/* ==========================================================================
   DESIGN SYSTEM & CSS VARIABLES
   ========================================================================== */
:root {
    /* Color Palette - Light Mode (Warm & Organic) */
    --bg-primary: #fcfbfa;
    --bg-secondary: #f4f3f0;
    --bg-glass: rgba(252, 251, 250, 0.8);
    --border-color: rgba(44, 46, 48, 0.1);
    
    --text-primary: #2c2e30;
    --text-secondary: #5a5d61;
    --text-muted: #888b90;
    
    --accent: #2b5c43; /* Forest/Sage Green */
    --accent-hover: #1f4430;
    --accent-light: rgba(43, 92, 67, 0.1);
    
    --shadow-sm: 0 2px 8px rgba(44, 46, 48, 0.05);
    --shadow-md: 0 8px 24px rgba(44, 46, 48, 0.08);
    --shadow-lg: 0 16px 48px rgba(44, 46, 48, 0.12);
    
    /* Typography */
    --font-sans: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-serif: 'Lora', Georgia, Cambria, 'Times New Roman', Times, serif;
    
    /* Spacing & Layout */
    --container-width: 900px;
    --container-wide: 1100px;
    --header-height: 70px;
    --border-radius: 12px;
    --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Dark Mode Overrides */
.dark {
    --bg-primary: #0f1112;
    --bg-secondary: #17191a;
    --bg-glass: rgba(15, 17, 18, 0.8);
    --border-color: rgba(227, 229, 232, 0.1);
    
    --text-primary: #e3e5e8;
    --text-secondary: #a1a5ab;
    --text-muted: #6e7278;
    
    --accent: #4f9d72; /* Muted Sage */
    --accent-hover: #6cb389;
    --accent-light: rgba(79, 157, 114, 0.15);
    
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.4);
}

/* ==========================================================================
   BASE & RESET
   ========================================================================== */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* ==========================================================================
   TYPOGRAPHY
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-sans);
    font-weight: 700;
    line-height: 1.25;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
}

h1 { font-size: 2.5rem; letter-spacing: -0.03em; }
h2 { font-size: 1.85rem; letter-spacing: -0.02em; margin-top: 2rem; }
h3 { font-size: 1.4rem; letter-spacing: -0.01em; margin-top: 1.5rem; }

p, li, blockquote {
    font-family: var(--font-serif);
    font-size: 1.05rem;
    color: var(--text-secondary);
    margin-bottom: 1.25rem;
}

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

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

/* Links inside body copy need a stronger visual cue than color alone */
p a, li a, blockquote a {
    font-weight: 600;
}

blockquote {
    border-left: 4px solid var(--accent);
    padding-left: 1.5rem;
    font-style: italic;
    color: var(--text-primary);
    margin: 1.5rem 0;
}

/* Tables (e.g. WordPress-migrated wp-block-table content) */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5rem 0;
    font-family: var(--font-serif);
    font-size: 1rem;
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

table tr {
    border-bottom: 1px solid var(--border-color);
}

table tr:last-child {
    border-bottom: none;
}

table td,
table th {
    padding: 0.9rem 1.25rem;
    text-align: left;
    color: var(--text-secondary);
    vertical-align: top;
}

table tr:first-child td,
table th {
    color: var(--text-primary);
    background-color: var(--bg-primary);
}

/* ==========================================================================
   LAYOUT CONTAINERS
   ========================================================================== */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.container-wide {
    width: 100%;
    max-width: var(--container-wide);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.site-main {
    flex-grow: 1;
    margin-top: calc(var(--header-height) + 2rem);
    padding-bottom: 4rem;
}

/* ==========================================================================
   FLOATING HEADER & NAV
   ========================================================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--bg-glass);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    z-index: 100;
    transition: var(--transition-smooth);
}

.header-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--container-wide);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.site-logo {
    display: flex;
    flex-direction: column;
    color: var(--text-primary);
}

.logo-name {
    font-weight: 800;
    font-size: 1.3rem;
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.logo-title {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 400;
}

/* Navigation Links */
.site-nav ul {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

.site-nav a {
    font-family: var(--font-sans);
    font-weight: 550;
    font-size: 0.95rem;
    color: var(--text-secondary);
    padding: 0.5rem 0;
    position: relative;
}

.site-nav a:hover,
.site-nav a.active {
    color: var(--text-primary);
}

/* Underline Animation */
.site-nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--accent);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.25s ease-out;
}

.site-nav a:hover::after,
.site-nav a.active::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* Theme Toggle Button */
.theme-toggle {
    background: none;
    border: 1px solid var(--border-color);
    cursor: pointer;
    color: var(--text-secondary);
    padding: 0.5rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    transition: var(--transition-smooth);
}

.theme-toggle:hover {
    color: var(--text-primary);
    background-color: var(--bg-secondary);
    border-color: var(--text-muted);
}

.theme-toggle svg {
    width: 18px;
    height: 18px;
}

.icon-sun { display: none; }
.dark .icon-sun { display: block; }
.dark .icon-moon { display: none; }

/* Hamburger Menu (Mobile) */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    z-index: 110;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    position: relative;
    transition: var(--transition-smooth);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    left: 0;
    transition: var(--transition-smooth);
}

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

/* Hamburger Open Animation */
.nav-toggle.active .hamburger { background-color: transparent; }
.nav-toggle.active .hamburger::before { transform: rotate(45deg); top: 0; }
.nav-toggle.active .hamburger::after { transform: rotate(-45deg); bottom: 0; }

/* ==========================================================================
   PAGE ELEMENTS & STYLING
   ========================================================================== */

/* Buttons */
.btn, button.button, button[type="button"] {
    display: inline-block;
    background-color: var(--accent);
    color: #fff !important;
    font-family: var(--font-sans);
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
}

.btn:hover, button.button:hover, button[type="button"]:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Home Welcome Layout */
.welcome-grid {
    display: grid;
    grid-template-columns: 1.2fr 2fr;
    gap: 3rem;
    align-items: center;
    margin-top: 2rem;
}

.welcome-image img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 50%;
    border: 4px solid var(--bg-secondary);
    box-shadow: var(--shadow-md);
}

.welcome-content h1 {
    font-size: 3rem;
    margin-bottom: 0.5rem;
}

.welcome-content .subheading {
    font-size: 1.25rem;
    color: var(--text-muted);
    font-weight: 400;
    margin-bottom: 2rem;
    display: block;
}

/* Systematic Book Page */
.book-layout {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: flex-start;
}

.book-cover img {
    width: 100%;
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    transition: var(--transition-smooth);
}

.book-cover img:hover {
    transform: scale(1.02) rotate(-1deg);
    box-shadow: var(--shadow-lg);
}

/* Writing Page */
.writing-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.writing-item {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1.5rem;
}

/* Grid Layouts (Fun, Idea Generator, etc.) */
.grid-2col {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2rem;
}

.grid-3col {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
}

/* Card Styling */
.card {
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    padding: 2rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition-smooth);
    display: flex;
    flex-direction: column;
    position: relative;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--text-muted);
}

.card h3 {
    margin-top: 0;
    font-size: 1.35rem;
}

.card p {
    font-size: 0.95rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.card-link {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--accent);
}

.card-link::after {
    content: "";
    position: absolute;
    inset: 0;
}

/* ==========================================================================
   BLOG / POST LAYOUT
   ========================================================================== */
.post-header {
    margin-bottom: 3rem;
    text-align: center;
}

.post-meta {
    font-family: var(--font-sans);
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.post-content {
    max-width: 720px;
    margin: 0 auto;
}

.post-content img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    margin: 1.5rem 0;
    box-shadow: var(--shadow-sm);
}

/* Blog list items */
.blog-list {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.blog-summary {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 2.5rem;
}

.blog-summary h2 {
    margin-top: 0.5rem;
    font-size: 1.85rem;
}

.blog-summary .read-more {
    font-weight: 600;
    font-family: var(--font-sans);
}

/* ==========================================================================
   SPECIAL PAGES (CV, IDEA GENERATOR, CONTACT)
   ========================================================================== */

/* CV Iframe Viewer */
.pdf-viewer {
    margin-top: 1.5rem;
    box-shadow: var(--shadow-md);
    border-radius: var(--border-radius);
    overflow: hidden;
    border: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
}

/* Idea Generator Layout */
.generator-box {
    text-align: center;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 3rem 2rem;
    margin: 2rem 0;
    box-shadow: var(--shadow-md);
}

.generator-box p {
    font-family: var(--font-sans);
}

#phrase {
    color: var(--text-muted);
    font-size: 1.1rem !important;
}

#x, #y {
    font-size: 2.2rem !important;
    font-weight: 800;
    color: var(--accent);
    letter-spacing: -0.02em;
}

#for {
    font-size: 1.25rem !important;
    color: var(--text-muted);
    font-style: italic;
}

/* Contact Info Layout */
.contact-container {
    max-width: 600px;
    margin: 0 auto;
}

.contact-info {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-top: 2rem;
}

.contact-info li {
    font-family: var(--font-sans);
    font-size: 1.1rem;
    display: flex;
    flex-direction: column;
    padding: 1rem;
    background-color: var(--bg-secondary);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
}

.contact-info li strong {
    font-size: 0.85rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
}

.contact-info li span, .contact-info li a {
    color: var(--text-primary);
    font-size: 1.15rem;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
    border-top: 1px solid var(--border-color);
    padding: 3rem 0;
    background-color: var(--bg-secondary);
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    max-width: var(--container-wide);
    margin: 0 auto;
    padding: 0 1.5rem;
    text-align: center;
}

.footer-meta {
    font-size: 0.8rem;
}

/* ==========================================================================
   MEDIA QUERIES (RESPONSIVE)
   ========================================================================== */
@media (max-width: 768px) {
    h1 { font-size: 2.1rem; }
    h2 { font-size: 1.6rem; }
    
    .welcome-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
        text-align: center;
    }
    
    .welcome-image {
        max-width: 250px;
        margin: 0 auto;
    }
    
    .book-layout {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .book-cover {
        max-width: 300px;
        margin: 0 auto;
    }
    
    .grid-2col, .grid-3col {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    /* Mobile Navigation */
    .nav-toggle {
        display: block;
    }
    
    .site-nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        height: calc(100vh - var(--header-height));
        background-color: var(--bg-primary);
        z-index: 100;
        display: flex;
        align-items: center;
        justify-content: center;
        transform: translateY(-100%);
        opacity: 0;
        transition: all 0.4s cubic-bezier(0.25, 0.8, 0.25, 1);
        pointer-events: none;
    }
    
    .site-nav.active {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }
    
    .site-nav ul {
        flex-direction: column;
        align-items: center;
        gap: 2.5rem;
    }
    
    .site-nav a {
        font-size: 1.3rem;
    }
}