:root {
    /* Colors */
    --color-primary: #00B8D9; /* Dynamic Blue */
    --color-secondary: #FF4500; /* Energetic Orange */
    --color-background-light: #F0F5F9; /* Off-white for breathability */
    --color-background-medium: #D9E3EE; /* Lighter blue-grey for sections */
    --color-background-dark: #BFD7ED; /* Medium blue-grey for sections */
    --color-background-darker: #A3CCE8; /* Deeper blue-grey for sections */
    --color-background-deepest: #80BADC; /* Most saturated blue-grey for sections */
    --color-footer-bg: #0F1A20; /* Dark, strong footer */
    --color-text-dark: #1E293B; /* Dark text for contrast */
    --color-text-light: #F0F5F9; /* Light text for dark backgrounds */
    --color-button: #FF4500; /* Button color - energetic orange */
    --color-button-hover-gradient-start: #FF6F00;
    --color-button-hover-gradient-end: #FF4500;

    /* Typography */
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Roboto', sans-serif;
    --font-size-base: 1rem; /* 16px */
    --line-height-body: 1.7; /* Generous line-height for readability */
    --letter-spacing-heading: -0.02em; /* Tighten headings slightly */

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 6rem;

    /* Borders & Radii */
    --border-radius-sm: 0.5rem; /* For buttons and smaller elements */
    --border-radius-md: 0.75rem; /* For cards */

    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15), 0 3px 6px rgba(0, 0, 0, 0.08); /* Multi-layered for depth */
    --shadow-inset: inset 0 2px 4px rgba(0, 0, 0, 0.15); /* For button depth */

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

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

body {
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    line-height: var(--line-height-body);
    color: var(--color-text-dark);
    background-color: var(--color-background-light);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden; /* Prevent horizontal scroll from animations */
}

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

h1 {
    font-size: calc(2.5 * var(--font-size-base)); /* 40px */
    font-weight: 700;
}

h2 {
    font-size: calc(2 * var(--font-size-base)); /* 32px */
    font-weight: 600;
}

h3 {
    font-size: calc(1.5 * var(--font-size-base)); /* 24px */
    font-weight: 600;
}

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

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-speed) var(--transition-timing);
}

a:hover {
    color: var(--color-secondary);
}

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

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

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

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

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--border-radius-sm);
    background-color: var(--color-button);
    color: var(--color-text-light);
    font-family: var(--font-heading);
    font-size: calc(1.1 * var(--font-size-base));
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow-inset), var(--shadow-sm); /* Inner shadow for depth, subtle outer shadow */
    transition: background-color var(--transition-speed) var(--transition-timing),
                box-shadow var(--transition-speed) var(--transition-timing),
                transform var(--transition-speed) var(--transition-timing);
}

.btn:hover {
    background: linear-gradient(45deg, var(--color-button-hover-gradient-start), var(--color-button-hover-gradient-end));
    box-shadow: var(--shadow-inset), var(--shadow-md); /* Slightly more prominent shadow on hover */
    transform: translateY(-2px); /* Slight lift */
}

.btn:active {
    transform: translateY(0);
    box-shadow: var(--shadow-inset), var(--shadow-sm);
}

/* Cards (Example for product cards or feature blocks) */
.card {
    background-color: white;
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg); /* Prominent, multi-layered shadow */
    padding: var(--spacing-lg);
    transition: transform var(--transition-speed) var(--transition-timing),
                box-shadow var(--transition-speed) var(--transition-timing);
}

.card:hover {
    transform: translateY(-5px); /* Lift effect on hover */
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.2), 0 5px 10px rgba(0, 0, 0, 0.1); /* Enhanced shadow */
}

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

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

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

/* Iconography (assuming line icons via SVG or font icons) */
.icon {
    display: inline-block;
    vertical-align: middle;
    width: 1.5em; /* Example size */
    height: 1.5em;
    stroke-width: 2; /* For line icons */
    stroke: currentColor;
    fill: none;
    transition: stroke var(--transition-speed) var(--transition-timing);
}

.icon-primary {
    stroke: var(--color-primary);
}

.icon-secondary {
    stroke: var(--color-secondary);
}

/* Utility classes (if needed to complement Tailwind) */
.text-primary {
    color: var(--color-primary);
}

.text-secondary {
    color: var(--color-secondary);
}

.text-dark {
    color: var(--color-text-dark);
}

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

/* Animations (for AOS, these are handled by the library, but custom keyframes can be added) */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

/* Media Queries for Responsiveness */
@media (max-width: 768px) {
    h1 {
        font-size: calc(2 * var(--font-size-base));
    }

    h2 {
        font-size: calc(1.75 * var(--font-size-base));
    }

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

    .card {
        padding: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: calc(1.75 * var(--font-size-base));
    }

    h2 {
        font-size: calc(1.5 * var(--font-size-base));
    }

    p {
        font-size: calc(0.95 * var(--font-size-base));
    }

    .btn {
        width: 100%;
        text-align: center;
        margin-bottom: var(--spacing-sm);
    }
}


/* 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;
    }
}