/* Presentation Framework Styles
   ========================================================= */

/* CSS Variables - Brand Colors */
:root {
    /* Primary Colors */
    --primary-blue: #4084ef;
    --primary-dark: #231f20;

    /* Secondary Colors */
    --cyan: #00aeef;
    --blue: #2b47da;
    --purple: #5438d4;
    --deep-purple: #4d006e;
    --magenta: #c41ead;

    /* Neutral Colors */
    --white: #ffffff;

    /* Typography */
    --font-headline: Arial, Helvetica, sans-serif;
    --font-body: Arial, Helvetica, sans-serif;

    /* Transitions */
    --transition-normal: 0.5s ease;
    --transition-slow: 1s ease;
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
}

html, body {
    height: 100%;
    overflow: hidden;
}

body {
    font-family: var(--font-body);
    background: #000;
    color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    display: flex;
    justify-content: center;
    align-items: center;
}

/* =============================================
   PRELOADER
   ============================================= */
.preloader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: linear-gradient(135deg, #1a1a2e 0%, #0f0f1a 50%, #1a0a2e 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

.preloader.hidden {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.preloader-content {
    text-align: center;
    max-width: 500px;
    padding: 2rem;
}

.preloader-logo {
    width: 200px;
    margin-bottom: 1.5rem;
    animation: preloaderPulse 2s ease-in-out infinite;
}

@keyframes preloaderPulse {
    0%, 100% { opacity: 0.8; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.05); }
}

.preloader-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 2rem;
    letter-spacing: 0.1em;
}

.preloader-progress-container {
    width: 100%;
    height: 8px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 1rem;
}

.preloader-progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--cyan), var(--purple), var(--magenta));
    border-radius: 4px;
    transition: width 0.3s ease;
}

.preloader-percent {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--cyan);
    margin-bottom: 0.5rem;
}

.preloader-status {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

body.loading .slides-container,
body.loading .slide-nav {
    visibility: hidden;
}

/* =============================================
   SLIDES CONTAINER
   ============================================= */
.slides-container {
    width: 100vw;
    height: 100vh;
    max-width: 177.78vh; /* 16:9 ratio (100vh * 16/9) */
    max-height: 56.25vw; /* 16:9 ratio (100vw * 9/16) */
    overflow: hidden;
    position: relative;
}

/* Scale adjustments for different screen sizes */
@media screen and (min-width: 1920px) {
    html { font-size: 18px; }
}

@media screen and (max-width: 1600px) {
    html { font-size: 15px; }
}

@media screen and (max-width: 1366px) {
    html { font-size: 14px; }
}

@media screen and (max-width: 1024px) {
    html { font-size: 12px; }
}

/* =============================================
   CIRCLE EXPAND TRANSITION OVERLAY
   ============================================= */
.slide-transition-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1000;
    pointer-events: none;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
}

.slide-transition-overlay .transition-circle {
    position: absolute;
    top: 50%;
    left: 50%;
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: var(--primary-blue);
    transform: translate(-50%, -50%) scale(0);
    opacity: 0;
}

/* =============================================
   ALVARO FUTURISTIC PANELS TRANSITION
   ============================================= */
.alvaro-transition-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    pointer-events: none;
}

.alvaro-panel {
    position: absolute;
    width: 100%;
    height: 100%;
    background: var(--primary-blue);
    transition: clip-path 0.6s cubic-bezier(0.77, 0, 0.175, 1);
}

.alvaro-panel-top {
    clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
}

.alvaro-panel-bottom {
    clip-path: polygon(0 100%, 100% 100%, 100% 100%, 0 100%);
}

.alvaro-transition-overlay.closing .alvaro-panel-top {
    clip-path: polygon(0 0, 100% 0, 100% 55%, 0 45%);
}

.alvaro-transition-overlay.closing .alvaro-panel-bottom {
    clip-path: polygon(0 45%, 100% 55%, 100% 100%, 0 100%);
}

.alvaro-transition-overlay.opening .alvaro-panel-top {
    clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
    transition: clip-path 0.6s cubic-bezier(0.77, 0, 0.175, 1);
}

.alvaro-transition-overlay.opening .alvaro-panel-bottom {
    clip-path: polygon(0 100%, 100% 100%, 100% 100%, 0 100%);
    transition: clip-path 0.6s cubic-bezier(0.77, 0, 0.175, 1);
}

/* =============================================
   LOGO SHRINK / EXPAND TRANSITION
   ============================================= */
.slide.logo-shrinking {
    opacity: 1 !important;
    visibility: visible !important;
    transition: none !important;
}

.slide.logo-transition-in {
    transition: none !important;
    opacity: 1 !important;
    visibility: visible !important;
}

.slide.logo-transition-in .slide-content {
    opacity: 0;
}

.slide.logo-transition-in.content-fade-in .slide-content {
    opacity: 1;
    transition: opacity 0.5s ease-out;
}

.slide.logo-expanding {
    opacity: 1 !important;
    visibility: visible !important;
}

.slide.logo-expanding .slide-content {
    transition: opacity 1.8s ease-out;
}

/* =============================================
   INDIVIDUAL SLIDE
   ============================================= */
.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.7s ease, visibility 0.7s ease;
    transform: scale(1);
}

.slide.active {
    opacity: 1;
    visibility: visible;
}

.slide.prev {
    opacity: 0;
}

.slide.next {
    opacity: 0;
}

/* Slide Background */
.slide-background {
    position: absolute;
    inset: 0;
    overflow: hidden;
    background: #000;
}

/* Video Background */
.video-bg {
    position: absolute;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    transform: translate(-50%, -50%);
    object-fit: cover;
    z-index: 1;
}

/* Subtle overlay for text readability */
.video-overlay {
    position: absolute;
    inset: 0;
    background: rgba(0, 0, 0, 0.15);
    z-index: 2;
}

/* Darker overlay image */
.darker-overlay {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.80;
    z-index: 2;
}

/* Slide Content */
.slide-content {
    position: relative;
    z-index: 10;
    text-align: center;
    width: 100%;
    max-width: 1600px;
    padding: 2rem 3rem;
}

/* Fullscreen Image Slides */
.slide-fullscreen-image .slide-content {
    max-width: 100%;
    padding: 0;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.fullscreen-image {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
    object-fit: contain;
}

/* Solid black background */
.solid-black-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #000;
}

/* Slide Footer */
.slide-footer {
    position: absolute;
    top: 1.5rem;
    right: 2rem;
    z-index: 20;
}

.corner-logo {
    height: 40px;
    width: auto;
    opacity: 0.9;
}

/* =============================================
   SCROLL INDICATOR
   ============================================= */
.scroll-indicator {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    animation: fadeIn 1s ease-out 1.5s both;
}

.scroll-indicator span {
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    opacity: 0.6;
}

.mouse {
    width: 26px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-radius: 13px;
    position: relative;
}

.wheel {
    width: 4px;
    height: 8px;
    background: var(--white);
    border-radius: 2px;
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 2s ease-in-out infinite;
}

@keyframes scrollWheel {
    0%, 100% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    50% {
        opacity: 0.3;
        transform: translateX(-50%) translateY(10px);
    }
}

/* =============================================
   NAVIGATION DOTS
   ============================================= */
.slide-nav {
    position: fixed;
    right: 2rem;
    top: 50%;
    transform: translateY(-50%);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.6rem;
    z-index: 100;
    opacity: 0;
    transition: opacity 0.3s ease;
    padding: 2rem 4rem 2rem 4rem;
    margin: -2rem -4rem -2rem -4rem;
}

.slide-nav:hover {
    opacity: 1;
}

.nav-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.25);
    background: transparent;
    cursor: pointer;
    transition: all 0.3s ease;
    padding: 0;
    position: relative;
}

.nav-dot:hover {
    border-color: rgba(255, 255, 255, 0.6);
    transform: scale(1.2);
}

.nav-dot.active {
    background: rgba(255, 255, 255, 0.5);
    border-color: rgba(255, 255, 255, 0.5);
}

/* Nav dot tooltip */
.nav-dot::before {
    content: attr(data-label);
    position: absolute;
    right: calc(100% + 8px);
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.75);
    color: white;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: 12px;
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
}

.nav-dot:hover::before {
    opacity: 1;
}

/* =============================================
   ANIMATIONS
   ============================================= */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

/* =============================================
   WIPE TRANSITION
   ============================================= */
.slide.wiping {
    opacity: 1;
    visibility: visible;
    z-index: 10;
    clip-path: inset(0 100% 0 0);
    transition: clip-path 0.5s ease-in-out;
}

.slide.wiping.fading {
    animation: fadeOut 0.5s ease-in-out forwards;
}

.slide.wiping-in {
    z-index: 15;
    animation: wipeInFromLeft 0.5s ease-in-out forwards;
}

@keyframes wipeInFromLeft {
    0% { clip-path: inset(0 100% 0 0); }
    100% { clip-path: inset(0 0 0 0); }
}

/* =============================================
   CROSSFADE TRANSITION
   ============================================= */
.slide.crossfade-transition {
    transition: opacity 1s ease !important;
}

/* =============================================
   PAGE TURN EFFECT
   ============================================= */
.page-turn-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    pointer-events: none;
    perspective: 2500px;
}

.page-turn-page {
    position: absolute;
    transform-style: preserve-3d;
    transform-origin: left center;
    backface-visibility: hidden;
}

.page-turn-page .page-front {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
}

.page-turn-page .page-back {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    transform: rotateY(180deg);
    background: linear-gradient(to right, #d4d4d4 0%, #f5f5f5 10%, #e8e8e8 100%);
}

.page-turn-page .page-shadow {
    position: absolute;
    top: 0;
    right: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to left,
        rgba(0, 0, 0, 0.3) 0%,
        rgba(0, 0, 0, 0.1) 10%,
        transparent 30%);
    opacity: 0;
    pointer-events: none;
}

.page-turn-page.turning .page-shadow {
    animation: pageShadow 1.2s ease-in-out forwards;
}

@keyframes pageShadow {
    0% { opacity: 0; }
    30% { opacity: 1; }
    70% { opacity: 1; }
    100% { opacity: 0; }
}

.page-turn-page .page-fold {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right,
        rgba(0, 0, 0, 0.7) 0%,
        rgba(0, 0, 0, 0.5) 2%,
        rgba(0, 0, 0, 0.3) 5%,
        rgba(0, 0, 0, 0.15) 10%,
        rgba(0, 0, 0, 0.05) 20%,
        transparent 35%,
        transparent 100%);
    opacity: 0;
    pointer-events: none;
}

.page-turn-page .page-curl-highlight {
    position: absolute;
    top: 0;
    left: 0;
    width: 15px;
    height: 100%;
    background: linear-gradient(to right,
        rgba(255, 255, 255, 0.4) 0%,
        rgba(255, 255, 255, 0.2) 30%,
        transparent 100%);
    opacity: 0;
    pointer-events: none;
}

.page-turn-page.turning .page-fold,
.page-turn-page.turning .page-curl-highlight {
    animation: pageFold 1.2s ease-in-out forwards;
}

@keyframes pageFold {
    0% { opacity: 0; }
    10% { opacity: 1; }
    90% { opacity: 1; }
    100% { opacity: 0; }
}

.page-under-shadow {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right,
        rgba(0, 0, 0, 0.7) 0%,
        rgba(0, 0, 0, 0.5) 5%,
        rgba(0, 0, 0, 0.3) 15%,
        rgba(0, 0, 0, 0.1) 35%,
        transparent 60%);
    opacity: 0;
    pointer-events: none;
    z-index: 1;
}

.page-under-shadow.visible {
    animation: underShadow 1.2s ease-in-out forwards;
}

@keyframes underShadow {
    0% { opacity: 0; }
    20% { opacity: 1; }
    80% { opacity: 1; }
    100% { opacity: 0; }
}

/* =============================================
   1920x1080 OPTIMIZATIONS
   ============================================= */
@media screen and (min-width: 1920px) and (min-height: 1080px) {
    .slide-content {
        max-width: 1700px;
    }
}

/* =============================================
   EXAMPLE SLIDE STYLES
   ============================================= */

/* Gradient Backgrounds */
.gradient-bg {
    position: absolute;
    inset: 0;
}

.gradient-blue-purple {
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 30%, #0f3460 60%, #533483 100%);
}

.gradient-dark {
    background: linear-gradient(135deg, #0d0d0d 0%, #1a1a2e 50%, #0d0d1a 100%);
}

.gradient-cyan-blue {
    background: linear-gradient(135deg, #0f3460 0%, #00aeef 50%, #2b47da 100%);
}

.gradient-purple-magenta {
    background: linear-gradient(135deg, #5438d4 0%, #4d006e 50%, #c41ead 100%);
}

/* Hero Title / Subtitle */
.hero-title {
    font-size: 5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 1rem;
    line-height: 1.1;
    animation: fadeInUp 1s ease-out;
}

.hero-subtitle {
    font-size: 1.8rem;
    font-weight: 300;
    color: rgba(255, 255, 255, 0.8);
    animation: fadeInUp 1s ease-out 0.3s both;
}

/* Two Column Layout */
.two-column-layout {
    display: flex;
    justify-content: center;
    gap: 6rem;
    animation: fadeInUp 0.8s ease-out;
}

.column {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
}

.column-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--white);
}

.column-subtitle {
    font-size: 1.2rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.8);
}

/* Placeholder Image */
.placeholder-image {
    background: rgba(255, 255, 255, 0.1);
    border: 2px dashed rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.5);
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 0.05em;
}

.qr-placeholder {
    border-radius: 8px;
}

/* Content Heading & List */
.content-heading {
    font-size: 3.5rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 2.5rem;
    text-align: left;
    animation: fadeInUp 0.8s ease-out;
}

.content-list {
    list-style: none;
    text-align: left;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

.content-list li {
    font-size: 1.8rem;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.9);
    padding: 0.8rem 0;
    padding-left: 2rem;
    position: relative;
    line-height: 1.4;
}

.content-list li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--cyan);
}