/* Kenneth Reitz - Custom Typography & Design System */
/* Built from scratch with love and attention to detail */

/* ============================================
   DYNAMIC COLOR SYSTEM
   ============================================ */

:root {
    /* Base color schemes - CSS will randomly pick one */
    --hue: 220; /* This gets overridden by JavaScript */
    
    /* Dynamic palette based on hue */
    --color-primary: hsl(var(--hue), 65%, 25%);
    --color-primary-light: hsl(var(--hue), 55%, 35%);
    --color-primary-dark: hsl(var(--hue), 75%, 15%);
    
    --color-accent: hsl(calc(var(--hue) + 180), 70%, 45%);
    --color-accent-light: hsl(calc(var(--hue) + 180), 65%, 55%);
    --color-accent-dark: hsl(calc(var(--hue) + 180), 75%, 35%);
    
    --color-secondary: hsl(calc(var(--hue) + 120), 55%, 40%);
    --color-secondary-light: hsl(calc(var(--hue) + 120), 50%, 50%);
    --color-secondary-dark: hsl(calc(var(--hue) + 120), 65%, 30%);
    
    /* Text colors */
    --color-text: hsl(var(--hue), 25%, 20%);
    --color-text-light: hsl(var(--hue), 15%, 35%);
    --color-text-lighter: hsl(var(--hue), 10%, 50%);
    --color-text-subtle: hsl(var(--hue), 5%, 65%);
    
    /* Backgrounds with subtle hue tint */
    --color-bg: hsl(var(--hue), 5%, 99%);
    --color-bg-alt: hsl(var(--hue), 15%, 97%);
    --color-bg-accent: hsl(var(--hue), 20%, 95%);
    
    /* Borders */
    --color-border: hsl(var(--hue), 15%, 90%);
    --color-border-light: hsl(var(--hue), 10%, 94%);
    --color-border-accent: hsl(var(--hue), 25%, 88%);
}

/* Color scheme variations */
.scheme-ocean { --hue: 200; }
.scheme-forest { --hue: 120; }
.scheme-sunset { --hue: 25; }
.scheme-lavender { --hue: 280; }
.scheme-rose { --hue: 340; }
.scheme-sage { --hue: 90; }
.scheme-amber { --hue: 45; }
.scheme-steel { --hue: 210; }
.scheme-wine { --hue: 320; }
.scheme-moss { --hue: 80; }

/* ============================================
   FONTS & BASE TYPOGRAPHY
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:ital,opsz,wght@0,14..32,100..900;1,14..32,100..900&family=Crimson+Pro:ital,wght@0,200..900;1,200..900&family=Fira+Code:wght@300..700&display=swap');

/* CSS Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 20px;
    scroll-behavior: smooth;
    text-size-adjust: 100%;
    -webkit-text-size-adjust: 100%;
    -ms-text-size-adjust: 100%;
}

body {
    font-family: 'Crimson Pro', 'Times New Roman', 'Noto Serif', 'Droid Serif', Georgia, serif;
    font-weight: 400;
    line-height: 1.75;
    color: var(--color-text);
    background: var(--color-bg);
    
    /* Advanced typography features */
    text-rendering: optimizeLegibility;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-feature-settings: "kern" 1, "liga" 1, "calt" 1, "onum" 1, "pnum" 1;
    font-variant-ligatures: common-ligatures contextual;
    font-variant-numeric: oldstyle-nums proportional-nums;
    
    /* Hyphenation for better text flow */
    -webkit-hyphens: auto;
    -moz-hyphens: auto;
    -ms-hyphens: auto;
    hyphens: auto;
    hyphenate-limit-chars: 6 3 2;
    hyphenate-limit-lines: 2;
    
    /* Center container with left-aligned content */
    max-width: 75rem;
    margin: 0 auto;
    padding: 0 2.5rem;
}

/* ============================================
   TYPOGRAPHY HIERARCHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    font-weight: 600;
    line-height: 1.15;
    color: var(--color-primary-dark);
    margin: 2rem 0 1rem;
    letter-spacing: -0.025em;
    text-wrap: balance;
    
    /* Advanced OpenType features */
    font-feature-settings: "kern" 1, "liga" 1, "calt" 1, "ss01" 1, "ss02" 1;
    font-variant-ligatures: common-ligatures discretionary-ligatures;
    
    /* Optical sizing for variable fonts */
    font-optical-sizing: auto;
}

h1 {
    font-family: 'Crimson Pro', 'Times New Roman', 'Noto Serif', Georgia, serif;
    font-size: clamp(2.5rem, 5.5vw, 4.5rem);
    font-weight: 500;
    margin-top: 0;
    margin-bottom: 1.25rem;
    margin-left: 3rem;
    color: #0a0a0a;
    font-style: italic;
    line-height: 1.1;
    letter-spacing: -0.02em;
    text-shadow: 0 1px 3px rgba(0,0,0,0.08);
    
    /* Elegant spacing and kerning */
    font-feature-settings: "kern" 1, "liga" 1, "calt" 1, "swsh" 1, "clig" 1;
    font-variant-ligatures: common-ligatures contextual discretionary-ligatures;
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 650;
    margin-top: 3.5rem;
    margin-bottom: 1.5rem;
    margin-left: 1.5rem;
    position: relative;
    color: #111;
    letter-spacing: -0.02em;
}

h2::after {
    content: '';
    display: block;
    width: 3rem;
    height: 1px;
    background: linear-gradient(90deg, var(--color-accent), var(--color-secondary));
    margin: 1.25rem 0 0 0;
    border-radius: 1px;
    opacity: 0.7;
}

h3 {
    font-size: clamp(1.375rem, 3vw, 1.875rem);
    font-weight: 550;
    margin-top: 2.5rem;
    margin-left: 1rem;
    color: #222;
    letter-spacing: -0.015em;
}

h4 {
    font-size: clamp(1.25rem, 2.5vw, 1.5rem);
    font-weight: 550;
    margin-top: 2rem;
    margin-left: 0.5rem;
    color: #333;
    letter-spacing: -0.01em;
}

h5 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-top: 1.75rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: #555;
    font-feature-settings: "kern" 1, "smcp" 1;
}

h6 {
    font-size: 1rem;
    font-weight: 600;
    margin-top: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: #666;
    font-feature-settings: "kern" 1, "smcp" 1;
}

/* ============================================
   PARAGRAPHS & TEXT
   ============================================ */

p {
    margin: 1.5rem 0;
    max-width: 45rem;
    font-size: 1.125rem;
    line-height: 1.8;
    color: #2a2a2a;
    text-align: justify;
    text-justify: inter-character;
    
    /* Advanced paragraph styling */
    hanging-punctuation: first last;
    font-feature-settings: "kern" 1, "liga" 1, "calt" 1, "onum" 1, "pnum" 1;
}

p:first-of-type {
    text-indent: 0;
}

p + p {
    text-indent: 1.5em;
    margin-top: 0;
}

p:first-child {
    margin-top: 0;
}

p:last-child {
    margin-bottom: 0;
}

/* Lead paragraphs */
.lead {
    font-size: 1.5rem;
    font-weight: 350;
    line-height: 1.65;
    color: #1a1a1a;
    margin: 2rem 0;
    max-width: 50rem;
    text-indent: 0 !important;
    
    /* Distinctive styling for lead text */
    font-feature-settings: "kern" 1, "liga" 1, "calt" 1, "swsh" 1;
    letter-spacing: 0.005em;
}

/* Large text */
.large {
    font-size: 1.25rem;
    line-height: 1.8;
}

/* Small text */
.small {
    font-size: 0.95rem;
    color: #666;
}

/* Text emphasis */
strong, b {
    font-weight: 650;
    color: #0f0f0f;
    font-feature-settings: "kern" 1, "liga" 1;
}

em, i {
    font-style: italic;
    color: #1a1a1a;
    font-feature-settings: "kern" 1, "liga" 1, "calt" 1, "swsh" 1;
}

/* Smart quotes and punctuation */
q::before { content: """; }
q::after { content: """; }
q q::before { content: "'"; }
q q::after { content: "'"; }

/* Subtle text */
.muted {
    color: #777;
}

.subtitle {
    font-style: italic;
    color: #666;
    font-size: 1.1rem;
    margin: 0.5rem 0 1.25rem;
    max-width: 40rem;
}

/* ============================================
   LINKS
   ============================================ */

a {
    color: #667eea;
    text-decoration: none;
    border-bottom: 1px solid rgba(102, 126, 234, 0.3);
    transition: all 0.2s ease;
    padding-bottom: 2px;
}

a:hover {
    color: #5a67d8;
    border-bottom-color: #5a67d8;
    background: rgba(102, 126, 234, 0.05);
    padding-left: 4px;
    padding-right: 4px;
    border-radius: 3px;
}

a:active {
    transform: translateY(1px);
}

/* ============================================
   LISTS
   ============================================ */

ul, ol {
    margin: 1.25rem 0;
    max-width: 40rem;
    padding-left: 2rem;
}

li {
    margin: 0.5rem 0;
    line-height: 1.7;
    color: #444;
}

ul {
    list-style: none;
    padding-left: 0;
}

ul li {
    position: relative;
    padding-left: 1.5rem;
}

ul li::before {
    content: '•';
    color: #667eea;
    font-size: 1.2em;
    position: absolute;
    left: 0;
    top: 0;
}

/* Nested lists */
ul ul {
    margin: 0.5rem 0;
    max-width: none;
}

ul ul li::before {
    content: '◦';
    color: #999;
}

ul ul ul li::before {
    content: '▫';
    color: #ccc;
}

/* Ordered lists */
ol {
    padding-left: 2rem;
    list-style: decimal;
}

ol li {
    padding-left: 0.5rem;
}

/* ============================================
   NAVIGATION
   ============================================ */

nav {
    margin: 1.5rem auto 2.5rem;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border-radius: 2rem;
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    border: 1px solid #e8e8e8;
    display: inline-block;
    text-align: center;
}

nav a {
    margin: 0 0.75rem;
    padding: 0.6rem 1.25rem;
    color: #555;
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    font-weight: 500;
    border: none;
    border-radius: 1.5rem;
    transition: all 0.3s ease;
    display: inline-block;
    background: none;
}

nav a:hover {
    color: #fff;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(102, 126, 234, 0.4);
    padding-left: 1.25rem;
    padding-right: 1.25rem;
}

nav a.current {
    color: #fff;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    box-shadow: 0 2px 10px rgba(102, 126, 234, 0.3);
}

/* ============================================
   QUOTES & BLOCKQUOTES
   ============================================ */

blockquote {
    margin: 2.5rem 0 2.5rem 2rem;
    padding: 1.75rem 2rem;
    max-width: 48rem;
    background: linear-gradient(135deg, #fafbfc 0%, #ffffff 100%);
    border-left: 3px solid #667eea;
    border-radius: 0 6px 6px 0;
    font-size: 1.3rem;
    font-style: italic;
    font-weight: 350;
    color: #1a1a1a;
    line-height: 1.75;
    box-shadow: 0 2px 12px rgba(0,0,0,0.06);
    
    /* Elegant quote styling */
    font-feature-settings: "kern" 1, "liga" 1, "calt" 1, "swsh" 1, "clig" 1;
    text-indent: 0 !important;
    position: relative;
}

blockquote p {
    margin: 0;
    max-width: none;
}

blockquote cite {
    display: block;
    margin-top: 1rem;
    font-size: 0.95rem;
    font-style: normal;
    color: #666;
    font-family: 'Inter', sans-serif;
}

blockquote cite::before {
    content: '— ';
}

/* ============================================
   CODE & PREFORMATTED TEXT
   ============================================ */

code {
    font-family: 'Fira Code', 'SF Mono', 'Monaco', 'Menlo', 'Consolas', monospace;
    font-size: 0.875em;
    font-weight: 400;
    background: #f8f9fa;
    color: #d73a49;
    padding: 0.125em 0.375em;
    border-radius: 3px;
    border: 1px solid #e1e4e8;
    font-feature-settings: "calt" 1, "liga" 1, "ss01" 1, "ss02" 1, "ss03" 1, "ss04" 1;
    font-variant-ligatures: common-ligatures contextual;
    letter-spacing: -0.01em;
}

pre {
    margin: 2rem 0;
    padding: 1.5rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border: 1px solid #e1e4e8;
    border-radius: 6px;
    overflow-x: auto;
    max-width: 55rem;
    box-shadow: 0 2px 8px rgba(0,0,0,0.04), 0 1px 2px rgba(0,0,0,0.06);
    font-size: 0.9rem;
    line-height: 1.6;
}

pre code {
    background: none;
    border: none;
    padding: 0;
    color: #24292e;
    font-size: inherit;
    line-height: inherit;
    font-feature-settings: "calt" 1, "liga" 1;
}

/* ============================================
   IMAGES & MEDIA
   ============================================ */

img {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.1);
}

figure {
    margin: 1.75rem 0;
    text-align: center;
    max-width: 55rem;
}

figure img {
    margin-bottom: 1rem;
}

figcaption {
    font-size: 0.95rem;
    color: #666;
    font-style: italic;
    margin-top: 1rem;
    max-width: 40rem;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   TABLES
   ============================================ */

table {
    width: 100%;
    max-width: 50rem;
    margin: 1.25rem 0;
    border-collapse: collapse;
    font-family: 'Inter', sans-serif;
    font-size: 0.95rem;
    box-shadow: 0 2px 15px rgba(0,0,0,0.08);
    border-radius: 8px;
    overflow: hidden;
}

th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid #e9ecef;
}

th {
    background: #f8f9fa;
    font-weight: 600;
    color: #495057;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

tr:hover {
    background: #f8f9fa;
}

/* ============================================
   SECTIONS & LAYOUT
   ============================================ */

section {
    margin: 2.5rem 0;
}

/* Keep homepage centered but content pages left-aligned */
body.homepage article {
    text-align: center;
}

body.homepage main {
    text-align: center;
}

header {
    text-align: center;
    margin-bottom: 1.75rem;
}

footer {
    margin-top: 6rem;
    padding: 3rem 0;
    border-top: 1px solid #e1e4e8;
    text-align: center;
    background: linear-gradient(135deg, #fafbfc 0%, #ffffff 100%);
}

.footer-content {
    max-width: 45rem;
    margin: 0 auto;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.footer-links a {
    color: #555;
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all 0.2s ease;
    font-family: 'Inter', sans-serif;
}

.footer-links a:hover {
    color: #333;
    background: rgba(102, 126, 234, 0.08);
    transform: translateY(-1px);
}

.footer-note {
    color: #777;
    font-size: 0.9rem;
    line-height: 1.6;
}

.footer-note a {
    color: #667eea;
    text-decoration: none;
    border-bottom: 1px solid rgba(102, 126, 234, 0.3);
}

.footer-note a:hover {
    color: #5a67d8;
    border-bottom-color: #5a67d8;
}

/* ============================================
   UTILITIES
   ============================================ */

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 1rem; }
.mb-2 { margin-bottom: 2rem; }
.mb-3 { margin-bottom: 3rem; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 1rem; }
.mt-2 { margin-top: 2rem; }
.mt-3 { margin-top: 3rem; }

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 768px) {
    html {
        font-size: 16px;
    }
    
    body {
        padding: 0 1rem;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 1.875rem;
    }
    
    h3 {
        font-size: 1.5rem;
    }
    
    p {
        font-size: 1.0625rem;
    }
    
    nav {
        padding: 0.75rem 1rem;
        margin: 1.5rem auto 3rem;
    }
    
    nav a {
        display: block;
        margin: 0.5rem 0;
        text-align: center;
    }
    
    blockquote {
        margin: 2rem auto;
        padding: 1.5rem;
        font-size: 1.125rem;
    }
    
    ul, ol {
        max-width: none;
    }
}

@media (max-width: 480px) {
    body {
        padding: 0 0.75rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    nav {
        border-radius: 1rem;
    }
    
    nav a {
        padding: 0.75rem 1rem;
        border-radius: 1rem;
    }
}

/* ============================================
   ADVANCED TYPOGRAPHY FEATURES
   ============================================ */

/* Drop caps for special content */
.drop-cap::first-letter {
    float: left;
    font-family: 'Crimson Pro', serif;
    font-size: 4em;
    line-height: 0.8;
    margin: 0.1em 0.1em 0 0;
    font-weight: 600;
    color: #667eea;
    font-feature-settings: "kern" 1, "liga" 1, "swsh" 1;
}

/* Stylistic alternates for headings */
.stylistic-heading {
    font-feature-settings: "kern" 1, "liga" 1, "calt" 1, "ss01" 1, "ss02" 1, "ss03" 1, "swsh" 1;
}

/* Perfect widow and orphan control */
p, li, blockquote {
    orphans: 3;
    widows: 3;
}

/* Micro-typography adjustments */
.fine-print {
    font-size: 0.825rem;
    line-height: 1.6;
    color: #666;
    font-feature-settings: "kern" 1, "liga" 1, "tnum" 1;
    letter-spacing: 0.01em;
}

/* Professional table number styling */
.tabular-nums {
    font-feature-settings: "kern" 1, "tnum" 1;
    font-variant-numeric: tabular-nums;
}

/* ============================================
   ACCESSIBILITY & SPECIAL FEATURES
   ============================================ */

/* Focus styles */
*:focus {
    outline: 2px solid #667eea;
    outline-offset: 3px;
    border-radius: 3px;
    box-shadow: 0 0 0 4px rgba(102, 126, 234, 0.1);
}

/* Selection styles */
::selection {
    background-color: rgba(102, 126, 234, 0.15);
    color: #0f0f0f;
    text-shadow: none;
}

::-moz-selection {
    background-color: rgba(102, 126, 234, 0.15);
    color: #0f0f0f;
    text-shadow: none;
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Print styles */
@media print {
    * {
        background: transparent !important;
        color: black !important;
        box-shadow: none !important;
        text-shadow: none !important;
    }
    
    nav, footer {
        display: none;
    }
    
    a, a:visited {
        text-decoration: underline;
    }
    
    a[href]:after {
        content: " (" attr(href) ")";
    }
    
    h1, h2, h3 {
        page-break-after: avoid;
    }
}