:root {
    /* Colors */
    --primary-color: #28B463;
    --secondary-color: #58D68D;
    --background-color: #F0F4F8;
    --footer-bg-color: #1C2833;
    --text-color-dark: #2C3E50;
    --text-color-light: #ECF0F1;
    --accent-color: #28B463; /* Same as primary for subtle emphasis */
    --border-color: rgba(0, 0, 0, 0.1);

    /* Section Backgrounds */
    --section-bg-1: #FFFFFF;
    --section-bg-2: #F8F9FA;
    --section-bg-3: #E8F6F3;
    --section-bg-4: #D4EDDA;

    /* Fonts */
    --font-family-base: 'Inter', sans-serif;
    --font-size-base: 1.125rem; /* 18px */
    --line-height-base: 1.7;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;

    /* Border Radius */
    --border-radius-sm: 0.5rem; /* rounded-lg equivalent */
    --border-radius-md: 0.75rem;

    /* Shadows */
    --shadow-sm: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 10px 15px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 20px 25px rgba(0, 0, 0, 0.15);
}

/* Base Styles */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--text-color-dark);
    background-color: var(--background-color);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-base);
    color: var(--text-color-dark);
    line-height: 1.2;
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    font-weight: 700;
    letter-spacing: -0.02em;
}

h1 {
    font-size: 3.5rem; /* ~56px */
}

h2 {
    font-size: 2.5rem; /* ~40px */
}

h3 {
    font-size: 2rem; /* ~32px */
}

h4 {
    font-size: 1.5rem; /* ~24px */
}

p {
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s ease, border-bottom 0.3s ease;
}

a:hover {
    color: var(--secondary-color);
    border-bottom: 1px solid var(--secondary-color);
}

/* Utility Classes for Layout and Spacing (complementing Tailwind) */
.container {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}

.section-padding {
    padding-top: var(--spacing-xl);
    padding-bottom: var(--spacing-xl);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    border: none;
    outline: none;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
    text-decoration: none;
    color: var(--text-color-light); /* Default white text for buttons */
}

.btn-primary {
    background: var(--primary-color);
    background-image: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-color) 70%, var(--secondary-color) 100%);
    color: white;
}

.btn-primary:hover {
    background-image: linear-gradient(135deg, var(--secondary-color) 0%, var(--primary-color) 100%);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: var(--text-color-light);
    box-shadow: var(--shadow-sm);
}

/* Input Fields */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="number"],
textarea,
select {
    width: 100%;
    padding: var(--spacing-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    color: var(--text-color-dark);
    background-color: var(--section-bg-1);
    transition: all 0.3s ease;
    box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.05); /* Subtle inner shadow */
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="number"]:focus,
textarea:focus,
select:focus {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(40, 180, 99, 0.2); /* Light green focus ring */
    outline: none;
}

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

/* Section Backgrounds */
.section-bg-1 {
    background-color: var(--section-bg-1);
}

.section-bg-2 {
    background-color: var(--section-bg-2);
}

.section-bg-3 {
    background-color: var(--section-bg-3);
}

.section-bg-4 {
    background-color: var(--section-bg-4);
}

/* Card Style */
.card {
    background-color: var(--section-bg-1);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* Footer Specific Styles */
.footer {
    background-color: var(--footer-bg-color);
    color: var(--text-color-light);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.footer a {
    color: var(--secondary-color);
    border-bottom: 1px solid transparent;
}

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

/* Logo Placeholder (if a graphical logo is used, this helps define space) */
.logo {
    display: inline-block;
    width: 50px; /* Example size */
    height: 50px; /* Example size */
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    /* Add SVG or background image for actual logo */
    /* Example for a simple stylized "leaf" or "energy" symbol */
    position: relative;
    overflow: hidden;
}

.logo::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(45deg);
    width: 60%;
    height: 60%;
    background-color: rgba(255, 255, 255, 0.2);
    border-radius: 20%;
}

/* Media Queries for Responsiveness */
@media (max-width: 768px) {
    :root {
        --font-size-base: 1rem; /* Smaller base font on mobile */
        --spacing-md: 1rem;
        --spacing-lg: 1.5rem;
        --spacing-xl: 2.5rem;
    }

    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    h3 {
        font-size: 1.5rem;
    }

    .btn {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.95rem;
    }

    .section-padding {
        padding-top: var(--spacing-lg);
        padding-bottom: var(--spacing-lg);
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.75rem;
    }
}


/* Cookie Banner Additional Styles for Tailwind */
.cookie-banner-hover-effect:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

@media (prefers-reduced-motion: reduce) {
    .cookie-banner-hover-effect:hover {
        transform: none;
    }
}