ars-primary);
}

.ars-merch-card__meta {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-family: var(--ars-font);
    font-size: .9em;
    font-weight: 400;
    color: var(--ars-gray-600);
}

.ars-merch-card__donation strong {
    color: var(--ars-primary);
    font-weight: 700;
}

.ars-merch-card__quantity {
    font-size: .85em;
    color: var(--ars-gray-600);
}

/* ============================================================
   Tlačidlá
   ============================================================ */
.ars-merch-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--ars-radius);
    font-family: var(--ars-font-heading);
    font-size: .95em;
    font-weight: 600;
    line-height: 1.2;
    cursor: pointer;
    border: 2px solid transparent;
    text-decoration: none;
    transition:
        background var(--ars-transition),
        color var(--ars-transition),
        border-color var(--ars-transition),
        opacity var(--ars-transition);
}

.ars-merch-btn--reserve {
    background: var(--ars-accent);
    color: var(--ars-white);
    width: 100%;
    margin-top: auto;
}

.ars-merch-btn--reserve:hover,
.ars-merch-btn--reserve:focus-visible {
    background: var(--ars-accent-hover);
    color: var(--ars-white);
    outline: 3px solid var(--ars-accent);
    outline-offset: 2px;
}

.ars-merch-btn--disabled {
    background: var(--ars-gray-200);
    color: var(--ars-gray-400);
    cursor: not-allowed;
    width: 100%;
    margin-top: auto;
}

.ars-merch-btn--submit {
    background: var(--ars-accent);
    color: var(--ars-white);
    width: 100%;
    padding: 14px 20px;
    font-size: 1em;
    margin-top: 4px;
}

.ars-merch-btn--submit:hover:not(:disabled),
.ars-merch-btn--submit:focus-visible:not(:disabled) {
    background: var(--ars-accent-hover);
    color: var(--ars-white);
}

.ars-merch-btn--submit:disabled {
    opacity: .65;
    cursor: not-allowed;
}

.ars-merch-btn--secondary {
    background: transparent;
    color: var(--ars-gray-600);
    border-color: var(--ars-gray-200);
}

.ars-merch-btn--secondary:hover {
    border-color: var(--ars-gray-400);
    color: var(--ars-primary);
}

.ars-merch-btn--darujme {
    background: var(--ars-success);
    color: var(--ars-white);
    padding: 14px 28px;
    font-size: 1.05em;
}

.ars-merch-btn--darujme:hover {
    background: #219653;
    color: var(--ars-white);
}

/* ============================================================
   Modálne okno
   ============================================================ */
.ars-merch-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, .6);
    z-index: var(--ars-modal-z);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    opacity: 0;
    transition: opacity .25s ease;
}

.ars-merch-modal-overlay.is-visible {
    opacity: 1;
}

.ars-merch-modal-overlay[hidden] {
    display: none !important;
}

.ars-merch-modal {
    background: var(--ars-white);
    border-radius: var(--ars-radius-lg);
    box-shadow: var(--ars-shadow-lg);
    width: 100%;
    max-width: 900px;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    transform: translateY(20px);
    transition: transform .25s ease;
    scroll-behavior: smooth;
}

.ars-merch-modal-overlay.is-visible .ars-merch-modal {
    transform: translateY(0);
}

/* Zatvoriť tlačidlo */
.ars-merch-modal__close {
    position: sticky;
    top: 16px;
    float: right;
    margin: 12px 12px 0 0;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--ars-gray-100);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ars-gray-600);
    z-index: 10;
    transition: background var(--ars-transition), color var(--ars-transition);
}

.ars-merch-modal__close:hover,
.ars-merch-modal__close:focus-visible {
    background: var(--ars-gray-200);
    color: var(--ars-primary);
    outline: 3px solid var(--ars-accent);
    outline-offset: 2px;
}

/* Loader */
.ars-merch-modal__loader {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
}

.ars-merch-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--ars-gray-200);
    border-top-color: var(--ars-accent);
    border-radius: 50%;
    animation: ars-spin .7s linear infinite;
}

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

/* Obsah modálu */
.ars-merch-modal__content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    clear: both;
}

.ars-merch-modal__content[hidden] {
    display: none;
}

@media (max-width: 700px) {
    .ars-merch-modal__content {
        grid-template-columns: 1fr;
    }
}

/* Galéria – ľavý stĺpec */
.ars-merch-modal__gallery-col {
    padding: 0 0 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    position: sticky;
    top: 0;
    align-self: start;
}

@media (max-width: 700px) {
    .ars-merch-modal__gallery-col {
        position: static;
    }
}

.ars-merch-modal__main-image-wrap {
    position: relative;
    aspect-ratio: 1 / 1;
    overflow: hidden;
    background: var(--ars-gray-100);
    border-radius: var(--ars-radius-lg) 0 0 0;
}

@media (max-width: 700px) {
    .ars-merch-modal__main-image-wrap {
        border-radius: var(--ars-radius-lg) var(--ars-radius-lg) 0 0;
    }
}

.ars-merch-modal__main-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
    transition: opacity .2s ease;
}

/* Navigačné šípky galérie */
.ars-merch-gallery-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 40px;
    height: 40px;
    background: rgba(255,255,255,.85);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--ars-primary);
    box-shadow: var(--ars-shadow-sm);
    transition: background var(--ars-transition), opacity var(--ars-transition);
    z-index: 2;
    opacity: 0;
}

.ars-merch-modal__main-image-wrap:hover .ars-merch-gallery-nav,
.ars-merch-gallery-nav:focus-visible {
    opacity: 1;
}

.ars-merch-gallery-nav:hover {
    background: var(--ars-white);
}

.ars-merch-gallery-nav--prev { left: 8px; }
.ars-merch-gallery-nav--next { right: 8px; }

.ars-merch-gallery-nav[hidden] { display: none; }

/* Miniatúry */
.ars-merch-modal__thumbs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    padding: 0 16px;
}

.ars-merch-thumb {
    width: 60px;
    height: 60px;
    object-fit: cover;
    border-radius: 6px;
    cursor: pointer;
    border: 2px solid transparent;
    opacity: .65;
    transition: opacity var(--ars-transition), border-color var(--ars-transition);
}

.ars-merch-thumb:hover {
    opacity: .9;
}

.ars-merch-thumb.is-active {
    border-color: var(--ars-accent);
    opacity: 1;
}

/* Info stĺpec – pravý */
.ars-merch-modal__info-col {
    padding: 24px 28px 28px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    overflow-y: auto;
}

.ars-merch-modal__title {
    margin: 0;
    font-family: var(--ars-font-heading);
    font-size: 1.4em;
    font-weight: 600;
    line-height: 1.25;
    color: var(--ars-primary);
}

.ars-merch-modal__description {
    font-family: var(--ars-font);
    font-size: .95em;
    font-weight: 400;
    line-height: 1.65;
    color: var(--ars-gray-800);
    max-height: 140px;
    overflow-y: auto;
}

.ars-merch-modal__description p:first-child { margin-top: 0; }
.ars-merch-modal__description p:last-child  { margin-bottom: 0; }

.ars-merch-modal__donation-info {
    display: flex;
    align-items: baseline;
    gap: 8px;
    font-family: var(--ars-font);
    font-size: .95em;
    padding: 10px 14px;
    background: var(--ars-gray-100);
    border-radius: var(--ars-radius);
    border-left: 3px solid var(--ars-accent);
}

.ars-merch-modal__donation-label {
    color: var(--ars-gray-600);
    white-space: nowrap;
}

.ars-merch-modal__donation-amount {
    font-family: var(--ars-font-heading);
    font-size: 1.3em;
    font-weight: 600;
    color: var(--ars-accent);
}

/* ============================================================
   Formulár rezervácie
   ============================================================ */
.ars-merch-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.ars-merch-form__field {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.ars-merch-form__row {
    display: grid;
    grid-template-columns: 1fr 120px;
    gap: 12px;
}

.ars-merch-form__label {
    font-family: var(--ars-font-heading);
    font-size: .875em;
    font-weight: 600;
    color: var(--ars-gray-800);
}

.ars-merch-required {
    color: var(--ars-accent);
    margin-left: 2px;
}

.ars-merch-optional {
    font-weight: 400;
    color: var(--ars-gray-400);
    margin-left: 4px;
    font-size: .9em;
}

.ars-merch-form__input {
    width: 100%;
    padding: 10px 12px;
    border: 1.5px solid var(--ars-gray-200);
    border-radius: var(--ars-radius);
    font-family: var(--ars-font);
    font-size: .95em;
    font-weight: 400;
    color: var(--ars-primary);
    background: var(--ars-white);
    transition: border-color var(--ars-transition), box-shadow var(--ars-transition);
    box-sizing: border-box;
    appearance: none;
    -webkit-appearance: none;
}

.ars-merch-form__input:focus {
    outline: none;
    border-color: var(--ars-accent);
    box-shadow: 0 0 0 3px rgba(192, 57, 43, .15);
}

.ars-merch-form__input.is-invalid {
    border-color: var(--ars-accent);
}

/* Fieldset */
.ars-merch-form__fieldset {
    border: 1.5px solid var(--ars-gray-200);
    border-radius: var(--ars-radius);
    padding: 12px 14px;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.ars-merch-form__fieldset legend {
    padding: 0 6px;
    font-size: .875em;
    font-weight: 600;
    color: var(--ars-gray-800);
}

.ars-merch-form__radio-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-size: .9em;
    color: var(--ars-gray-800);
}

.ars-merch-form__radio {
    width: 16px;
    height: 16px;
    accent-color: var(--ars-accent);
    cursor: pointer;
    flex-shrink: 0;
}

.ars-merch-form__radio-note {
    color: var(--ars-gray-400);
    font-size: .85em;
}

/* Adresové polia */
.ars-merch-address-fields {
    border: 1px solid var(--ars-gray-200);
    border-radius: var(--ars-radius);
    padding: 14px;
    background: var(--ars-gray-100);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.ars-merch-address-fields[hidden] { display: none; }

/* Súhrn sumy */
.ars-merch-price-summary {
    background: var(--ars-gray-100);
    border-radius: var(--ars-radius);
    padding: 12px 14px;
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-family: var(--ars-font);
    font-size: .9em;
    font-weight: 400;
}

.ars-merch-price-row {
    display: flex;
    justify-content: space-between;
    gap: 8px;
    color: var(--ars-gray-600);
}

.ars-merch-price-row[hidden] { display: none; }

.ars-merch-price-row--total {
    font-family: var(--ars-font-heading);
    font-weight: 600;
    font-size: 1.05em;
    color: var(--ars-primary);
    padding-top: 8px;
    margin-top: 2px;
    border-top: 1px solid var(--ars-gray-200);
}

/* Info box */
.ars-merch-form__info-box {
    background: #fff8e1;
    border-left: 3px solid #f0a500;
    border-radius: var(--ars-radius);
    padding: 12px 14px;
    font-family: var(--ars-font);
    font-size: .875em;
    font-weight: 400;
    line-height: 1.55;
    color: var(--ars-gray-800);
}

/* Checkbox */
.ars-merch-form__field--checkbox {
    flex-direction: row;
    align-items: flex-start;
    gap: 0;
}

.ars-merch-form__checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    cursor: pointer;
    font-family: var(--ars-font);
    font-size: .875em;
    font-weight: 400;
    line-height: 1.5;
    color: var(--ars-gray-800);
}

.ars-merch-form__checkbox {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    margin-top: 1px;
    accent-color: var(--ars-accent);
    cursor: pointer;
}

/* Chybová správa */
.ars-merch-form__error {
    background: #fef2f2;
    border: 1px solid #fca5a5;
    border-radius: var(--ars-radius);
    padding: 12px 14px;
    font-size: .875em;
    color: #b91c1c;
}

.ars-merch-form__error[hidden] { display: none; }

/* ============================================================
   Ďakovná správa
   ============================================================ */
.ars-merch-modal__success {
    padding: 48px 32px;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.ars-merch-modal__success[hidden] { display: none; }

.ars-merch-success-icon {
    color: var(--ars-success);
}

.ars-merch-success-title {
    margin: 0;
    font-family: var(--ars-font-heading);
    font-size: 1.5em;
    font-weight: 600;
    color: var(--ars-primary);
}

.ars-merch-success-text {
    font-family: var(--ars-font);
    font-size: .95em;
    font-weight: 400;
    line-height: 1.65;
    color: var(--ars-gray-600);
    max-width: 480px;
    white-space: pre-line;
}

/* ============================================================
   Responzivita modálu
   ============================================================ */
@media (max-width: 700px) {
    .ars-merch-modal {
        max-height: 95vh;
        border-radius: var(--ars-radius-lg) var(--ars-radius-lg) 0 0;
        margin-top: auto;
        margin-bottom: 0;
    }
    .ars-merch-modal-overlay {
        align-items: flex-end;
        padding: 0;
    }
    .ars-merch-modal__info-col {
        padding: 16px 18px 24px;
    }
    .ars-merch-modal__title {
        font-size: 1.2em;
    }
    .ars-merch-form__row {
        grid-template-columns: 1fr;
    }
    .ars-merch-modal__success {
        padding: 32px 20px;
    }
}

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

/* Zamknúť scroll na body keď je modál otvorený */
body.ars-merch-modal-open {
    overflow: hidden;
}