/* =========================================
   1. Reset & Variables
   ========================================= */
:root {
    /* Colors */
    --color-primary: #1a2c4e; /* Deep Blue */
    --color-primary-dark: #121f3a;
    --color-accent: #7cb048; /* Brand Green */
    --color-accent-hover: #8bc350;
    --color-secondary: #2980b9;
    --color-warning: #e74c3c;
    --color-info: #3498db;
    --color-text-main: #333333;
    --color-text-light: #666666;
    --color-bg-body: #f4f7f6;
    --color-bg-card: #ffffff;
    --color-border: #e0e0e0;

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

    /* Spacing & Layout */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --container-width: 75rem; /* ~1200px */
    --border-radius: 0.5rem;
    --border-radius-lg: 1rem;

    /* Effects */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.08);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
    margin: 0;
    padding: 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;
}

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

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

h1 { font-size: var(--font-size-h1); text-align: center; }
h2 { font-size: var(--font-size-h2); position: relative; padding-bottom: 0.5rem; }

h2::after {
    content: '';
    display: block;
    width: 3.5rem;
    height: 3px;
    background: var(--color-accent);
    margin: 0.5rem auto 0;
    border-radius: 2px;
}

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

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

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

/* Screen Reader Text */
.screen-reader-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* =========================================
   3. Main Content Styling
   ========================================= */
.site-content {
    padding-top: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
}

.content-area {
    background: var(--color-bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-md);
}

/* Separator */
.page-separator {
    height: 1px;
    background: linear-gradient(to right, transparent, var(--color-border), transparent);
    margin: var(--spacing-md) 0;
}

/* Images */
.entry-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.entry-content img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

/* =========================================
   4. Buttons & Interactive Elements
   ========================================= */
.btn-box {
    display: flex;
    justify-content: center;
    margin: var(--spacing-lg) 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 2.5rem;
    font-size: 1.125rem;
    font-weight: 700;
    text-transform: uppercase;
    color: #fff !important; /* Force white text over inline styles */
    border-radius: 3rem;
    letter-spacing: 0.05em;
    transition: all var(--transition-base);
    box-shadow: 0 4px 15px rgba(124, 176, 72, 0.4);
    position: relative;
    overflow: hidden;
    background-image: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0) 100%);
    border: none;
    cursor: pointer;
}

/* Override inline background color for modern gradient look if needed, 
   but respecting the prompt to keep contrast. blending with inline style */
.btn:hover, .btn:focus {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(124, 176, 72, 0.6);
    filter: brightness(1.1);
}

.btn:active {
    transform: translateY(-1px);
    box-shadow: 0 4px 10px rgba(124, 176, 72, 0.4);
}

/* =========================================
   5. Blockquotes & Alerts
   ========================================= */
blockquote {
    margin: var(--spacing-md) 0;
    padding: var(--spacing-md) var(--spacing-lg);
    border-left: 4px solid var(--color-primary);
    background-color: #f8f9fa;
    border-radius: 0 var(--border-radius) var(--border-radius) 0;
    font-style: italic;
    position: relative;
}

/* Special classes from HTML */
blockquote.check {
    border-left-color: var(--color-accent);
    background-color: rgba(124, 176, 72, 0.05);
}

blockquote.check::before {
    content: '✔';
    position: absolute;
    left: -0.8rem;
    top: 1rem;
    background: var(--color-accent);
    color: #fff;
    width: 1.6rem;
    height: 1.6rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
    font-style: normal;
}

blockquote.info {
    border-left-color: var(--color-info);
    background-color: rgba(52, 152, 219, 0.05);
}

blockquote.info::before {
    content: 'i';
    position: absolute;
    left: -0.8rem;
    top: 1rem;
    background: var(--color-info);
    color: #fff;
    width: 1.6rem;
    height: 1.6rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-style: normal;
}

blockquote.warning {
    border-left-color: var(--color-warning);
    background-color: rgba(231, 76, 60, 0.05);
}

blockquote.warning::before {
    content: '!';
    position: absolute;
    left: -0.8rem;
    top: 1rem;
    background: var(--color-warning);
    color: #fff;
    width: 1.6rem;
    height: 1.6rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-style: normal;
}

/* =========================================
   6. Comments Section
   ========================================= */
.comments-area {
    margin-top: var(--spacing-xl);
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-lg);
}

.comments-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--color-primary);
}

.comment-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.comment-list .comment {
    margin-bottom: var(--spacing-md);
}

.comment-box {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    padding: var(--spacing-md);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.comment-box:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
    border-color: rgba(124, 176, 72, 0.3);
}

.comment-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-sm);
    flex-wrap: wrap;
    gap: 0.5rem;
}

.comment-author {
    font-weight: 700;
    color: var(--color-primary);
    font-style: normal;
    font-size: 1.1rem;
}

.comment-time {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.comment-text p:last-child {
    margin-bottom: 0;
}

/* Indentation for replies if they exist */
.comment-list .children {
    padding-left: var(--spacing-md);
    list-style: none;
    border-left: 2px solid var(--color-border);
    margin-top: var(--spacing-sm);
}

/* =========================================
   7. Footer
   ========================================= */
.site-footer {
    background-color: var(--color-primary);
    color: rgba(255, 255, 255, 0.8);
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg) 0;
}

.footer-navigation {
    background-color: var(--color-primary-dark);
    padding: var(--spacing-md) 0;
}

.footer-navigation ul {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.footer-navigation a {
    color: #fff;
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 0.05em;
    padding: 0.5rem;
    position: relative;
}

.footer-navigation a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background-color: var(--color-accent);
    transition: all var(--transition-base);
    transform: translateX(-50%);
}

.footer-navigation a:hover::after {
    width: 100%;
}

.footer-bottom {
    text-align: center;
    font-size: 0.875rem;
    padding-top: var(--spacing-sm);
}

/* =========================================
   8. Scroll Top Button
   ========================================= */
.scrolltop {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 3rem;
    height: 3rem;
    background-color: var(--color-accent);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    opacity: 0.8;
    transition: all var(--transition-base);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
}

.scrolltop::before {
    content: '';
    width: 0.8rem;
    height: 0.8rem;
    border-top: 3px solid #fff;
    border-left: 3px solid #fff;
    transform: rotate(45deg);
    margin-top: 0.2rem;
}

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

/* =========================================
   9. Responsive Design
   ========================================= */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 1.5rem;
        --spacing-md: 1rem;
    }

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

    .btn {
        width: 100%;
        padding: 0.8rem 1.5rem;
    }

    .footer-navigation ul {
        flex-direction: column;
        align-items: center;
        gap: var(--spacing-sm);
    }
    
    blockquote {
        margin-left: 0;
        margin-right: 0;
        padding-right: var(--spacing-sm);
    }
    
    .comment-list .children {
        padding-left: var(--spacing-sm);
    }
}

/* =========================================
   10. Form Elements (Implicit styling)
   ========================================= */
input[type="text"], 
input[type="email"], 
textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius);
    font-family: inherit;
    font-size: 1rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    background-color: #fafafa;
}

input:focus, 
textarea:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(124, 176, 72, 0.2);
    background-color: #fff;
}