/* Variables / Design System */
:root {
    /* Colors */
    --color-primary: #1A3E26; /* Deep forest green */
    --color-primary-dark: #0A1C11; /* Very dark forest green */
    --color-primary-light: #2C5B3B;
    --color-secondary: #EAF0E4; /* Light botanical green/beige */
    --color-bg: #FAFAF8; /* Soft cream/beige background */
    --color-surface: #FFFFFF;
    --color-text: #1F2923; /* Dark charcoal with green tint */
    --color-text-light: #5A6A61;
    --color-border: #E0E6DD;
    
    /* Typography */
    --font-heading: 'Cormorant Garamond', serif;
    --font-body: 'Montserrat', sans-serif;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.6s cubic-bezier(0.16, 1, 0.3, 1);
    
    /* Spacing */
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 2rem;
    --space-xl: 4rem;
    --space-2xl: 6rem;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    color: var(--color-text);
    background-color: var(--color-bg);
    line-height: 1.6;
    overflow-x: hidden;
    font-weight: 400;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-primary);
    line-height: 1.2;
    font-weight: 400;
}

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

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

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.section {
    padding: var(--space-2xl) 0;
}

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

.mt-4 {
    margin-top: var(--space-xl);
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.875rem 1.75rem;
    border-radius: 30px;
    font-weight: 500;
    font-size: 0.95rem;
    cursor: pointer;
    text-align: center;
    transition: var(--transition-normal);
    border: 1px solid transparent;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-light);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(26, 62, 38, 0.2);
}

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

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

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

/* Header & Nav */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    padding: 1rem 0;
    transition: var(--transition-normal);
    background-color: rgba(250, 250, 248, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid transparent;
}

.header.scrolled {
    padding: 0.5rem 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border-bottom-color: var(--color-border);
}

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

.logo img {
    height: 240px;
    margin: -60px 0;
    transform: scale(1.5) translateX(15px);
    transform-origin: left center;
    mix-blend-mode: multiply;
    transition: var(--transition-normal);
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-light);
    position: relative;
}

.nav-link:hover, .nav-link.active {
    color: var(--color-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0%;
    height: 1px;
    background-color: var(--color-primary);
    transition: var(--transition-normal);
}

.nav-link:hover::after, .nav-link.active::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    gap: 5px;
}

.menu-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--color-primary);
    transition: var(--transition-normal);
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px; /* offset for header */
    background: radial-gradient(circle at top right, var(--color-secondary), transparent 60%);
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.hero-title {
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    color: var(--color-text-light);
    margin-bottom: 2.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* Services Section */
.services {
    background-color: var(--color-secondary);
}

.section-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    background-color: var(--color-secondary);
    color: var(--color-primary);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(2rem, 3vw, 2.5rem);
    margin-bottom: var(--space-xl);
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.service-card {
    background-color: var(--color-surface);
    border: none;
    border-radius: 20px;
    padding: 3rem 2rem 2rem 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100%;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.03);
    transition: var(--transition-normal);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.08);
}

.service-icon {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    margin-bottom: 2rem;
}

.icon-light-green { background-color: #DCE5D6; }
.icon-dark-green { background-color: #355E3B; }
.icon-beige { background-color: #DECFB1; }

.service-content {
    flex-grow: 1;
}

.service-separator {
    width: 80%;
    height: 1px;
    background-color: var(--color-border);
    border: none;
    margin: 2rem auto;
}

.service-title {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    font-family: var(--font-heading);
    font-weight: 500;
}

.service-desc {
    color: var(--color-text-light);
    margin-bottom: 0;
    font-size: 0.95rem;
}

.service-link {
    color: var(--color-primary);
    font-weight: 500;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    transition: var(--transition-normal);
}

.service-card:hover .service-link {
    transform: translateX(5px);
}

/* Portfolio & Contact */
.portfolio-cta {
    background-color: transparent;
    border: none;
}

.contact-cta {
    background-color: var(--color-primary-dark);
    color: var(--color-secondary);
    border: none;
}

.contact-cta .section-title,
.contact-cta .section-subtitle {
    color: var(--color-secondary);
}

.contact-cta .btn {
    background-color: var(--color-secondary);
    color: var(--color-primary);
    border: none;
}

.contact-cta .btn:hover {
    background-color: #d1dac6;
    color: var(--color-primary);
}

/* Footer */
.footer {
    background-color: var(--color-bg);
    padding: 3rem 0;
    border-top: 1px solid var(--color-border);
}

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

.logo-img-small {
    height: 180px;
    margin: -40px 0;
    transform: scale(1.5);
    mix-blend-mode: multiply;
    transition: var(--transition-normal);
}

.logo-img-small:hover {
    filter: grayscale(0%) opacity(1);
}

.footer-copyright {
    color: var(--color-text-light);
    font-size: 0.9rem;
}

.footer-links {
    display: flex;
    gap: 1.5rem;
}

.footer-links a {
    color: var(--color-text-light);
    font-size: 0.9rem;
}

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

/* WhatsApp Floating Button */
.whatsapp-btn {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 60px;
    height: 60px;
    background-color: #25D366;
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.15);
    z-index: 1000;
    transition: var(--transition-normal);
}

.whatsapp-btn:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 8px 25px rgba(37, 211, 102, 0.4);
    color: white;
}

/* Back Arrow Button */
.back-arrow {
    position: absolute;
    left: 0;
    background-color: transparent;
    border: none;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--color-primary);
    transition: var(--transition-normal);
    z-index: 999;
    padding: 10px;
}

.back-arrow:hover {
    color: var(--color-primary-light);
    transform: translateX(-5px);
    background-color: transparent;
}

/* Service Page Divider */
.service-page-divider {
    width: 80px;
    height: 3px;
    border: none;
    margin: 1rem auto 2.5rem auto;
    border-radius: 2px;
}

/* Project Steps */
.project-steps {
    margin-top: 8rem;
}

.steps-container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: nowrap;
    gap: 0.5rem;
}

.step-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    flex: 1;
    min-width: 100px;
    text-align: center;
}

.step-icon {
    width: 60px;
    height: 60px;
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    color: var(--color-primary);
    margin-bottom: 1rem;
    position: relative;
    z-index: 2;
    transition: var(--transition-normal);
}

.step-item:hover .step-icon {
    background-color: var(--color-secondary);
    transform: scale(1.1);
    border-color: var(--color-primary-light);
}

.step-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--color-text);
    margin: 0;
}

.step-connector {
    flex-grow: 1;
    height: 1px;
    background-color: var(--color-border);
    margin-top: 30px;
    z-index: 1;
}

@media (max-width: 768px) {
    .steps-container {
        flex-direction: column;
        align-items: center;
        gap: 2rem;
    }
    .step-connector {
        display: none;
    }
}

/* Animations */
.animate-fade-up {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeUp 0.8s var(--transition-slow) forwards;
}

.delay-1 { animation-delay: 0.2s; }
.delay-2 { animation-delay: 0.4s; }

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

/* Responsive */
@media (max-width: 768px) {
    .menu-toggle {
        display: flex;
    }

    .nav {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background-color: var(--color-surface);
        padding: 1.5rem;
        box-shadow: 0 10px 20px rgba(0,0,0,0.05);
        clip-path: polygon(0 0, 100% 0, 100% 0, 0 0);
        transition: var(--transition-normal);
    }

    .nav.active {
        clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
    }

    .nav-list {
        flex-direction: column;
        align-items: center;
        gap: 1.5rem;
    }

    .hero-actions {
        flex-direction: column;
    }

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