/* ===========================================
   MIBR Advanced Slider Pro v4.0
   Dynamic Viewport + Performance + Modern
   =========================================== */

/* CSS Custom Properties */
:root {
    --mibr-primary: #4a3f9f;
    --mibr-secondary: #6B7FFF;
    --mibr-accent: #00d4ff;
    --mibr-text: #ffffff;
    --mibr-text-secondary: rgba(255, 255, 255, 0.75);
    --mibr-bg-overlay: #000000;
    --mibr-nav-active: #ffffff;
    --mibr-nav-inactive: #505050;
    
    /* Spacing Scale */
    --space-xs: clamp(4px, 0.5vw, 8px);
    --space-sm: clamp(8px, 1vw, 12px);
    --space-md: clamp(12px, 1.5vw, 20px);
    --space-lg: clamp(20px, 2.5vw, 32px);
    --space-xl: clamp(32px, 4vw, 48px);
    --space-2xl: clamp(48px, 6vw, 80px);
    
    /* Typography Scale */
    --text-xs: clamp(10px, 1vw, 12px);
    --text-sm: clamp(12px, 1.2vw, 14px);
    --text-base: clamp(14px, 1.4vw, 16px);
    --text-lg: clamp(16px, 1.8vw, 20px);
    --text-xl: clamp(20px, 2.5vw, 28px);
    --text-2xl: clamp(28px, 4vw, 42px);
    --text-3xl: clamp(36px, 5vw, 56px);
    --text-4xl: clamp(48px, 6vw, 72px);
    
    /* Transitions */
    --transition-fast: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-spring: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* Reset & Base */
.mibr-slider-wrapper,
.mibr-slider-wrapper * {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

/* Main Container - Dynamic Viewport */
.mibr-slider-wrapper {
    position: relative;
    width: 100%;
    height: 100vh;
    height: 100dvh;
    height: 100svh;
    min-height: 500px;
    max-height: 100vh;
    max-height: 100dvh;
    background: var(--mibr-bg-overlay);
    overflow: hidden;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    touch-action: pan-y pinch-zoom;
    user-select: none;
    -webkit-user-select: none;
    contain: layout style paint;
}

/* ===========================================
   SOCIAL SIDEBAR
   =========================================== */
.mibr-social-sidebar {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    z-index: 100;
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    padding: var(--space-lg);
}

.mibr-social-icon {
    width: clamp(20px, 2.5vw, 26px);
    height: clamp(20px, 2.5vw, 26px);
    color: var(--mibr-text);
    opacity: 0.7;
    transition: all var(--transition-base);
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.mibr-social-icon::before {
    content: '';
    position: absolute;
    inset: -8px;
    background: radial-gradient(circle, var(--mibr-secondary) 0%, transparent 70%);
    opacity: 0;
    transition: opacity var(--transition-base);
    border-radius: 50%;
    z-index: -1;
}

.mibr-social-icon svg {
    width: 100%;
    height: 100%;
    filter: drop-shadow(0 2px 4px rgba(0,0,0,0.3));
}

.mibr-social-icon:hover {
    opacity: 1;
    color: var(--mibr-secondary);
    transform: scale(1.15) translateX(3px);
}

.mibr-social-icon:hover::before {
    opacity: 0.3;
}

/* ===========================================
   DRAG HINT
   =========================================== */
.mibr-drag-hint {
    position: absolute;
    bottom: clamp(100px, 15vh, 140px);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--mibr-text-secondary);
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 2px;
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
    z-index: 5;
}

.mibr-slider-wrapper:hover .mibr-drag-hint {
    opacity: 0.6;
}

.mibr-drag-hint svg {
    width: 14px;
    height: 14px;
    animation: swipeHint 2s ease-in-out infinite;
}

.mibr-drag-hint svg:first-child {
    animation-delay: 0s;
}

.mibr-drag-hint svg:last-child {
    animation-delay: 0.5s;
}

@keyframes swipeHint {
    0%, 100% { transform: translateX(0); opacity: 0.5; }
    50% { transform: translateX(5px); opacity: 1; }
}

/* ===========================================
   SLIDER CONTAINER & TRACK
   =========================================== */
.mibr-slider-container {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.mibr-slider-track {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    transition: transform var(--transition-slow);
    will-change: transform;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
}

.mibr-slider-track.dragging {
    transition: none;
    cursor: grabbing;
}

/* ===========================================
   SLIDE
   =========================================== */
.mibr-slide {
    position: relative;
    flex: 0 0 100%;
    width: 100%;
    height: 100%;
    overflow: hidden;
    backface-visibility: hidden;
}

/* Background Image */
.mibr-slide-bg {
    position: absolute;
    inset: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    transform: scale(1.08);
    transition: transform 10s ease-out;
    will-change: transform;
}

.mibr-slide.active .mibr-slide-bg {
    transform: scale(1);
}

/* Ken Burns Effect */
.mibr-slider-wrapper[data-ken-burns="true"] .mibr-slide.active .mibr-slide-bg {
    animation: kenBurns 20s ease-in-out infinite alternate;
}

@keyframes kenBurns {
    0% { transform: scale(1) translate(0, 0); }
    100% { transform: scale(1.1) translate(-2%, -1%); }
}

/* Overlay */
.mibr-slide-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        105deg,
        color-mix(in srgb, var(--mibr-bg-overlay) 92%, transparent) 0%,
        color-mix(in srgb, var(--mibr-bg-overlay) 75%, transparent) 25%,
        color-mix(in srgb, var(--mibr-bg-overlay) 50%, transparent) 45%,
        color-mix(in srgb, var(--mibr-bg-overlay) 25%, transparent) 65%,
        transparent 100%
    );
    z-index: 2;
}

/* ===========================================
   SLIDE CONTENT
   =========================================== */
.mibr-slide-content {
    position: relative;
    z-index: 3;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    padding: var(--space-2xl) var(--space-xl) clamp(120px, 18vh, 160px) clamp(80px, 10vw, 140px);
}

.mibr-slide-text {
    max-width: min(600px, 55vw);
    opacity: 0;
    transform: translateY(30px);
}

.mibr-slide.active .mibr-slide-text {
    animation: slideInUp 0.8s var(--transition-spring) 0.2s forwards;
}

@keyframes slideInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Meta Info */
.mibr-slide-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm);
    margin-bottom: var(--space-sm);
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--mibr-text-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.mibr-meta-item {
    display: inline-flex;
    align-items: center;
}

.mibr-meta-item:not(:last-child)::after {
    content: '';
    display: inline-block;
    width: 4px;
    height: 4px;
    background: var(--mibr-accent);
    border-radius: 50%;
    margin-left: var(--space-sm);
}

.mibr-meta-cat {
    color: var(--mibr-accent);
    font-weight: 700;
}

/* Subtitle */
.mibr-slide-subtitle {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--mibr-accent);
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: var(--space-sm);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.mibr-slide-subtitle::before {
    content: '';
    width: 24px;
    height: 2px;
    background: var(--mibr-accent);
}

/* Title */
.mibr-slide-title {
    font-size: var(--text-3xl);
    font-weight: 800;
    color: var(--mibr-text);
    margin: 0 0 var(--space-md) 0;
    line-height: 1.05;
    letter-spacing: -0.02em;
    text-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
}

/* Description */
.mibr-slide-description {
    font-size: var(--text-base);
    color: var(--mibr-text-secondary);
    line-height: 1.7;
    margin: 0 0 var(--space-lg) 0;
    padding-left: var(--space-md);
    border-left: 3px solid var(--mibr-secondary);
    max-width: min(480px, 45vw);
}

/* Button */
.mibr-slide-button {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: linear-gradient(135deg, var(--mibr-primary) 0%, color-mix(in srgb, var(--mibr-primary) 80%, var(--mibr-secondary)) 100%);
    color: var(--mibr-text);
    text-decoration: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: var(--text-sm);
    letter-spacing: 0.5px;
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    transition: all var(--transition-base);
    box-shadow: 0 4px 20px color-mix(in srgb, var(--mibr-primary) 40%, transparent);
}

.mibr-slide-button::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transform: translateX(-100%);
    transition: transform 0.6s ease;
}

.mibr-slide-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px color-mix(in srgb, var(--mibr-primary) 50%, transparent);
}

.mibr-slide-button:hover::before {
    transform: translateX(100%);
}

.mibr-slide-button svg {
    width: 16px;
    height: 16px;
    transition: transform var(--transition-base);
}

.mibr-slide-button:hover svg {
    transform: translateX(4px);
}

/* ===========================================
   PAGINATION DOTS (Mobile)
   =========================================== */
.mibr-pagination-dots {
    position: absolute;
    bottom: clamp(20px, 4vh, 30px);
    left: 50%;
    transform: translateX(-50%);
    display: none;
    align-items: center;
    gap: var(--space-sm);
    z-index: 10;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(10px);
    padding: var(--space-sm) var(--space-md);
    border-radius: 20px;
}

.mibr-pagination-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--mibr-nav-inactive);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
    padding: 0;
    opacity: 0.5;
}

.mibr-pagination-dot.active {
    background: var(--mibr-secondary);
    width: 28px;
    border-radius: 4px;
    opacity: 1;
}

.mibr-pagination-dot:hover {
    opacity: 0.8;
}

/* ===========================================
   RESPONSIVE
   =========================================== */
@media (max-width: 1024px) {
    .mibr-slide-content {
        padding: var(--space-xl) var(--space-lg) clamp(100px, 15vh, 140px) clamp(60px, 8vw, 100px);
    }
    
    .mibr-slide-text {
        max-width: min(500px, 60vw);
    }
}

@media (max-width: 768px) {
    .mibr-social-sidebar,
    .mibr-drag-hint {
        display: none !important;
    }
    
    .mibr-slide-content {
        padding: var(--space-xl) var(--space-md) clamp(100px, 20vh, 140px);
        align-items: flex-end;
    }
    
    .mibr-slide-text {
        max-width: 100%;
        width: 100%;
    }
    
    .mibr-slide-overlay {
        background: linear-gradient(
            180deg,
            color-mix(in srgb, var(--mibr-bg-overlay) 50%, transparent) 0%,
            color-mix(in srgb, var(--mibr-bg-overlay) 70%, transparent) 30%,
            color-mix(in srgb, var(--mibr-bg-overlay) 90%, transparent) 70%,
            var(--mibr-bg-overlay) 100%
        );
    }
    
    .mibr-slide-title {
        font-size: var(--text-2xl);
        margin-bottom: var(--space-sm);
    }
    
    .mibr-slide-description {
        font-size: var(--text-sm);
        margin-bottom: var(--space-md);
        padding-left: var(--space-sm);
        max-width: 100%;
    }
    
    .mibr-slide-button {
        padding: var(--space-sm) var(--space-lg);
    }
    
    .mibr-pagination-dots {
        display: flex;
    }
}

@media (max-width: 480px) {
    .mibr-slide-content {
        padding: var(--space-lg) var(--space-sm) 110px;
    }
    
    .mibr-slide-title {
        font-size: var(--text-xl);
    }
    
    .mibr-slide-description {
        font-size: var(--text-xs);
        line-height: 1.6;
    }
}

@media (max-height: 500px) and (orientation: landscape) {
    .mibr-slider-wrapper {
        min-height: 100vh;
        min-height: 100dvh;
    }
    
    .mibr-slide-content {
        padding: 30px 40px 80px 80px;
        align-items: center;
    }
    
    .mibr-slide-title {
        font-size: var(--text-xl);
    }
    
    .mibr-slide-description {
        font-size: var(--text-xs);
        margin-bottom: var(--space-sm);
    }
    
    .mibr-social-sidebar {
        display: none !important;
    }
}

/* ===========================================
   ACCESSIBILITY
   =========================================== */
@media (prefers-reduced-motion: reduce) {
    .mibr-slider-track,
    .mibr-slide-bg,
    .mibr-slide-text,
    .mibr-social-icon,
    .mibr-slide-button {
        transition: none !important;
        animation: none !important;
    }
    
    .mibr-slide-text {
        opacity: 1 !important;
        transform: none !important;
    }
}

/* Focus States */
.mibr-slide-button:focus,
.mibr-social-icon:focus {
    outline: 2px solid var(--mibr-secondary);
    outline-offset: 4px;
}

/* ===========================================
   PERFORMANCE
   =========================================== */
.mibr-slide-bg {
    content-visibility: auto;
}

/* Only hide content for standard slide effect */
.mibr-slider-wrapper:not(.effect-fade):not(.effect-cube) .mibr-slide:not(.active) .mibr-slide-bg {
    content-visibility: hidden;
}

/* ===========================================
   TRANSITION EFFECTS
   =========================================== */

/* Effect: Fade */
.mibr-slider-wrapper.effect-fade .mibr-slider-track {
    display: grid;
    grid-template-areas: "stack";
    transform: none !important;
}

.mibr-slider-wrapper.effect-fade .mibr-slide {
    grid-area: stack;
    opacity: 0;
    z-index: 1;
    transition: opacity var(--transition-slow);
}

.mibr-slider-wrapper.effect-fade .mibr-slide.active {
    opacity: 1;
    z-index: 2;
}

/* Effect: Cube (Simplified 3D) */
.mibr-slider-wrapper.effect-cube {
    perspective: 1000px;
}

.mibr-slider-wrapper.effect-cube .mibr-slider-track {
    display: grid;
    grid-template-areas: "stack";
    transform: none !important;
    transform-style: preserve-3d;
}

.mibr-slider-wrapper.effect-cube .mibr-slide {
    grid-area: stack;
    opacity: 0;
    transform: rotateY(90deg) scale(0.8);
    transform-origin: center;
    transition: all 0.8s cubic-bezier(0.645, 0.045, 0.355, 1);
    visibility: hidden;
    z-index: 1;
}

.mibr-slider-wrapper.effect-cube .mibr-slide.active {
    opacity: 1;
    transform: rotateY(0deg) scale(1);
    visibility: visible;
    z-index: 2;
}

/* Effect: Cover (Parallax Slide) */
.mibr-slider-wrapper.effect-cover .mibr-slider-track {
    display: grid;
    grid-template-areas: "stack";
    transform: none !important;
}

.mibr-slider-wrapper.effect-cover .mibr-slide {
    grid-area: stack;
    opacity: 0;
    z-index: 1;
    transition: all var(--transition-slow);
    transform: scale(1.1);
    filter: brightness(0.5);
}

.mibr-slider-wrapper.effect-cover .mibr-slide.active {
    opacity: 1;
    z-index: 2;
    transform: scale(1);
    filter: brightness(1);
}