/* ============================================
   DIGITAL GARBAGE PRESENTATION
   A high-impact presentation on the eco-crisis of the internet
   ============================================ */

/* CSS Variables - Acid Neon Palette */
:root {
    --neon-green: #CCFF00;
    --neon-pink: #FF3CAC;
    --dark-bg: #0D0D0D;
    --darker-bg: #1A1A2E;
    --text-light: #FFFFFF;
    --text-dim: #888888;
    --accent-orange: #FF6B2B;
    --accent-blue: #00D4FF;
    --accent-purple: #7B68EE;
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html, body {
    width: 100%;
    height: 100%;
    overflow: hidden;
    font-family: 'Chillax', sans-serif;
    background: var(--dark-bg);
    color: var(--text-light);
}

/* Presentation Container */
.presentation-container {
    width: 100vw;
    height: 100vh;
    position: relative;
    overflow: hidden;
}

/* Slide Base */
.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 0.6s ease, visibility 0.6s ease;
    padding: 60px;
}

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

.slide-content {
    width: 100%;
    max-width: 1400px;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
}

/* ============================================
   SLIDE 1: TITLE SLIDE
   ============================================ */
.title-slide {
    background: radial-gradient(ellipse at center, #1a1a2e 0%, #0d0d0d 70%);
}

.neon-container {
    position: relative;
    text-align: center;
}

.neon-title {
    font-family: 'Clash Display', sans-serif;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.neon-line {
    display: block;
    font-size: clamp(3rem, 8vw, 7rem);
    color: var(--neon-green);
    text-shadow: 
        0 0 10px rgba(204, 255, 0, 0.5),
        0 0 20px rgba(204, 255, 0, 0.3),
        0 0 40px rgba(204, 255, 0, 0.2),
        0 0 80px rgba(204, 255, 0, 0.1);
    animation: neonPulse 2s ease-in-out infinite alternate;
    line-height: 1.1;
}

.neon-subtitle {
    display: block;
    font-size: clamp(1rem, 2.5vw, 1.8rem);
    font-weight: 400;
    color: var(--text-light);
    margin-top: 1.5rem;
    letter-spacing: 0.15em;
    opacity: 0.9;
}

@keyframes neonPulse {
    from {
        text-shadow: 
            0 0 10px rgba(204, 255, 0, 0.5),
            0 0 20px rgba(204, 255, 0, 0.3),
            0 0 40px rgba(204, 255, 0, 0.2);
    }
    to {
        text-shadow: 
            0 0 20px rgba(204, 255, 0, 0.8),
            0 0 40px rgba(204, 255, 0, 0.5),
            0 0 60px rgba(204, 255, 0, 0.3),
            0 0 100px rgba(204, 255, 0, 0.2);
    }
}

.neon-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 600px;
    height: 300px;
    background: radial-gradient(ellipse, rgba(204, 255, 0, 0.1) 0%, transparent 70%);
    filter: blur(60px);
    pointer-events: none;
    z-index: -1;
}

.presenter-note {
    position: absolute;
    bottom: 100px;
    font-size: 0.9rem;
    color: var(--text-dim);
    letter-spacing: 0.2em;
    text-transform: uppercase;
    animation: fadeInOut 2s ease-in-out infinite;
}

@keyframes fadeInOut {
    0%, 100% { opacity: 0.5; }
    50% { opacity: 1; }
}

/* ============================================
   SLIDE TITLES
   ============================================ */
.slide-title {
    font-family: 'Clash Display', sans-serif;
    font-size: clamp(1.8rem, 4vw, 3rem);
    font-weight: 600;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ============================================
   SLIDE 2: SPLIT SCREEN - CLOUD vs DATACENTER
   ============================================ */
.split-slide {
    background: linear-gradient(180deg, #0d0d0d 0%, #1a1a2e 100%);
}

.split-container {
    display: flex;
    width: 100%;
    height: 60vh;
    position: relative;
}

.split-left, .split-right {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
}

.split-divider {
    width: 2px;
    background: linear-gradient(180deg, transparent, var(--neon-green), transparent);
    margin: 0 2rem;
}

.split-label {
    margin-top: 2rem;
    font-size: 1.2rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* Cloud Scene */
.cloud-scene {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.sky-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, #4A90E2 0%, #87CEEB 100%);
    border-radius: 20px;
    z-index: -1;
}

.cloud {
    position: relative;
    width: 200px;
    height: 100px;
}

.cloud-puff {
    position: absolute;
    background: white;
    border-radius: 50%;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
}

.cloud-puff:nth-child(1) {
    width: 100px;
    height: 100px;
    top: 0;
    left: 0;
}

.cloud-puff:nth-child(2) {
    width: 120px;
    height: 120px;
    top: -30px;
    left: 60px;
}

.cloud-puff:nth-child(3) {
    width: 90px;
    height: 90px;
    top: 10px;
    left: 130px;
}

/* Datacenter Scene */
.datacenter-scene {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    background: linear-gradient(180deg, #2a2a2a 0%, #1a1a1a 100%);
    border-radius: 20px;
    overflow: hidden;
}

.server-rack {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 10px;
    background: #333;
    border-radius: 5px;
}

.server-row {
    width: 60px;
    height: 25px;
    background: linear-gradient(90deg, #444 0%, #555 50%, #444 100%);
    border-radius: 3px;
    position: relative;
    animation: serverGlow 2s ease-in-out infinite;
}

.server-row::after {
    content: '';
    position: absolute;
    right: 8px;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    background: var(--neon-green);
    border-radius: 50%;
    animation: ledBlink 1s ease-in-out infinite;
}

@keyframes serverGlow {
    0%, 100% { box-shadow: 0 0 5px rgba(204, 255, 0, 0.2); }
    50% { box-shadow: 0 0 15px rgba(204, 255, 0, 0.5); }
}

@keyframes ledBlink {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

.haze {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 40%;
    background: linear-gradient(180deg, transparent, rgba(204, 255, 0, 0.05));
    pointer-events: none;
}

/* ============================================
   SLIDE 3: CARBON FOOTPRINT METRICS
   ============================================ */
.data-slide {
    background: var(--dark-bg);
}

.metrics-container {
    display: flex;
    gap: 3rem;
    justify-content: center;
    align-items: stretch;
    flex-wrap: wrap;
}

.metric-card {
    background: linear-gradient(145deg, #1a1a2e 0%, #0d0d0d 100%);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 20px;
    padding: 3rem;
    text-align: center;
    min-width: 250px;
    position: relative;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.metric-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
}

.metric-card.highlight {
    border-color: var(--neon-pink);
    box-shadow: 0 0 30px rgba(255, 60, 172, 0.2);
}

.metric-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.metric-value {
    font-family: 'Clash Display', sans-serif;
    font-size: 4rem;
    font-weight: 700;
    color: var(--neon-green);
    line-height: 1;
}

.metric-label {
    font-size: 1.5rem;
    color: var(--text-dim);
    margin-top: 0.5rem;
}

.metric-desc {
    font-size: 1rem;
    color: var(--text-light);
    margin-top: 1rem;
    opacity: 0.8;
}

.co2-formula {
    position: absolute;
    bottom: 10px;
    right: 15px;
    font-size: 0.8rem;
    color: var(--text-dim);
    opacity: 0.5;
}

/* ============================================
   SLIDE 4: ICEBERG - DARK DATA
   ============================================ */
.iceberg-slide {
    background: linear-gradient(180deg, #87CEEB 0%, #1a3a5c 30%, #0d1b2a 100%);
}

.iceberg-container {
    position: relative;
    width: 500px;
    height: 500px;
}

.water-surface {
    position: absolute;
    top: 35%;
    left: 0;
    width: 100%;
    height: 2px;
    background: rgba(255,255,255,0.5);
    z-index: 10;
}

.iceberg-tip {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 150px;
    height: 175px;
    background: linear-gradient(145deg, #e8f4f8 0%, #b8d4e3 100%);
    clip-path: polygon(50% 0%, 0% 100%, 100% 100%);
    display: flex;
    align-items: flex-end;
    justify-content: center;
    padding-bottom: 30px;
}

.tip-content {
    text-align: center;
}

.iceberg-mass {
    position: absolute;
    top: 35%;
    left: 50%;
    transform: translateX(-50%);
    width: 400px;
    height: 325px;
    background: linear-gradient(180deg, #FF6B2B 0%, #FF4500 50%, #8B2500 100%);
    clip-path: polygon(20% 0%, 80% 0%, 100% 100%, 0% 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 60px rgba(255, 107, 43, 0.5);
}

.mass-content {
    text-align: center;
    color: white;
}

.percentage {
    display: block;
    font-family: 'Clash Display', sans-serif;
    font-size: 4rem;
    font-weight: 700;
}

.label {
    display: block;
    font-size: 1.2rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.glow-effect {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 300px;
    height: 200px;
    background: radial-gradient(ellipse, rgba(255, 107, 43, 0.4) 0%, transparent 70%);
    filter: blur(40px);
    pointer-events: none;
}

/* ============================================
   SLIDE 5: RESOURCE CRISIS
   ============================================ */
.crisis-slide {
    background: var(--dark-bg);
}

.crisis-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 4rem;
    flex-wrap: wrap;
}

.crisis-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.water-drop {
    width: 120px;
    height: 150px;
    position: relative;
}

.drop-inner {
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, #00D4FF 0%, #0066CC 100%);
    border-radius: 50% 50% 50% 50% / 60% 60% 40% 40%;
    box-shadow: 
        inset -10px -10px 20px rgba(0,0,0,0.2),
        0 10px 30px rgba(0, 212, 255, 0.3);
}

.ripple {
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 20px;
    border: 2px solid rgba(0, 212, 255, 0.5);
    border-radius: 50%;
    animation: ripple 2s ease-out infinite;
}

@keyframes ripple {
    0% { transform: translateX(-50%) scale(1); opacity: 1; }
    100% { transform: translateX(-50%) scale(2); opacity: 0; }
}

.pipe {
    width: 40px;
    height: 100px;
    background: linear-gradient(90deg, #666 0%, #888 50%, #666 100%);
    border-radius: 5px;
    position: relative;
}

.pipe::after {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 20px;
    height: 100%;
    background: linear-gradient(180deg, rgba(0, 212, 255, 0.8) 0%, transparent 100%);
    animation: waterFlow 1s linear infinite;
}

@keyframes waterFlow {
    0% { transform: translateX(-50%) translateY(-100%); }
    100% { transform: translateX(-50%) translateY(100%); }
}

.crisis-metric {
    text-align: center;
    padding: 2rem;
    background: rgba(255,255,255,0.05);
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.1);
}

.metric-number {
    font-family: 'Clash Display', sans-serif;
    font-size: 4rem;
    font-weight: 700;
    color: var(--neon-green);
}

.metric-unit {
    font-size: 1.2rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-top: 0.5rem;
}

.circuit-pile {
    position: relative;
    width: 150px;
    height: 120px;
}

.circuit {
    position: absolute;
    width: 100px;
    height: 60px;
    background: linear-gradient(145deg, #4a6741 0%, #2d4a22 100%);
    border-radius: 5px;
    border: 2px solid #666;
}

.circuit:nth-child(1) { top: 0; left: 10px; transform: rotate(-5deg); }
.circuit:nth-child(2) { top: 20px; left: 30px; transform: rotate(3deg); }
.circuit:nth-child(3) { top: 40px; left: 5px; transform: rotate(-2deg); }
.circuit:nth-child(4) { top: 50px; left: 40px; transform: rotate(5deg); }
.circuit:nth-child(5) { top: 60px; left: 15px; transform: rotate(-3deg); }

.circuit::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60%;
    height: 60%;
    background: 
        linear-gradient(90deg, transparent 48%, #gold 48%, #gold 52%, transparent 52%),
        linear-gradient(0deg, transparent 48%, #gold 48%, #gold 52%, transparent 52%);
    opacity: 0.5;
}

.crisis-label {
    font-size: 1.2rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

/* ============================================
   SLIDE 6: DNA HELIX
   ============================================ */
.dna-slide {
    background: linear-gradient(180deg, #0d0d0d 0%, #1a0a2e 50%, #0d0d0d 100%);
}

.dna-container {
    position: relative;
    width: 100%;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dna-helix {
    position: relative;
    width: 200px;
    height: 300px;
    transform-style: preserve-3d;
    animation: rotateHelix 10s linear infinite;
}

@keyframes rotateHelix {
    from { transform: rotateY(0deg); }
    to { transform: rotateY(360deg); }
}

.strand {
    position: absolute;
    width: 8px;
    height: 100%;
    background: linear-gradient(180deg, var(--neon-pink) 0%, var(--accent-purple) 100%);
    border-radius: 4px;
    left: 50%;
    transform-origin: center;
}

.strand-left {
    transform: translateX(-30px) rotateY(0deg);
    animation: strandWave 3s ease-in-out infinite;
}

.strand-right {
    transform: translateX(22px) rotateY(0deg);
    animation: strandWave 3s ease-in-out infinite reverse;
}

@keyframes strandWave {
    0%, 100% { transform: translateX(-30px) rotateY(0deg) translateZ(20px); }
    50% { transform: translateX(-30px) rotateY(180deg) translateZ(-20px); }
}

.base-pairs {
    position: absolute;
    width: 100%;
    height: 100%;
    left: 50%;
    transform: translateX(-50%);
}

.base-pair {
    position: absolute;
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-blue) 0%, var(--neon-green) 100%);
    left: 50%;
    transform: translateX(-50%);
    border-radius: 2px;
    box-shadow: 0 0 10px rgba(0, 212, 255, 0.5);
}

.base-pair:nth-child(1) { top: 10%; }
.base-pair:nth-child(2) { top: 25%; }
.base-pair:nth-child(3) { top: 40%; }
.base-pair:nth-child(4) { top: 55%; }
.base-pair:nth-child(5) { top: 70%; }
.base-pair:nth-child(6) { top: 85%; }
.base-pair:nth-child(7) { top: 100%; }
.base-pair:nth-child(8) { top: 115%; }

.binary-transition {
    position: absolute;
    right: 10%;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.binary-digit {
    font-family: 'Clash Display', monospace;
    font-size: 2rem;
    color: var(--neon-green);
    opacity: 0;
    animation: binaryFade 2s ease-in-out infinite;
}

.binary-digit:nth-child(1) { animation-delay: 0s; }
.binary-digit:nth-child(2) { animation-delay: 0.3s; }
.binary-digit:nth-child(3) { animation-delay: 0.6s; }
.binary-digit:nth-child(4) { animation-delay: 0.9s; }
.binary-digit:nth-child(5) { animation-delay: 1.2s; }
.binary-digit:nth-child(6) { animation-delay: 1.5s; }

@keyframes binaryFade {
    0%, 100% { opacity: 0.2; transform: translateX(0); }
    50% { opacity: 1; transform: translateX(10px); }
}

/* ============================================
   SLIDE 7: WORKFLOW DIAGRAM
   ============================================ */
.workflow-slide {
    background: var(--dark-bg);
}

.workflow-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4rem;
}

.workflow-step {
    display: flex;
    align-items: center;
    gap: 2rem;
    background: rgba(255,255,255,0.05);
    padding: 2rem 4rem;
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.1);
}

.binary-grid, .dna-bases {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.binary-grid span {
    font-family: 'Clash Display', monospace;
    font-size: 1.5rem;
    color: var(--neon-green);
    padding: 0.5rem 1rem;
    background: rgba(204, 255, 0, 0.1);
    border-radius: 8px;
}

.dna-bases {
    gap: 1rem;
}

.base {
    font-family: 'Clash Display', sans-serif;
    font-size: 1.5rem;
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    text-align: center;
}

.base-a { background: rgba(255, 60, 172, 0.2); color: var(--neon-pink); }
.base-t { background: rgba(0, 212, 255, 0.2); color: var(--accent-blue); }
.base-g { background: rgba(204, 255, 0, 0.2); color: var(--neon-green); }
.base-c { background: rgba(255, 107, 43, 0.2); color: var(--accent-orange); }

.arrow {
    font-size: 2rem;
    color: var(--text-dim);
}

.workflow-flow {
    display: flex;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
    justify-content: center;
}

.flow-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.flow-icon {
    font-size: 3rem;
}

.flow-label {
    font-size: 0.9rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.flow-arrow {
    font-size: 2rem;
    color: var(--neon-green);
}

/* ============================================
   SLIDE 8: RECOVERY WORKFLOW
   ============================================ */
.recovery-slide {
    background: linear-gradient(180deg, #0d0d0d 0%, #1a1a2e 100%);
}

.recovery-container {
    width: 100%;
    overflow-x: auto;
    padding: 2rem;
}

.recovery-flow {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    min-width: max-content;
    justify-content: center;
}

.recovery-step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    padding: 1.5rem;
    background: rgba(255,255,255,0.05);
    border-radius: 15px;
    border: 1px solid rgba(255,255,255,0.1);
    min-width: 140px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.recovery-step:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.recovery-step.final {
    border-color: var(--neon-green);
    box-shadow: 0 0 20px rgba(204, 255, 0, 0.2);
}

.step-icon {
    font-size: 2rem;
    padding: 1rem;
    border-radius: 10px;
    background: rgba(255,255,255,0.1);
}

.dna-icon { color: var(--neon-pink); }
.machine-icon { color: var(--accent-blue); }
.bases-icon { 
    font-family: 'Clash Display', monospace;
    font-size: 1.2rem;
    color: var(--accent-orange);
}
.binary-icon { 
    font-family: 'Clash Display', monospace;
    font-size: 0.9rem;
    color: var(--neon-green);
}
.file-icon { color: var(--text-light); }

.step-label {
    font-size: 0.85rem;
    color: var(--text-dim);
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.recovery-arrow {
    font-size: 1.5rem;
    color: var(--neon-green);
}

/* ============================================
   SLIDE 9: REALITY CHECK
   ============================================ */
.reality-slide {
    background: radial-gradient(ellipse at center, #2a1a3e 0%, #0d0d0d 70%);
}

.reality-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4rem;
}

.teacup-scene {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

.teacup {
    position: relative;
    width: 150px;
    height: 120px;
}

.cup-body {
    position: absolute;
    bottom: 0;
    width: 120px;
    height: 100px;
    background: linear-gradient(145deg, #f5f5f5 0%, #e0e0e0 100%);
    border-radius: 0 0 60px 60px;
    box-shadow: 
        inset -10px 0 20px rgba(0,0,0,0.1),
        0 10px 30px rgba(0,0,0,0.2);
}

.cup-handle {
    position: absolute;
    right: -25px;
    top: 20px;
    width: 40px;
    height: 50px;
    border: 8px solid #e0e0e0;
    border-radius: 0 25px 25px 0;
    border-left: none;
}

.liquid {
    position: absolute;
    bottom: 5px;
    left: 10px;
    width: 100px;
    height: 80px;
    background: linear-gradient(180deg, #00D4FF 0%, #0066CC 100%);
    border-radius: 0 0 50px 50px;
    overflow: hidden;
}

.liquid-surface {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 10px;
    background: rgba(255,255,255,0.3);
    animation: liquidShimmer 2s ease-in-out infinite;
}

@keyframes liquidShimmer {
    0%, 100% { transform: translateX(-100%); }
    50% { transform: translateX(100%); }
}

.teacup-label {
    font-size: 1.2rem;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.experiment-fact {
    text-align: center;
    padding: 2rem 4rem;
    background: rgba(255,255,255,0.05);
    border-radius: 20px;
    border: 1px solid rgba(255,255,255,0.1);
}

.fact-badge {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: var(--neon-pink);
    color: white;
    font-size: 0.9rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    border-radius: 20px;
    margin-bottom: 1rem;
}

.fact-text {
    font-family: 'Clash Display', sans-serif;
    font-size: 1.8rem;
    color: var(--text-light);
}

/* ============================================
   SLIDE 10: CALL TO ACTION
   ============================================ */
.action-slide {
    background: var(--dark-bg);
}

.checklist-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
    margin-bottom: 4rem;
}

.checklist-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem 2rem;
    background: rgba(255,255,255,0.05);
    border-radius: 15px;
    border: 1px solid rgba(255,255,255,0.1);
    transition: all 0.3s ease;
    cursor: pointer;
}

.checklist-item:hover {
    background: rgba(204, 255, 0, 0.05);
    border-color: var(--neon-green);
    transform: translateX(10px);
}

.checkbox {
    width: 30px;
    height: 30px;
    border: 2px solid var(--text-dim);
    border-radius: 8px;
    position: relative;
    transition: all 0.3s ease;
}

.checklist-item:hover .checkbox {
    border-color: var(--neon-green);
}

.checklist-item.checked .checkbox {
    background: var(--neon-green);
    border-color: var(--neon-green);
}

.checklist-item.checked .checkbox::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--dark-bg);
    font-size: 1.2rem;
    font-weight: bold;
}

.checklist-text {
    font-size: 1.3rem;
    color: var(--text-light);
}

.closing-message {
    text-align: center;
    margin-top: 2rem;
}

.closing-line {
    display: block;
    font-family: 'Clash Display', sans-serif;
    font-size: 2rem;
    color: var(--neon-green);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin: 0.5rem 0;
}

/* ============================================
   NAVIGATION CONTROLS
   ============================================ */
.nav-controls {
    position: fixed;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 2rem;
    z-index: 1000;
    background: rgba(0,0,0,0.8);
    padding: 1rem 2rem;
    border-radius: 50px;
    backdrop-filter: blur(10px);
}

.nav-btn {
    width: 50px;
    height: 50px;
    border: 2px solid var(--neon-green);
    background: transparent;
    color: var(--neon-green);
    font-size: 1.5rem;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.nav-btn:hover {
    background: var(--neon-green);
    color: var(--dark-bg);
    box-shadow: 0 0 20px rgba(204, 255, 0, 0.5);
}

.nav-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

.slide-counter {
    font-family: 'Clash Display', sans-serif;
    font-size: 1rem;
    color: var(--text-light);
    letter-spacing: 0.1em;
}

/* Progress Bar */
.progress-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: rgba(255,255,255,0.1);
    z-index: 1001;
}

.progress-fill {
    height: 100%;
    background: var(--neon-green);
    width: 10%;
    transition: width 0.3s ease;
    box-shadow: 0 0 10px rgba(204, 255, 0, 0.5);
}

/* ============================================
   ANIMATIONS & TRANSITIONS
   ============================================ */
.slide-enter {
    animation: slideEnter 0.6s ease forwards;
}

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

/* Staggered animations for cards */
.metric-card {
    opacity: 0;
    transform: translateY(30px);
}

.slide.active .metric-card {
    animation: cardEnter 0.5s ease forwards;
}

.slide.active .metric-card:nth-child(1) { animation-delay: 0.1s; }
.slide.active .metric-card:nth-child(2) { animation-delay: 0.3s; }
.slide.active .metric-card:nth-child(3) { animation-delay: 0.5s; }

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

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
    .slide {
        padding: 30px;
    }
    
    .split-container {
        flex-direction: column;
        height: auto;
    }
    
    .split-divider {
        width: 100%;
        height: 2px;
        margin: 1rem 0;
    }
    
    .metrics-container {
        flex-direction: column;
        align-items: center;
    }
    
    .iceberg-container {
        transform: scale(0.7);
    }
    
    .crisis-container {
        flex-direction: column;
        gap: 2rem;
    }
    
    .recovery-flow {
        flex-direction: column;
    }
    
    .recovery-arrow {
        transform: rotate(90deg);
    }
    
    .nav-controls {
        padding: 0.5rem 1rem;
    }
    
    .nav-btn {
        width: 40px;
        height: 40px;
        font-size: 1.2rem;
    }
}

/* ============================================
   ACCESSIBILITY
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles */
.nav-btn:focus,
.checklist-item:focus {
    outline: 2px solid var(--neon-green);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --neon-green: #00FF00;
        --text-dim: #AAAAAA;
    }
}