:root {
    /* Colors */
    --color-primary: #1a2b3c;
    --color-secondary: #00e676;
    --color-background: #f5f7fa;
    --color-footer-bg: #101a24;
    --color-button: #00c853;
    --color-text-dark: #1a2b3c;
    --color-text-light: #ffffff;
    --color-accent: #00e676; /* Using secondary as accent */

    /* Section Backgrounds - from user's section_bg_colors */
    --section-bg-1: #ffffff;
    --section-bg-2: #eef1f6;
    --section-bg-3: #d9e2ee;
    --section-bg-4: #c7d7e8;
    --section-bg-5: #b3cbe3;
    --section-bg-6: #a0bfde;

    /* Typography */
    --font-family-body: 'Plus Jakarta Sans', sans-serif;
    --font-family-heading: 'Poppins', sans-serif;
    --font-size-base: 1rem; /* 16px */

    /* Spacing */
    --spacing-xs: 0.5rem;   /* 8px */
    --spacing-sm: 1rem;    /* 16px */
    --spacing-md: 1.5rem;  /* 24px */
    --spacing-lg: 2.5rem;  /* 40px */
    --spacing-xl: 4rem;    /* 64px */

    /* Border Radius */
    --border-radius-sm: 0.5rem;
    --border-radius-md: 1rem;
    --border-radius-lg: 2rem; /* For capsule-like buttons */

    /* Shadows */
    --shadow-subtle: 0 4px 6px rgba(0, 0, 0, 0.1), 0 1px 3px rgba(0, 0, 0, 0.08); /* Soft shadows */
    --shadow-lift: 0 10px 15px rgba(0, 0, 0, 0.15), 0 4px 6px rgba(0, 0, 0, 0.1); /* For hover effects */

    /* Transitions */
    --transition-speed: 0.3s;
    --transition-ease: ease-in-out;
}

/* Base Styles */
html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family-body);
    font-size: var(--font-size-base);
    line-height: 1.7; /* Generous line-height for readability */
    color: var(--color-text-dark);
    background-color: var(--color-background);
    margin: 0;
    padding: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-family-heading);
    color: var(--color-primary);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    letter-spacing: -0.02em; /* Slightly tighter for headings */
}

h1 {
    font-size: 3.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
}

h2 {
    font-size: 2.5rem;
    font-weight: 600;
}

h3 {
    font-size: 1.8rem;
    font-weight: 600;
}

h4 {
    font-size: 1.5rem;
    font-weight: 500;
}

p {
    margin-bottom: var(--spacing-md);
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-speed) var(--transition-ease);
}

a:hover {
    color: var(--color-accent);
}

/* Layout & Structure */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

section {
    padding: var(--spacing-xl) 0; /* Generous padding for sections */
    position: relative;
    overflow: hidden; /* For subtle background patterns */
    box-sizing: border-box;
}

/* 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);
}

.section-bg-5 {
    background-color: var(--section-bg-5);
}

.section-bg-6 {
    background-color: var(--section-bg-6);
}

/* Header & Navigation */
.header {
    background: linear-gradient(to right, var(--color-primary) 0%, var(--color-primary) 50%, var(--color-secondary) 100%);
    background-size: 200% auto; /* For the subtle gradient shift */
    animation: gradient-shift 10s ease infinite alternate;
    padding: var(--spacing-sm) 0;
    position: sticky; /* Floats */
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: var(--shadow-subtle);
    border-bottom-left-radius: var(--border-radius-md);
    border-bottom-right-radius: var(--border-radius-md);
    transition: background-color var(--transition-speed) var(--transition-ease);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 var(--spacing-md);
}

.logo {
    font-family: var(--font-family-heading);
    font-weight: 700;
    font-size: 1.8rem;
    color: var(--color-text-light);
    text-decoration: none;
    letter-spacing: -0.05em;
    padding: var(--spacing-xs);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-speed) var(--transition-ease);
}

.logo:hover {
    color: var(--color-accent);
    transform: scale(1.02);
}

.nav-links {
    display: flex;
    justify-content: center;
    flex-grow: 1; /* Centered links */
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-links li {
    margin: 0 var(--spacing-sm);
}

.nav-links a {
    color: var(--color-text-light);
    font-weight: 500;
    font-size: 1.1rem;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-speed) var(--transition-ease);
    position: relative;
    overflow: hidden;
    z-index: 1;
}

.nav-links a::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--color-accent);
    transform: scaleX(0);
    transform-origin: bottom right;
    transition: transform var(--transition-speed) var(--transition-ease);
    z-index: -1;
}

.nav-links a:hover::before {
    transform: scaleX(1);
    transform-origin: bottom left;
}

.nav-links a:hover {
    color: var(--color-accent);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius-lg); /* Capsule-like */
    font-family: var(--font-family-body);
    font-size: var(--font-size-base);
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    color: var(--color-text-light);
    background: linear-gradient(to right, var(--color-button), color-mix(in srgb, var(--color-button) 80%, var(--color-text-light) 20%)); /* Light gradient */
    background-size: 200% auto;
    transition: all var(--transition-speed) var(--transition-ease);
    box-shadow: var(--shadow-subtle);
}

.btn:hover {
    background-position: right center; /* Shift gradient on hover */
    transform: translateY(-3px) scale(1.01); /* Lift effect */
    box-shadow: var(--shadow-lift);
    border: 2px solid var(--color-primary); /* Solid primary border */
}

.btn:active {
    transform: translateY(1px); /* Push effect */
    box-shadow: 0 2px 3px rgba(0, 0, 0, 0.1);
}

/* Cards & Elements */
.card {
    background-color: var(--section-bg-1);
    border-radius: var(--border-radius-md);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-subtle);
    transition: transform var(--transition-speed) var(--transition-ease), box-shadow var(--transition-speed) var(--transition-ease);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lift);
}

/* Forms */
input[type="text"],
input[type="email"],
input[type="password"],
textarea {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border: 1px solid #dcdcdc;
    border-radius: var(--border-radius-sm);
    font-family: var(--font-family-body);
    font-size: var(--font-size-base);
    color: var(--color-text-dark);
    transition: border-color var(--transition-speed) var(--transition-ease), box-shadow var(--transition-speed) var(--transition-ease);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(var(--color-accent), 0.2);
}

/* Footer */
.footer {
    background-color: var(--color-footer-bg);
    color: rgba(255, 255, 255, 0.7);
    padding: var(--spacing-xl) 0;
    text-align: center;
    font-size: 0.9rem;
}

.footer a {
    color: rgba(255, 255, 255, 0.9);
}

.footer a:hover {
    color: var(--color-accent);
}

/* Utilities for geometric patterns/subtle gradients (example, needs specific implementation) */
.pattern-geometric::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: radial-gradient(circle at top left, rgba(0,230,118,0.05) 0%, transparent 50%), radial-gradient(circle at bottom right, rgba(26,43,60,0.05) 0%, transparent 50%);
    z-index: 0;
    pointer-events: none;
}

/* Animations */
@keyframes gradient-shift {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}

/* Responsive Design */
@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 1.8rem;
    }

    .header-content {
        flex-direction: column;
        text-align: center;
    }

    .nav-links {
        flex-direction: column;
        margin-top: var(--spacing-sm);
    }

    .nav-links li {
        margin: var(--spacing-xs) 0;
    }

    .btn {
        width: 100%;
        margin-top: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 2rem;
    }

    h2 {
        font-size: 1.5rem;
    }

    section {
        padding: var(--spacing-lg) 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;
    }
}