/**
 * SlonChat — Frontend CSS
 * Full responsive design system: modals, buttons, panels, animations.
 * Supports iOS Safari, Android Chrome, all screen sizes.
 *
 * Design tokens:
 *  --sc-gold    : #d4af37  (gold accent)
 *  --sc-dark    : #0a0a10  (main background)
 *  --sc-overlay : rgba(0,0,0,.72)
 */

/* ═══════════════════════════════════════════════════════════════════════════
   1. CSS Custom Properties (Design Tokens)
═══════════════════════════════════════════════════════════════════════════ */
:root {
    --sc-gold:          #d4af37;
    --sc-gold-light:    #e8c94c;
    --sc-gold-dim:      rgba(212, 175, 55, 0.18);
    --sc-gold-glow-sm:  0 0 16px 3px rgba(212, 175, 55, 0.40);
    --sc-gold-glow-lg:  0 0 30px 6px rgba(212, 175, 55, 0.45), 0 0 60px 12px rgba(212, 175, 55, 0.18);
    --sc-dark:          #0a0a10;
    --sc-dark-mid:      #0d0d14;
    --sc-surface:       #13131a;
    --sc-text:          #e8e8f0;
    --sc-muted:         #7a7a9a;
    --sc-overlay:       rgba(0, 0, 0, 0.72);
    --sc-radius-btn:    10px;
    --sc-radius-modal:  18px;
    --sc-transition:    cubic-bezier(0.4, 0, 0.2, 1);
    --sc-modal-w:       860px;
    --sc-modal-h:       620px;
}

/* ═══════════════════════════════════════════════════════════════════════════
   2. Chat Modal Overlay
═══════════════════════════════════════════════════════════════════════════ */
.slonchat-overlay {
    position: fixed;
    inset: 0;
    z-index: 999990;
    background: var(--sc-overlay);
    display: none;
    align-items: center;
    justify-content: center;
    padding: 16px;
    box-sizing: border-box;
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    /* GPU-accelerated: will-change prevents repaints */
    will-change: opacity;
    animation: scOverlayIn .22s var(--sc-transition) both;
}

.slonchat-overlay[style*="flex"] {
    display: flex !important;
}

@keyframes scOverlayIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}

/* Modal window */
.slonchat-modal-window {
    position: relative;
    background: var(--sc-dark);
    border: 1px solid rgba(212, 175, 55, 0.25);
    border-radius: var(--sc-radius-modal);
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.7), var(--sc-gold-glow-sm);
    width: min(var(--sc-modal-w), 100%);
    max-height: calc(100svh - 32px);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: scModalIn .28s var(--sc-transition) both;
}

@keyframes scModalIn {
    from { opacity: 0; transform: translateY(24px) scale(0.96); }
    to   { opacity: 1; transform: translateY(0)    scale(1);    }
}

/* Close button */
.slonchat-modal-close {
    position: absolute;
    top: 14px;
    right: 14px;
    z-index: 10;
    background: rgba(212, 175, 55, 0.10);
    border: 1px solid rgba(212, 175, 55, 0.22);
    border-radius: 8px;
    color: var(--sc-gold);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background .2s ease, transform .15s ease;
    padding: 0;
    line-height: 1;
}
.slonchat-modal-close:hover {
    background: rgba(212, 175, 55, 0.25);
    transform: scale(1.08);
}
.slonchat-modal-close:active {
    transform: scale(0.95);
}

/* iframe wrapper */
.slonchat-iframe-wrap {
    position: relative;
    flex: 1;
    min-height: 400px;
}

.slonchat-iframe {
    display: block;
    width: 100%;
    height: var(--sc-modal-h);
    max-height: calc(100svh - 80px);
    border: none;
    border-radius: 0 0 var(--sc-radius-modal) var(--sc-radius-modal);
}

/* Loading spinner overlay */
.slonchat-iframe-loader {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--sc-dark);
    border-radius: 0 0 var(--sc-radius-modal) var(--sc-radius-modal);
    transition: opacity .3s ease;
}
.slonchat-iframe-loader.is-hidden {
    opacity: 0;
    pointer-events: none;
}

/* Gold spinner */
.slonchat-spinner {
    width: 42px;
    height: 42px;
    border: 3px solid rgba(212, 175, 55, 0.15);
    border-top-color: var(--sc-gold);
    border-radius: 50%;
    animation: scSpin .8s linear infinite;
}
@keyframes scSpin {
    to { transform: rotate(360deg); }
}

/* ═══════════════════════════════════════════════════════════════════════════
   3. Seller Modal (extends base modal)
═══════════════════════════════════════════════════════════════════════════ */
.slonchat-seller-overlay .slonchat-modal-window {
    width: min(640px, 100%);
}

.slonchat-seller-header {
    display: flex;
    flex-direction: column;
    padding: 20px 56px 16px 22px;
    border-bottom: 1px solid rgba(212, 175, 55, 0.15);
    background: var(--sc-dark-mid);
}

.slonchat-seller-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: .08em;
    color: var(--sc-gold);
    margin-bottom: 4px;
    font-family: 'Inter', system-ui, sans-serif;
}

.slonchat-seller-name {
    font-size: 16px;
    font-weight: 700;
    color: var(--sc-text);
    font-family: 'Inter', system-ui, sans-serif;
}

/* ═══════════════════════════════════════════════════════════════════════════
   4. Header Button (floating)
═══════════════════════════════════════════════════════════════════════════ */
.slonchat-header-btn-wrap {
    /* The wrapper is injected via wp_body_open — it floats in the header area.
       Themes that have their own header positioning will control it via CSS.
       Default: fixed top-right for themes without special handling. */
    position: relative;
    display: inline-flex;
    align-items: center;
}

.slonchat-header-btn {
    position: relative;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 46px;
    height: 46px;
    background: transparent;
    border: none;
    border-radius: 12px;
    color: var(--sc-text);
    cursor: pointer;
    padding: 0;
    transition: color .2s ease, background .2s ease, transform .18s ease;
    outline: none;
}

.slonchat-header-btn:hover {
    color: var(--sc-gold);
    background: var(--sc-gold-dim);
    transform: scale(1.06);
}

.slonchat-header-btn:active { transform: scale(0.95); }

.slonchat-header-icon {
    width: 24px;
    height: 24px;
    pointer-events: none;
}

.slonchat-header-icon-img {
    width: 28px;
    height: 28px;
    object-fit: contain;
    border-radius: 4px;
}

/* Health dot */
.slonchat-health-dot {
    position: absolute;
    top: 8px;
    right: 8px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #2ecc71;
    border: 1.5px solid var(--sc-dark);
    transition: background .4s ease;
}
.slonchat-header-btn.is-offline .slonchat-health-dot {
    background: #7a7a9a;
}
.slonchat-header-btn.is-hidden-by-health {
    display: none !important;
}

/* ═══════════════════════════════════════════════════════════════════════════
   5. Icon-Button Shortcode [slonchat_button]
═══════════════════════════════════════════════════════════════════════════ */
.slonchat-icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--sc-dark);
    border: 2px solid rgba(212, 175, 55, 0.30);
    border-radius: 12px;
    color: var(--sc-gold);
    cursor: pointer;
    padding: 0;
    transition: border-color .22s ease, box-shadow .22s ease, transform .18s ease, background .22s ease;
    outline: none;
}

.slonchat-icon-btn:hover,
.slonchat-icon-btn:focus-visible {
    border-color: var(--sc-gold);
    box-shadow: var(--sc-gold-glow-sm);
    background: #0d0d14;
    transform: translateY(-2px);
    outline: none;
}

.slonchat-icon-btn:active { transform: translateY(0); }

.slonchat-icon-btn-img {
    width: 60%;
    height: 60%;
    object-fit: contain;
}

/* ═══════════════════════════════════════════════════════════════════════════
   6. Seller Contact Button (auto-injected on product/vendor pages)
═══════════════════════════════════════════════════════════════════════════ */

/* Wrapper injected next to Add to Cart */
.slonchat-seller-btn-wrap {
    display: inline-flex;
    align-items: center;
    margin: 0;
}

.slonchat-seller-btn-wrap.slonchat-seller-btn--product {
    /* Align with Add to Cart on single product page */
    margin-top: 0;
    margin-left: 8px;
}

.slonchat-seller-btn-wrap.slonchat-seller-btn--auction {
    margin-top: 8px;
    width: 100%;
}
.slonchat-seller-btn-wrap.slonchat-seller-btn--auction .slonchat-seller-btn {
    width: 100%;
    justify-content: center;
}

/* Vendor store wrap */
.slonchat-store-btn-wrap {
    display: flex;
    justify-content: center;
    padding: 16px 20px;
}

/* The actual seller button */
.slonchat-seller-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: #0a0a0a;
    color: #ffffff;
    border: 2px solid var(--sc-gold);
    border-radius: var(--sc-radius-btn);
    font-size: 15px;
    padding: 13px 24px;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-weight: 600;
    letter-spacing: .03em;
    cursor: pointer;
    outline: none;
    transition: color .22s ease, box-shadow .22s ease, transform .18s ease;
    white-space: nowrap;
}

.slonchat-seller-btn:hover,
.slonchat-seller-btn:focus-visible {
    color: var(--sc-gold);
    box-shadow: var(--sc-gold-glow-lg);
    transform: translateY(-2px);
    outline: none;
}

.slonchat-seller-btn:active { transform: translateY(0); }

.slonchat-seller-btn--store {
    font-size: 16px;
    padding: 15px 32px;
    border-radius: 12px;
}

.slonchat-btn-icon {
    flex-shrink: 0;
    width: 18px;
    height: 18px;
}

/* ═══════════════════════════════════════════════════════════════════════════
   7. Side Panel [slonchat_panel]
   (Panel-specific styles are generated inline per-instance.
    These are shared/base styles.)
═══════════════════════════════════════════════════════════════════════════ */
.slonchat-panel {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}
.slonchat-panel-iframe {
    display: block;
    border: none;
}

/* ═══════════════════════════════════════════════════════════════════════════
   8. Responsive — Tablet (≤ 1024px)
═══════════════════════════════════════════════════════════════════════════ */
@media (max-width: 1024px) {
    :root {
        --sc-modal-w: 700px;
        --sc-modal-h: 560px;
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   9. Responsive — Mobile (≤ 768px)
═══════════════════════════════════════════════════════════════════════════ */
@media (max-width: 768px) {
    :root {
        --sc-modal-w:  100%;
        --sc-modal-h:  calc(100svh - 120px);
        --sc-radius-modal: 16px 16px 0 0;
    }

    .slonchat-overlay {
        align-items: flex-end;
        padding: 0;
    }

    .slonchat-modal-window {
        border-radius: var(--sc-radius-modal);
        max-height: 92svh;
        width: 100%;
        animation: scModalSlideUp .3s var(--sc-transition) both;
    }

    @keyframes scModalSlideUp {
        from { transform: translateY(100%); opacity: 0.6; }
        to   { transform: translateY(0);    opacity: 1;   }
    }

    .slonchat-iframe {
        height: calc(92svh - 60px);
        border-radius: 0;
    }

    /* Seller modal — full-screen on mobile */
    .slonchat-seller-overlay .slonchat-modal-window {
        width: 100%;
        border-radius: 16px 16px 0 0;
    }

    /* Product page: stack buttons vertically */
    .slonchat-seller-btn-wrap.slonchat-seller-btn--product {
        margin-left: 0;
        margin-top: 10px;
        width: 100%;
        display: block;
    }
    .slonchat-seller-btn-wrap.slonchat-seller-btn--product .slonchat-seller-btn {
        width: 100%;
    }

    .slonchat-seller-btn {
        font-size: 14px;
        padding: 12px 20px;
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   10. Responsive — Small Mobile (≤ 480px)
═══════════════════════════════════════════════════════════════════════════ */
@media (max-width: 480px) {
    .slonchat-modal-close {
        top: 10px;
        right: 10px;
        width: 32px;
        height: 32px;
    }

    .slonchat-seller-header {
        padding: 16px 48px 14px 16px;
    }

    .slonchat-seller-name {
        font-size: 14px;
    }

    .slonchat-seller-btn {
        font-size: 13px;
        padding: 11px 16px;
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   11. iOS Safe Area Support (iPhone X+, notch/Dynamic Island)
═══════════════════════════════════════════════════════════════════════════ */
@supports (padding-bottom: env(safe-area-inset-bottom)) {
    @media (max-width: 768px) {
        .slonchat-modal-window {
            padding-bottom: env(safe-area-inset-bottom, 0);
        }

        .slonchat-iframe {
            /* Prevents iframe from being hidden under home indicator */
            height: calc(92svh - 60px - env(safe-area-inset-bottom, 0px));
        }
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   12. Reduced Motion Preference
═══════════════════════════════════════════════════════════════════════════ */
@media (prefers-reduced-motion: reduce) {
    .slonchat-overlay,
    .slonchat-modal-window,
    .slonchat-icon-btn,
    .slonchat-header-btn,
    .slonchat-seller-btn,
    .slonchat-modal-close {
        animation: none !important;
        transition: none !important;
    }
    .slonchat-spinner {
        animation-duration: 1.6s;
    }
}

/* ═══════════════════════════════════════════════════════════════════════════
   13. Print: hide all chat UI
═══════════════════════════════════════════════════════════════════════════ */
@media print {
    .slonchat-overlay,
    .slonchat-header-btn-wrap,
    .slonchat-seller-btn-wrap,
    .slonchat-store-btn-wrap,
    .slonchat-icon-btn-wrap,
    .slonchat-panel { display: none !important; }
}