:root {
    --brand-green: #00B241;
    --text: #111827;
    --text-muted: #6b7280;
    --border: #e5e7eb;
    --bg: #ffffff;
    --bg-alt: #f9fafb;
    --card-bg: #ffffff;
    --card-image-bg: #e5e7eb;
    --nav-bg: rgba(255, 255, 255, 0.8);
    --overlay-bg: #ffffff;
}

:root[data-theme="dark"] {
    --text: #f3f4f6;
    --text-muted: #9ca3af;
    --border: #333944;
    --bg: #111318;
    --bg-alt: #181b21;
    --card-bg: #1b1e24;
    --card-image-bg: #262b33;
    --nav-bg: rgba(17, 19, 24, 0.8);
    --overlay-bg: #111318;
}

:root[data-theme="light"] {
    --text: #111827;
    --text-muted: #6b7280;
    --border: #e5e7eb;
    --bg: #ffffff;
    --bg-alt: #f9fafb;
    --card-bg: #ffffff;
    --card-image-bg: #e5e7eb;
    --nav-bg: rgba(255, 255, 255, 0.8);
    --overlay-bg: #ffffff;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text);
    background: var(--bg);
    transition: background-color 0.2s ease, color 0.2s ease;
}

a {
    text-decoration: none;
    color: inherit;
}

button {
    font: inherit;
    cursor: pointer;
}

/* Animations */
@keyframes fadeInLeft {
    from { opacity: 0; transform: translateX(-20px); }
    to { opacity: 1; transform: translateX(0); }
}

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

@keyframes zoomIn {
    from { opacity: 0; transform: scale(0.9); }
    to { opacity: 1; transform: scale(1); }
}

@keyframes bounceIn {
    0% { opacity: 0; transform: scale(0.3); }
    50% { opacity: 1; transform: scale(1.05); }
    70% { transform: scale(0.9); }
    100% { transform: scale(1); }
}

.animate-fade-left { animation: fadeInLeft 0.6s ease both; }
.animate-zoom-in { animation: zoomIn 0.6s ease both; }
.animate-fade-up { animation: fadeInUp 0.6s ease 0.3s both; }
.animate-bounce-in { animation: bounceIn 0.8s ease 0.3s both; }

.hover-scale {
    transition: transform 0.3s ease;
}

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

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 50;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: var(--nav-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--brand-green);
    margin: 0;
}

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

.nav-links {
    display: flex;
    gap: 1.5rem;
    align-items: center;
}

.nav-links a {
    display: inline-block;
    padding: 0.5rem 1rem;
    border: 2px solid transparent;
    border-radius: 9999px;
    transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

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

.nav-links a.active {
    background: var(--brand-green);
    border-color: var(--brand-green);
    color: #fff;
}

.btn {
    display: inline-block;
    background: var(--brand-green);
    color: #fff;
    padding: 0.5rem 1rem;
    border: 2px solid var(--brand-green);
    border-radius: 9999px;
    transition: opacity 0.2s ease;
}

.btn:hover {
    opacity: 0.9;
}

.menu-btn {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.theme-toggle-btn {
    position: relative;
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 9999px;
    width: 3.25rem;
    height: 1.75rem;
    padding: 0;
    flex-shrink: 0;
}

.theme-toggle-knob {
    position: absolute;
    top: 0.25rem;
    left: 0.25rem;
    z-index: 1;
    width: 1.25rem;
    height: 1.25rem;
    border-radius: 50%;
    background: var(--brand-green);
    transform: translateX(0);
    transition: transform 0.2s ease;
}

.theme-toggle-btn[aria-checked="true"] .theme-toggle-knob {
    transform: translateX(1.5rem);
}

.theme-icon {
    position: absolute;
    top: 50%;
    z-index: 2;
    width: 0.75rem;
    height: 0.75rem;
    transform: translateY(-50%);
    color: var(--text-muted);
    transition: color 0.2s ease;
    pointer-events: none;
}

.theme-icon-sun {
    left: 0.5rem;
    color: #fff;
}

.theme-icon-moon {
    right: 0.5rem;
}

.theme-toggle-btn[aria-checked="true"] .theme-icon-sun {
    color: var(--text-muted);
}

.theme-toggle-btn[aria-checked="true"] .theme-icon-moon {
    color: #fff;
}

@media (max-width: 767px) {
    .nav-links { display: none; }
    .menu-btn { display: block; }
}

/* Mobile menu */
.mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 60;
    background: var(--overlay-bg);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    font-size: 1.125rem;
}

.mobile-menu.hidden {
    display: none;
}

.mobile-menu a {
    padding: 0.5rem 1.25rem;
    border: 2px solid transparent;
    border-radius: 9999px;
    transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.mobile-menu a:hover {
    border-color: var(--brand-green);
    color: var(--brand-green);
}

.mobile-menu a.active {
    background: var(--brand-green);
    border-color: var(--brand-green);
    color: #fff;
}

@media (min-width: 768px) {
    .mobile-menu {
        display: none !important;
    }
}

.close-btn {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-size: 2rem;
    background: none;
    border: none;
    color: var(--text);
}

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 1rem;
    background: linear-gradient(to bottom, var(--bg-alt), var(--bg));
}

.hero h2 {
    font-size: 2.5rem;
    font-weight: 700;
    margin: 0 0 1.5rem;
}

@media (min-width: 768px) {
    .hero h2 { font-size: 4rem; }
}

.hero p {
    color: var(--text-muted);
    margin: 0 0 2rem;
    max-width: 42rem;
}

/* Sections */
.section {
    padding: 5rem 1.5rem;
    max-width: 80rem;
    margin: 0 auto;
}

.section-title {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
    margin: 0 0 3rem;
}

.section-alt {
    background: var(--bg-alt);
}

/* Product cards */
.products-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

@media (min-width: 768px) {
    .products-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 1024px) {
    .products-grid { grid-template-columns: repeat(4, 1fr); }
}

.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 1rem;
    overflow: hidden;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
    display: flex;
    flex-direction: column;
}

.card-image {
    height: 12rem;
    background: var(--card-image-bg);
    display: block;
    width: 100%;
    object-fit: cover;
}

.card-body {
    padding: 1rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}

.card-body h4 {
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 0.25rem;
}

.card-body p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin: 0 0 0.75rem;
}

.card-price {
    font-size: 1.125rem;
    font-weight: 700;
    color: var(--brand-green);
    margin-top: auto;
    padding-top: 0.5rem;
    margin-bottom: 0.75rem;
}

.card-buy {
    background: var(--brand-green);
    color: #fff;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 0.5rem;
    font-size: 0.875rem;
    width: 100%;
}

/* Services */
.services-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

@media (min-width: 768px) {
    .services-grid { grid-template-columns: repeat(2, 1fr); }
}

.service-card {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--card-bg);
    border-radius: 1rem;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

.service-icon {
    font-size: 2.25rem;
    color: var(--brand-green);
}

.service-card h4 {
    font-size: 1rem;
    font-weight: 600;
    margin: 0 0 0.25rem;
}

.service-card p {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin: 0;
}

.service-link {
    display: inline-block;
    margin-top: 1rem;
    background: none;
    border: none;
    padding: 0;
    color: var(--brand-green);
    font-weight: 600;
    font-size: 0.875rem;
    text-align: left;
}

.service-link:hover {
    text-decoration: underline;
}

/* Footer */
.footer {
    padding: 3rem 1.5rem;
    text-align: center;
    border-top: 1px solid var(--border);
}

.footer p {
    color: var(--text-muted);
    margin: 0 0 1rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.footer-links a {
    color: var(--text-muted);
    transition: color 0.2s ease;
}

.footer-links a:hover {
    color: var(--brand-green);
}