/* ==========================================================================
   Rick Dakan Personal Website
   Custom CSS - No frameworks
   ========================================================================== */

/* Content Loading State - prevents flash of placeholder content */
html.content-loading main {
    opacity: 0;
}
html:not(.content-loading) main {
    opacity: 1;
    transition: opacity 0.15s ease-in;
}

/* ==========================================================================
   CSS Custom Properties (Design Tokens)
   ========================================================================== */

:root {
    /* Colors - Clean white/black with fiery red nav and dusty blue accents */
    --color-primary: #d42a2a;         /* Fiery red */
    --color-primary-dark: #a82222;    /* Darker red */
    --color-primary-light: #e04545;   /* Lighter red */
    --color-accent: #5d8aa8;          /* Dusty blue */
    --color-accent-dark: #4a7089;     /* Darker dusty blue */
    --color-accent-light: #7ba3bd;    /* Lighter dusty blue */
    --color-secondary: #5d8aa8;       /* Dusty blue (same as accent) */
    --color-secondary-dark: #4a7089;

    /* Nav/Footer - Fiery red */
    --color-nav: #d42a2a;
    --color-nav-dark: #a82222;

    /* 4D Colors - variations of dusty blue and complementary tones */
    --color-d1: #d42a2a;      /* Fiery red - Discover */
    --color-d2: #5d8aa8;      /* Dusty blue - Discern */
    --color-d3: #7ba3bd;      /* Light dusty blue - Deploy */
    --color-d4: #3d6b7a;      /* Dark teal blue - Direct */

    /* Neutrals */
    --color-white: #ffffff;
    --color-off-white: #f8f9fa;
    --color-light-gray: #e5e7eb;
    --color-mid-gray: #6b7280;
    --color-dark-gray: #1f2937;
    --color-black: #111827;

    /* Typography - Clean sans-serif with Inter */
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    /* Font sizes - based on 18px base */
    --font-size-xs: 0.75rem;      /* 13.5px */
    --font-size-sm: 0.875rem;     /* 15.75px */
    --font-size-base: 1rem;       /* 18px */
    --font-size-lg: 1.125rem;     /* 20.25px */
    --font-size-xl: 1.25rem;      /* 22.5px */
    --font-size-2xl: 1.5rem;      /* 27px */
    --font-size-3xl: 1.875rem;    /* 33.75px */
    --font-size-4xl: 2.25rem;     /* 40.5px */
    --font-size-5xl: 3rem;        /* 54px */

    /* Line heights */
    --line-height-tight: 1.25;
    --line-height-normal: 1.6;
    --line-height-relaxed: 1.75;

    /* Spacing scale */
    --space-xs: 0.25rem;   /* 4px */
    --space-sm: 0.5rem;    /* 8px */
    --space-md: 1rem;      /* 16px */
    --space-lg: 1.5rem;    /* 24px */
    --space-xl: 2rem;      /* 32px */
    --space-2xl: 3rem;     /* 48px */
    --space-3xl: 4rem;     /* 64px */
    --space-4xl: 6rem;     /* 96px */

    /* Layout */
    --container-max-width: 1200px;
    --container-padding: var(--space-lg);

    /* Borders - sharper for bold look */
    --border-radius-sm: 0;
    --border-radius-md: 0;
    --border-radius-lg: 0;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}

/* ==========================================================================
   Base Styles / Reset
   ========================================================================== */

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

html {
    font-size: 18px;
    scroll-behavior: smooth;
}

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-body);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--color-black);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: var(--line-height-tight);
    margin-top: 0;
    margin-bottom: var(--space-md);
    color: var(--color-black);
}

h1 {
    font-size: var(--font-size-4xl);
}

h2 {
    font-size: var(--font-size-3xl);
}

h3 {
    font-size: var(--font-size-2xl);
}

h4 {
    font-size: var(--font-size-xl);
}

p {
    margin-top: 0;
    margin-bottom: var(--space-md);
}

a {
    color: var(--color-accent);
    text-decoration: underline;
    text-underline-offset: 3px;
    transition: color var(--transition-fast);
}

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

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

ul, ol {
    padding-left: var(--space-lg);
    margin-top: 0;
    margin-bottom: var(--space-md);
}

li {
    margin-bottom: var(--space-sm);
}

/* ==========================================================================
   Accessibility
   ========================================================================== */

.skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-md);
    z-index: 1000;
    padding: var(--space-sm) var(--space-md);
    background-color: var(--color-accent);
    color: var(--color-white);
    text-decoration: none;
    border-radius: var(--border-radius-sm);
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--space-md);
    color: var(--color-white);
}

/* Focus styles */
:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

/* ==========================================================================
   Layout
   ========================================================================== */

.container {
    width: 100%;
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
    background-color: var(--color-nav);
    border-bottom: none;
    position: sticky;
    top: 0;
    z-index: 100;
}

.site-header .container {
    display: flex;
    justify-content: flex-start;
    align-items: center;
    padding-top: var(--space-md);
    padding-bottom: var(--space-md);
}

/* Navigation toggle (hamburger) */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
    width: 44px;
    height: 44px;
    position: relative;
}

.nav-toggle-icon,
.nav-toggle-icon::before,
.nav-toggle-icon::after {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-white);
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    transition: var(--transition-fast);
}

.nav-toggle-icon {
    top: 50%;
    transform: translate(-50%, -50%);
}

.nav-toggle-icon::before,
.nav-toggle-icon::after {
    content: '';
}

.nav-toggle-icon::before {
    top: -8px;
}

.nav-toggle-icon::after {
    top: 8px;
}

/* Hamburger animation when open */
.nav-toggle[aria-expanded="true"] .nav-toggle-icon {
    background-color: transparent;
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::before {
    top: 0;
    transform: translateX(-50%) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle-icon::after {
    top: 0;
    transform: translateX(-50%) rotate(-45deg);
}

/* Navigation menu */
.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: var(--space-lg);
}

.nav-link {
    font-size: 1.3rem;
    font-weight: 600;
    color: var(--color-white);
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: var(--space-sm) 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background-color: var(--color-accent);
    transition: width var(--transition-fast);
}

.nav-link:hover,
.nav-link:focus {
    color: var(--color-accent-light);
}

.nav-link.active {
    color: var(--color-white);
}

.nav-link:hover::after,
.nav-link:focus::after {
    width: 100%;
}

.nav-link.active::after {
    width: 100%;
    background-color: var(--color-white);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
    background-color: var(--color-nav);
    color: var(--color-white);
    padding: var(--space-2xl) 0;
    margin-top: var(--space-3xl);
}

.footer-content {
    text-align: center;
}

.footer-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-lg);
    margin-bottom: var(--space-lg);
}

.footer-links a {
    color: var(--color-white);
    text-decoration: none;
    font-size: var(--font-size-xl);
    transition: color var(--transition-fast);
}

.footer-links a:hover,
.footer-links a:focus {
    color: var(--color-accent-light);
}

.copyright {
    font-size: var(--font-size-sm);
    color: var(--color-light-gray);
    margin-bottom: 0;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
    display: inline-block;
    padding: var(--space-md) var(--space-xl);
    font-family: var(--font-body);
    font-size: var(--font-size-sm);
    font-weight: 700;
    text-decoration: none;
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 0;
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-white);
}

.btn-primary:hover,
.btn-primary:focus {
    background-color: var(--color-accent-dark);
    color: var(--color-white);
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: var(--color-white);
    color: var(--color-accent);
}

.btn-secondary:hover,
.btn-secondary:focus {
    background-color: var(--color-accent);
    color: var(--color-white);
    transform: translateY(-2px);
}

/* ==========================================================================
   Hero Section (Home Page)
   ========================================================================== */

.hero {
    padding: 0;
    background-color: var(--color-white);
    color: var(--color-black);
}

.hero .container {
    padding-top: var(--space-3xl);
    padding-bottom: var(--space-3xl);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
    align-items: center;
}

.hero-text h1 {
    font-size: var(--font-size-5xl);
    font-weight: 800;
    margin-bottom: var(--space-lg);
    color: var(--color-black);
    text-transform: uppercase;
    letter-spacing: -0.02em;
}

.lead {
    font-size: var(--font-size-xl);
    color: var(--color-dark-gray);
    margin-bottom: var(--space-lg);
    font-weight: 400;
}

.hero-text p:not(.lead) {
    color: var(--color-dark-gray);
}

.hero-image {
    display: flex;
    justify-content: center;
}

.photo-placeholder {
    width: 300px;
    height: 300px;
    background-color: var(--color-accent);
    border-radius: var(--border-radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: var(--font-size-lg);
    font-weight: 700;
    border: none;
}

/* ==========================================================================
   Page Content
   ========================================================================== */

.page-content {
    padding: 0;
}

.page-header {
    background-color: var(--color-white);
    color: var(--color-black);
    padding: var(--space-3xl) 0;
    margin-bottom: var(--space-2xl);
    border-bottom: 4px solid var(--color-accent);
}

.page-header .container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

.page-header h1 {
    margin-bottom: var(--space-md);
    color: var(--color-black);
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: -0.02em;
}

.page-header .lead {
    margin-bottom: 0;
    color: var(--color-dark-gray);
}

/* ==========================================================================
   AI Fluency Page
   ========================================================================== */

.framework-about {
    padding: var(--space-lg) 0;
    background-color: var(--color-accent);
    color: var(--color-white);
    text-align: center;
}

.framework-about p {
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    font-size: 1.3rem;
    line-height: 1.5;
}

.framework-about .btn {
    margin-top: var(--space-md);
    display: inline-block;
    padding: var(--space-sm) var(--space-xl);
    background-color: var(--color-white);
    color: var(--color-accent);
    font-weight: 700;
    font-size: 1.1rem;
    border-radius: 4px;
    text-decoration: none;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.framework-about .btn:hover,
.framework-about .btn:focus {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    color: var(--color-accent);
}

.framework-intro {
    margin-bottom: var(--space-2xl);
    font-size: var(--font-size-lg);
    padding: 0 var(--container-padding);
    max-width: var(--container-max-width);
    margin-left: auto;
    margin-right: auto;
}

/* 4Ds Fluencies - Boxed design */
.framework-fluencies {
    max-width: 800px;
    margin: 0 auto var(--space-2xl);
    padding: 0 var(--container-padding);
}

.fluencies-title {
    font-size: var(--font-size-3xl);
    margin-top: var(--space-xl);
    margin-bottom: var(--space-xl);
    color: var(--color-black);
}

.fluency {
    background-color: var(--color-white);
    padding: var(--space-lg) var(--space-xl);
    margin-bottom: var(--space-lg);
    border: 3px solid;
}

.fluency h3 {
    font-size: var(--font-size-xl);
    font-weight: 700;
    text-transform: uppercase;
    margin-bottom: var(--space-sm);
}

.fluency p {
    color: var(--color-black);
    margin-bottom: 0;
    font-size: var(--font-size-base);
}

/* Fluency colors matching PowerPoint */
.fluency.f1 {
    border-color: #2e5fa3;
}
.fluency.f1 h3 {
    color: #2e5fa3;
}

.fluency.f2 {
    border-color: #d4912a;
}
.fluency.f2 h3 {
    color: #d4912a;
}

.fluency.f3 {
    border-color: #5a8f3e;
}
.fluency.f3 h3 {
    color: #5a8f3e;
}

.fluency.f4 {
    border-color: #c43c3c;
}
.fluency.f4 h3 {
    color: #c43c3c;
}

.framework-credits {
    padding: var(--space-2xl) var(--container-padding);
    background-color: var(--color-accent-dark);
    color: var(--color-white);
    text-align: center;
}

.framework-credits h2 {
    font-size: var(--font-size-xl);
    color: var(--color-white);
    text-transform: uppercase;
}

.framework-credits p {
    color: rgba(255, 255, 255, 0.9);
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

/* Anthropic Courses Section */
.anthropic-courses {
    padding: var(--space-2xl) 0;
    background-color: var(--color-off-white);
}

.anthropic-courses h2 {
    text-transform: uppercase;
    letter-spacing: 0.02em;
    margin-bottom: var(--space-xl);
}

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

.courses-list li {
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--color-light-gray);
}

.courses-list li:last-child {
    border-bottom: none;
}

.courses-list a {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-accent);
    text-decoration: none;
}

.courses-list a:hover,
.courses-list a:focus {
    color: var(--color-accent-dark);
    text-decoration: underline;
}

/* ==========================================================================
   Creative Work Page (Portfolio)
   ========================================================================== */

.portfolio-section {
    margin-bottom: 0;
    padding: var(--space-2xl) var(--container-padding);
}

.portfolio-section:nth-of-type(odd) {
    background-color: var(--color-off-white);
}

.portfolio-section h2 {
    padding-bottom: var(--space-md);
    border-bottom: 4px solid var(--color-accent);
    margin-bottom: var(--space-xl);
    text-transform: uppercase;
    letter-spacing: 0.02em;
    display: inline-block;
}

.portfolio-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
}

.portfolio-item {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-lg);
    padding: var(--space-lg);
    background-color: var(--color-white);
    border-left: 4px solid var(--color-accent);
}

.portfolio-image {
    width: 100%;
}

.image-placeholder {
    width: 100%;
    aspect-ratio: 3 / 4;
    max-width: 200px;
    background-color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: var(--font-size-sm);
    font-weight: 700;
    border: none;
}

.portfolio-info h3 {
    margin-bottom: var(--space-xs);
    color: var(--color-black);
    font-weight: 700;
}

.portfolio-info .year {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
}

.portfolio-info .role {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-secondary-dark);
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
}

/* Work Sections (simplified list format) */
.work-section {
    padding: var(--space-2xl) 0;
}

.work-section.alt {
    background-color: var(--color-off-white);
}

.work-section h2 {
    padding-bottom: var(--space-md);
    border-bottom: 4px solid var(--color-accent);
    margin-bottom: var(--space-xl);
    text-transform: uppercase;
    letter-spacing: 0.02em;
    display: inline-block;
}

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

.work-list li {
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--color-light-gray);
    line-height: var(--line-height-relaxed);
}

.work-list li:last-child {
    border-bottom: none;
}

.work-list li strong {
    color: var(--color-black);
}

.work-item {
    margin-bottom: var(--space-xl);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--color-off-white);
}

.work-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.work-title {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-sm);
}

.work-description {
    color: var(--color-dark-gray);
    line-height: 1.7;
}

.work-description p {
    margin-bottom: var(--space-sm);
}

.work-description p:last-child {
    margin-bottom: 0;
}

.work-description a {
    color: var(--color-accent);
    text-decoration: underline;
}

.work-description a:hover {
    color: var(--color-accent-dark);
}

/* ==========================================================================
   About Page
   ========================================================================== */

.about-page {
    padding: var(--space-2xl) 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
    align-items: start;
}

.about-photo {
    display: flex;
    justify-content: center;
}

.photo-placeholder.large {
    width: 350px;
    height: 400px;
    background-color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-size: var(--font-size-lg);
    font-weight: 700;
}

.about-bio {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
}

.about-bio p {
    margin-bottom: var(--space-lg);
}

.about-bio p:last-child {
    margin-bottom: 0;
}

@media (min-width: 768px) {
    .about-content {
        grid-template-columns: 350px 1fr;
    }
}

/* ==========================================================================
   Speaking Page
   ========================================================================== */

.upcoming-events {
    padding: var(--space-2xl) 0;
}

.upcoming-events h2 {
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.past-events {
    padding: var(--space-2xl) 0;
    background-color: var(--color-off-white);
}

.past-events h2 {
    text-transform: uppercase;
    letter-spacing: 0.02em;
    margin-bottom: var(--space-xl);
}

.past-event {
    margin-bottom: var(--space-2xl);
}

.past-event:last-child {
    margin-bottom: 0;
}

.event-name {
    color: var(--color-accent);
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-md);
}

.video-embed {
    position: relative;
    width: 100%;
    max-width: 800px;
    padding-bottom: 45%; /* 16:9 aspect ratio adjusted for max-width */
    background-color: var(--color-dark-gray);
}

.video-embed iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.video-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-weight: 700;
    background-color: var(--color-accent);
}

.booking-section {
    padding: var(--space-lg) 0;
    border-top: 1px solid var(--color-light-gray);
}

.booking-section p {
    margin-bottom: 0;
    font-size: var(--font-size-sm);
    color: var(--color-mid-gray);
}

.booking-section a {
    color: var(--color-accent);
}

/* Legacy bio section styles (can be removed if not used) */
.bio-section {
    margin-bottom: 0;
    padding: var(--space-2xl) var(--container-padding);
    background-color: var(--color-off-white);
}

.bio-section h2 {
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.bio-version {
    margin-bottom: var(--space-xl);
    padding: var(--space-lg);
    background-color: var(--color-white);
    border-left: 4px solid var(--color-secondary);
}

.bio-version h3 {
    font-size: var(--font-size-lg);
    color: var(--color-black);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    font-weight: 700;
}

.bio-version p:last-child {
    margin-bottom: 0;
}

.topics-section {
    margin-bottom: 0;
    padding: var(--space-2xl) var(--container-padding);
}

.topics-section h2 {
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.topics-list {
    list-style: none;
    padding: 0;
}

.topics-list li {
    margin-bottom: var(--space-lg);
    padding: var(--space-lg);
    background-color: var(--color-accent);
    color: var(--color-white);
    border-left: 4px solid var(--color-primary);
}

.topics-list h3 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--space-sm);
    color: var(--color-white);
    text-transform: uppercase;
}

.topics-list p {
    margin-bottom: 0;
    color: rgba(255, 255, 255, 0.85);
}

.events-section {
    margin-bottom: 0;
    padding: var(--space-2xl) var(--container-padding);
    background-color: var(--color-off-white);
}

.events-section h2 {
    text-transform: uppercase;
    letter-spacing: 0.02em;
}

.events-list {
    margin-top: var(--space-lg);
}

.no-events {
    padding: var(--space-xl);
    background-color: var(--color-white);
    text-align: center;
    color: var(--color-mid-gray);
    font-style: italic;
    border-left: 4px solid var(--color-mid-gray);
}

.event {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    padding: var(--space-lg);
    background-color: var(--color-white);
    margin-bottom: var(--space-md);
    border-left: 4px solid var(--color-accent);
}

.event h3 {
    margin: 0;
}

.event-description {
    margin: 0;
}

.event-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-md);
    background-color: var(--color-accent);
    color: var(--color-white);
    min-width: 80px;
}

.event-date .month {
    font-size: var(--font-size-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 700;
}

.event-date .day {
    font-size: var(--font-size-2xl);
    font-weight: 800;
    line-height: 1;
}

.event-date .year {
    font-size: var(--font-size-sm);
}

.event-info h3 {
    margin-bottom: var(--space-xs);
}

.event-location {
    color: var(--color-mid-gray);
    margin-bottom: 0;
}

.contact-section {
    padding: var(--space-2xl) var(--container-padding);
    background-color: var(--color-primary);
    color: var(--color-white);
    text-align: center;
}

.contact-section h2 {
    color: var(--color-white);
    text-transform: uppercase;
}

.contact-section p {
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.contact-section a {
    color: var(--color-white);
    font-weight: 700;
    text-decoration: underline;
}

.contact-section a:hover,
.contact-section a:focus {
    color: var(--color-light-gray);
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

/* Mobile - 480px */
@media (max-width: 479px) {
    html {
        font-size: 16px;
    }

    .hero-text h1 {
        font-size: var(--font-size-3xl);
    }
}

/* Tablet - 768px */
@media (min-width: 480px) {
    .portfolio-item {
        grid-template-columns: 150px 1fr;
    }

    .image-placeholder {
        max-width: 150px;
    }
}

/* Mobile navigation */
@media (max-width: 767px) {
    .nav-toggle {
        display: block;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background-color: var(--color-nav);
        border-bottom: none;
        padding: 0;
        gap: 0;
        display: none;
    }

    .nav-menu.is-open {
        display: flex;
    }

    .nav-menu li {
        margin-bottom: 0;
        border-top: 1px solid rgba(255, 255, 255, 0.1);
    }

    .nav-link {
        display: block;
        padding: var(--space-md) var(--space-lg);
    }

    .nav-link::after {
        display: none;
    }

    .nav-link.active {
        background-color: var(--color-nav-dark);
    }

    .footer-links {
        flex-direction: column;
        gap: var(--space-md);
    }
}

/* Desktop - 768px+ */
@media (min-width: 768px) {
    .hero-content {
        grid-template-columns: 1fr auto;
    }

    .hero-text {
        order: 1;
    }

    .hero-image {
        order: 2;
    }

    .photo-placeholder {
        width: 350px;
        height: 350px;
    }

    .framework-fluencies {
        max-width: 900px;
    }

    .portfolio-item {
        grid-template-columns: 200px 1fr;
    }

    .image-placeholder {
        max-width: 200px;
    }
}

/* Large Desktop - 1024px+ */
@media (min-width: 1024px) {
    .hero {
        padding: var(--space-4xl) 0;
    }

    .hero-text h1 {
        font-size: var(--font-size-5xl);
    }

    .portfolio-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .bio-section {
        display: grid;
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-lg);
    }

    .bio-section h2 {
        grid-column: 1 / -1;
    }

    .bio-version {
        margin-bottom: 0;
    }
}

/* ==========================================================================
   Print Styles
   ========================================================================== */

@media print {
    .site-header,
    .site-footer,
    .skip-link,
    .btn {
        display: none;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
        color: black;
    }

    a {
        color: black;
        text-decoration: underline;
    }

    .page-content {
        padding: 0;
    }

    .container {
        max-width: 100%;
        padding: 0;
    }
}