/**
 * Kernel Landing Page Styles
 * Colori: bianco/grigio chiaro (sfondo), verde (accento green), arancione, grigio scuro (testo)
 */

/* ==========================================================================
   CSS Variables / Design Tokens
   ========================================================================== */
:root {
    /* Colors */
    --color-white: #ffffff;
    --color-bg: #f8f9fa;
    --color-bg-light: #f1f3f5;
    --color-green: #22c55e;
    --color-green-dark: #16a34a;
    --color-green-light: #dcfce7;
    --color-orange: #f97316;
    --color-orange-dark: #ea580c;
    --color-orange-light: #ffedd5;
    --color-text: #1f2937;
    --color-text-light: #6b7280;
    --color-text-muted: #9ca3af;
    --color-border: #e5e7eb;

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 2rem;
    --font-size-4xl: 2.5rem;
    --font-size-5xl: 3.5rem;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
    --radius-full: 9999px;

    /* 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-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
    color: var(--color-green-dark);
}

ul {
    list-style: none;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

input,
textarea,
select {
    font-family: inherit;
    font-size: inherit;
}

/* ==========================================================================
   Layout
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.section {
    padding: var(--spacing-4xl) 0;
}

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

.section-green {
    background: linear-gradient(135deg, var(--color-green) 0%, var(--color-green-dark) 100%);
    color: var(--color-white);
}

.section-cta {
    background: linear-gradient(135deg, var(--color-orange) 0%, var(--color-orange-dark) 100%);
    color: var(--color-white);
    text-align: center;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--spacing-3xl);
}

.section-tag {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background-color: var(--color-green-light);
    color: var(--color-green-dark);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.section-tag.light {
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--color-white);
}

.section-header h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-light);
}

.highlight {
    color: var(--color-green);
}

.highlight-light {
    color: var(--color-orange-light);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    transition: box-shadow var(--transition-base);
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 700;
    font-size: var(--font-size-xl);
    color: var(--color-text);
}

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

.logo-icon {
    display: block;
    height: 40px;
    width: auto;
    object-fit: contain;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-xl);
}

.nav-menu a {
    color: var(--color-text);
    font-weight: 500;
    transition: color var(--transition-fast);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--spacing-sm);
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-green) 0%, var(--color-green-dark) 100%);
    color: var(--color-white);
}

.btn-primary:hover {
    color: var(--color-white);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(34, 197, 94, 0.4);
}

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

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

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

.btn-white:hover {
    color: var(--color-orange-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-base);
}

.btn-full {
    width: 100%;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
    position: relative;
    padding-top: calc(72px + var(--spacing-4xl));
    padding-bottom: var(--spacing-4xl);
    background: transparent;
    min-height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-image {
    position: absolute;
    top: 0;
    width: 100%;
    height: 1080px;
    background-image: url(./bg.jpg);
    background-size: cover;
    /* make the background darker with a filter */
    filter: brightness(0.2);
    z-index: -1;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    background: transparent;
}

.hero-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: linear-gradient(135deg, rgba(22, 163, 74, 0.9) 0%, rgba(34, 197, 94, 0.5) 100%);
    color: var(--color-white);
    font-size: var(--font-size-sm);
    font-weight: 600;
    border-radius: var(--radius-full);
    margin-bottom: var(--spacing-lg);
    border: 1px solid var(--color-green);
}

.hero h1 {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: var(--spacing-lg);
    color: var(--color-white);
}

.hero-subtitle {
    font-size: var(--font-size-xl);
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: var(--spacing-xl);
    max-width: 540px;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-3xl);
}

.hero-stats {
    display: flex;
    gap: var(--spacing-2xl);
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    white-space: nowrap;
}

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 800;
    color: var(--color-green);
    line-height: 1;
}

.stat-suffix {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    color: var(--color-green);
}

.stat-label {
    display: block;
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
    margin-top: var(--spacing-xs);
}

/* Hero Visual */
.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.eco-circle {
    position: relative;
    width: 400px;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.eco-icon {
    width: 180px;
    height: 180px;
    background: linear-gradient(135deg, var(--color-green) 0%, var(--color-green-dark) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    box-shadow: 0 20px 60px rgba(34, 197, 94, 0.3);
    z-index: 2;
}

.eco-icon svg {
    width: 80px;
    height: 80px;
}

.truck-svg {
    width: 120px;
    height: auto;
    filter: brightness(0) invert(1);
}

.eco-orbit {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 2px dashed var(--color-border);
    border-radius: 50%;
    animation: rotate 30s linear infinite;
}

.orbit-item {
    position: absolute;
    width: 50px;
    height: 50px;
    background-color: var(--color-white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg);
    top: 50%;
    left: 50%;
    margin-left: -25px;
    margin-top: -25px;
}

.orbit-item svg {
    width: 24px;
    height: 24px;
}

.orbit-item.sun {
    transform: rotate(135deg) translateY(-200px) rotate(-135deg);
    color: var(--color-orange);
}

.orbit-item.leaf {
    transform: rotate(45deg) translateY(-200px) rotate(-45deg);
    color: var(--color-green);
}

.orbit-item.bolt {
    transform: rotate(270deg) translateY(-200px) rotate(-270deg);
    color: var(--color-green);
}

@keyframes rotate {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* ==========================================================================
   About Section
   ========================================================================== */
.about-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.about-card {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.about-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
}

.about-icon {
    width: 56px;
    height: 56px;
    background: linear-gradient(135deg, var(--color-orange-light) 0%, rgba(249, 115, 22, 0.1) 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-md);
    color: var(--color-orange);
}

.about-icon.green {
    background: linear-gradient(135deg, var(--color-green-light) 0%, rgba(34, 197, 94, 0.1) 100%);
    color: var(--color-green);
}

.about-icon svg {
    width: 28px;
    height: 28px;
}

.about-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.about-card p {
    color: var(--color-text-light);
}

/* ==========================================================================
   Sustainability Section
   ========================================================================== */
.sustainability-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.sustainability-content h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    line-height: 1.2;
}

.sustainability-content > p {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
}

.eco-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.eco-feature {
    display: flex;
    gap: var(--spacing-md);
    align-items: flex-start;
}

.eco-feature-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.eco-feature-icon svg {
    width: 24px;
    height: 24px;
}

.eco-feature-text h4 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.eco-feature-text p {
    opacity: 0.85;
    font-size: var(--font-size-sm);
}

/* Solar Panel Graphic */
.sustainability-visual {
    display: flex;
    justify-content: center;
}

.solar-panel-graphic {
    position: relative;
    width: 300px;
    height: 350px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
    padding-top: var(--spacing-3xl);
}

.panel-row {
    display: flex;
    gap: var(--spacing-sm);
}

.panel {
    width: 70px;
    height: 50px;
    background: linear-gradient(135deg, #1e3a5f 0%, #0d2137 100%);
    border-radius: var(--radius-sm);
    position: relative;
    overflow: hidden;
}

.panel::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background-color: rgba(255, 255, 255, 0.2);
}

.panel::after {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 1px;
    background-color: rgba(255, 255, 255, 0.2);
}

.sun-rays {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
}

.sun-rays span {
    position: absolute;
    width: 3px;
    height: 40px;
    background: linear-gradient(180deg, var(--color-orange) 0%, transparent 100%);
    border-radius: var(--radius-full);
    animation: sunray 2s ease-in-out infinite;
}

.sun-rays span:nth-child(1) {
    left: -20px;
    transform: rotate(-20deg);
    animation-delay: 0s;
}

.sun-rays span:nth-child(2) {
    left: 0;
    animation-delay: 0.3s;
}

.sun-rays span:nth-child(3) {
    left: 20px;
    transform: rotate(20deg);
    animation-delay: 0.6s;
}

@keyframes sunray {
    0%, 100% {
        opacity: 0.5;
        height: 40px;
    }
    50% {
        opacity: 1;
        height: 50px;
    }
}

.energy-flow {
    position: absolute;
    top: 140px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.energy-dot {
    width: 8px;
    height: 8px;
    background-color: var(--color-orange);
    border-radius: 50%;
    animation: energyFlow 1.5s ease-in-out infinite;
}

.energy-dot:nth-child(2) {
    animation-delay: 0.3s;
}

.energy-dot:nth-child(3) {
    animation-delay: 0.6s;
}

@keyframes energyFlow {
    0% {
        transform: translateY(-20px);
        opacity: 0;
    }
    50% {
        opacity: 1;
    }
    100% {
        transform: translateY(100px);
        opacity: 0;
    }
}

.ev-charging {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 60px;
    color: var(--color-white);
}

.ev-truck-svg {
    width: 100%;
    height: auto;
    filter: brightness(0) invert(1);
}

/* ==========================================================================
   Services Section
   ========================================================================== */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-xl);
}

.service-card {
    position: relative;
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.service-card:hover {
    border-color: var(--color-green);
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.service-card.featured {
    border-color: var(--color-green);
    background: linear-gradient(180deg, var(--color-green-light) 0%, var(--color-white) 50%);
}

.service-badge {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--color-green);
    color: var(--color-white);
    font-size: var(--font-size-xs);
    font-weight: 700;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
}

.service-icon {
    width: 64px;
    height: 64px;
    background: linear-gradient(135deg, var(--color-green-light) 0%, rgba(34, 197, 94, 0.1) 100%);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    color: var(--color-green);
}

.service-icon svg {
    width: 32px;
    height: 32px;
}

.service-card h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
}

.service-card > p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-md);
}

.service-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.service-features li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.service-features li::before {
    content: '';
    width: 6px;
    height: 6px;
    background-color: var(--color-green);
    border-radius: 50%;
}

/* ==========================================================================
   CTA Section
   ========================================================================== */
.cta-content {
    max-width: 700px;
    margin: 0 auto;
}

.cta-content h2 {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.cta-content p {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    margin-bottom: var(--spacing-xl);
}

/* ==========================================================================
   Contact Section
   ========================================================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: var(--spacing-3xl);
}

.contact-form {
    background-color: var(--color-white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-md);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group label {
    display: block;
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-bg);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-green);
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.checkbox-group {
    margin-top: var(--spacing-md);
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
}

.checkbox-label input {
    width: auto;
    margin-top: 3px;
}

.checkbox-label a {
    text-decoration: underline;
}

/* Contact Info */
.contact-info {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.info-card {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background-color: var(--color-bg);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
}

.info-card:hover {
    background-color: var(--color-bg-light);
}

.info-card.highlight-card {
    background-color: var(--color-green-light);
}

.info-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-green);
}

.info-icon svg {
    width: 24px;
    height: 24px;
}

.info-text h4 {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.info-text p {
    font-size: var(--font-size-sm);
    color: var(--color-text-light);
    line-height: 1.5;
}

.info-text a {
    color: var(--color-text);
}

.info-text a:hover {
    color: var(--color-green);
}

/* ==========================================================================
   Footer
   ========================================================================== */
.footer {
    background-color: var(--color-text);
    color: var(--color-white);
    padding: var(--spacing-4xl) 0 var(--spacing-xl);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-3xl);
}

.footer-brand .logo {
    margin-bottom: var(--spacing-md);
    color: var(--color-white);
}

.footer-brand .logo:hover {
    color: var(--color-white);
}

.footer-brand .logo-icon {
    height: 35px;
    filter: brightness(0) invert(1);
}

.footer-brand p {
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
    max-width: 280px;
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-links a {
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    transition: background-color var(--transition-fast);
}

.social-links a:hover {
    background-color: var(--color-green);
    color: var(--color-white);
}

.social-links svg {
    width: 20px;
    height: 20px;
}

.footer-links h4 {
    font-size: var(--font-size-base);
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
}

.footer-links ul {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.footer-links a {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: var(--spacing-xl);
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
}

.eco-badge {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: rgba(34, 197, 94, 0.2);
    border-radius: var(--radius-full);
    color: var(--color-green);
    font-size: var(--font-size-sm);
    font-weight: 600;
}

.eco-badge svg {
    width: 16px;
    height: 16px;
}

/* ==========================================================================
   Modal
   ========================================================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-base), visibility var(--transition-base);
}

.modal.active {
    opacity: 1;
    visibility: visible;
}

.modal-content {
    background-color: var(--color-white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-lg);
    text-align: center;
    max-width: 400px;
    width: 90%;
    transform: scale(0.9);
    transition: transform var(--transition-base);
}

.modal.active .modal-content {
    transform: scale(1);
}

.modal-icon {
    width: 72px;
    height: 72px;
    background-color: var(--color-green-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    color: var(--color-green);
}

.modal-icon svg {
    width: 36px;
    height: 36px;
}

.modal-content h3 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
}

.modal-content p {
    color: var(--color-text-light);
    margin-bottom: var(--spacing-lg);
}

/* ==========================================================================
   Animations
   ========================================================================== */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */
@media (max-width: 1024px) {
    .hero .container {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .hero-subtitle {
        margin-left: auto;
        margin-right: auto;
    }

    .hero-cta {
        justify-content: center;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-visual {
        display: none;
    }

    .sustainability-grid {
        grid-template-columns: 1fr;
    }

    .sustainability-visual {
        order: -1;
    }

    .about-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .contact-grid {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-5xl: 2.5rem;
        --font-size-4xl: 2rem;
        --font-size-3xl: 1.5rem;
    }

    .section {
        padding: var(--spacing-3xl) 0;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background-color: var(--color-white);
        flex-direction: column;
        padding: var(--spacing-xl);
        gap: var(--spacing-md);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: var(--spacing-xl);
    }

    .about-grid,
    .services-grid {
        grid-template-columns: 1fr;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand p {
        margin-left: auto;
        margin-right: auto;
    }

    .social-links {
        justify-content: center;
    }

    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }

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

    .hero-cta .btn {
        width: 100%;
    }

    .stat-number {
        font-size: var(--font-size-3xl);
    }
}