:root {
    /* Color Palette */
    --color-primary: #1e2f47;
    --color-primary-light: #2c4466;
    --color-accent: #3b82f6;
    --color-accent-hover: #2563eb;
    --color-success: #10b981;
    --color-success-dark: #059669;
    --color-warning: #f59e0b;
    --color-text-main: #1f2937;
    --color-text-muted: #6b7280;
    --color-text-light: #f3f4f6;
    --color-bg-body: #f3f4f6;
    --color-bg-card: #ffffff;
    --color-border: #e5e7eb;

    /* Typography */
    --font-family-base: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-size-base: 1rem;
    --line-height-base: 1.6;
    --font-size-h1: clamp(1.75rem, 4vw, 2.5rem);
    --font-size-h2: clamp(1.5rem, 3vw, 2rem);
    --font-size-h3: clamp(1.25rem, 2.5vw, 1.75rem);

    /* Spacing & Sizes */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --container-width: 75rem;
    --border-radius-sm: 0.375rem;
    --border-radius-md: 0.75rem;
    --border-radius-lg: 1rem;
    --border-radius-pill: 9999px;

    /* Effects */
    --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);
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
}

/* Modern Reset */
*, *::before, *::after {
    box-sizing: border-box;
}

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

body {
    margin: 0;
    font-family: var(--font-family-base);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-text-main);
    background-color: var(--color-bg-body);
    -webkit-font-smoothing: antialiased;
}

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

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

a:hover, a:focus {
    color: var(--color-accent-hover);
}

ul, ol {
    list-style-position: inside;
    padding-left: var(--spacing-sm);
}

/* Layout */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin-left: auto;
    margin-right: auto;
    padding-left: var(--spacing-sm);
    padding-right: var(--spacing-sm);
}

/* Header & Navigation */
.site-header {
    background-color: var(--color-bg-card);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    padding: var(--spacing-sm) 0;
    display: block !important; /* Overriding inline style for demonstration */
}

.site-header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

/* Search Form */
.mob-search {
    flex-grow: 1;
    max-width: 25rem;
}

.search-form {
    display: flex;
    position: relative;
    width: 100%;
}

.search-form__text {
    width: 100%;
    padding: 0.75rem 1rem;
    padding-right: 3rem;
    font-size: 0.95rem;
    color: var(--color-text-main);
    background-color: var(--color-bg-body);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-pill);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.search-form__text:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.2);
}

.search-form__submit {
    position: absolute;
    right: 0.25rem;
    top: 50%;
    transform: translateY(-50%);
    width: 2.25rem;
    height: 2.25rem;
    border: none;
    background: var(--color-accent) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='white'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z'/%3E%3C/svg%3E") no-repeat center center;
    background-size: 1.25rem;
    border-radius: 50%;
    cursor: pointer;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
}

.search-form__submit:hover {
    background-color: var(--color-accent-hover);
    transform: translateY(-50%) scale(1.05);
}

/* Main Content Area */
.site-content {
    padding: var(--spacing-md) 0;
    animation: fadeIn 0.8s ease-out;
}

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

.site-main {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

/* Article Styling */
article {
    background-color: var(--color-bg-card);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-md);
    overflow: hidden;
}

.entry-header {
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-border);
}

.entry-title {
    font-size: var(--font-size-h1);
    color: var(--color-primary);
    margin: 0;
    font-weight: 800;
    letter-spacing: -0.025em;
    line-height: 1.2;
}

.entry-content {
    font-size: 1.0625rem; /* ~17px */
}

.entry-content h2 {
    font-size: var(--font-size-h2);
    color: var(--color-primary-light);
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

.entry-content p {
    margin-bottom: 1.25rem;
}

/* Call to Action Buttons (CWD/CWDA classes) */
.cwd {
    text-align: center;
    margin: var(--spacing-md) 0;
}

.cwda {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
    font-weight: 700;
    text-transform: uppercase;
    color: #ffffff !important;
    background: linear-gradient(135deg, var(--color-success), var(--color-success-dark));
    border-radius: var(--border-radius-md);
    box-shadow: 0 4px 6px -1px rgba(16, 185, 129, 0.4);
    letter-spacing: 0.05em;
    transform: translateY(0);
    transition: all var(--transition-normal);
    position: relative;
    overflow: hidden;
}

.cwda::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.2), transparent);
    transform: skewX(-20deg) translateX(-150%);
    transition: transform 0.5s;
}

.cwda:hover, .cwda:focus {
    transform: translateY(-3px);
    box-shadow: 0 10px 15px -3px rgba(16, 185, 129, 0.5);
    background: linear-gradient(135deg, #12ca8d, #06b37b);
}

.cwda:hover::before {
    transform: skewX(-20deg) translateX(150%);
}

.cwda:active {
    transform: translateY(-1px);
    box-shadow: 0 2px 4px -1px rgba(16, 185, 129, 0.5);
}

/* Blockquotes & Highlights (.check) */
blockquote, .check {
    background-color: #f0f9ff;
    border-left: 5px solid var(--color-accent);
    padding: 1.5rem;
    margin: 2rem 0;
    border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
    font-style: italic;
    color: var(--color-text-main);
    position: relative;
}

.check strong {
    color: var(--color-primary);
}

/* Images within Content */
.entry-content img {
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    margin-top: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.entry-content img:hover {
    transform: scale(1.01);
    box-shadow: var(--shadow-lg);
}

.aligncenter {
    margin-left: auto;
    margin-right: auto;
    text-align: center;
}

/* Footer */
.site-footer {
    background-color: var(--color-primary);
    color: var(--color-text-light);
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-lg);
    text-align: center;
}

.footer-info {
    font-size: 0.875rem;
    opacity: 0.8;
}

/* Scroll to Top Button */
.scrolltop {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 3rem;
    height: 3rem;
    background-color: var(--color-accent);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0.8;
    transition: all var(--transition-normal);
    z-index: 50;
    display: flex;
    align-items: center;
    justify-content: center;
}

.scrolltop::after {
    content: '';
    width: 0.75rem;
    height: 0.75rem;
    border-top: 2px solid white;
    border-left: 2px solid white;
    transform: rotate(45deg);
    margin-top: 0.25rem;
}

.scrolltop:hover {
    opacity: 1;
    background-color: var(--color-accent-hover);
    transform: translateY(-5px);
}

/* Lists Styling */
.entry-content ul {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
}

.entry-content ul li {
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: 0.75rem;
}

.entry-content ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-success);
    font-weight: bold;
}

.entry-content ol {
    counter-reset: item;
    padding: 0;
    margin: 1.5rem 0;
}

.entry-content ol li {
    list-style: none;
    position: relative;
    padding-left: 2rem;
    margin-bottom: 1rem;
}

.entry-content ol li::before {
    content: counter(item);
    counter-increment: item;
    position: absolute;
    left: 0;
    top: 0;
    width: 1.5rem;
    height: 1.5rem;
    background-color: var(--color-primary-light);
    color: white;
    border-radius: 50%;
    text-align: center;
    font-size: 0.8rem;
    line-height: 1.5rem;
    font-weight: bold;
}

/* Responsive Media Queries */
@media (max-width: 768px) {
    :root {
        --spacing-md: 1.5rem;
        --spacing-lg: 2rem;
    }

    .site-header-inner {
        flex-direction: column;
        align-items: stretch;
    }

    .mob-search {
        max-width: 100%;
        margin-top: var(--spacing-sm);
    }

    article {
        padding: var(--spacing-sm);
        border-radius: 0; /* Full width on mobile looks better flat */
        box-shadow: none;
    }

    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .cwda {
        display: block;
        width: 100%;
        text-align: center;
        padding: 1rem;
    }
    
    .scrolltop {
        bottom: 1rem;
        right: 1rem;
        width: 2.5rem;
        height: 2.5rem;
    }
}

/* Accessibility Focus States */
:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* Skip Link */
.skip-link {
    position: absolute;
    top: -9999px;
    left: 0;
    background: var(--color-accent);
    color: white;
    padding: 1rem;
    z-index: 9999;
}

.skip-link:focus {
    top: 0;
}

/* Screen Reader Text Utilities */
.screen-reader-text {
    border: 0;
    clip: rect(1px, 1px, 1px, 1px);
    -webkit-clip-path: inset(50%);
    clip-path: inset(50%);
    height: 1px;
    margin: -1px;
    overflow: hidden;
    padding: 0;
    position: absolute;
    width: 1px;
    word-wrap: normal !important;
}