:root {
    --bg-color: #030308;
    --card-bg: rgba(20, 20, 30, 0.4);
    --accent-color: #00e5ff;
    --accent-glow: rgba(0, 229, 255, 0.5);
    --text-primary: #ffffff;
    --text-secondary: #b0b0c0;
    --accent-gradient: linear-gradient(135deg, #00e5ff 0%, #1e88e5 100%);
    --glass-border: rgba(255, 255, 255, 0.1);
    --safe-bottom: 90px;
    --padding-x: 9vw;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
    width: 100vw;
}

/* ============================================================
   DECORATIONS
   ============================================================ */
.bg-decorations {
    position: fixed; inset: 0; z-index: -1;
    overflow: hidden; pointer-events: none;
}

.particle {
    position: absolute;
    background: var(--accent-color);
    border-radius: 50%; opacity: 0.3;
    animation: floatParticle linear infinite;
}

.glow-orb {
    position: absolute;
    width: 50vw; height: 50vw;
    max-width: 700px; max-height: 700px;
    background: radial-gradient(circle, var(--accent-glow) 0%, transparent 60%);
    border-radius: 50%; filter: blur(100px); opacity: 0.12;
    animation: pulseGlow 20s ease-in-out infinite alternate;
}

.cyber-grid {
    position: fixed; inset: 0;
    background-image:
        linear-gradient(rgba(0,229,255,.028) 1px, transparent 1px),
        linear-gradient(90deg, rgba(0,229,255,.028) 1px, transparent 1px);
    background-size: 60px 60px;
    z-index: -2; pointer-events: none;
}

/* HUD Side Lines */
.hud-left, .hud-right {
    position: fixed; top: 50%; transform: translateY(-50%);
    width: 28px; height: 65vh;
    display: flex; flex-direction: column;
    justify-content: space-between;
    z-index: 1; pointer-events: none;
}
.hud-left  { left: 1.8vw; border-left:  1px solid rgba(0,229,255,.25); padding-left: 7px; }
.hud-right { right: 1.8vw; border-right: 1px solid rgba(0,229,255,.25); padding-right: 7px; align-items: flex-end; }
.hud-marker { width: 13px; height: 1px; background: rgba(0,229,255,.4); }
.hud-dot   { width: 5px; height: 5px; background: var(--accent-color); box-shadow: 0 0 8px var(--accent-glow); border-radius: 50%; }
.hud-text  { color: rgba(0,229,255,.3); font-size: .55rem; writing-mode: vertical-rl; text-transform: uppercase; letter-spacing: 3px; transform: rotate(180deg); }

@keyframes floatParticle {
    0%   { transform: translateY(110vh); opacity: 0; }
    10%  { opacity: .5; }
    90%  { opacity: .5; }
    100% { transform: translateY(-10vh) translateX(80px); opacity: 0; }
}
@keyframes pulseGlow {
    from { transform: translate(-10%,-10%) scale(1); }
    to   { transform: translate(10%,10%) scale(1.2); }
}

/* ============================================================
   TOP SLIDE INDICATOR (Apple-style dots)
   ============================================================ */
.slide-indicator {
    position: fixed; top: 20px; left: 50%;
    transform: translateX(-50%);
    display: flex; gap: 8px; align-items: center;
    z-index: 200;
}
.indicator-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: rgba(255,255,255,.2);
    border: 1px solid rgba(255,255,255,.2);
    transition: all .4s ease;
    cursor: pointer;
}
.indicator-dot.active {
    background: var(--accent-color);
    box-shadow: 0 0 8px var(--accent-color);
    width: 20px;
    border-radius: 3px;
}

/* ============================================================
   SLIDES ENGINE
   ============================================================ */
.slides-container {
    width: 100%; height: 100vh;
    display: flex;
    transition: transform 1s cubic-bezier(.77,0,.175,1);
    will-change: transform;
}

.slide {
    min-width: 100%; height: 100%;
    display: flex; align-items: center;
    justify-content: space-between;
    padding: 40px var(--padding-x) var(--safe-bottom) var(--padding-x);
    position: relative;
}

/* ============================================================
   CONTENT
   ============================================================ */
.content {
    flex: 1; max-width: 46%;
    opacity: 0; transform: translateX(-40px);
    transition: all .8s .3s cubic-bezier(.25,.46,.45,.94);
    z-index: 5;
}
.slide.active .content { opacity: 1; transform: translateX(0); }

.centered-content {
    max-width: 100% !important; width: 100%;
    display: flex; flex-direction: column;
    align-items: center; text-align: center;
}
.centered-content .slide-number::before { display: none; }

.slide-number {
    font-size: clamp(.75rem,.9vw,.95rem);
    color: var(--accent-color);
    letter-spacing: 5px; margin-bottom: 1.8vh;
    font-weight: 600; text-transform: uppercase;
    display: flex; align-items: center;
}
.slide-number::before {
    content: ''; width: 28px; height: 2px;
    background: var(--accent-color); margin-right: 14px;
}

h1 {
    font-size: clamp(2.2rem,5.5vw,5rem);
    font-weight: 800; line-height: 1.05;
    margin-bottom: 1.8vh;
    text-transform: uppercase; letter-spacing: -1px;
}
.main-title { font-size: clamp(2.8rem,6.5vw,5.5rem); }

.highlight {
    background: var(--accent-gradient);
    background-clip: text; -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

p {
    font-size: clamp(.95rem,1.3vw,1.2rem);
    color: var(--text-secondary);
    line-height: 1.65; margin-bottom: 3vh; max-width: 92%;
}

/* ============================================================
   BADGE & BUTTON
   ============================================================ */
.badge {
    display: inline-flex; align-items: center;
    padding: .5rem 1.2rem;
    background: rgba(0,229,255,.08);
    border: 1px solid var(--accent-color); border-radius: 50px;
    font-size: clamp(.65rem,.8vw,.88rem); font-weight: 600;
    color: var(--accent-color); text-transform: uppercase;
    letter-spacing: 2px; margin-bottom: 2vh;
}

.return-btn {
    display: inline-flex; align-items: center;
    gap: 12px; padding: 1.1rem 2.8rem;
    background: var(--accent-gradient);
    color: white; border: none; border-radius: 100px;
    cursor: pointer;
    font-size: clamp(.9rem,1vw,1.1rem);
    font-weight: 700; text-transform: uppercase; letter-spacing: 2px;
    transition: all .4s cubic-bezier(.175,.885,.32,1.275);
    box-shadow: 0 10px 25px rgba(0,229,255,.3),
                inset 0 1px 4px rgba(255,255,255,.3);
    position: relative; overflow: hidden;
}
.return-btn::before {
    content: ''; position: absolute;
    top: 0; left: -100%; width: 100%; height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,.4), transparent);
    transition: left .5s ease;
}
.return-btn:hover { transform: translateY(-5px) scale(1.02); box-shadow: 0 16px 35px rgba(0,229,255,.5); }
.return-btn:hover::before { left: 100%; }
.return-btn:active { transform: scale(.98); }

/* ============================================================
   SPECS GRID
   ============================================================ */
.specs-grid {
    display: grid; grid-template-columns: repeat(2,1fr); gap: 1.2vw;
}
.spec-item {
    background: var(--card-bg); padding: 2vh 1.8vw;
    border-radius: 14px; border: 1px solid var(--glass-border);
    backdrop-filter: blur(20px);
    transition: transform .3s ease, border-color .3s ease;
}
.spec-item:hover { transform: translateY(-4px); border-color: rgba(255,255,255,.2); }
.spec-item h3 { font-size: clamp(.65rem,.8vw,.8rem); color: var(--accent-color); text-transform: uppercase; margin-bottom: .8vh; letter-spacing: 1.5px; }
.spec-item p   { font-size: clamp(1.3rem,2.2vw,2.2rem); font-weight: 700; margin-bottom: 0; color: #fff; line-height: 1; }

/* ============================================================
   SUMMARY
   ============================================================ */
.summary-list {
    display: grid; grid-template-columns: repeat(3,1fr);
    gap: 1.2vw; width: 100%; margin-top: 2.5vh;
}
.summary-item {
    background: var(--card-bg); padding: 1.8vh 1.2vw;
    border-radius: 14px; border: 1px solid var(--glass-border);
    cursor: pointer;
    transition: all .35s cubic-bezier(.25,.8,.25,1);
    display: flex; flex-direction: column;
    align-items: flex-start; gap: 7px;
    backdrop-filter: blur(20px);
}
.summary-item:hover {
    background: rgba(0,229,255,.1);
    border-color: var(--accent-color);
    transform: translateY(-6px) scale(1.02);
    box-shadow: 0 12px 30px rgba(0,0,0,.45), 0 0 14px rgba(0,229,255,.15);
}
.summary-item span { color: var(--accent-color); font-weight: 800; font-size: .75rem; text-transform: uppercase; letter-spacing: 2px; }
.summary-item h4  { font-size: clamp(.95rem,1.1vw,1.2rem); font-weight: 600; color: #fff; line-height: 1.2; }

/* ============================================================
   TIMELINE SLIDE
   ============================================================ */
.timeline-slide-content {
    max-width: 100% !important; width: 100%;
    display: flex; flex-direction: column; align-items: center;
}
.timeline-slide-content .slide-number::before { display: none; }

.timeline {
    position: relative;
    width: 100%; max-width: 1100px;
    margin-top: 4vh;
    display: flex; align-items: flex-start;
    justify-content: space-between;
    gap: 0;
}
.timeline::before {
    content: '';
    position: absolute;
    top: 18px; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-color), transparent);
}

.timeline-event {
    display: flex; flex-direction: column;
    align-items: center; gap: 12px;
    flex: 1;
    opacity: 0; transform: translateY(20px);
    transition: all .6s ease;
    cursor: default;
}
.slide.active .timeline-event { opacity: 1; transform: translateY(0); }
.slide.active .timeline-event:nth-child(1) { transition-delay: .1s; }
.slide.active .timeline-event:nth-child(2) { transition-delay: .25s; }
.slide.active .timeline-event:nth-child(3) { transition-delay: .4s; }
.slide.active .timeline-event:nth-child(4) { transition-delay: .55s; }
.slide.active .timeline-event:nth-child(5) { transition-delay: .7s; }

.timeline-dot {
    width: 36px; height: 36px;
    border-radius: 50%;
    background: var(--card-bg);
    border: 2px solid var(--accent-color);
    box-shadow: 0 0 15px rgba(0,229,255,.4);
    display: flex; align-items: center; justify-content: center;
    font-size: .75rem; font-weight: 800; color: var(--accent-color);
    position: relative; z-index: 2;
    transition: transform .3s ease;
}
.timeline-event:hover .timeline-dot { transform: scale(1.2); background: rgba(0,229,255,.2); }

.timeline-year {
    font-size: clamp(.9rem,1.3vw,1.4rem);
    font-weight: 800; color: var(--accent-color);
}

.timeline-card {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: 14px; padding: 1.2rem 1rem;
    text-align: center; max-width: 160px;
    backdrop-filter: blur(20px);
    transition: border-color .3s ease, box-shadow .3s ease;
}
.timeline-event:hover .timeline-card {
    border-color: var(--accent-color);
    box-shadow: 0 8px 20px rgba(0,229,255,.1);
}
.timeline-card h4 { font-size: clamp(.75rem,.9vw,.95rem); font-weight: 700; color: #fff; margin-bottom: 4px; }
.timeline-card p  { font-size: clamp(.65rem,.75vw,.8rem); color: var(--text-secondary); line-height: 1.4; margin: 0; }

/* ============================================================
   COUNTER / DASHBOARD SLIDE
   ============================================================ */
.counters-grid {
    display: grid;
    grid-template-columns: repeat(4,1fr);
    gap: 1.5vw;
    width: 100%; max-width: 1100px;
    margin-top: 3vh;
}
.counter-card {
    background: var(--card-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px; padding: 3vh 1.5vw;
    display: flex; flex-direction: column;
    align-items: center; gap: 10px;
    backdrop-filter: blur(20px);
    transition: transform .3s ease, border-color .3s ease;
    text-align: center;
    opacity: 0; transform: translateY(30px);
    transition: opacity .6s ease, transform .6s ease, border-color .3s ease;
}
.slide.active .counter-card { opacity: 1; transform: translateY(0); }
.slide.active .counter-card:nth-child(1) { transition-delay: .1s; }
.slide.active .counter-card:nth-child(2) { transition-delay: .2s; }
.slide.active .counter-card:nth-child(3) { transition-delay: .3s; }
.slide.active .counter-card:nth-child(4) { transition-delay: .4s; }
.slide.active .counter-card:nth-child(5) { transition-delay: .5s; }
.slide.active .counter-card:nth-child(6) { transition-delay: .6s; }
.slide.active .counter-card:nth-child(7) { transition-delay: .7s; }
.slide.active .counter-card:nth-child(8) { transition-delay: .8s; }

.counter-card:hover { border-color: var(--accent-color); transform: translateY(-8px) !important; box-shadow: 0 15px 30px rgba(0,229,255,.1); }

.counter-icon { font-size: 2rem; }

.counter-value {
    font-size: clamp(2rem,3.5vw,3.5rem);
    font-weight: 800;
    background: var(--accent-gradient);
    background-clip: text; -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    line-height: 1;
}

.counter-label {
    font-size: clamp(.7rem,.85vw,.9rem);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 1.5px;
    font-weight: 600;
}

/* ============================================================
   VISUAL FRAME
   ============================================================ */
.visual {
    flex: 1; height: 100%;
    display: flex; align-items: center; justify-content: flex-end;
    position: relative;
    opacity: 0; transform: scale(.95);
    transition: all 1s .4s cubic-bezier(.25,1,.5,1);
}
.slide.active .visual { opacity: 1; transform: scale(1); }

.visual-container {
    position: relative; width: 90%; height: 68vh;
    border-radius: 20px; overflow: hidden;
    box-shadow: 0 25px 60px rgba(0,0,0,.6), 0 0 30px rgba(0,229,255,.05);
    border: 1px solid rgba(0,229,255,.12);
    background-color: #0f0f15;
}
.visual-container::before {
    content: ''; position: absolute; top: 10px; left: 10px;
    width: 20px; height: 20px;
    border-top: 2px solid var(--accent-color); border-left: 2px solid var(--accent-color);
    z-index: 3; opacity: .7;
}
.visual-container::after {
    content: ''; position: absolute; bottom: 10px; right: 10px;
    width: 20px; height: 20px;
    border-bottom: 2px solid var(--accent-color); border-right: 2px solid var(--accent-color);
    z-index: 3; opacity: .7;
}
.visual-container img {
    width: 100%; height: 100%;
    object-fit: cover; object-position: center;
    transition: transform 12s linear;
}
.slide.active .visual-container img { transform: scale(1.05); }

.image-overlay {
    position: absolute; inset: 0;
    background: linear-gradient(to top, rgba(0,0,0,.8) 0%, transparent 55%);
    pointer-events: none;
}

/* ============================================================
   CONTROLS
   ============================================================ */
.controls {
    position: fixed; bottom: 22px; left: 50%;
    transform: translateX(-50%);
    display: flex; align-items: center; gap: 2rem;
    z-index: 100;
    background: rgba(8,8,12,.85); padding: .9rem 2.5rem;
    border-radius: 100px; backdrop-filter: blur(20px);
    border: 1px solid var(--glass-border);
    box-shadow: 0 10px 30px rgba(0,0,0,.5); height: 56px;
}
.control-btn {
    background: none; border: none; color: #fff;
    font-size: 1.4rem; cursor: pointer; opacity: .6;
    transition: all .2s ease;
    display: flex; align-items: center; justify-content: center;
    width: 36px; height: 36px; border-radius: 50%;
}
.control-btn:hover { color: var(--accent-color); opacity: 1; background: rgba(255,255,255,.05); }
.progress-bar { width: 180px; height: 4px; background: rgba(255,255,255,.1); border-radius: 4px; overflow: hidden; }
.progress-fill { height: 100%; background: var(--accent-gradient); width: 0%; transition: width .5s cubic-bezier(.19,1,.22,1); box-shadow: 0 0 10px var(--accent-color); }

/* Fullscreen hint */
.fullscreen-hint {
    position: fixed; bottom: 22px; right: 2vw;
    color: rgba(255,255,255,.2); font-size: .65rem;
    text-transform: uppercase; letter-spacing: 1.5px;
    z-index: 100; pointer-events: none;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1100px) {
    .summary-list    { grid-template-columns: repeat(2,1fr); }
    .counters-grid   { grid-template-columns: repeat(2,1fr); }
    .timeline        { flex-direction: column; align-items: flex-start; gap: 1.5rem; }
    .timeline::before { display: none; }
    .timeline-event  { flex-direction: row; }
}
@media (max-width: 900px) {
    .slide { flex-direction: column; justify-content: flex-start; padding-top: 10vh; padding-bottom: 110px; }
    .content, .visual { max-width: 100%; width: 100%; }
    .content { text-align: center; display: flex; flex-direction: column; align-items: center; margin-bottom: 3vh; }
    .slide-number { justify-content: center; }
    .slide-number::before { display: none; }
    .visual { justify-content: center; }
    .visual-container { width: 100%; height: 38vh; }
    .specs-grid  { grid-template-columns: 1fr 1fr; gap: 10px; }
    .counters-grid { grid-template-columns: 1fr 1fr; }
}