:root {
    /* Color Palette - Earthy, Sustainable, Clean */
    --leaf-green: #2d6a4f;
    --light-green: #95d5b2;
    --earth-brown: #6d4c41;
    --sky-blue: #e3f2fd;
    --wet-waste-blue: #1976d2;
    --dry-waste-yellow: #fbc02d;
    --plastic-red: #d32f2f;
    --off-white: #f8f9fa;
    --text-dark: #1b4332;
    --text-light: #52b788;
    --border-color: #d8e2dc;
    
    /* Spacing & Borders */
    --radius-lg: 24px;
    --radius-md: 12px;
    --shadow: 0 10px 30px rgba(0,0,0,0.05);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --slide-width: 100vw;
    --accent-orange: #ff9800;
}

/* Common Components */
.icon-box {
    width: 64px;
    height: 64px;
    background: var(--light-green);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--leaf-green);
    margin-bottom: 20px;
}

.check-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
    font-size: 1.1rem;
}

.check-icon {
    color: var(--leaf-green);
    flex-shrink: 0;
    margin-top: 4px;
}

.process-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--light-green);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.data-badge {
    background: var(--leaf-green);
    color: white;
    padding: 4px 12px;
    border-radius: 4px;
    font-size: 0.9rem;
    font-weight: 600;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

* {
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--off-white);
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Layout */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

header {
    background: white;
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,0.02);
}

.nav-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 800;
    font-size: 1.5rem;
    color: var(--leaf-green);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 32px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--leaf-green);
}

/* Presentation Styles */
.presentation-container {
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    position: relative;
    background: #000;
}

.slides-wrapper {
    display: flex;
    width: 1200vw; /* 12 slides */
    height: 100%;
    transition: transform 0.6s cubic-bezier(0.65, 0, 0.35, 1);
}

.slide {
    width: 100vw;
    height: 100vh;
    flex-shrink: 0;
    background: white;
    position: relative;
    padding: 60px;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.slide-content {
    max-width: 1100px;
    margin: 0 auto;
    width: 100%;
    animation: fadeIn 0.8s ease-out forwards;
}

.slide-header {
    margin-bottom: 40px;
    border-bottom: 3px solid var(--leaf-green);
    padding-bottom: 20px;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
}

.slide-header h2 {
    margin: 0;
    font-size: 3rem;
    color: var(--leaf-green);
}

.slide-header .page-num {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--light-green);
}

/* Controls */
.controls {
    position: fixed;
    bottom: 30px;
    right: 30px;
    display: flex;
    gap: 15px;
    z-index: 1000;
}

.control-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--leaf-green);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: none;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    transition: var(--transition);
    text-decoration: none;
}

.control-btn:hover {
    transform: scale(1.1);
    background: var(--text-dark);
}

/* Specific Slide Layouts */
.title-slide {
    background: linear-gradient(135deg, var(--leaf-green) 0%, #1b4332 100%);
    color: white;
    text-align: center;
}

.title-slide h1 {
    color: white;
    font-size: 5rem;
    margin-bottom: 10px;
}

.title-slide .subtitle {
    font-size: 2rem;
    opacity: 0.9;
    margin-bottom: 40px;
}

.title-slide .org-logos {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 60px;
}

.org-logo-placeholder {
    background: rgba(255,255,255,0.1);
    padding: 20px;
    border-radius: var(--radius-md);
    width: 150px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    text-align: center;
}

.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.objectives-list {
    list-style: none;
    padding: 0;
}

.objectives-list li {
    font-size: 1.4rem;
    margin-bottom: 20px;
    padding-left: 40px;
    position: relative;
}

.objectives-list li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--leaf-green);
    font-weight: bold;
}

.waste-card-large {
    border-radius: var(--radius-lg);
    padding: 30px;
    height: 100%;
}

.waste-card-large.wet { background: #e8f5e9; border: 2px solid #4caf50; }
.waste-card-large.dry { background: #fffde7; border: 2px solid #fbc02d; }
.waste-card-large.hazard { background: #ffebee; border: 2px solid #f44336; }

.image-placeholder-presentation {
    background: #f0f0f0;
    border-radius: var(--radius-md);
    width: 100%;
    height: 350px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px dashed #ccc;
    margin-top: 20px;
}

.image-grid-presentation {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
}

.small-img-placeholder {
    background: #eee;
    height: 120px;
    border-radius: 8px;
}

.highlight-box {
    background: #fff3e0;
    border-left: 8px solid #ff9800;
    padding: 20px;
    margin: 20px 0;
    font-size: 1.2rem;
}

/* Slide Navigation with radio buttons for no-JS interaction */
#slide1:checked ~ .slides-wrapper { transform: translateX(0); }
#slide2:checked ~ .slides-wrapper { transform: translateX(-100vw); }
#slide3:checked ~ .slides-wrapper { transform: translateX(-200vw); }
#slide4:checked ~ .slides-wrapper { transform: translateX(-300vw); }
#slide5:checked ~ .slides-wrapper { transform: translateX(-400vw); }
#slide6:checked ~ .slides-wrapper { transform: translateX(-500vw); }
#slide7:checked ~ .slides-wrapper { transform: translateX(-600vw); }
#slide8:checked ~ .slides-wrapper { transform: translateX(-700vw); }
#slide9:checked ~ .slides-wrapper { transform: translateX(-800vw); }
#slide10:checked ~ .slides-wrapper { transform: translateX(-900vw); }
#slide11:checked ~ .slides-wrapper { transform: translateX(-1000vw); }
#slide12:checked ~ .slides-wrapper { transform: translateX(-1100vw); }

.slide-nav {
    position: fixed;
    bottom: 35px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 8px;
    z-index: 1000;
}

.slide-nav label {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(0,0,0,0.2);
    cursor: pointer;
    transition: var(--transition);
}

#slide1:checked ~ .slide-nav label[for="slide1"],
#slide2:checked ~ .slide-nav label[for="slide2"],
#slide3:checked ~ .slide-nav label[for="slide3"],
#slide4:checked ~ .slide-nav label[for="slide4"],
#slide5:checked ~ .slide-nav label[for="slide5"],
#slide6:checked ~ .slide-nav label[for="slide6"],
#slide7:checked ~ .slide-nav label[for="slide7"],
#slide8:checked ~ .slide-nav label[for="slide8"],
#slide9:checked ~ .slide-nav label[for="slide9"],
#slide10:checked ~ .slide-nav label[for="slide10"],
#slide11:checked ~ .slide-nav label[for="slide11"],
#slide12:checked ~ .slide-nav label[for="slide12"] {
    background: var(--leaf-green);
    transform: scale(1.3);
}

.hidden-radio {
    display: none;
}

/* Original Styles (kept for compatibility if needed) */

.hero::after {
    content: '';
    position: absolute;
    bottom: -50px;
    right: -50px;
    width: 300px;
    height: 300px;
    background: var(--light-green);
    border-radius: 50%;
    opacity: 0.1;
    z-index: 0;
}

.hero-content {
    max-width: 800px;
    position: relative;
    z-index: 1;
}

h1 {
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 24px;
    color: var(--leaf-green);
}

.hero p {
    font-size: 1.25rem;
    color: #4a4a4a;
    margin-bottom: 32px;
}

.btn {
    display: inline-block;
    padding: 16px 32px;
    background: var(--leaf-green);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    transition: var(--transition);
    border: none;
    cursor: pointer;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(45, 106, 79, 0.2);
}

/* Sections */
section {
    padding: 100px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 60px;
}

.section-title h2 {
    font-size: 2.5rem;
    color: var(--leaf-green);
    margin-bottom: 16px;
}

.section-title p {
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* Waste Types Grid */
.waste-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.waste-card {
    background: white;
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.waste-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 6px;
    height: 100%;
}

.waste-card.wet::before { background: var(--wet-waste-blue); }
.waste-card.dry::before { background: var(--dry-waste-yellow); }
.waste-card.plastic::before { background: var(--plastic-red); }

.waste-card h3 {
    margin-top: 0;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    gap: 12px;
}

.waste-card ul {
    padding-left: 20px;
    color: #555;
}

.waste-card ul li {
    margin-bottom: 10px;
}

/* Process Steps */
.process-steps {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.step {
    display: flex;
    align-items: center;
    gap: 60px;
}

.step:nth-child(even) {
    flex-direction: row-reverse;
}

.step-content {
    flex: 1;
}

.step-image {
    flex: 1;
    background: #e8f5e9;
    height: 300px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
}

.step-number {
    font-size: 4rem;
    font-weight: 900;
    color: var(--light-green);
    opacity: 0.3;
    line-height: 1;
    margin-bottom: 10px;
}

/* Gram Panchayat Section */
.gp-box {
    background: var(--leaf-green);
    color: white;
    border-radius: var(--radius-lg);
    padding: 60px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.gp-box h2 {
    color: white;
}

.gp-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.stat-item {
    background: rgba(255,255,255,0.1);
    padding: 24px;
    border-radius: var(--radius-md);
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
}

/* Components */
.placeholder-icon {
    width: 48px;
    height: 48px;
    background: #f0fdf4;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--leaf-green);
}

.badge {
    display: inline-block;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 12px;
}

.badge-wet { background: #e3f2fd; color: #1976d2; }
.badge-dry { background: #fffde7; color: #fbc02d; }

footer {
    background: #111;
    color: #888;
    padding: 80px 0 40px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 80px;
    margin-bottom: 60px;
}

.footer-logo {
    color: white;
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 20px;
    display: block;
}

.footer-links h4 {
    color: white;
    margin-bottom: 24px;
}

.footer-links ul {
    list-style: none;
    padding: 0;
}

.footer-links ul li {
    margin-bottom: 12px;
}

.footer-bottom {
    border-top: 1px solid #222;
    padding-top: 40px;
    text-align: center;
}

@media (max-width: 992px) {
    .gp-box { grid-template-columns: 1fr; }
    .step { flex-direction: column !important; gap: 30px; }
    h1 { font-size: 2.5rem; }
}