/* 
  PlantDoctor Design System
  Nature-Luxe Theme
*/

:root {
    /* Colors */
    --primary: #4ADE80; /* Mint Green */
    --primary-dark: #22C55E;
    --secondary: #0D2C24; /* Deep Emerald */
    --accent: #FDE047; /* Sunlight Yellow */
    --bg-light: #F8FAFC;
    --bg-dark: #111827; /* Charcoal */
    --text-main: #1F2937;
    --text-muted: #6B7280;
    --white: #FFFFFF;
    
    /* Gradients */
    --grad-primary: linear-gradient(135deg, #4ADE80 0%, #22C55E 100%);
    --grad-dark: linear-gradient(135deg, #0D2C24 0%, #111827 100%);
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-light);
    color: var(--text-main);
    line-height: 1.6;
    overflow-x: hidden;
}

h1, h2, h3, h4 {
    font-family: 'Outfit', sans-serif;
    font-weight: 700;
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    display: block;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: 9999px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    gap: 0.5rem;
}

.btn-primary {
    background: var(--grad-primary);
    color: var(--white);
    box-shadow: var(--shadow-lg);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
    filter: brightness(1.1);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary);
    color: var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
}

/* Section Header */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-tag {
    color: var(--primary-dark);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
    display: block;
}

.section-title {
    font-size: 2.5rem;
    color: var(--secondary);
    margin-bottom: 1rem;
}

.section-desc {
    color: var(--text-muted);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Base Reveal Animation Initial State */
[data-reveal] {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-reveal].revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Header */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1.25rem 0;
    transition: var(--transition);
    background: transparent;
}

header.scrolled {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    padding: 0.75rem 0;
    box-shadow: var(--shadow-md);
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 800;
}

.logo-img {
    height: 40px;
    width: auto;
}

.logo-text span {
    color: var(--primary);
}

.nav-links {
    display: flex;
    gap: 2rem;
}

.nav-links a {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-main);
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
}

.hamburger .bar {
    width: 30px;
    height: 3px;
    background: var(--text-main);
    border-radius: 4px;
    transition: var(--transition);
}

/* Hero Section */
.hero {
    padding: 10rem 0 6rem;
    background: radial-gradient(circle at top right, rgba(74, 222, 128, 0.1), transparent),
                radial-gradient(circle at bottom left, rgba(13, 44, 36, 0.05), transparent);
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    gap: 4rem;
}

.badge {
    display: inline-block;
    padding: 0.5rem 1rem;
    background: rgba(74, 222, 128, 0.1);
    color: var(--primary-dark);
    font-weight: 700;
    font-size: 0.875rem;
    border-radius: 9999px;
    margin-bottom: 1.5rem;
}

.hero-title {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    color: var(--secondary);
}

.hero-title span {
    color: var(--primary);
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-muted);
    margin-bottom: 2.5rem;
    max-width: 500px;
}

.hero-btns {
    display: flex;
    gap: 1rem;
}

.store-btn img {
    height: 48px;
    transition: var(--transition);
}

.store-btn:hover img {
    transform: scale(1.05);
}

.hero-mockup-wrapper {
    position: relative;
    display: flex;
    justify-content: center;
}

.mockup-bg {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 120%;
    height: 120%;
    background: var(--grad-primary);
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.2;
    z-index: -1;
}

.hero-mockup {
    width: 100%;
    max-width: 400px;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

/* Stats Section */
.section {
    padding: 6rem 0;
}

.stats {
    background: var(--secondary);
    color: var(--white);
    padding: 4rem 0;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    text-align: center;
}

.stat-num {
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    opacity: 0.8;
}

/* Features Grid */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2.5rem;
}

.feature-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: 1.5rem;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    border: 1px solid rgba(0, 0, 0, 0.03);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--secondary);
}

.feature-card p {
    color: var(--text-muted);
}

/* Steps Grid */
.steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
    position: relative;
}

.step-item {
    text-align: center;
    position: relative;
}

.step-number {
    font-size: 5rem;
    font-weight: 900;
    color: rgba(74, 222, 128, 0.1);
    position: absolute;
    top: -1rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 0;
}

.step-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    position: relative;
    z-index: 1;
}

.step-item h3 {
    margin-bottom: 1rem;
    position: relative;
    z-index: 1;
}

/* Screenshots Slider */
.screenshot-slider-container {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
    overflow: hidden;
}

.mockup-frame {
    background: #000;
    border-radius: 3rem;
    padding: 1rem;
    border: 8px solid #333;
    max-width: 320px;
    margin: 0 auto;
    position: relative;
    box-shadow: var(--shadow-xl);
    overflow: hidden;
}

.slider-wrapper {
    display: flex;
    transition: transform 0.5s ease-in-out;
}

.slider-wrapper img {
    width: 100%;
    flex-shrink: 0;
}

.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: var(--white);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    font-size: 2rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    z-index: 10;
}

.slider-btn:hover {
    background: var(--primary);
    color: var(--white);
}

.slider-btn.prev { left: 10%; }
.slider-btn.next { right: 10%; }

.slider-dots {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 2rem;
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: #D1D5DB;
    cursor: pointer;
}

.dot.active {
    background: var(--primary);
    width: 25px;
    border-radius: 5px;
}

/* Pricing Section */
.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    align-items: flex-start;
}

.pricing-card {
    background: var(--white);
    padding: 3rem 2rem;
    border-radius: 2rem;
    text-align: center;
    box-shadow: var(--shadow-md);
    position: relative;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.pricing-card.featured {
    background: var(--secondary);
    color: var(--white);
    transform: scale(1.05);
    z-index: 2;
    box-shadow: var(--shadow-xl);
}

.best-value {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: var(--primary);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 700;
}

.card-header h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.price {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 2rem;
}

.price span {
    font-size: 1rem;
    font-weight: 400;
    opacity: 0.7;
}

.card-features {
    text-align: left;
    margin-bottom: 2.5rem;
}

.card-features li {
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.card-features .check { color: var(--primary); font-weight: bold; }
.card-features .cross { color: #EF4444; }
.card-features .disabled { opacity: 0.5; }

/* FAQ Accordion */
.faq-container {
    max-width: 800px;
}

.accordion-item {
    background: var(--white);
    border-radius: 1rem;
    margin-bottom: 1rem;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.accordion-header {
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: var(--transition);
}

.accordion-header h4 {
    font-size: 1.125rem;
}

.accordion-header:hover {
    background: rgba(74, 222, 128, 0.05);
}

.accordion-body {
    max-height: 0;
    overflow: hidden;
    transition: all 0.5s cubic-bezier(0, 1, 0, 1);
    padding: 0 2rem;
}

.accordion-item.active .accordion-body {
    max-height: 1000px;
    padding: 0 2rem 2.5rem;
    transition: all 0.5s cubic-bezier(1, 0, 1, 0);
}

.accordion-item.active .icon {
    transform: rotate(45deg);
    color: var(--primary);
}

/* Footer */
footer {
    background: #020617;
    color: var(--white);
    padding: 6rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 2fr;
    gap: 4rem;
    margin-bottom: 4rem;
}

.footer-brand p {
    margin-top: 1.5rem;
    opacity: 0.7;
}

.social-links {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
}

.social-links a:hover {
    background: var(--primary);
}

.footer-links h4, .footer-newsletter h4 {
    margin-bottom: 1.5rem;
    font-size: 1.25rem;
}

.footer-links ul li {
    margin-bottom: 0.75rem;
}

.footer-links ul li a {
    opacity: 0.7;
}

.footer-links ul li a:hover {
    opacity: 1;
    color: var(--primary);
}

.footer-newsletter p {
    opacity: 0.7;
    margin-bottom: 1.5rem;
}

.newsletter-form {
    display: flex;
    gap: 0.5rem;
}

.newsletter-form input {
    padding: 0.75rem 1.5rem;
    border-radius: 9999px;
    border: none;
    flex-grow: 1;
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 2rem;
    text-align: center;
    opacity: 0.5;
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-grid { grid-template-columns: 1fr; text-align: center; }
    .hero-subtitle { margin: 0 auto 2.5rem; }
    .hero-btns { justify-content: center; }
    .footer-grid { grid-template-columns: 1fr 1fr; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
    .main-nav {
        position: fixed;
        top: -100%;
        left: 0;
        width: 100%;
        background: var(--white);
        padding: 6rem 2rem 4rem;
        transition: var(--transition);
        box-shadow: var(--shadow-lg);
    }
    
    .main-nav.active { top: 0; }
    
    .nav-links {
        flex-direction: column;
        align-items: center;
        gap: 1.5rem;
    }
    
    .hamburger { display: flex; z-index: 1001; }
    .hamburger.active .bar:nth-child(1) { transform: rotate(45deg) translate(8px, 8px); }
    .hamburger.active .bar:nth-child(2) { opacity: 0; }
    .hamburger.active .bar:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
    
    .hero-title { font-size: 3rem; }
    .steps-grid { grid-template-columns: 1fr; }
    .pricing-card.featured { transform: scale(1); }
    .footer-grid { grid-template-columns: 1fr; gap: 2.5rem; }
}