/* =========================================
   1. CSS Reset & Base Styles
   ========================================= */
:root {
    /* Colors */
    --color-primary: #1a56be;
    --color-primary-dark: #123d8a;
    --color-accent: #00c853;
    --color-text-main: #1e293b;
    --color-text-light: #64748b;
    --color-bg-body: #f1f5f9;
    --color-bg-surface: #ffffff;
    --color-border: #e2e8f0;
    --color-error: #ef4444;

    /* Typography */
    --font-family-base: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    --line-height-base: 1.6;
    --font-size-base: 1rem;

    /* Spacing & Layout */
    --container-width: 75rem; /* ~1200px */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 2rem;
    --spacing-xl: 4rem;
    --header-height: 4.5rem;

    /* Effects */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-round: 50%;
    --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: 0.2s ease;
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 100%;
}

body {
    font-family: var(--font-family-base);
    background-color: var(--color-bg-body);
    color: var(--color-text-main);
    line-height: var(--line-height-base);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

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

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

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

/* Screen Reader Text */
.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;
}

/* =========================================
   2. Layout & Container
   ========================================= */
.container,
.site-content {
    width: 100%;
    max-width: var(--container-width);
    margin-inline: auto;
    padding-inline: var(--spacing-md);
}

#page {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* =========================================
   3. Header Styling
   ========================================= */
.site-header {
    background-color: var(--color-bg-surface);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--header-height);
    display: flex;
    align-items: center;
    backdrop-filter: blur(8px);
    background-color: rgba(255, 255, 255, 0.95);
}

.site-header-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: var(--container-width);
    margin-inline: auto;
    padding-inline: var(--spacing-md);
}

/* Hamburger (Visual only based on provided HTML) */
.mob-hamburger {
    display: none; /* Often hidden on desktop */
    width: 2rem;
    height: 2rem;
    cursor: pointer;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mob-hamburger span {
    display: block;
    width: 1.5rem;
    height: 2px;
    background-color: var(--color-text-main);
    position: relative;
    transition: background-color var(--transition-fast);
}

.mob-hamburger span::before,
.mob-hamburger span::after {
    content: '';
    position: absolute;
    width: 100%;
    height: 2px;
    background-color: var(--color-text-main);
    left: 0;
    transition: transform var(--transition-fast);
}

.mob-hamburger span::before { top: -6px; }
.mob-hamburger span::after { bottom: -6px; }

/* Search Form */
.mob-search {
    flex-shrink: 0;
}

.search-form {
    display: flex;
    align-items: center;
    position: relative;
    background: var(--color-bg-body);
    border-radius: var(--radius-lg);
    padding: 0.25rem;
    transition: box-shadow var(--transition-fast);
    border: 1px solid transparent;
}

.search-form:focus-within {
    box-shadow: 0 0 0 3px rgba(26, 86, 190, 0.15);
    border-color: var(--color-primary);
    background: var(--color-bg-surface);
}

.search-form__text {
    border: none;
    background: transparent;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    color: var(--color-text-main);
    outline: none;
    width: 12rem;
    transition: width var(--transition-normal);
}

.search-form__submit {
    background-color: var(--color-primary);
    border: none;
    width: 2rem;
    height: 2rem;
    border-radius: var(--radius-round);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--transition-fast), transform var(--transition-fast);
    position: relative;
}

.search-form__submit::before {
    content: '';
    width: 0.8rem;
    height: 0.8rem;
    border: 2px solid #fff;
    border-radius: 50%;
    position: absolute;
    top: 25%;
    left: 25%;
}

.search-form__submit::after {
    content: '';
    width: 2px;
    height: 0.6rem;
    background: #fff;
    position: absolute;
    bottom: 25%;
    right: 30%;
    transform: rotate(-45deg);
}

.search-form__submit:hover {
    background-color: var(--color-primary-dark);
    transform: scale(1.05);
}

/* =========================================
   4. Content Styling
   ========================================= */
.site-content {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    flex: 1;
}

/* Card-like structure for the main article */
article.page, article.post {
    background-color: var(--color-bg-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-lg) var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
    overflow: hidden; /* Contains child margins */
}

/* Entry Title / Hero Area */
.entry-image__title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-bg-body);
}

h1 {
    font-size: clamp(1.75rem, 5vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.02em;
    color: var(--color-text-main);
    line-height: 1.2;
}

/* Typography inside content */
.entry-content {
    font-size: 1.1rem;
}

.entry-content h2 {
    font-size: clamp(1.5rem, 4vw, 2.25rem);
    color: var(--color-primary-dark);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    font-weight: 700;
}

.entry-content p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text-main);
}

.entry-content ul {
    list-style: none;
    padding-left: 0;
    margin-bottom: var(--spacing-lg);
}

.entry-content ul li {
    position: relative;
    padding-left: 1.5rem;
    margin-bottom: 0.5rem;
}

.entry-content ul li::before {
    content: '•';
    color: var(--color-primary);
    font-weight: bold;
    font-size: 1.5em;
    position: absolute;
    left: 0;
    top: -0.2em;
}

/* Blockquotes */
blockquote {
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-md) var(--spacing-lg);
    border-left: 4px solid var(--color-primary);
    background-color: rgba(26, 86, 190, 0.05);
    border-radius: 0 var(--radius-md) var(--radius-md) 0;
    font-style: italic;
}

blockquote.check {
    border-left-color: var(--color-accent);
    background-color: rgba(0, 200, 83, 0.05);
}

blockquote p {
    margin-bottom: 0;
}

/* Images in content */
.entry-content img {
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.entry-content img.aligncenter {
    margin-inline: auto;
    margin-bottom: var(--spacing-lg);
}

/* Hover effect for clickable images/banners */
a > span[itemprop="image"] img:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

/* Tables */
table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    margin-bottom: var(--spacing-lg);
    font-size: 0.95rem;
    overflow: hidden;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

thead th {
    background-color: var(--color-primary);
    color: white;
    font-weight: 600;
    text-align: left;
    padding: var(--spacing-md);
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
}

tbody td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    transition: background-color var(--transition-fast);
}

tbody tr:last-child td {
    border-bottom: none;
}

tbody tr:nth-child(even) {
    background-color: #f8fafc;
}

tbody tr:hover td {
    background-color: rgba(26, 86, 190, 0.05);
}

/* =========================================
   5. Interactive Elements
   ========================================= */

/* Scroll to Top Button */
.scrolltop {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 3rem;
    height: 3rem;
    background-color: var(--color-primary);
    border: none;
    border-radius: var(--radius-round);
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    opacity: 0.8;
    transform: translateY(100px); /* Hidden initially */
    transition: opacity var(--transition-fast), transform var(--transition-normal), background-color var(--transition-fast);
    z-index: 90;
    display: flex;
    align-items: center;
    justify-content: center;
}

.scrolltop::after {
    content: '';
    width: 0.8rem;
    height: 0.8rem;
    border-top: 2px solid white;
    border-left: 2px solid white;
    transform: rotate(45deg);
    margin-top: 0.2rem;
}

.scrolltop.is-visible, 
.scrolltop:hover { /* Fallback if JS adds class, or simple hover */
    transform: translateY(0);
}

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

/* =========================================
   6. Footer Styling
   ========================================= */
.site-footer {
    background-color: #0f172a; /* Dark slate */
    color: #94a3b8;
    padding-block: var(--spacing-lg);
    margin-top: auto;
    font-size: 0.9rem;
    text-align: center;
}

.footer-info {
    max-width: var(--container-width);
    margin-inline: auto;
    padding-inline: var(--spacing-md);
}

/* =========================================
   7. Responsive Design
   ========================================= */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
    }

    .site-header-inner {
        padding-inline: var(--spacing-sm);
    }

    .mob-hamburger {
        display: flex; /* Show hamburger on mobile */
    }

    .search-form__text {
        width: 8rem; /* Smaller input on mobile */
    }

    .search-form__text:focus {
        width: 10rem;
    }

    article.page, article.post {
        padding: var(--spacing-md);
        border-radius: 0; /* Full width look on mobile */
        box-shadow: none;
        background: transparent;
    }

    /* Make tables scrollable horizontally if too wide */
    table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }

    .scrolltop {
        bottom: 1rem;
        right: 1rem;
        width: 2.5rem;
        height: 2.5rem;
    }
}