:root {
    /* Colors */
    --primary-color: #2C3E50;
    --secondary-color: #3498DB;
    --background-color: #ECF0F1;
    --footer-bg-color: #1C2833;
    --button-color: #28B463;
    --text-color-primary: #2C3E50;
    --text-color-secondary: #5D6D7E;
    --accent-color: #28B463;

    --section-bg-1: #FFFFFF;
    --section-bg-2: #ECF0F1;
    --section-bg-3: #D5DBDB;
    --section-bg-4: #ABEBC6;
    --section-bg-5: #A9CCE3;

    /* Typography */
    --font-family-base: 'Inter', sans-serif;
    --font-size-base: 1rem;
    --line-height-base: 1.7;

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

    /* Border Radius */
    --border-radius-sm: 0.25rem;
    --border-radius-md: 0.5rem;
    --border-radius-lg: 0.75rem;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.12), 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.15), 0 4px 6px rgba(0, 0, 0, 0.10);
    --shadow-glass: 0 8px 32px 0 rgba(31, 38, 135, 0.37);

    /* Transitions */
    --transition-duration: 0.3s;
    --transition-timing-function: ease-in-out;
}

/* 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-primary);
    background-color: var(--background-color);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    color: var(--text-color-primary);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    font-weight: 700;
}

h1 { font-size: 3.2rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 2rem; }
h4 { font-size: 1.6rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1rem; }

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

a {
    color: var(--secondary-color);
    text-decoration: none;
    transition: color var(--transition-duration) var(--transition-timing-function);
}

a:hover {
    color: var(--accent-color);
    text-decoration: underline;
}

ul, ol {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
    color: var(--text-color-secondary);
}

/* Layout & Structure */
.container {
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-md);
    padding-right: var(--spacing-md);
}

section {
    padding: var(--spacing-xl) 0;
    margin-bottom: var(--spacing-lg);
}

.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); }
.section-bg-5 { background-color: var(--section-bg-5); }

/* Header */
.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: var(--section-bg-1);
    padding: var(--spacing-sm) 0;
    box-shadow: none;
    transition: box-shadow var(--transition-duration) var(--transition-timing-function);
}

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

.header .logo {
    font-size: var(--spacing-lg);
    font-weight: 800;
    color: var(--primary-color);
}

.header nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: var(--spacing-lg);
}

.header nav a {
    color: var(--text-color-primary);
    font-weight: 500;
    padding: var(--spacing-xs) 0;
    position: relative;
}

.header nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--accent-color);
    transition: width var(--transition-duration) var(--transition-timing-function);
}

.header nav a:hover::after {
    width: 100%;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    border: none;
    transition: all var(--transition-duration) var(--transition-timing-function);
    text-decoration: none;
    box-shadow: var(--shadow-sm);
}

.btn-primary {
    background-color: var(--button-color);
    color: var(--section-bg-1);
}

.btn-primary:hover {
    background-color: color-mix(in srgb, var(--button-color) 85%, black);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--secondary-color);
    color: var(--section-bg-1);
}

.btn-secondary:hover {
    background-color: color-mix(in srgb, var(--secondary-color) 85%, black);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-outline {
    background-color: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    box-shadow: none;
}

.btn-outline:hover {
    background-color: var(--primary-color);
    color: var(--section-bg-1);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Forms */
input[type="text"],
input[type="email"],
input[type="password"],
textarea {
    width: 100%;
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    border: 1px solid #D5DBDB;
    border-radius: var(--border-radius-sm);
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    color: var(--text-color-primary);
    transition: border-color var(--transition-duration) var(--transition-timing-function), box-shadow var(--transition-duration) var(--transition-timing-function);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--secondary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

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

/* Cards */
.card {
    background-color: var(--section-bg-1);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    transition: transform var(--transition-duration) var(--transition-timing-function), box-shadow var(--transition-duration) var(--transition-timing-function);
}

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

/* Glassmorphism elements */
.glassmorphism {
    background: rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-radius: var(--border-radius-lg);
    border: 1px solid rgba(255, 255, 255, 0.18);
    box-shadow: var(--shadow-glass);
    padding: var(--spacing-lg);
}

/* Footer */
.footer {
    background-color: var(--footer-bg-color);
    color: rgba(255, 255, 255, 0.7);
    padding: var(--spacing-xl) 0;
    text-align: center;
}

.footer a {
    color: var(--secondary-color);
    margin: 0 var(--spacing-xs);
}

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

/* Utility Classes for Tailwind compatibility (if needed for custom components) */
.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.grid-cols-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

@media (max-width: 768px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 2rem; }
    h3 { font-size: 1.75rem; }

    .header nav ul {
        flex-direction: column;
        gap: var(--spacing-sm);
    }

    .grid-cols-2 {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }

    section {
        padding: var(--spacing-lg) 0;
    }
}

/* Keyframe Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in-on-scroll {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.6s var(--transition-timing-function), transform 0.6s var(--transition-timing-function);
}

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


/* 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;
    }
}