/* ============================================
   CSS Variables - Neuro-inclusive Color Palette
   ============================================ */
:root {
    /* Colors */
    --bg-primary: #f5f5f5;
    --bg-secondary: #F9F9F9;
    --accent-pink: #e2d0cf;
    --accent-green: #D4E2D4;
    --text-primary: #233237;
    --text-secondary: #4A4A4A;
    --border-color: #233237;
    --brand-color: #984b43;
    
    /* Typography */
    --font-family: 'Neuton', serif;
    --font-family-heading: 'Alfa Slab One', cursive;
    --font-size-sm: 0.875rem; /* 14px */
    --font-size-base: 1.125rem; /* 18px */
    --font-size-lg: 1.25rem; /* 20px */
    --font-size-xl: 1.5rem; /* 24px */
    --font-size-2xl: 2rem; /* 32px */
    --font-size-3xl: 3rem; /* 48px */
    --font-size-4xl: 4rem; /* 64px */
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --heading-letter-spacing: 1px;
    --line-height-tight: 1.2;
    --line-height-normal: 1.6;
    --line-height-relaxed: 1.8;
    
    /* Spacing */
    --spacing-xs: 0.5rem; /* 8px */
    --spacing-sm: 1rem; /* 16px */
    --spacing-md: 1.5rem; /* 24px */
    --spacing-lg: 2rem; /* 32px */
    --spacing-xl: 3rem; /* 48px */
    --spacing-2xl: 4rem; /* 64px */
    --spacing-3xl: 6rem; /* 96px */
    
    /* Layout */
    --container-max-width: 1000px;
    --border-width: 1px;
    --border-radius: 0;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
}

/* ============================================
   Reset & Base Styles
   ============================================ */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Locale overrides */
.locale-ru {
    --font-family: 'Cactus Classical Serif', serif;
    --font-family-heading: 'Roboto Slab', serif;
}

.locale-ru .nav-list {
    gap: var(--spacing-sm);
}

/* ============================================
   Typography
   ============================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-family-heading);
    letter-spacing: var(--heading-letter-spacing);
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    text-align: left;
}

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

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

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

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

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

a:hover {
    opacity: 0.7;
}

a:focus-visible {
    outline: 3px solid var(--text-primary);
    outline-offset: 3px;
    border-radius: 2px;
}

/* ============================================
   Header
   ============================================ */
.site-header {
    border-bottom: var(--border-width) solid var(--border-color);
    background-color: var(--bg-primary);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg) var(--spacing-md) 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: var(--font-size-xl);
    color: var(--text-primary);
    display: flex;
    align-items: center;
}

.logo-text {
    color: var(--brand-color);
    font-weight: 400;
    transform: translateY(-8px);
}

.logo-text img {
    height: 2.6875rem;
    transform: translate(2px, 8px);
}

.dot {
    margin: 0 3px;
}

.com {
    transform: translateY(-1px);
}

/* Hamburger Button */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: space-around;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 101;
    position: relative;
}

.hamburger:focus-visible {
    outline: 3px solid var(--text-primary);
    outline-offset: 3px;
    border-radius: 2px;
}

.hamburger-line {
    width: 100%;
    height: 3px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: all var(--transition-base);
    transform-origin: center;
}

.hamburger-open .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translate(8px, 7.5px);
}

.hamburger-open .hamburger-line:nth-child(2) {
    opacity: 0;
}

.hamburger-open .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

.nav-list {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
}

.nav-link {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-xs) 0;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--text-primary);
    transition: width var(--transition-base);
}

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

/* Language Switcher */
.lang-switcher {
    display: flex;
    gap: var(--spacing-xs);
    align-items: center;
    margin-left: var(--spacing-md);
}

.lang-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: var(--border-width) solid var(--border-color);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: background-color var(--transition-base), color var(--transition-base);
    min-width: 40px;
}

.lang-btn:hover {
    background-color: var(--bg-secondary);
}

.lang-btn.active {
    background-color: var(--text-primary);
    color: var(--bg-primary);
}

.lang-btn:focus-visible {
    outline: 3px solid var(--text-primary);
    outline-offset: 3px;
    border-radius: 2px;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    position: relative;
    padding: var(--spacing-3xl) var(--spacing-lg);
    border-bottom: var(--border-width) solid var(--border-color);
    overflow: hidden;
}

.hero-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-family: var(--font-family-heading);
    letter-spacing: var(--heading-letter-spacing);
    font-size: 3rem;
    font-weight: var(--font-weight-bold);
    line-height: 1.3;
    margin-bottom: var(--spacing-lg);
    max-width: 900px;
}

.hero-subtitle {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    line-height: var(--line-height-relaxed);
    max-width: 700px;
}

/* ============================================
   Geometric Shapes (Decorative)
   ============================================ */
.geometric-shape {
    position: absolute;
    z-index: 0;
    opacity: 0.3;
    pointer-events: none;
}

.shape-1 {
    width: 350px;
    height: 350px;
    background-color: var(--accent-pink);
    top: -2%;
    right: 21%;
    opacity: 0.8;
    transform: rotate(15deg);
}

.shape-2 {
    width: 250px;
    height: 250px;
    background-color: var(--accent-green);
    bottom: 30%;
    right: 32%;
    transform: rotate(-10deg);
}

.shape-3 {
    width: 280px;
    height: 280px;
    background-color: var(--accent-green);
    top: 15%;
    left: 35%;
    transform: rotate(20deg);
}

.shape-4 {
    width: 220px;
    height: 220px;
    background-color: var(--accent-pink);
    bottom: 8%;
    left: 28%;
    transform: rotate(-25deg);
}

.shape-5 {
    width: 260px;
    height: 260px;
    background-color: var(--accent-green);
    top: 5%;
    right: 3%;
    transform: rotate(12deg);
}

/* ============================================
   Pet projects Section
   ============================================ */
.latest-work {
    position: relative;
    padding: var(--spacing-xl) var(--spacing-lg);
    border-bottom: var(--border-width) solid var(--border-color);
    background-color: var(--bg-secondary);
}

.work-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.section-heading {
    font-family: var(--font-family-heading);
    letter-spacing: var(--heading-letter-spacing);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    text-align: left;
}

.work-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-lg);
    list-style: none;
    margin-top: var(--spacing-xl);
}

.work-card {
    border: var(--border-width) solid var(--border-color);
    background-color: var(--bg-primary);
    padding: 0;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    min-height: 280px;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.work-card:hover,
.work-card:focus-within {
    transform: translateY(-4px);
    box-shadow: 8px 8px 0 0 var(--border-color);
}

.work-card:focus-visible {
    outline: 3px solid var(--text-primary);
    outline-offset: 3px;
}

.card-pink {
    background-color: var(--accent-pink);
}

.card-green {
    background-color: var(--accent-green);
}

/* Card Preview - Project Screenshot */
.card-preview {
    width: 100%;
    height: 200px;
    background-color: var(--bg-primary);
    border-bottom: var(--border-width) solid var(--border-color);
    overflow: hidden;
    position: relative;
}

.project-screenshot {
    width: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

.card-content {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding: var(--spacing-lg);
}

.card-title {
    font-family: var(--font-family-heading);
    letter-spacing: var(--heading-letter-spacing);
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
}

.card-description {
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    flex-grow: 1;
}

.card-link {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    align-self: flex-start;
    padding: var(--spacing-xs) 0;
    border-bottom: 2px solid var(--text-primary);
}

.card-link:hover {
    opacity: 0.7;
}

/* ============================================
   About Section
   ============================================ */
.about {
    padding: var(--spacing-3xl) var(--spacing-lg);
    border-bottom: var(--border-width) solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.about-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.about-content {
    display: flex;
    gap: var(--spacing-2xl);
    align-items: flex-start;
    max-width: 1200px;
}

.about-text-wrapper {
    flex: 1;
    max-width: 800px;
}

.about-text {
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

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

.about-image-wrapper {
    flex-shrink: 0;
    position: relative;
}

.about-image {
    width: 300px;
    height: 300px;
    object-fit: cover;
    object-position: center center;
    border: var(--border-width) solid var(--border-color);
    background-color: var(--bg-secondary);
}

/* ============================================
   Skills Section
   ============================================ */
.skills {
    padding: var(--spacing-xl) var(--spacing-lg);
    border-bottom: var(--border-width) solid var(--border-color);
    background-color: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.skills-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.skill-category {
    border: var(--border-width) solid var(--border-color);
    background-color: var(--bg-primary);
    padding: var(--spacing-lg);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.skill-category:hover {
    transform: translateY(-2px);
    box-shadow: 4px 4px 0 0 var(--border-color);
}

.skill-category-title {
    font-family: var(--font-family-heading);
    letter-spacing: var(--heading-letter-spacing);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.skill-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.skill-item {
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    color: var(--text-primary);
    padding: var(--spacing-xs) 0;
    border-bottom: 1px solid var(--border-color);
    position: relative;
    padding-left: var(--spacing-md);
}

.skill-item::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--text-primary);
    font-weight: var(--font-weight-bold);
}

.skill-item:last-child {
    border-bottom: none;
}

/* ============================================
   Contact Section
   ============================================ */
.contact {
    padding: var(--spacing-xl) var(--spacing-lg);
    border-bottom: var(--border-width) solid var(--border-color);
    background-color: var(--accent-pink);
    position: relative;
    overflow: hidden;
}

.contact-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.contact-text {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-xl);
}

.contact-link {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    display: inline-block;
    padding: var(--spacing-xs) 0;
    border-bottom: 2px solid var(--text-primary);
}

/* ============================================
   AI Playground Section
   ============================================ */
.ai-playground {
    padding: var(--spacing-xl) var(--spacing-lg);
    border-bottom: var(--border-width) solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.ai-playground-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.ai-playground-text {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    color: var(--text-secondary);
    max-width: 800px;
}

/* Image-to-Website */
.playground-section {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-lg);
    border: var(--border-width) solid var(--border-color);
    background-color: var(--bg-primary);
}

.playground-title {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.playground-description {
    font-size: var(--font-size-lg);
    line-height: var(--line-height-relaxed);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
}

.playground-note {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    opacity: 0.75;
    margin-bottom: var(--spacing-xl);
    font-style: italic;
}

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

@media (max-width: 768px) {
    .playground-content {
        grid-template-columns: 1fr;
    }
}

.playground-upload-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.upload-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-xl);
    border: 2px dashed var(--border-color);
    background-color: var(--bg-secondary);
    cursor: pointer;
    transition: background-color var(--transition-base);
    min-height: 200px;
}

.upload-label:hover {
    background-color: var(--accent-green);
}

.image-input {
    display: none;
}

.upload-label.disabled {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

.upload-label.disabled:hover {
    background-color: var(--bg-secondary);
}

.upload-icon {
    font-size: var(--font-size-3xl);
    margin-bottom: var(--spacing-sm);
}

.upload-text {
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    text-align: center;
}

.image-preview {
    max-width: 100%;
    max-height: 400px;
    object-fit: contain;
    border: var(--border-width) solid var(--border-color);
    background-color: var(--bg-secondary);
    margin-top: var(--spacing-md);
}

.playground-loading {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
}

.playground-loading::before {
    content: attr(data-loading-text);
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    animation: loading-text-pulse 1.5s ease-in-out infinite;
}

.playground-loading .loading-dots-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xs);
}

.loading-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--text-primary);
    animation: loading-bounce 1.4s infinite ease-in-out both;
    box-shadow: 0 2px 4px rgba(35, 50, 55, 0.2);
}

.loading-dot:nth-child(1) {
    animation-delay: -0.32s;
}

.loading-dot:nth-child(2) {
    animation-delay: -0.16s;
}

.loading-dot:nth-child(3) {
    animation-delay: 0s;
}

@keyframes loading-bounce {
    0%, 80%, 100% {
        transform: scale(0) translateY(0);
        opacity: 0.5;
    }
    40% {
        transform: scale(1) translateY(-8px);
        opacity: 1;
    }
}

@keyframes loading-text-pulse {
    0%, 100% {
        opacity: 0.7;
    }
    50% {
        opacity: 1;
    }
}

.playground-error {
    padding: var(--spacing-md);
    background-color: #fee;
    border: var(--border-width) solid #c33;
    color: #c33;
    font-size: var(--font-size-base);
}

.generate-code-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-lg);
    font-family: var(--font-family);
    background-color: var(--text-primary);
    color: var(--bg-primary);
    border: var(--border-width) solid var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-base);
    font-weight: var(--font-weight-semibold);
}

.generate-code-btn:hover:not(:disabled) {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

.generate-code-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.generate-code-btn.generating {
    position: relative;
    overflow: hidden;
    opacity: 0.9;
    animation: generating-pulse 2s ease-in-out infinite;
}

.generate-code-btn.generating::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    animation: generating-shimmer 2s infinite;
}

.generate-code-btn.generating::after {
    content: '';
    display: inline-block;
    width: 16px;
    height: 16px;
    margin-left: 8px;
    border: 2px solid var(--bg-primary);
    border-top-color: transparent;
    border-radius: 50%;
    animation: generating-spin 0.8s linear infinite;
    vertical-align: middle;
}

@keyframes generating-pulse {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(35, 50, 55, 0.4);
    }
    50% {
        transform: scale(1.02);
        box-shadow: 0 0 0 4px rgba(35, 50, 55, 0.1);
    }
}

@keyframes generating-shimmer {
    0% {
        left: -100%;
    }
    100% {
        left: 100%;
    }
}

@keyframes generating-spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

.playground-output-section {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.playground-output-section.shift-up {
    transform: translateY(-25px);
}

.code-output-label {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: 0;
    height: 0;
    overflow: visible;
    position: relative;
    line-height: 1.2;
}

.code-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    width: 100%;
}

.code-actions-row {
    display: flex;
    gap: var(--spacing-sm);
    width: 100%;
}

.preview-btn,
.copy-btn,
.download-btn {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    border: var(--border-width) solid var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-base);
    font-weight: var(--font-weight-semibold);
}

.preview-btn {
    background-color: var(--text-primary);
    color: var(--bg-primary);
}

.copy-btn,
.download-btn {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

.preview-btn-full {
    width: 100%;
}

.code-actions-row .copy-btn,
.code-actions-row .download-btn {
    flex: 1;
}

.preview-btn:hover:not(:disabled) {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

.copy-btn:hover:not(:disabled),
.download-btn:hover:not(:disabled) {
    background-color: var(--accent-green);
    color: var(--text-primary);
}

.preview-btn:disabled,
.copy-btn:disabled,
.download-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.code-output {
    width: 100%;
    min-height: 400px;
    padding: var(--spacing-md);
    font-family: 'Courier New', monospace;
    font-size: 0.875rem;
    line-height: var(--line-height-normal);
    border: var(--border-width) solid var(--border-color);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    resize: vertical;
    white-space: pre;
    overflow-x: auto;
}

.code-output:focus {
    outline: 2px solid var(--text-primary);
    outline-offset: 2px;
}

.code-output:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    background-color: var(--bg-secondary);
}

.code-output::placeholder {
    white-space: normal;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* Color Palette Section */
.color-palette-section {
    width: 100%;
    padding: var(--spacing-md);
    border: var(--border-width) solid var(--border-color);
    background-color: var(--bg-secondary);
    border-radius: 4px;
}

.color-palette-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.color-palette {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: var(--spacing-md);
    justify-items: center;
}

.color-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    width: 100%;
    max-width: 120px;
}

.color-swatch {
    width: 60px;
    height: 60px;
    border-radius: 4px;
    border: var(--border-width) solid var(--border-color);
    cursor: pointer;
    transition: transform var(--transition-base);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.color-swatch:hover {
    transform: scale(1.1);
}

.color-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
}

.color-hex {
    font-family: 'Courier New', monospace;
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    padding: var(--spacing-xs) var(--spacing-sm);
    background-color: var(--bg-primary);
    border: var(--border-width) solid var(--border-color);
    border-radius: 4px;
    transition: background-color var(--transition-base);
    text-align: center;
    min-width: fit-content;
    white-space: nowrap;
}

.color-hex:hover {
    background-color: var(--accent-green);
}

/* ============================================
   Job Description Matcher
   ============================================ */
.job-description-input {
    width: 100%;
    padding: var(--spacing-md);
    font-size: var(--font-size-base);
    font-family: var(--font-family);
    line-height: var(--line-height-relaxed);
    color: var(--text-primary);
    background-color: var(--bg-primary);
    border: var(--border-width) solid var(--border-color);
    border-radius: 4px;
    resize: vertical;
    min-height: 150px;
    transition: border-color var(--transition-base);
}

.job-description-input:focus {
    outline: none;
    border-color: var(--text-primary);
}

.job-description-input:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.match-report-section {
    width: 100%;
    padding: var(--spacing-lg);
    border: var(--border-width) solid var(--border-color);
    background-color: var(--bg-secondary);
    border-radius: 4px;
}

.match-report-title {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    text-align: center;
}

.match-score {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background-color: var(--bg-primary);
    border-radius: 8px;
    border: 2px solid var(--border-color);
}

.match-score-value {
    font-size: 3rem;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.match-score-label {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    font-weight: var(--font-weight-normal);
}

.match-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.match-detail-section {
    padding: var(--spacing-md);
    background-color: var(--bg-primary);
    border-radius: 4px;
    border-left: 4px solid var(--text-primary);
}

.match-detail-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.match-detail-content {
    font-size: var(--font-size-base);
    line-height: var(--line-height-relaxed);
    color: var(--text-secondary);
    white-space: pre-wrap;
}

/* ============================================
   Chat Interface
   ============================================ */
.chat-container {
    max-width: 800px;
    border: var(--border-width) solid var(--border-color);
    background-color: var(--bg-primary);
    display: flex;
    flex-direction: column;
    height: 600px;
    position: relative;
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    scroll-behavior: smooth;
}

.chat-messages::-webkit-scrollbar {
    width: 8px;
}

.chat-messages::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

.chat-messages::-webkit-scrollbar-thumb {
    background: var(--text-secondary);
    border: var(--border-width) solid var(--border-color);
}

.message {
    display: flex;
    flex-direction: column;
    max-width: 75%;
    animation: messageSlideIn var(--transition-base);
}

.message-user {
    align-self: flex-end;
}

.message-ai {
    align-self: flex-start;
}

.message-content {
    padding: var(--spacing-md);
    border: var(--border-width) solid var(--border-color);
    background-color: var(--bg-primary);
    line-height: var(--line-height-relaxed);
}

.message-user .message-content {
    background-color: var(--bg-secondary);
}

.message-ai .message-content {
    background-color: var(--accent-green);
}

.message-content p {
    margin: 0;
    color: var(--text-primary);
}

.typing-indicator {
    display: none;
    padding: var(--spacing-md) var(--spacing-lg);
    align-self: flex-start;
}

.typing-indicator.active {
    display: flex;
    gap: 6px;
    align-items: center;
}

.typing-dot {
    width: 8px;
    height: 8px;
    background-color: var(--text-primary);
    border-radius: 50%;
    animation: typingDot 1.4s infinite ease-in-out;
}

.typing-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typingDot {
    0%, 60%, 100% {
        transform: translateY(0);
        opacity: 0.7;
    }
    30% {
        transform: translateY(-10px);
        opacity: 1;
    }
}

@keyframes messageSlideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.chat-input-container {
    border-top: var(--border-width) solid var(--border-color);
    padding: var(--spacing-md);
    background-color: var(--bg-primary);
}

.chat-form {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
    justify-content: center;
}

.chat-input {
    flex: 1;
    padding: var(--spacing-md);
    border: var(--border-width) solid var(--border-color);
    background-color: var(--bg-primary);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    color: var(--text-primary);
    line-height: var(--line-height-normal);
}

.chat-input:focus {
    outline: 3px solid var(--text-primary);
    outline-offset: 2px;
}

.chat-input::placeholder {
    color: var(--text-secondary);
    opacity: 0.7;
}

.chat-send-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border: var(--border-width) solid var(--border-color);
    background-color: var(--text-primary);
    color: var(--bg-primary);
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    cursor: pointer;
    transition: background-color var(--transition-base), color var(--transition-base);
    min-width: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.chat-send-btn:hover {
    background-color: var(--text-secondary);
}

.chat-send-btn:focus-visible {
    outline: 3px solid var(--text-primary);
    outline-offset: 3px;
}

.chat-send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.send-icon {
    display: block;
    line-height: 1;
}

.chat-actions {
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: var(--border-width) solid var(--border-color);
    background-color: var(--bg-primary);
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    flex-wrap: wrap;
}

.generate-email-btn {
    padding: var(--spacing-md) var(--spacing-lg);
    border: var(--border-width) solid var(--border-color);
    background-color: var(--accent-green);
    color: var(--text-primary);
    font-family: var(--font-family);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: background-color var(--transition-base);
}

.generate-email-btn:hover {
    background-color: var(--accent-pink);
}

.generate-email-btn:focus-visible {
    outline: 3px solid var(--text-primary);
    outline-offset: 3px;
}

.generate-email-btn.generating {
    position: relative;
    overflow: hidden;
    opacity: 0.9;
    animation: generating-pulse-email 2s ease-in-out infinite;
    pointer-events: none;
}

.generate-email-btn.generating::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.4),
        transparent
    );
    animation: generating-shimmer 2s infinite;
}

.generate-email-btn.generating::after {
    content: '';
    display: inline-block;
    width: 14px;
    height: 14px;
    margin-left: 8px;
    border: 2px solid var(--text-primary);
    border-top-color: transparent;
    border-radius: 50%;
    animation: generating-spin 0.8s linear infinite;
    vertical-align: middle;
}

@keyframes generating-pulse-email {
    0%, 100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(212, 226, 212, 0.6);
    }
    50% {
        transform: scale(1.02);
        box-shadow: 0 0 0 4px rgba(212, 226, 212, 0.2);
    }
}

.contact-link-fallback {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    padding: var(--spacing-xs) 0;
    border-bottom: 2px solid var(--text-primary);
}

/* Screen reader only content */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* ============================================
   Footer
   ============================================ */
.site-footer {
    padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-xs) var(--spacing-lg);
    border-top: var(--border-width) solid var(--border-color);
    background-color: var(--bg-primary);
}

.footer-container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
}

.footer-text {
    font-size: var(--font-size-xl);
    color: var(--text-secondary);
    text-align: center;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    transform: translateX(-20px);
    margin-bottom: var(--spacing-xs);
}

.footer-logo {
    height: 3.5rem;
    vertical-align: middle;
}

.footer-recaptcha {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    text-align: center;
    opacity: 0.6;
}

.footer-recaptcha a {
    color: inherit;
    text-decoration: underline;
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
    justify-content: center;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: var(--border-width) solid var(--border-color);
    background-color: var(--bg-primary);
    transition: transform var(--transition-base), box-shadow var(--transition-base), background-color var(--transition-base);
    padding: var(--spacing-xs);
}

.social-link:hover,
.social-link:focus-visible {
    transform: translateY(-2px);
    box-shadow: 4px 4px 0 0 var(--border-color);
    background-color: var(--bg-secondary);
    opacity: 1;
}

.social-link:focus-visible {
    outline: 3px solid var(--text-primary);
    outline-offset: 3px;
}

.social-icon {
    width: 24px;
    height: 24px;
    color: var(--text-primary);
    stroke-width: 2;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (min-width: 769px) and (max-width: 1024px) {
    .header-container {
        padding: var(--spacing-sm) var(--spacing-md) var(--spacing-sm);
    }

    .logo {
        font-size: var(--font-size-lg);
    }

    .nav-link {
        font-size: var(--font-size-sm);
    }

    .lang-btn {
        font-size: var(--font-size-sm);
        min-width: 36px;
        padding: var(--spacing-xs);
    }
}

@media (max-width: 768px) {
    :root {
        --font-size-4xl: 2.5rem; /* 40px */
        --font-size-3xl: 2rem; /* 32px */
        --font-size-2xl: 1.5rem; /* 24px */
        --spacing-3xl: 4rem; /* 64px */
        --spacing-2xl: 3rem; /* 48px */
    }

    .header-container {
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding: var(--spacing-md) var(--spacing-lg);
    }

    .hamburger {
        display: flex;
    }

    .main-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--bg-primary);
        border-bottom: var(--border-width) solid var(--border-color);
        max-height: 0;
        overflow: hidden;
        transition: max-height var(--transition-base);
    }

    .main-nav.nav-open {
        max-height: 300px;
        overflow-y: auto;
        overflow-x: hidden;
    }

    .nav-list {
        flex-direction: column;
        gap: 0;
        padding: var(--spacing-sm) var(--spacing-lg);
        width: 100%;
    }

    .nav-list li {
        width: 100%;
        border-bottom: var(--border-width) solid var(--border-color);
    }

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

    .nav-link {
        display: block;
        padding: var(--spacing-sm) 0;
        width: 100%;
    }

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

    .lang-switcher {
        margin-left: var(--spacing-sm);
    }

    .lang-btn {
        padding: var(--spacing-xs);
        min-width: 36px;
        font-size: 0.875rem;
    }

    .main-nav.nav-open::-webkit-scrollbar {
        width: 6px;
    }

    .main-nav.nav-open::-webkit-scrollbar-track {
        background: var(--bg-secondary);
    }

    .main-nav.nav-open::-webkit-scrollbar-thumb {
        background: var(--text-secondary);
        border: var(--border-width) solid var(--border-color);
    }

    .hero {
        padding: var(--spacing-2xl) var(--spacing-lg);
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .work-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .card-preview {
        height: 180px;
    }

    .shape-1,
    .shape-2,
    .shape-3,
    .shape-4,
    .shape-5 {
        width: 200px;
        height: 200px;
    }

    .shape-1 {
        right: 9%;
        top: 8%;
    }

    .latest-work,
    .about,
    .skills,
    .ai-playground,
    .contact {
        padding: var(--spacing-2xl) var(--spacing-lg);
    }

    .about-content {
        flex-direction: column;
        gap: var(--spacing-xl);
        align-items: center;
    }

    .about-image-wrapper {
        width: 100%;
        display: flex;
        justify-content: center;
    }

    .about-image {
        width: 250px;
        height: 250px;
        margin: 0 auto;
    }

    .skills-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }

    .chat-container {
        height: 420px;
        margin-top: var(--spacing-md);
    }

    .chat-messages {
        padding: var(--spacing-md);
        gap: var(--spacing-sm);
    }

    .message {
        max-width: 85%;
    }

    .message-content {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 0.95rem;
    }

    .chat-input {
        font-size: 0.95rem;
        max-width: 85%;
    }

    .chat-send-btn {
        padding: var(--spacing-sm) var(--spacing-md);
        min-width: 45px;
        font-size: var(--font-size-lg);
    }

    .chat-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .generate-email-btn {
        width: 100%;
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .contact-text {
        font-size: var(--font-size-base);
        margin-bottom: var(--spacing-sm);
    }

    .contact .section-heading {
        margin-bottom: var(--spacing-md);
    }

    .social-links {
        gap: var(--spacing-sm);
    }

    .social-link {
        width: 36px;
        height: 36px;
    }

    .social-icon {
        width: 20px;
        height: 20px;
    }

    .match-detail-section {
        border-left: none;
    }
}

@media (max-width: 480px) {
    :root {
        --font-size-4xl: 2rem; /* 32px */
        --font-size-3xl: 1.75rem; /* 28px */
        --spacing-lg: 1.5rem; /* 24px */
    }

    .header-container {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .main-nav.nav-open {
        max-height: 280px;
        overflow-y: auto;
        overflow-x: hidden;
    }

    .hero,
    .latest-work,
    .about,
    .skills,
    .ai-playground,
    .contact {
        padding-left: var(--spacing-md);
        padding-right: var(--spacing-md);
    }

    .about-image-wrapper {
        width: 100%;
        display: flex;
        justify-content: center;
    }

    .about-image {
        width: 200px;
        height: 200px;
        margin: 0 auto;
    }

    .card-preview {
        height: 150px;
    }

    .shape-1,
    .shape-2,
    .shape-3,
    .shape-4,
    .shape-5 {
        width: 150px;
        height: 150px;
    }

    .shape-1 {
        top: 8%;
    }

    .contact {
        padding: var(--spacing-xl) var(--spacing-md);
    }

    .contact .section-heading {
        margin-bottom: var(--spacing-sm);
    }

    .contact-text {
        margin-bottom: var(--spacing-sm);
    }

    .chat-container {
        margin-top: var(--spacing-md);
    }

    .chat-messages {
        padding: var(--spacing-sm) var(--spacing-md);
        gap: var(--spacing-xs);
    }

    .message {
        max-width: 92%;
    }

    .message-content {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 0.875rem;
        line-height: 1.5;
    }

    .message-content p {
        margin: 0;
    }

    .chat-form {
        gap: var(--spacing-xs);
    }

    .chat-input {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 16px; /* Prevents zoom on iOS */
        line-height: 1.4;
        max-width: 75%;
    }

    .chat-send-btn {
        padding: var(--spacing-xs) var(--spacing-sm);
        min-width: 40px;
        font-size: var(--font-size-base);
    }

    .send-icon {
        font-size: var(--font-size-base);
    }

    .generate-email-btn {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .typing-indicator {
        padding: var(--spacing-xs) var(--spacing-sm);
    }
}

/* ============================================
   Accessibility Enhancements
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --border-color: #000000;
        --text-primary: #000000;
        --bg-primary: #FFFFFF;
    }
}

/* Hide reCAPTCHA badge (disclosure text shown in footer per Google ToS) */
.grecaptcha-badge {
    visibility: hidden !important;
}

/* Print styles */
@media print {
    .site-header,
    .site-footer,
    .geometric-shape {
        display: none;
    }

    body {
        background-color: white;
    }

    .work-card {
        break-inside: avoid;
        page-break-inside: avoid;
    }
}