/* =======================================================
   KREATYWNE FB SLIDER - Frontend Styles
   Multi-preset design system with CSS custom properties
   ======================================================= */

/* ---------- Base reset & root container ---------- */
.kfbs-container,
.kfbs-container *,
.kfbs-container *::before,
.kfbs-container *::after {
    box-sizing: border-box;
}

.kfbs-container {
    position: fixed;
    z-index: var(--kfbs-z, 9998);
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
}

body.kfbs-no-scroll {
    overflow: hidden;
}

/* ---------- POSITIONING ---------- */
.kfbs-pos-right { right: 0; top: var(--kfbs-v-offset, 50%); transform: translateY(-50%); }
.kfbs-pos-left  { left: 0;  top: var(--kfbs-v-offset, 50%); transform: translateY(-50%); }
.kfbs-pos-bottom-right { right: 20px; bottom: 20px; }
.kfbs-pos-bottom-left  { left: 20px;  bottom: 20px; }

/* ---------- TOGGLE BUTTON (base) ---------- */
.kfbs-toggle {
    width: var(--kfbs-btn-size, 60px);
    height: var(--kfbs-btn-size, 60px);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--kfbs-text, #fff);
    background: linear-gradient(135deg, var(--kfbs-primary), var(--kfbs-secondary));
    transition: transform .35s cubic-bezier(.25,.46,.45,.94), box-shadow .35s ease, background .35s ease;
    position: relative;
    box-shadow: var(--kfbs-shadow);
    outline: none;
    padding: 0;
    font: inherit;
}

.kfbs-toggle .kfbs-icon {
    width: 55%;
    height: 55%;
    display: block;
    line-height: 0;
    position: relative;
    z-index: 2;
}
.kfbs-toggle .kfbs-icon svg { width: 100%; height: 100%; display: block; }

/* Pulse ring (decoration) */
.kfbs-pulse-ring {
    position: absolute;
    inset: 0;
    border-radius: inherit;
    pointer-events: none;
    opacity: 0;
}

/* Border-radius zależny od pozycji (przyklejone do krawędzi = pół-zaokrąglone) */
.kfbs-pos-right .kfbs-toggle { border-radius: var(--kfbs-radius) 0 0 var(--kfbs-radius); }
.kfbs-pos-left  .kfbs-toggle { border-radius: 0 var(--kfbs-radius) var(--kfbs-radius) 0; }
.kfbs-pos-bottom-right .kfbs-toggle,
.kfbs-pos-bottom-left  .kfbs-toggle { border-radius: 50%; }

.kfbs-toggle:hover { transform: translateY(-50%) scale(1.05); }
.kfbs-pos-bottom-right .kfbs-toggle:hover,
.kfbs-pos-bottom-left  .kfbs-toggle:hover { transform: scale(1.08); }

/* ---------- PANEL (base) ---------- */
.kfbs-panel {
    position: fixed;
    width: var(--kfbs-panel-w, 350px);
    max-width: calc(100vw - 24px);
    height: var(--kfbs-panel-h, 550px);
    max-height: 90vh;
    background: var(--kfbs-bg, #fff);
    color: #1d2129;
    box-shadow: var(--kfbs-shadow);
    border-radius: 16px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity .4s ease, transform .4s cubic-bezier(.25,.46,.45,.94), visibility .4s;
    z-index: calc(var(--kfbs-z, 9998) + 1);
}

/* Pozycjonowanie panelu względem button */
.kfbs-pos-right .kfbs-panel {
    right: calc(var(--kfbs-btn-size) + 10px);
    top: var(--kfbs-v-offset, 50%);
    transform: translateY(-50%) translateX(20px);
}
.kfbs-pos-left .kfbs-panel {
    left: calc(var(--kfbs-btn-size) + 10px);
    top: var(--kfbs-v-offset, 50%);
    transform: translateY(-50%) translateX(-20px);
}
.kfbs-pos-bottom-right .kfbs-panel {
    right: 20px;
    bottom: calc(var(--kfbs-btn-size) + 30px);
    transform: translateY(20px) scale(.95);
    transform-origin: bottom right;
}
.kfbs-pos-bottom-left .kfbs-panel {
    left: 20px;
    bottom: calc(var(--kfbs-btn-size) + 30px);
    transform: translateY(20px) scale(.95);
    transform-origin: bottom left;
}

/* Stan otwarty - WSPÓLNE */
.kfbs-container.is-open .kfbs-panel {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}
.kfbs-pos-right.is-open  .kfbs-panel { transform: translateY(-50%) translateX(0); }
.kfbs-pos-left.is-open   .kfbs-panel { transform: translateY(-50%) translateX(0); }
.kfbs-pos-bottom-right.is-open .kfbs-panel,
.kfbs-pos-bottom-left.is-open  .kfbs-panel { transform: translateY(0) scale(1); }

/* ---------- HEADER ---------- */
.kfbs-header {
    background: linear-gradient(135deg, var(--kfbs-primary), var(--kfbs-secondary));
    color: var(--kfbs-text, #fff);
    padding: 16px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-shrink: 0;
}
.kfbs-header h3 {
    margin: 0;
    font-size: 16px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
    line-height: 1.2;
}
.kfbs-header-icon { width: 22px; height: 22px; display: inline-flex; }
.kfbs-header-icon svg { width: 100%; height: 100%; }

.kfbs-close {
    background: rgba(255,255,255,.15);
    border: none;
    color: inherit;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: background .2s ease, transform .2s ease;
    padding: 0;
}
.kfbs-close:hover { background: rgba(255,255,255,.3); transform: rotate(90deg); }

/* ---------- CONTENT ---------- */
.kfbs-content {
    flex: 1 1 auto;
    padding: 14px;
    overflow-y: auto;
    overscroll-behavior: contain;
    background: #f5f6f7;
    min-height: 0;
}
.kfbs-content .fb-page { width: 100% !important; max-width: 100%; }

.kfbs-fallback { display: none; text-align: center; padding: 24px 12px; }
.kfbs-fallback.is-visible { display: block; }
.kfbs-fallback-btn {
    display: inline-block;
    margin-top: 12px;
    padding: 10px 22px;
    background: var(--kfbs-primary);
    color: var(--kfbs-text);
    text-decoration: none;
    border-radius: 24px;
    font-weight: 600;
}

/* ---------- OVERLAY (tylko mobile) ---------- */
.kfbs-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,.55);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity .3s ease, visibility .3s;
    z-index: calc(var(--kfbs-z, 9998) - 1);
}
.kfbs-container.is-open .kfbs-overlay { opacity: 1; visibility: visible; pointer-events: auto; }

/* =======================================================
   STYLE PRESETS
   ======================================================= */

/* ---- 1. CLASSIC (Facebook blue) ---- */
.kfbs-style-classic .kfbs-toggle {
    background: linear-gradient(135deg, #1877f2, #166fe5);
}
.kfbs-style-classic .kfbs-header {
    background: linear-gradient(135deg, #1877f2, #166fe5);
}

/* ---- 2. iOS GLASS (Glassmorphism) ---- */
.kfbs-style-ios_glass .kfbs-toggle {
    background: linear-gradient(135deg, color-mix(in srgb, var(--kfbs-primary) 75%, transparent), color-mix(in srgb, var(--kfbs-secondary) 75%, transparent));
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: 1px solid rgba(255,255,255,.25);
    box-shadow: 0 8px 32px rgba(0,0,0,.25), inset 0 1px 0 rgba(255,255,255,.4);
}
.kfbs-style-ios_glass .kfbs-panel {
    background: rgba(255,255,255,.65);
    backdrop-filter: blur(30px) saturate(180%);
    -webkit-backdrop-filter: blur(30px) saturate(180%);
    border: 1px solid rgba(255,255,255,.3);
    box-shadow: 0 20px 60px rgba(0,0,0,.25);
    border-radius: 24px;
}
.kfbs-style-ios_glass .kfbs-header {
    background: linear-gradient(135deg, color-mix(in srgb, var(--kfbs-primary) 85%, transparent), color-mix(in srgb, var(--kfbs-secondary) 85%, transparent));
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}
.kfbs-style-ios_glass .kfbs-content { background: rgba(245,246,247,.5); }

/* ---- 3. 3D NEUMORPHISM ---- */
.kfbs-style-neumorphism_3d .kfbs-toggle {
    background: linear-gradient(145deg, var(--kfbs-primary), var(--kfbs-secondary));
    box-shadow:
        9px 9px 18px rgba(0,0,0,.25),
        -3px -3px 12px rgba(255,255,255,.15),
        inset 1px 1px 2px rgba(255,255,255,.2),
        inset -1px -1px 2px rgba(0,0,0,.2);
    transform-style: preserve-3d;
}
.kfbs-style-neumorphism_3d .kfbs-toggle:hover {
    box-shadow:
        12px 12px 24px rgba(0,0,0,.3),
        -4px -4px 16px rgba(255,255,255,.18),
        inset 1px 1px 2px rgba(255,255,255,.3),
        inset -1px -1px 2px rgba(0,0,0,.25);
}
.kfbs-style-neumorphism_3d .kfbs-panel {
    background: #e6e7ee;
    border-radius: 28px;
    box-shadow:
        16px 16px 40px rgba(174,174,192,.4),
        -16px -16px 40px rgba(255,255,255,.8);
}
.kfbs-style-neumorphism_3d .kfbs-header {
    background: linear-gradient(145deg, var(--kfbs-primary), var(--kfbs-secondary));
    border-radius: 28px 28px 0 0;
    box-shadow: inset 0 -2px 6px rgba(0,0,0,.15);
}
.kfbs-style-neumorphism_3d .kfbs-content { background: #e6e7ee; }

/* ---- 4. NEON GLOW ---- */
.kfbs-style-neon .kfbs-toggle {
    background: #0a0a0f;
    border: 2px solid var(--kfbs-primary);
    box-shadow:
        0 0 12px var(--kfbs-primary),
        0 0 24px var(--kfbs-primary),
        inset 0 0 12px rgba(24,119,242,.3);
    color: var(--kfbs-primary);
    animation: kfbs-neon-pulse 2.4s ease-in-out infinite;
}
@keyframes kfbs-neon-pulse {
    0%, 100% { box-shadow: 0 0 10px var(--kfbs-primary), 0 0 20px var(--kfbs-primary), inset 0 0 10px rgba(24,119,242,.3); }
    50%      { box-shadow: 0 0 20px var(--kfbs-primary), 0 0 40px var(--kfbs-primary), inset 0 0 18px rgba(24,119,242,.5); }
}
.kfbs-style-neon .kfbs-panel {
    background: #0a0a0f;
    color: #e0e0e8;
    border: 1px solid var(--kfbs-primary);
    box-shadow:
        0 0 30px rgba(24,119,242,.4),
        0 0 60px rgba(24,119,242,.2);
    border-radius: 18px;
}
.kfbs-style-neon .kfbs-header {
    background: linear-gradient(135deg, #0a0a0f, #15151f);
    border-bottom: 1px solid var(--kfbs-primary);
    color: var(--kfbs-primary);
    text-shadow: 0 0 8px var(--kfbs-primary);
}
.kfbs-style-neon .kfbs-content { background: #0a0a0f; }
.kfbs-style-neon .kfbs-close { background: rgba(24,119,242,.15); color: var(--kfbs-primary); }

/* ---- 5. DARK MODE ---- */
.kfbs-style-dark .kfbs-toggle {
    background: linear-gradient(135deg, #1a1a1f, #2a2a35);
    border: 1px solid rgba(255,255,255,.08);
}
.kfbs-style-dark .kfbs-panel {
    background: #1a1a1f;
    color: #e6e6ec;
    border: 1px solid rgba(255,255,255,.08);
}
.kfbs-style-dark .kfbs-header {
    background: linear-gradient(135deg, #2a2a35, #1a1a1f);
    border-bottom: 1px solid rgba(255,255,255,.06);
}
.kfbs-style-dark .kfbs-content { background: #15151b; }

/* ---- 6. GRADIENT (animowany) ---- */
.kfbs-style-gradient .kfbs-toggle {
    background: linear-gradient(125deg, var(--kfbs-primary), var(--kfbs-secondary), var(--kfbs-accent), var(--kfbs-primary));
    background-size: 300% 300%;
    animation: kfbs-gradient-shift 6s ease infinite;
}
.kfbs-style-gradient .kfbs-header {
    background: linear-gradient(125deg, var(--kfbs-primary), var(--kfbs-secondary), var(--kfbs-accent), var(--kfbs-primary));
    background-size: 300% 300%;
    animation: kfbs-gradient-shift 8s ease infinite;
}
@keyframes kfbs-gradient-shift {
    0%   { background-position: 0%   50%; }
    50%  { background-position: 100% 50%; }
    100% { background-position: 0%   50%; }
}

/* ---- 7. MINIMAL ---- */
.kfbs-style-minimal .kfbs-toggle {
    background: var(--kfbs-bg, #fff);
    color: var(--kfbs-primary);
    border: 1px solid rgba(0,0,0,.08);
    box-shadow: 0 2px 8px rgba(0,0,0,.06);
}
.kfbs-style-minimal .kfbs-toggle:hover {
    background: var(--kfbs-primary);
    color: var(--kfbs-text);
}
.kfbs-style-minimal .kfbs-panel {
    background: #fff;
    border: 1px solid rgba(0,0,0,.08);
    box-shadow: 0 8px 28px rgba(0,0,0,.12);
    border-radius: 12px;
}
.kfbs-style-minimal .kfbs-header {
    background: #fafafa;
    color: #1d2129;
    border-bottom: 1px solid rgba(0,0,0,.06);
}
.kfbs-style-minimal .kfbs-content { background: #fff; }

/* =======================================================
   ENTRY ANIMATIONS (kiedy strona się ładuje)
   ======================================================= */

.kfbs-entry-slide_in .kfbs-toggle { animation: kfbs-slide-in .6s ease-out 1s both; }
@keyframes kfbs-slide-in {
    from { transform: translateX(var(--kfbs-slide-from, -100%)); opacity: 0; }
    to   { transform: translateX(0); opacity: 1; }
}
.kfbs-pos-right.kfbs-entry-slide_in { --kfbs-slide-from: 100%; }
.kfbs-pos-left.kfbs-entry-slide_in  { --kfbs-slide-from: -100%; }

.kfbs-entry-fade .kfbs-toggle { animation: kfbs-fade-in .8s ease-out 1s both; }
@keyframes kfbs-fade-in { from { opacity: 0; } to { opacity: 1; } }

.kfbs-entry-bounce .kfbs-toggle { animation: kfbs-bounce-in .9s cubic-bezier(.68,-.55,.27,1.55) 1s both; }
@keyframes kfbs-bounce-in {
    0%   { transform: scale(0) translateY(-50%); opacity: 0; }
    60%  { transform: scale(1.15) translateY(-50%); opacity: 1; }
    100% { transform: scale(1) translateY(-50%); }
}

.kfbs-entry-flip3d .kfbs-toggle { animation: kfbs-flip3d 1s ease-out 1s both; transform-style: preserve-3d; }
@keyframes kfbs-flip3d {
    from { transform: perspective(600px) rotateY(180deg) translateY(-50%); opacity: 0; }
    to   { transform: perspective(600px) rotateY(0)      translateY(-50%); opacity: 1; }
}

.kfbs-entry-rotate3d .kfbs-toggle { animation: kfbs-rotate3d 1s ease-out 1s both; transform-style: preserve-3d; }
@keyframes kfbs-rotate3d {
    from { transform: perspective(600px) rotateX(90deg) translateY(-50%); opacity: 0; }
    to   { transform: perspective(600px) rotateX(0)     translateY(-50%); opacity: 1; }
}

.kfbs-entry-pulse .kfbs-toggle {
    animation: kfbs-pulse-in .6s ease-out 1s both;
}
.kfbs-entry-pulse .kfbs-pulse-ring {
    animation: kfbs-pulse-ring 2.2s ease-out 2s infinite;
    border: 2px solid var(--kfbs-primary);
    opacity: .6;
}
@keyframes kfbs-pulse-in { from { transform: scale(0) translateY(-50%); } to { transform: scale(1) translateY(-50%); } }
@keyframes kfbs-pulse-ring {
    0%   { transform: scale(1);   opacity: .7; }
    100% { transform: scale(1.8); opacity: 0; }
}

/* Wyłącz translateY w pulse-ring dla bottom positions */
.kfbs-pos-bottom-right .kfbs-toggle,
.kfbs-pos-bottom-left  .kfbs-toggle {
    animation-name: kfbs-bottom-entry;
}
@keyframes kfbs-bottom-entry {
    from { transform: scale(0); opacity: 0; }
    to   { transform: scale(1); opacity: 1; }
}

/* =======================================================
   OPEN ANIMATIONS (panel)
   ======================================================= */

.kfbs-open-flip .kfbs-panel {
    transform-style: preserve-3d;
    perspective: 1000px;
}
.kfbs-pos-right.kfbs-open-flip .kfbs-panel  { transform: translateY(-50%) perspective(1000px) rotateY(-25deg); transform-origin: right center; }
.kfbs-pos-left.kfbs-open-flip  .kfbs-panel  { transform: translateY(-50%) perspective(1000px) rotateY( 25deg); transform-origin: left center; }
.kfbs-pos-right.kfbs-open-flip.is-open .kfbs-panel { transform: translateY(-50%) perspective(1000px) rotateY(0); }
.kfbs-pos-left.kfbs-open-flip.is-open  .kfbs-panel { transform: translateY(-50%) perspective(1000px) rotateY(0); }

.kfbs-pos-right.kfbs-open-scale .kfbs-panel { transform: translateY(-50%) scale(.85); }
.kfbs-pos-left.kfbs-open-scale  .kfbs-panel { transform: translateY(-50%) scale(.85); }
.kfbs-pos-right.kfbs-open-scale.is-open .kfbs-panel,
.kfbs-pos-left.kfbs-open-scale.is-open  .kfbs-panel { transform: translateY(-50%) scale(1); }

.kfbs-pos-right.kfbs-open-rotate .kfbs-panel { transform: translateY(-50%) rotate(8deg) translateX(20px); transform-origin: top right; }
.kfbs-pos-left.kfbs-open-rotate  .kfbs-panel { transform: translateY(-50%) rotate(-8deg) translateX(-20px); transform-origin: top left; }
.kfbs-pos-right.kfbs-open-rotate.is-open .kfbs-panel,
.kfbs-pos-left.kfbs-open-rotate.is-open  .kfbs-panel { transform: translateY(-50%) rotate(0) translateX(0); }

.kfbs-pos-right.kfbs-open-reveal .kfbs-panel { clip-path: inset(0 100% 0 0); transform: translateY(-50%); transform-origin: left center; }
.kfbs-pos-left.kfbs-open-reveal  .kfbs-panel { clip-path: inset(0 0 0 100%); transform: translateY(-50%); transform-origin: right center; }
.kfbs-pos-right.kfbs-open-reveal.is-open .kfbs-panel,
.kfbs-pos-left.kfbs-open-reveal.is-open  .kfbs-panel { clip-path: inset(0); }

/* =======================================================
   MOBILE - panel zawsze od dołu (bottom sheet)
   ======================================================= */
@media (max-width: 768px) {
    .kfbs-container.kfbs-hide-mobile { display: none; }

    .kfbs-pos-right, .kfbs-pos-left {
        top: auto;
        bottom: 20px;
        transform: none;
    }
    .kfbs-pos-right { right: 14px; left: auto; }
    .kfbs-pos-left  { left: 14px;  right: auto; }

    .kfbs-toggle {
        border-radius: 50% !important;
        width: min(var(--kfbs-btn-size), 56px);
        height: min(var(--kfbs-btn-size), 56px);
    }

    .kfbs-panel {
        position: fixed;
        left: 0 !important;
        right: 0 !important;
        bottom: 0 !important;
        top: auto !important;
        width: 100% !important;
        max-width: 100% !important;
        height: 80vh !important;
        max-height: 600px !important;
        border-radius: 22px 22px 0 0 !important;
        transform: translateY(100%) !important;
        clip-path: none !important;
    }
    .kfbs-container.is-open .kfbs-panel { transform: translateY(0) !important; }

    .kfbs-header { padding: 14px 16px; }
    .kfbs-header h3 { font-size: 15px; }
}

@media (max-width: 320px) {
    .kfbs-container { display: none; }
}

/* =======================================================
   REDUCED MOTION
   ======================================================= */
@media (prefers-reduced-motion: reduce) {
    .kfbs-toggle, .kfbs-panel, .kfbs-overlay, .kfbs-close, .kfbs-pulse-ring {
        animation: none !important;
        transition: opacity .2s ease, visibility .2s !important;
    }
}