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

:root {
    --orange: #DC662D;
    --orange-light: #ff7a3d;
    --primary-green: #2d5016;
    --light-green: #4a7c2c;
    --accent-green: #6fb93e;
    --dark-green: #1a2e15;
    --primary-blue: #2196F3;
    --light-blue: #4a9eff;
    --accent-blue: #64B5F6;
    --dark-bg: #0a0e0a;
    --light-bg: #1a1f1a;
    --text-light: #e8f5e9;
    --text-dark: #1b5e20;
    --warning: #ff6b35;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0a0e0a 0%, #1a1f1a 50%, #0d1a0d 100%);
    color: var(--text-light);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Sidebar Navigation */
.sidebar-nav {
    position: fixed;
    left: 0;
    top: 0;
    width: 280px;
    height: 100vh;
    background: rgba(26, 31, 26, 0.95);
    backdrop-filter: blur(10px);
    padding: 2rem 1.5rem;
    z-index: 100;
    border-right: 1px solid rgba(111, 185, 62, 0.2);
    display: flex;
    flex-direction: column;
}

.nav-header {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--accent-green);
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid rgba(111, 185, 62, 0.3);
}

.nav-list {
    list-style: none;
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    margin-bottom: 0.5rem;
    cursor: pointer;
    border-radius: 10px;
    transition: all 0.3s ease;
    position: relative;
}

.nav-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 0;
    background: var(--accent-green);
    transition: height 0.3s ease;
}

.nav-item:hover {
    background: rgba(111, 185, 62, 0.1);
}

.nav-item.active {
    background: rgba(111, 185, 62, 0.15);
}

.nav-item.active::before {
    height: 80%;
}

.nav-number {
    width: 30px;
    height: 30px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary-green);
    color: var(--accent-green);
    border-radius: 50%;
    font-weight: 600;
    font-size: 0.9rem;
    flex-shrink: 0;
}

.nav-item.active .nav-number {
    background: linear-gradient(135deg, var(--light-green), var(--accent-green));
    color: var(--dark-bg);
}

.nav-text {
    color: var(--text-light);
    font-size: 0.95rem;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.nav-item.active .nav-text {
    opacity: 1;
    font-weight: 500;
}

.progress-bar {
    width: 100%;
    height: 4px;
    background: rgba(111, 185, 62, 0.2);
    border-radius: 2px;
    margin-top: 2rem;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--light-green), var(--accent-green));
    width: 0%;
    transition: width 0.3s ease;
}

.nav-articles-btn {
    display: block;
    margin-top: 1.5rem;
    padding: 0.8rem 1.5rem;
    background: linear-gradient(135deg, #DC662D, #ff7a3d);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(220, 102, 45, 0.3);
}

.nav-articles-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(220, 102, 45, 0.5);
    background: linear-gradient(135deg, #ff7a3d, #DC662D);
}

/* Content Wrapper - Scrollable */
.content-wrapper {
    position: relative;
    margin-left: 280px;
}

/* Hero Section */
.hero {
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 2rem;
    background: radial-gradient(circle at center, rgba(33, 150, 243, 0.15) 0%, rgba(42, 80, 22, 0.2) 50%, transparent 70%);
    position: relative;
}

.brand-name {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    color: #DC662D;
    letter-spacing: 4px;
    margin-bottom: 1rem;
    text-shadow: 0 0 30px rgba(220, 102, 45, 0.4);
    animation: fadeInDown 1s ease-out;
}

@keyframes fadeInDown {
    0% {
        opacity: 0;
        transform: translateY(-30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero h1 {
    font-size: clamp(2.5rem, 8vw, 5rem);
    font-weight: 700;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--accent-blue), var(--accent-green), var(--light-blue));
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-shadow: 0 0 40px rgba(33, 150, 243, 0.3);
    animation: fadeInUp 1s ease-out 0.2s both, gradientSweep 4s ease-in-out infinite;
}

@keyframes fadeInUp {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.subtitle {
    font-size: clamp(1rem, 3vw, 1.5rem);
    color: var(--text-light);
    opacity: 0;
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.hero-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    background: linear-gradient(135deg, #DC662D, #ff7a3d);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(220, 102, 45, 0.3);
    margin-bottom: 3rem;
    opacity: 0;
    transform: scale(0.8);
    animation: scaleIn 0.8s ease-out 0.6s both;
}

@keyframes scaleIn {
    0% {
        opacity: 0;
        transform: scale(0.8);
    }
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.hero-button:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 15px 40px rgba(220, 102, 45, 0.5);
    background: linear-gradient(135deg, #ff7a3d, #DC662D);
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: 3rem;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    animation: fadeInBounce 2s ease-in-out infinite;
    z-index: 10;
}

.scroll-indicator span {
    font-size: 0.9rem;
    opacity: 0.7;
    letter-spacing: 2px;
    text-transform: uppercase;
}

.arrow-down {
    width: 30px;
    height: 30px;
    border-left: 3px solid var(--accent-green);
    border-bottom: 3px solid var(--accent-green);
    transform: rotate(-45deg);
}

@keyframes fadeInBounce {
    0%, 100% {
        transform: translate(-50%, 0);
        opacity: 0.7;
    }
    50% {
        transform: translate(-50%, 10px);
        opacity: 1;
    }
}

/* Main Content */
main {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Stage Sections */
.stage {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 4rem 0;
    position: relative;
}

.stage-content {
    background: rgba(26, 31, 26, 0.85);
    backdrop-filter: blur(10px);
    border-radius: 20px;
    padding: 3rem;
    width: 100%;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    border: 1px solid rgba(111, 185, 62, 0.2);
    transform: translateY(50px);
    opacity: 0;
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.stage-content.visible {
    transform: translateY(0);
    opacity: 1;
}

.stage-content h2 {
    font-size: clamp(2rem, 5vw, 3rem);
    background: linear-gradient(135deg, var(--light-green), var(--accent-green), var(--light-green));
    background-size: 200% auto;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1rem;
    position: relative;
    padding-bottom: 1rem;
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.stage-content.visible h2 {
    opacity: 1;
    transform: translateY(0);
    animation: gradientSweep 3s ease-in-out infinite;
}

@keyframes gradientSweep {
    0%, 100% {
        background-position: 0% center;
    }
    50% {
        background-position: 100% center;
    }
}

.stage-content h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--light-green), var(--accent-green), transparent);
}

.stage-number {
    display: inline-block;
    background: var(--primary-green);
    color: var(--accent-green);
    padding: 0.5rem 1.5rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    margin-bottom: 1.5rem;
    letter-spacing: 1px;
    opacity: 0;
    transform: scale(0.5) rotate(-10deg);
    transition: all 0.6s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.stage-content.visible .stage-number {
    opacity: 1;
    transform: scale(1) rotate(0deg);
}

.stage-image {
    width: 100%;
    max-width: 600px;
    height: 300px;
    object-fit: cover;
    border-radius: 15px;
    margin: 1.5rem 0 2rem 0;
    box-shadow: 0 10px 30px rgba(111, 185, 62, 0.3);
    border: 2px solid rgba(111, 185, 62, 0.3);
    opacity: 0;
    transform: scale(0.95);
    filter: blur(5px);
    transition: all 0.8s ease-out;
}

.stage-content.visible .stage-image {
    opacity: 1;
    transform: scale(1);
    filter: blur(0);
}

.stage-content h3 {
    font-size: 1.5rem;
    color: var(--accent-green);
    margin-top: 2rem;
    margin-bottom: 1rem;
    opacity: 0;
    transform: translateX(-30px);
    transition: all 0.6s ease-out;
}

.stage-content.visible h3 {
    opacity: 1;
    transform: translateX(0);
}

.stage-content.visible h3:nth-of-type(1) { transition-delay: 0.2s; }
.stage-content.visible h3:nth-of-type(2) { transition-delay: 0.3s; }
.stage-content.visible h3:nth-of-type(3) { transition-delay: 0.4s; }
.stage-content.visible h3:nth-of-type(4) { transition-delay: 0.5s; }
.stage-content.visible h3:nth-of-type(5) { transition-delay: 0.6s; }

.stage-content h4 {
    font-size: 1.2rem;
    color: var(--accent-green);
    margin-top: 1.5rem;
    margin-bottom: 0.8rem;
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.5s ease-out;
}

.stage-content.visible h4 {
    opacity: 1;
    transform: translateX(0);
}

.stage-content.visible h4:nth-of-type(1) { transition-delay: 0.25s; }
.stage-content.visible h4:nth-of-type(2) { transition-delay: 0.35s; }
.stage-content.visible h4:nth-of-type(3) { transition-delay: 0.45s; }
.stage-content.visible h4:nth-of-type(4) { transition-delay: 0.55s; }

.stage-content p {
    margin-bottom: 1.2rem;
    font-size: 1.05rem;
    line-height: 1.8;
    color: rgba(232, 245, 233, 0.9);
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease-out;
}

.stage-content.visible p {
    opacity: 1;
    transform: translateY(0);
}

.stage-content.visible p:nth-of-type(1) { transition-delay: 0.15s; }
.stage-content.visible p:nth-of-type(2) { transition-delay: 0.2s; }
.stage-content.visible p:nth-of-type(3) { transition-delay: 0.25s; }
.stage-content.visible p:nth-of-type(4) { transition-delay: 0.3s; }
.stage-content.visible p:nth-of-type(5) { transition-delay: 0.35s; }

.stage-content ul {
    list-style: none;
    margin: 1rem 0 1.5rem 0;
}

.stage-content ul li {
    padding-left: 1.5rem;
    margin-bottom: 0.8rem;
    position: relative;
    line-height: 1.7;
    opacity: 0;
    transform: translateX(-20px);
    transition: all 0.5s ease-out;
}

.stage-content.visible ul li {
    opacity: 1;
    transform: translateX(0);
}

.stage-content.visible ul li:nth-child(1) { transition-delay: 0.1s; }
.stage-content.visible ul li:nth-child(2) { transition-delay: 0.15s; }
.stage-content.visible ul li:nth-child(3) { transition-delay: 0.2s; }
.stage-content.visible ul li:nth-child(4) { transition-delay: 0.25s; }
.stage-content.visible ul li:nth-child(5) { transition-delay: 0.3s; }
.stage-content.visible ul li:nth-child(6) { transition-delay: 0.35s; }
.stage-content.visible ul li:nth-child(7) { transition-delay: 0.4s; }
.stage-content.visible ul li:nth-child(8) { transition-delay: 0.45s; }
.stage-content.visible ul li:nth-child(9) { transition-delay: 0.5s; }
.stage-content.visible ul li:nth-child(10) { transition-delay: 0.55s; }

.stage-content ul li::before {
    content: '🌿';
    position: absolute;
    left: 0;
    font-size: 0.9rem;
}

.stage-content strong {
    color: var(--accent-green);
    font-weight: 600;
}

.warning {
    background: rgba(255, 107, 53, 0.1);
    border-left: 3px solid var(--warning);
    padding: 1rem 1.5rem;
    border-radius: 5px;
    margin: 1.5rem 0;
    color: #ffccbc;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.6s ease-out;
    position: relative;
}

.stage-content.visible .warning {
    opacity: 1;
    transform: translateY(0);
    animation: pulseGlow 2s ease-in-out infinite;
}

@keyframes pulseGlow {
    0%, 100% {
        box-shadow: 0 0 5px rgba(255, 107, 53, 0.2);
    }
    50% {
        box-shadow: 0 0 20px rgba(255, 107, 53, 0.4);
    }
}

.stage-button {
    display: inline-block;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, #DC662D, #ff7a3d);
    color: white;
    text-decoration: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    transition: all 0.3s ease;
    box-shadow: 0 10px 30px rgba(220, 102, 45, 0.3);
    margin-top: 2rem;
    text-align: center;
    opacity: 0;
    transform: translateY(20px) scale(0.9);
}

.stage-content.visible .stage-button {
    opacity: 1;
    transform: translateY(0) scale(1);
    transition-delay: 0.4s;
}

.stage-button:hover {
    transform: translateY(-3px) scale(1.05);
    box-shadow: 0 15px 40px rgba(220, 102, 45, 0.5);
    background: linear-gradient(135deg, #ff7a3d, #DC662D);
}

/* Animated Icons */
.animated-icon {
    position: absolute;
    top: 2rem;
    right: 2rem;
    width: 80px;
    height: 80px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.animated-icon svg {
    width: 100%;
    height: 100%;
    color: var(--accent-green);
    filter: drop-shadow(0 5px 15px rgba(111, 185, 62, 0.4));
    transition: all 0.3s ease;
}

.animated-icon:hover svg {
    transform: scale(1.1);
    color: var(--light-green);
    filter: drop-shadow(0 8px 25px rgba(111, 185, 62, 0.6));
}

/* Ripple effect on click */
.animated-icon::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(111, 185, 62, 0.4);
    transform: translate(-50%, -50%);
    opacity: 0;
}

.animated-icon.clicked::after {
    animation: ripple 0.6s ease-out;
}

@keyframes ripple {
    0% {
        width: 0;
        height: 0;
        opacity: 0.6;
    }
    100% {
        width: 120px;
        height: 120px;
        opacity: 0;
    }
}

/* Stage 0: Water Drops Animation */
.animated-icon.active[data-stage="0"] .drop {
    animation: dropFloat 3s ease-in-out infinite;
}

.animated-icon.active[data-stage="0"] .drop-1 {
    animation-delay: 0s;
}

.animated-icon.active[data-stage="0"] .drop-2 {
    animation-delay: 0.4s;
}

.animated-icon.active[data-stage="0"] .drop-3 {
    animation-delay: 0.8s;
}

.animated-icon.active[data-stage="0"] .drop-4 {
    animation: smallDropFall 2s ease-in-out infinite;
    animation-delay: 1.2s;
}

.animated-icon.active[data-stage="0"] .drop-5 {
    animation: smallDropFall 2s ease-in-out infinite;
    animation-delay: 1.5s;
}

.animated-icon.active[data-stage="0"] .drop-6 {
    animation: smallDropFall 2s ease-in-out infinite;
    animation-delay: 1.8s;
}

.animated-icon.active[data-stage="0"] .ripple {
    animation: rippleWave 2s ease-out infinite;
}

.animated-icon.active[data-stage="0"] .ripple-1 {
    animation-delay: 0.2s;
}

.animated-icon.active[data-stage="0"] .ripple-2 {
    animation-delay: 0.5s;
}

@keyframes dropFloat {
    0%, 100% {
        transform: translateY(0) scale(1);
        opacity: 0.9;
    }
    50% {
        transform: translateY(-8px) scale(1.05);
        opacity: 1;
    }
}

@keyframes smallDropFall {
    0% {
        opacity: 0;
        transform: translateY(-10px);
    }
    50% {
        opacity: 1;
    }
    100% {
        opacity: 0;
        transform: translateY(15px);
    }
}

@keyframes rippleWave {
    0% {
        opacity: 0;
        transform: scale(0.8);
    }
    50% {
        opacity: 0.6;
        transform: scale(1);
    }
    100% {
        opacity: 0;
        transform: scale(1.2);
    }
}

/* Stage 1: Timer Animation */
.animated-icon.active[data-stage="1"] .hour-hand {
    animation: rotateHour 3s linear infinite;
}

.animated-icon.active[data-stage="1"] .minute-hand {
    animation: rotateMinute 3s linear infinite;
}

.animated-icon.active[data-stage="1"] .timer-drop {
    animation: timerDrop 2s ease-in-out infinite;
}

.animated-icon.active[data-stage="1"] .drop-1 {
    animation-delay: 0s;
}

.animated-icon.active[data-stage="1"] .drop-2 {
    animation-delay: 0.3s;
}

.animated-icon.active[data-stage="1"] .drop-3 {
    animation-delay: 0.6s;
}

@keyframes rotateHour {
    0% {
        transform-origin: 50px 50px;
        transform: rotate(0deg);
    }
    100% {
        transform-origin: 50px 50px;
        transform: rotate(360deg);
    }
}

@keyframes rotateMinute {
    0% {
        transform-origin: 50px 50px;
        transform: rotate(0deg);
    }
    100% {
        transform-origin: 50px 50px;
        transform: rotate(720deg);
    }
}

@keyframes timerDrop {
    0%, 100% {
        opacity: 0;
        r: 2;
    }
    50% {
        opacity: 1;
        r: 3;
    }
}

/* Stage 2: pH Meter Animation */
.animated-icon.active[data-stage="2"] .probe {
    animation: dipProbe 2s ease-in-out infinite;
}

.animated-icon.active[data-stage="2"] .wave {
    animation: waveMotion 1.5s ease-in-out infinite;
}

.animated-icon.active[data-stage="2"] .bubble {
    animation: bubbleRise 2s ease-in-out infinite;
}

.animated-icon.active[data-stage="2"] .bubble-1 {
    animation-delay: 0.5s;
}

.animated-icon.active[data-stage="2"] .bubble-2 {
    animation-delay: 0.8s;
}

.animated-icon.active[data-stage="2"] .bubble-3 {
    animation-delay: 1.1s;
}

@keyframes dipProbe {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(5px);
    }
}

@keyframes waveMotion {
    0%, 100% {
        d: path("M37,55 Q42,52 47,55 T57,55 T63,55");
    }
    50% {
        d: path("M37,55 Q42,58 47,55 T57,55 T63,55");
    }
}

@keyframes bubbleRise {
    0% {
        opacity: 0;
        transform: translateY(0);
    }
    30% {
        opacity: 0.8;
    }
    100% {
        opacity: 0;
        transform: translateY(-20px);
    }
}

/* Stage 3: Watering Can Animation */
.animated-icon.active[data-stage="3"] .drip {
    animation: wateringDrop 2s ease-in infinite;
}

.animated-icon.active[data-stage="3"] .drip-1 {
    animation-delay: 0s;
}

.animated-icon.active[data-stage="3"] .drip-2 {
    animation-delay: 0.4s;
}

.animated-icon.active[data-stage="3"] .drip-3 {
    animation-delay: 0.8s;
}

.animated-icon.active[data-stage="3"] .splash {
    animation: splashWave 2s ease-out infinite;
}

.animated-icon.active[data-stage="3"] .splash-1 {
    animation-delay: 0.3s;
}

.animated-icon.active[data-stage="3"] .splash-2 {
    animation-delay: 0.6s;
}

@keyframes wateringDrop {
    0% {
        opacity: 0;
        transform: translateY(0);
    }
    20% {
        opacity: 1;
    }
    80% {
        opacity: 0.8;
        transform: translateY(20px);
    }
    100% {
        opacity: 0;
        transform: translateY(25px);
    }
}

@keyframes splashWave {
    0% {
        opacity: 0;
        stroke-width: 1;
    }
    30% {
        opacity: 0.8;
        stroke-width: 2;
    }
    100% {
        opacity: 0;
        stroke-width: 0.5;
    }
}

/* Stage 4: Checkmarks Animation */
.animated-icon.active[data-stage="4"] .checkmark {
    animation: checkDraw 2s ease-out infinite;
}

.animated-icon.active[data-stage="4"] .checkmark-1 {
    animation-delay: 0s;
}

.animated-icon.active[data-stage="4"] .checkmark-2 {
    animation-delay: 0.3s;
}

.animated-icon.active[data-stage="4"] .checkmark-3 {
    animation-delay: 0.6s;
}

.animated-icon.active[data-stage="4"] .sparkle {
    animation: sparkleShine 2s ease-out infinite;
}

.animated-icon.active[data-stage="4"] .sparkle-1 {
    animation-delay: 0.8s;
}

.animated-icon.active[data-stage="4"] .sparkle-2 {
    animation-delay: 1.1s;
}

.animated-icon.active[data-stage="4"] .sparkle-3 {
    animation-delay: 1.4s;
}

.animated-icon.active[data-stage="4"] .sparkle-4 {
    animation-delay: 1.7s;
}

@keyframes checkDraw {
    0% {
        opacity: 0;
        stroke-dasharray: 100;
        stroke-dashoffset: 100;
    }
    40% {
        opacity: 1;
        stroke-dashoffset: 0;
    }
    80%, 100% {
        opacity: 1;
        stroke-dashoffset: 0;
        stroke-dasharray: 100;
        stroke-dashoffset: 100;
    }
    30%, 70% {
        opacity: 1;
        stroke-dasharray: 100;
        stroke-dashoffset: 0;
    }
}

@keyframes sparkleShine {
    0%, 20%, 100% {
        opacity: 0;
        transform: scale(0);
    }
    40%, 60% {
        opacity: 1;
        transform: scale(1.5);
    }
}

/* Back to Top Button */
.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #DC662D, #ff7a3d);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 20px rgba(220, 102, 45, 0.4);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(220, 102, 45, 0.6);
    background: linear-gradient(135deg, #ff7a3d, #DC662D);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}

/* Footer */
footer {
    padding: 4rem 2rem;
    text-align: center;
    background: rgba(10, 14, 10, 0.8);
}

.footer-content {
    max-width: 800px;
    margin: 0 auto;
}

.footer-content p {
    margin-bottom: 1rem;
    opacity: 0.7;
}

.disclaimer {
    font-size: 0.9rem;
    color: var(--warning);
    padding: 1rem;
    border: 1px solid var(--warning);
    border-radius: 10px;
    background: rgba(255, 107, 53, 0.05);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .sidebar-nav {
        width: 250px;
    }

    .content-wrapper {
        margin-left: 250px;
    }
}

@media (max-width: 768px) {
    .sidebar-nav {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

    .sidebar-nav.mobile-open {
        transform: translateX(0);
    }

    .content-wrapper {
        margin-left: 0;
    }

    .hero h1 {
        font-size: 2.5rem;
    }

    .brand-name {
        font-size: 2rem;
    }

    .hero-button {
        font-size: 1rem;
        padding: 0.9rem 2rem;
    }

    .stage-content {
        padding: 2rem 1.5rem;
    }

    .stage {
        padding: 3rem 0;
    }

    main {
        padding: 0 1rem;
    }

    .stage-content h2 {
        font-size: 2rem;
    }

    .stage-content h3 {
        font-size: 1.3rem;
    }

    .stage-image {
        height: 200px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 1rem;
    }

    .brand-name {
        font-size: 1.5rem;
        letter-spacing: 2px;
    }

    .hero-button {
        font-size: 0.9rem;
        padding: 0.8rem 1.5rem;
    }

    .stage-content {
        padding: 1.5rem;
    }

    .stage-content p,
    .stage-content li {
        font-size: 0.95rem;
    }

    .stage-image {
        height: 180px;
    }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--dark-bg);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-green);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--light-green);
}

/* Loading Animation */
@keyframes plantGrow {
    from {
        transform: scaleY(0);
        transform-origin: bottom;
    }
    to {
        transform: scaleY(1);
        transform-origin: bottom;
    }
}