* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    text-underline-offset: 0.3em;
    font-family: inherit;
}

:root {
    --primary-color: #00574a;
    --primary-hover: #003D34;
    --text-primary: #001f1b;
    --text-secondary: #002b25;
    --bg-primary: #ffffff;
    --bg-secondary: #f8faf9;
    --bg-alt: #f0f5f3;
    --border-color: #d5e0dc;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
    --border-width: 2px;
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --font-sans: 'Outfit', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-heading: 'Albert Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --max-width: 75rem;
    --container-padding: 1rem;
    --header-height: 4.0625rem;

    --animation-float: float 3s ease-in-out infinite;
    --animation-slide: slideInUp 0.6s ease-out;
    --animation-fade: fadeIn 0.8s ease-out;

    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    --text-xs: 1rem;
    --text-sm: 1rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;
    --text-5xl: 3rem;
    --text-6xl: 3.75rem;

    --z-drawer: 1050;
    --hero-height: 80vh;
    --content-max-width: 80ch;
    --project-image-height: 12.5rem;

    --error-color: #ef4444;
    --focus-ring: rgba(37, 99, 235, 0.1);
    --focus-outline: var(--border-width) solid var(--primary-color);
    --focus-offset: .25rem;
    --focus-radius: 0.1rem;
    --on-primary: #ffffff;
    --switch-off: #b0c4bf;
    --switch-on: #00574a;
    --switch-knob: #ffffff;
}

[data-theme="dark"] {
    --primary-color: #ffffff;
    --primary-hover: #ffffff;
    --text-primary: #ffffff;
    --text-secondary: #ffffff;
    --bg-primary: #0c1f1b;
    --bg-secondary: #00574a;
    --bg-alt: #003D34;
    --border-color: #006B57;
    --on-primary: #001f1b;
    --switch-off: #006B57;
    --switch-on: #4fd1b8;
    --switch-knob: #0c1f1b;
}

[data-theme="high-contrast"] {
    --primary-color: #0066cc;
    --primary-hover: #0052a3;
    --text-primary: #000000;
    --text-secondary: #000000;
    --bg-primary: #ffffff;
    --bg-secondary: #ffffff;
    --bg-alt: #ffffff;
    --border-color: #000000;
}

[data-theme="dyslexic-font"] {
    --font-sans: 'OpenDyslexic', 'Comic Sans MS', cursive;
    --font-heading: 'OpenDyslexic', 'Comic Sans MS', cursive;
}

[data-theme="wcag-aa"] {
    line-height: 1.5;
    letter-spacing: 0.12em;
    word-spacing: 0.16em;
}

[data-theme="wcag-aaa"] {
    line-height: 1.6;
    letter-spacing: 0.16em;
    word-spacing: 0.2em;
}

[data-theme="low-vision"] {
    line-height: 1.7;
    letter-spacing: 0.2em;
    word-spacing: 0.25em;
    font-weight: 600;
}

[data-theme="cognitive"] {
    line-height: 1.8;
    letter-spacing: 0.08em;
    word-spacing: 0.12em;
}

[data-theme="text-spacing"] {
    line-height: 1.8;
    letter-spacing: 0.05em;
    word-spacing: 0.1em;

    & .timeline-content { line-height: 2; }
    & .tech-tag { padding: var(--spacing-sm) var(--spacing-lg); }
}

[data-theme="inverted-contrast"] {
    filter: invert(100%);

    & :is(img, video, picture, [class*="avatar"], .project-image) {
        filter: invert(100%);
    }
}

[data-reduced-motion="true"] {
    --animation-float: none;
    --animation-slide: none;
    --animation-fade: none;

    & * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

html {
    font-size: var(--text-base);
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    line-height: 1.6;
    color: var(--text-primary);
    background-color: var(--bg-primary);
    overflow-x: hidden;
    transition: color var(--transition-base), background-color var(--transition-base);
}

.nav-brand-name,
.section-title,
.hero-title,
.drawer-title,
.accessibility-section-title,
.timeline-title,
.timeline-company,
.diploma-title,
.talk-title,
.project-title,
.extra-title {
    font-family: var(--font-heading);
}

:focus-visible {
    outline: var(--focus-outline);
    outline-offset: var(--focus-offset);
    border-radius: var(--focus-radius);
}

:focus:not(:focus-visible) {
    outline: none;
}

.skip-link {
    position: absolute;
    top: -3.125rem;
    left: 0.375rem;
    background: var(--primary-color);
    color: var(--on-primary);
    padding: var(--spacing-sm);
    text-decoration: none;
    border-radius: var(--radius-sm);
    z-index: 10000;
    transition: top var(--transition-fast);

    &:focus { top: 0.375rem; }
}

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

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

.accessibility-drawer {
    border: none;
    border-radius: 0;
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.15);
    background: var(--bg-primary);
    color: var(--text-primary);
    width: 23.75rem;
    max-width: 90vw;
    height: 100vh;
    max-height: 100vh;
    overflow-y: auto;
    padding: 0;
    position: fixed;
    inset: 0 0 0 auto;
    margin: 0;
    transform: translateX(100%);
    transition: transform var(--transition-base);
    z-index: var(--z-drawer);
    display: block;
    visibility: hidden;
    pointer-events: none;

    &[open] {
        transform: translateX(0);
        visibility: visible;
        pointer-events: auto;
    }

    &::backdrop { display: none; }
}

.drawer-header {
    position: sticky;
    top: 0;
    z-index: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md);
    border-bottom: var(--border-width) solid var(--border-color);
    background: var(--bg-secondary);
}

.drawer-title {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--text-primary);
}

.close-drawer-btn {
    background: transparent;
    border: none;
    font-size: var(--text-2xl);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: var(--spacing-xl);
    height: var(--spacing-xl);

    &:focus {
        background: var(--bg-alt);
        color: var(--text-primary);
    }
}

.drawer-content {
    padding: var(--spacing-xl);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2xl);
}

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

.accessibility-section-title {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
}

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

.color-pickers-row {
    display: flex;
    gap: var(--spacing-md);
    justify-content: space-between;
}

.color-picker-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    flex: 1;
}

.color-input-label {
    font-size: var(--text-xs);
    font-weight: 500;
    color: var(--text-secondary);
}

.color-picker {
    width: 100%;
    height: 2.5rem;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    background: transparent;
    padding: 0;
}

.color-actions {
    display: flex;
    gap: var(--spacing-sm);
}

.apply-color-btn {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--text-sm);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
    border: var(--border-width) solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
}

.apply-color-btn {
    background: var(--bg-secondary);

    &:focus {
        border-color: var(--primary-color);
        color: var(--text-primary);
    }
}

.global-reset-btn {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-md);
    font-size: var(--text-base);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
    border: var(--border-width) solid var(--primary-color);
    background: transparent;
    color: var(--primary-color);

    &:hover {
        background: var(--primary-color);
        color: var(--on-primary);
    }

    &:focus {
        background: var(--primary-color);
        color: var(--on-primary);
    }
}

.font-family-switcher {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.font-family-option {
    flex: 1 1 calc(50% - var(--spacing-xs));
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
    padding: var(--spacing-sm) var(--spacing-xs);
    background: var(--bg-secondary);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--text-secondary);

    &:hover { transform: translateY(-1px); }
    &:focus { border-color: var(--primary-color); color: var(--text-primary); }

    &[aria-pressed="true"] {
        background: var(--primary-color);
        border-color: var(--primary-color);
        color: var(--on-primary);
        box-shadow: var(--shadow-sm);
        position: relative;

        &::after {
            content: '✓';
            position: absolute;
            top: 2px;
            right: 4px;
            font-size: var(--text-xs);
            font-weight: 700;
            color: var(--on-primary);
            line-height: 1;
        }
    }

    & .font-preview {
        font-size: var(--text-xl);
        font-weight: 600;
        line-height: 1;
    }

    & .font-label {
        font-size: var(--text-xs);
        font-weight: 500;
    }
}

.theme-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: var(--text-base);
    cursor: pointer;
    transition: border-color var(--transition-fast);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--spacing-md) center;
    padding-right: var(--spacing-2xl);

    &:focus { border-color: var(--primary-color); }
}

.switch-control {
    display: flex;
    align-items: center;
    padding: var(--spacing-sm) 0;
    cursor: pointer;
    user-select: none;
    gap: var(--spacing-md);
}

.switch-label {
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--text-primary);
}

.switch-input {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;

    &:checked + .switch-track {
        background: var(--switch-on);

        &::after { transform: translateX(1.25rem); }
    }

    &:focus-visible + .switch-track {
        outline: var(--focus-outline);
        outline-offset: var(--focus-offset);
        border-radius: var(--focus-radius);
    }
}

.switch-track {
    position: relative;
    width: 2.75rem;
    height: 1.5rem;
    background: var(--switch-off);
    border-radius: var(--radius-lg);
    transition: background-color var(--transition-fast);
    flex-shrink: 0;

    &::after {
        content: '';
        position: absolute;
        top: 2px;
        left: 2px;
        width: 1.25rem;
        height: 1.25rem;
        background: var(--switch-knob);
        border-radius: 50%;
        transition: transform var(--transition-fast);
        box-shadow: var(--shadow-sm);
    }
}

.accessibility-controls {
    display: flex;
    flex-direction: column;
}

.text-settings-panel {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-top: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: var(--border-width) solid var(--border-color);
}

.text-setting-control {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.text-setting-label {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--text-primary);
}

.text-setting-control input[type="range"] {
    width: 100%;
    height: 0.375rem;
    border-radius: var(--radius-sm);
    background: var(--bg-secondary);
    -webkit-appearance: none;
    appearance: none;

    &::-webkit-slider-thumb {
        -webkit-appearance: none;
        appearance: none;
        width: 1.125rem;
        height: 1.125rem;
        border-radius: 50%;
        background: var(--primary-color);
        cursor: pointer;
        border: var(--border-width) solid var(--bg-primary);
        box-shadow: var(--shadow-sm);
    }

    &::-moz-range-thumb {
        width: 1.125rem;
        height: 1.125rem;
        border-radius: 50%;
        background: var(--primary-color);
        cursor: pointer;
        border: var(--border-width) solid var(--bg-primary);
        box-shadow: var(--shadow-sm);
    }
}

.text-setting-value {
    font-size: var(--text-xs);
    color: var(--text-secondary);
    text-align: right;
}

.text-setting-presets {
    display: flex;
    gap: var(--spacing-xs);
}

.preset-btn {
    flex: 1;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-secondary);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: var(--text-xs);
    cursor: pointer;
    transition: all var(--transition-fast);

    &[aria-pressed="true"] {
        background: var(--primary-color);
        color: var(--on-primary);
        border-color: var(--primary-color);
    }
}

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: var(--bg-primary);
    border-bottom: var(--border-width) solid var(--border-color);
    z-index: 100;
    backdrop-filter: blur(10px);
    transition: all var(--transition-base);
}

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

.nav-brand {
    text-decoration: none;

    & .nav-brand-name {
        position: relative;
        line-height: 1;

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

    @media (min-width: 769px) {
        &.active .nav-brand-name::after {
            width: 100%;
        }
    }
}

.nav-brand-name {
    font-size: var(--text-xl);
    font-weight: 700;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-xl);
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--text-secondary);
    font-weight: 500;
    padding: var(--spacing-sm) 0;
    position: relative;
    transition: color var(--transition-fast);

    &:is(:hover, :focus, &.active) { color: var(--primary-color); }

    &::after {
        content: '';
        position: absolute;
        bottom: 0;
        left: 0;
        width: 0;
        height: var(--border-width);
        background: var(--primary-color);
        transition: width var(--transition-base);
    }

    &:is(:hover, :focus, &.active)::after { width: 100%; }
}

.nav-actions {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.accessibility-menu-btn {
    background: var(--bg-secondary);
    border: var(--border-width) solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    cursor: pointer;
    font-size: var(--text-sm);
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);

    &:hover {
        transform: translateY(-1px);
        box-shadow: var(--shadow-sm);
    }
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 0.1875rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.hamburger {
    width: 1.5625rem;
    height: 0.1875rem;
    background: var(--text-primary);
    transition: var(--transition-fast);
}

.hero {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: calc(var(--hero-height) - var(--header-height));
    padding: var(--spacing-xl) 0;
    margin-top: var(--header-height);
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;

    &::before { display: none; }
}

.hero-title {
    text-align: center;
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
}

.hero-avatar {
    display: block;
    width: 12.5rem;
    aspect-ratio: 1;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--primary-color);
    box-shadow: var(--shadow-md);
    animation: var(--animation-fade);
    transition: transform var(--transition-base), box-shadow var(--transition-base);

    &:hover {
        transform: scale(1.03);
        box-shadow: var(--shadow-lg);
    }
}

.greeting {
    display: block;
    font-size: var(--text-xl);
    color: var(--text-secondary);
    animation: var(--animation-fade);
}

.name {
    display: block;
    font-size: clamp(var(--text-4xl), 5vw, var(--text-6xl));
    font-weight: 800;
    color: var(--primary-color);
    animation: var(--animation-slide);
}

.role {
    display: block;
    font-size: var(--text-4xl);
    color: var(--text-secondary);
    animation: var(--animation-slide) 0.1s both;
}

.hero-description {
    text-align: center;
    max-width: var(--content-max-width);
    font-size: var(--text-lg);
    color: var(--text-secondary);
    animation: var(--animation-slide) 0.2s both;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
    animation: var(--animation-slide) 0.3s both;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md) var(--spacing-xl);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-fast);
    border: var(--border-width) solid transparent;
    cursor: pointer;
    font-size: var(--text-base);
    min-height: 2.75rem;

    &:hover { transform: translateY(-1px); }
    &:active { transform: translateY(0); }
}

.btn-primary {
    background: var(--primary-color);
    color: var(--on-primary);
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border-color: var(--primary-color);
}

.section {
    padding: var(--spacing-3xl) 0;
    position: relative;
    content-visibility: auto;
    contain-intrinsic-size: 1px 1000px;

    & .container {
        display: flex;
        flex-direction: column;
        gap: var(--spacing-2xl);
    }
}

.section-alt {
    background: var(--bg-secondary);
}

.section-title {
    font-size: clamp(var(--text-3xl), 4vw, var(--text-4xl));
    font-weight: 700;
    text-align: center;
    color: var(--primary-color);
    animation: var(--animation-fade);
}

.timeline {
    position: relative;
    max-width: 50rem;
    margin: 0 auto;
    padding: var(--spacing-xl) 0 var(--spacing-xl) 2.5rem;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);

    &::before {
        content: '';
        position: absolute;
        left: 1.125rem;
        top: 0;
        bottom: 0;
        width: 0.5rem;
        background: linear-gradient(to bottom, transparent 0%, var(--primary-color) 3rem);
        border-radius: 4px;
    }

    &::after {
        content: '';
        position: absolute;
        left: 0.875rem;
        bottom: -0.5rem;
        width: 1rem;
        height: 1rem;
        background: var(--primary-color);
        border-radius: 50%;
    }
}

.timeline-item {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
    animation: var(--animation-slide);
    padding-left: var(--spacing-md);

    &::before {
        content: '';
        position: absolute;
        left: -2rem;
        top: -.125rem;
        width: 1.25rem;
        aspect-ratio: 1;
        background: var(--bg-primary);
        border: 5px solid var(--primary-color);
        border-radius: 50%;
        z-index: 2;
        transition: transform var(--transition-fast);
    }

    &:hover::before {
        transform: scale(1.2);
        border-color: var(--switch-on);
    }
}

.timeline-date {
    font-weight: 700;
    color: var(--primary-color);
    font-size: var(--text-sm);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.timeline-content {
    flex: 1;
    padding: var(--spacing-lg);
    margin-left: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: var(--border-width) solid var(--border-color);
    display: flex;
    min-width: clamp(60ch, 30vw, 80ch);
    flex-direction: column;
    gap: var(--spacing-xs);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);

    &:hover {
        border-color: var(--primary-color);
        box-shadow: var(--shadow-md);
    }
}

.timeline-title {
    font-size: var(--text-lg);
    color: var(--text-primary);
    font-weight: 700;
    line-height: 1;
}

.timeline-company {
    font-size: var(--text-sm);
    color: var(--primary-color);
    font-weight: 400;
    margin-bottom: var(--spacing-sm);
}

.cv-item_link,
.extra-link,
.project-link,
.contact-link {
    text-decoration: underline;
    font-weight: 500;
}

.subtitle {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    font-weight: 400;
}

.missions,
.diploma-details,
.extra-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    list-style: disc;
    padding-left: var(--spacing-lg);
    color: var(--text-secondary);
    font-size: var(--text-sm);
    line-height: 1.7;
    text-align: left;
    margin-top: auto;
    align-self: flex-start;
}

.tech-stack,
.project-tech {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    list-style: none;
}

.tech-tag {
    background: var(--bg-secondary);
    color: var(--text-secondary);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: var(--text-sm);
    border: var(--border-width) solid var(--border-color);
    transition: background-color var(--transition-fast), color var(--transition-fast);

    &:hover {
        background: var(--primary-color);
        color: var(--on-primary);
        border-color: var(--primary-color);
    }
}

.diploma-card,
.project-card,
.talk-card,
.extra-item {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    border: var(--border-width) solid var(--border-color);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.diplomas-grid,
.projects-grid,
.talks-grid,
.extras-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xl);
}

.diploma-card {
    flex: 1 1 300px;
    padding: var(--spacing-xl);
    text-align: center;
    position: relative;
    overflow: hidden;
    animation: var(--animation-fade);
    align-items: center;
    gap: var(--spacing-sm);
}

.diploma-title {
    gap: var(--spacing-sm);
    font-size: var(--text-xl);
    color: var(--text-primary);
}

.diploma-icon {
    font-size: var(--text-5xl);
    animation: var(--animation-float);
}

.diploma-place,
.diploma-date,
.project-date,
.talk-date,
.extra-date {
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.project-card {
    flex: 1 1 350px;
    overflow: hidden;
}

.project-image {
    height: var(--project-image-height);
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.project-placeholder {
    font-size: var(--text-6xl);
    opacity: 0.5;
}

.project-content {
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    flex: 1;
}

.project-title {
    font-size: var(--text-xl);
    color: var(--text-primary);
}

.project-description {
    flex: 1;
    color: var(--text-secondary);
    line-height: 1.6;
}

.project-links {
    display: flex;
    gap: var(--spacing-md);
    justify-content: flex-end;
    margin-top: auto;
}

.project-link { text-align: right; }

/* =====================
   Talks Section
   ===================== */
.talk-card {
    flex: 1 1 300px;
    padding: var(--spacing-xl);
    text-align: center;
    position: relative;
    overflow: hidden;
    animation: var(--animation-fade);
    align-items: center;
    gap: var(--spacing-sm);
}

.talk-icon {
    font-size: var(--text-5xl);
    animation: var(--animation-float);
}

.talk-title {
    font-family: var(--font-heading);
    font-size: var(--text-xl);
    color: var(--text-primary);
}

.talk-date,
.talk-event {
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.talk-description {
    color: var(--text-secondary);
    line-height: 1.6;
    font-size: var(--text-sm);
}

.talk-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    flex: 1;
    align-items: center;
}

.extra-item {
    flex: 1 1 250px;
    padding: var(--spacing-xl);
    text-align: center;
    align-items: center;
    gap: var(--spacing-sm);
}

.extra-title {
    font-size: var(--text-xl);
    color: var(--text-primary);
}

.extra-subtitle {
    font-size: var(--text-sm);
    color: var(--primary-color);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.contact-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    max-width: 37.5rem;
    margin: 0 auto;
}

.contact-intro {
    color: var(--text-secondary);
    line-height: 1.6;
}

.contact-methods {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    list-style: none;
    width: max-content;
    max-width: 100%;
    margin: 0 auto;
    overflow: hidden;
    row-gap: var(--spacing-sm);
}

.contact-method {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: 0 var(--spacing-md);
    box-shadow: -1px 0 0 var(--text-primary);
}

.site-footer {
    background: var(--bg-alt);
    padding: var(--spacing-xl) 0;
    text-align: center;

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

.footer-text {
    color: var(--text-secondary);
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

@keyframes slideInUp {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: var(--spacing-xl);
        border-bottom: var(--border-width) solid var(--border-color);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-base);
        box-shadow: var(--shadow-lg);

        &.active {
            transform: translateY(0);
            opacity: 1;
            visibility: visible;
        }
    }

    .nav-toggle {
        display: flex;

        &.active .hamburger {
            &:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
            &:nth-child(2) { opacity: 0; }
            &:nth-child(3) { transform: rotate(-45deg) translate(7px, -6px); }
        }
    }

    .hero-actions {
        flex-direction: column;
        align-items: center;
    }

    .diplomas-grid,
    .projects-grid,
    .talks-grid,
    .extras-grid {
        flex-direction: column;
    }

    .diploma-card,
    .project-card,
    .talk-card,
    .extra-item {
        flex: 1 1 auto;
        max-width: 100%;
        width: 100%;
    }

    .timeline {
        padding-left: 0;

        &::before, &::after { display: none; }
    }

    .timeline-item {
        padding-left: 0;

        &::before { display: none; }
    }

    .timeline-content {
        min-width: 0;
        margin-left: 0;
    }

    .contact-content {
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .container { padding: 0 var(--container-padding); }
    .section { padding: var(--spacing-2xl) 0; }
    .timeline-item { padding-left: 1.75rem; }
    .timeline::before { left: 1rem; }
    .timeline::after { left: 0.75rem; }

    .diploma-card,
    .project-content,
    .extra-item,
    .contact-form {
        padding: var(--spacing-lg);
    }
}

@media print {
    .accessibility-controls,
    .nav-toggle,
    .contact-form {
        display: none;
    }

    .site-header { position: static; }
    .hero { min-height: auto; padding: var(--spacing-xl) 0; }

    .section {
        padding: var(--spacing-xl) 0;
        page-break-inside: avoid;
    }

    :is(.timeline-item, .diploma-card, .project-card, .extra-item) {
        page-break-inside: avoid;
    }
}

@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;
    }
}

@media (prefers-contrast: more) {
    :root {
        --border-color: #000000;
        --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.2);
        --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.3);
        --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4);
    }
}