@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Merriweather:wght@400;700&display=swap');

:root {
    --primary-color: #2563eb;
    --primary-color-fallback: #0066cc;
    --secondary-color: #10b981;
    --secondary-color-fallback: #009966;
    --text-primary: #1f2937;
    --text-primary-fallback: #333333;
    --text-secondary: #6b7280;
    --text-secondary-fallback: #666666;
    --bg-primary: #ffffff;
    --bg-primary-fallback: #fff;
    --bg-secondary: #f5f5f5;
    --bg-secondary-fallback: #f0f0f0;
    --border-color: #e5e7eb;
    --border-color-fallback: #cccccc;
    --accent-color-mixed: color-mix(in srgb, var(--primary-color) 80%, var(--secondary-color) 20%);
    --hover-bg-mixed: color-mix(in srgb, var(--bg-secondary) 90%, var(--primary-color) 10%);
    --spacing-xs: 0.5rem;
    --spacing-xs-fallback: 8px;
    --spacing-sm: 1rem;
    --spacing-sm-fallback: 16px;
    --spacing-md: 1.5rem;
    --spacing-md-fallback: 24px;
    --spacing-lg: 2rem;
    --spacing-lg-fallback: 32px;
    --spacing-xl: 3rem;
    --spacing-xl-fallback: 48px;
    --border-radius-sm: 4px;
    --border-radius-sm-fallback: 4px;
    --border-radius-md: 8px;
    --border-radius-md-fallback: 8px;
    --border-radius-lg: 12px;
    --border-radius-lg-fallback: 12px;
    --font-size-base: 1rem;
    --font-size-base-fallback: 16px;
    --font-size-lg: 1.25rem;
    --font-size-lg-fallback: 20px;
    --font-size-xl: 1.5rem;
    --font-size-xl-fallback: 24px;
    --animation-duration: 0.3s;
    --animation-timing: ease-in-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(1rem);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideIn {
    from {
        transform: translateX(-2rem);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes scaleIn {
    from {
        transform: scale(0.95);
        opacity: 0;
    }
    to {
        transform: scale(1);
        opacity: 1;
    }
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scrollbar-width: none;
    scrollbar-color: var(--primary-color, var(--primary-color-fallback)) var(--bg-secondary, var(--bg-secondary-fallback));
}

html {
    overflow-x: hidden;
    width: 100%;
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100dvh;
    width: 100%;
    max-width: 100dvw;
    overflow-x: hidden;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--text-primary, var(--text-primary-fallback));
    background-color: var(--bg-primary, var(--bg-primary-fallback));
    font-size: 100%;
    animation: fadeIn 0.6s var(--animation-timing);
}

nav {
    display: flex;
    justify-content: center;
    padding: var(--spacing-sm, var(--spacing-sm-fallback));
    background-color: var(--bg-secondary, var(--bg-secondary-fallback));
    width: 100%;
    max-width: 100dvw;
    position: relative;
    
    input.menu-toggle {
        display: none;
    }
    
    label.menu-toggle {
        display: none;
        flex-direction: column;
        gap: 0.25rem;
        background: none;
        border: none;
        cursor: pointer;
        padding: var(--spacing-xs, var(--spacing-xs-fallback));
        position: absolute;
        left: var(--spacing-sm, var(--spacing-sm-fallback));
        top: 50%;
        transform: translateY(-50%);
        z-index: 1001;
        
        span {
            display: block;
            width: 1.5rem;
            height: 0.1875rem;
            background-color: var(--text-primary, var(--text-primary-fallback));
            transition: all 0.3s ease;
            border-radius: 0.125rem;
        }
        
        &:hover span {
            background-color: var(--primary-color, var(--primary-color-fallback));
        }
    }
    
    ul {
        display: flex;
        flex-wrap: wrap;
        list-style: none;
        gap: var(--spacing-md, var(--spacing-md-fallback));
        transition: all 0.3s ease;
        
        li {
            display: flex;
        }
        
        a {
            text-decoration: none;
            color: var(--text-primary, var(--text-primary-fallback));
            padding: var(--spacing-xs, var(--spacing-xs-fallback)) var(--spacing-sm, var(--spacing-sm-fallback));
            transition: color var(--animation-duration) ease, transform 0.2s ease, background-color 0.2s ease;
            border-radius: var(--border-radius-sm, var(--border-radius-sm-fallback));
            position: relative;
            touch-action: manipulation;
            
            &:hover {
                color: var(--primary-color, var(--primary-color-fallback));
                background-color: var(--hover-bg-mixed, var(--bg-secondary));
                transform: translateY(-0.125rem);
            }
            
            &:active {
                transform: scale(0.95);
            }
        }
    }
    
    input.menu-toggle:checked ~ ul {
        display: flex !important;
    }
    
    input.menu-toggle:checked ~ label.menu-toggle span:nth-child(1) {
        transform: rotate(45deg) translate(0.3rem, 0.3rem);
    }
    
    input.menu-toggle:checked ~ label.menu-toggle span:nth-child(2) {
        opacity: 0;
    }
    
    input.menu-toggle:checked ~ label.menu-toggle span:nth-child(3) {
        transform: rotate(-45deg) translate(0.3rem, -0.3rem);
    }
}

header {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: var(--spacing-lg, var(--spacing-lg-fallback)) var(--spacing-sm, var(--spacing-sm-fallback));
    text-align: center;
    font-family: 'Merriweather', Georgia, 'Times New Roman', serif;
    width: 100%;
    animation: fadeIn 0.8s var(--animation-timing);
    
    h1 {
        margin-bottom: var(--spacing-sm, var(--spacing-sm-fallback));
        font-size: var(--font-size-xl, var(--font-size-xl-fallback));
        color: var(--text-primary, var(--text-primary-fallback));
        line-height: 1.2em;
    }
    
    picture {
        display: flex;
        justify-content: center;
        width: auto;
    }
    
    img {
        display: block;
        border-radius: var(--border-radius-lg, var(--border-radius-lg-fallback));
        width: 200px;
        height: 200px;
        max-width: 30dvw;
        max-height: 30dvh;
        object-fit: cover;
        object-position: center;
        transition: transform 0.3s ease, box-shadow 0.3s ease;
        animation: scaleIn 0.6s var(--animation-timing);
        filter: brightness(1);
        
        &:hover {
            transform: scale(1.05) rotate(2deg);
            box-shadow: 0 0.5rem 1.5rem rgba(0, 0, 0, 0.2);
            filter: brightness(1.05);
        }
    }
}

main {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg, var(--spacing-lg-fallback));
    padding: var(--spacing-lg, var(--spacing-lg-fallback));
    flex: 1;
    max-width: min(1200px, 90dvw);
    margin: 0 auto;
    width: 100%;
    
    > div:first-child {
        display: grid;
        justify-content: center;
        animation: fadeIn 0.8s var(--animation-timing);
    }
    
    ol {
        display: grid;
        gap: var(--spacing-md, var(--spacing-md-fallback));
        list-style-position: inside;
        
        li {
            display: grid;
            gap: var(--spacing-xs, var(--spacing-xs-fallback));
            animation: slideIn 0.5s var(--animation-timing);
            animation-fill-mode: both;
            
            &:nth-child(1) { animation-delay: 0.1s; }
            &:nth-child(2) { animation-delay: 0.2s; }
            &:nth-child(3) { animation-delay: 0.3s; }
            &:nth-child(4) { animation-delay: 0.4s; }
            &:nth-child(5) { animation-delay: 0.5s; }
            &:nth-child(6) { animation-delay: 0.6s; }
            &:nth-child(7) { animation-delay: 0.7s; }
            &:nth-child(8) { animation-delay: 0.8s; }
            &:nth-child(9) { animation-delay: 0.9s; }
            &:nth-child(10) { animation-delay: 1.0s; }
        }
    }
    
    section {
        display: grid;
        gap: var(--spacing-sm, var(--spacing-sm-fallback));
        padding: var(--spacing-md, var(--spacing-md-fallback));
        border: 1px solid var(--border-color, var(--border-color-fallback));
        border-radius: var(--border-radius-md, var(--border-radius-md-fallback));
        transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
        
        &:not(:first-child) {
            animation: fadeIn 0.6s var(--animation-timing);
        }
        
        article {
            display: grid;
            gap: var(--spacing-xs, var(--spacing-xs-fallback));
        }
        
        h2 {
            transition: color 0.3s ease;
        }
        
        &:hover {
            transform: translateY(-0.25rem);
            box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.1);
            border-color: var(--primary-color, var(--primary-color-fallback));
            
            h2 {
                color: var(--primary-color, var(--primary-color-fallback));
            }
        }
        
        img {
            border-radius: var(--border-radius-md, var(--border-radius-md-fallback));
        }
    }
    
    ol > li > section {
        display: grid;
        gap: var(--spacing-sm, var(--spacing-sm-fallback));
        padding: var(--spacing-md, var(--spacing-md-fallback));
        border-left: 4px solid var(--primary-color, var(--primary-color-fallback));
        transition: transform 0.3s ease, padding-left 0.3s ease;
        
        &:hover {
            transform: translateX(0.5rem);
            padding-left: calc(var(--spacing-md, var(--spacing-md-fallback)) + 0.25rem);
        }
    }
}

main:has(section:hover) {
    section:not(:hover) {
        opacity: 0.85;
        transition: opacity 0.3s ease;
    }
}

main section:has(h2:hover) {
    border-color: color-mix(in srgb, var(--primary-color) 70%, var(--secondary-color) 30%);
    background-color: color-mix(in srgb, var(--bg-primary) 98%, var(--primary-color) 2%);
}

header:has(img:hover) img {
    filter: brightness(1.1) contrast(1.05);
}

nav:has(a:hover) ul a:not(:hover) {
    opacity: 0.7;
}

footer {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-md, var(--spacing-md-fallback));
    background-color: var(--bg-secondary, var(--bg-secondary-fallback));
    margin-top: auto;
    width: 100%;
    font-size: 0.875em;
}

form {
    display: grid;
    gap: var(--spacing-sm, var(--spacing-sm-fallback));
    max-width: min(600px, 90dvw);
    margin: 0 auto;
    animation: fadeIn 0.6s var(--animation-timing);
    
    fieldset {
        padding: var(--spacing-md, var(--spacing-md-fallback));
        border: 2px solid var(--border-color, var(--border-color-fallback));
        border-radius: var(--border-radius-md, var(--border-radius-md-fallback));
        transition: border-color 0.3s ease, box-shadow 0.3s ease;
        
        &:focus-within {
            border-color: var(--primary-color, var(--primary-color-fallback));
            box-shadow: 0 0 0 0.125rem rgba(37, 99, 235, 0.1);
        }
        
        label {
            display: grid;
            gap: var(--spacing-xs, var(--spacing-xs-fallback));
            font-size: 0.9375em;
        }
        
        input,
        textarea {
            padding: var(--spacing-xs, var(--spacing-xs-fallback));
            border: 1px solid var(--border-color, var(--border-color-fallback));
            border-radius: var(--border-radius-sm, var(--border-radius-sm-fallback));
            font-size: 1em;
            transition: border-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
            
            &:focus {
                outline: none;
                border-color: var(--primary-color, var(--primary-color-fallback));
                transform: scale(1.01);
                box-shadow: 0 0 0 0.125rem rgba(37, 99, 235, 0.15);
            }
        }
        
        button {
            padding: var(--spacing-xs, var(--spacing-xs-fallback)) var(--spacing-sm, var(--spacing-sm-fallback));
            background-color: var(--accent-color-mixed, var(--primary-color));
            color: white;
            border: none;
            border-radius: var(--border-radius-sm, var(--border-radius-sm-fallback));
            cursor: pointer;
            font-size: var(--font-size-base, var(--font-size-base-fallback));
            transition: background-color 0.3s ease, transform 0.2s ease, box-shadow 0.3s ease;
            touch-action: manipulation;
            min-height: 2.75rem;
            
            &:hover {
                background-color: color-mix(in srgb, var(--primary-color) 90%, black 10%);
                transform: translateY(-0.125rem);
                box-shadow: 0 0.25rem 0.5rem rgba(37, 99, 235, 0.3);
            }
            
            &:active {
                transform: scale(0.98);
            }
        }
    }
}

form:has(input:invalid) fieldset {
    border-color: color-mix(in srgb, red 30%, var(--border-color) 70%);
}

form:has(input:valid) fieldset {
    border-color: color-mix(in srgb, var(--secondary-color) 40%, var(--border-color) 60%);
}

fieldset:has(input:focus) {
    background-color: color-mix(in srgb, var(--bg-primary) 95%, var(--primary-color) 5%);
}

profile-card {
    border: 8px solid var(--text-primary, var(--text-primary-fallback));
    padding: var(--spacing-md, var(--spacing-md-fallback));
    display: grid;
    gap: var(--spacing-sm, var(--spacing-sm-fallback));
    text-align: center;
    max-width: min(300px, 80dvw);
    transition: transform 0.3s ease, border-color 0.3s ease;
    
    picture {
        display: flex;
        justify-content: center;
        width: auto;
    }
    
    img {
        width: 200px;
        height: 200px;
        object-fit: cover;
        object-position: center;
    }
    
    &:hover {
        transform: scale(1.05) rotate(-1deg);
        border-color: var(--primary-color, var(--primary-color-fallback));
    }
}

h1, h2, h3 {
    font-family: 'Merriweather', Georgia, 'Times New Roman', serif;
    color: var(--text-primary, var(--text-primary-fallback));
    line-height: 1.3em;
}

h2 {
    font-size: var(--font-size-lg, var(--font-size-lg-fallback));
    margin-bottom: 0.5em;
}

h3 {
    font-size: 1.125em;
    margin-bottom: 0.5em;
}

p, span {
    font-size: var(--font-size-base, var(--font-size-base-fallback));
    line-height: 1.6em;
    max-width: 75ch;
}

li {
    font-size: var(--font-size-base, var(--font-size-base-fallback));
    line-height: 1.6em;
}

img {
    max-width: 100%;
    height: auto;
    object-fit: cover;
    object-position: center;
    display: block;
    filter: brightness(1);
    transition: filter 0.3s ease;
    
    &:hover {
        filter: brightness(1.05);
    }
}

picture {
    display: block;
    width: 100%;
}

iframe {
    max-width: 100%;
    width: 100%;
    height: auto;
    min-height: 300px;
    border: none;
    border-radius: var(--border-radius-md, var(--border-radius-md-fallback));
}

section div:has(iframe) {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    
    iframe {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        min-height: auto;
    }
}

figure {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md, var(--spacing-md-fallback));
    margin: var(--spacing-md, var(--spacing-md-fallback)) 0;
    padding: var(--spacing-md, var(--spacing-md-fallback));
    background-color: var(--bg-secondary, var(--bg-secondary-fallback));
    border-radius: var(--border-radius-md, var(--border-radius-md-fallback));
}

figure picture {
    display: block;
    width: 100%;
}

figure img {
    width: 100%;
    height: auto;
    border-radius: var(--border-radius-md, var(--border-radius-md-fallback));
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    
    &:hover {
        transform: scale(1.02);
        box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    }
}

@media (max-width: 480px) {
    body {
        font-size: 90%;
    }
    
    nav {
        padding: var(--spacing-xs, var(--spacing-xs-fallback));
        justify-content: space-between;
        align-items: center;
        
        label.menu-toggle {
            display: flex;
        }
        
        ul {
            position: absolute;
            top: 100%;
            left: 0;
            right: 0;
            flex-direction: column;
            align-items: stretch;
            gap: 0;
            width: 100%;
            background-color: var(--bg-secondary, var(--bg-secondary-fallback));
            padding: var(--spacing-xs, var(--spacing-xs-fallback));
            box-shadow: 0 0.25rem 0.5rem rgba(0, 0, 0, 0.1);
            display: none;
            z-index: 1000;
            
            li {
                width: 100%;
                justify-content: stretch;
            }
            
            a {
                display: block;
                width: 100%;
                text-align: center;
                padding: var(--spacing-sm, var(--spacing-sm-fallback));
                min-height: 2.75rem;
                display: flex;
                align-items: center;
                justify-content: center;
            }
        }
        
        input.menu-toggle:checked ~ ul {
            display: flex;
        }
        
        input.menu-toggle:checked ~ label.menu-toggle span:nth-child(1) {
            transform: rotate(45deg) translate(0.3rem, 0.3rem);
        }
        
        input.menu-toggle:checked ~ label.menu-toggle span:nth-child(2) {
            opacity: 0;
        }
        
        input.menu-toggle:checked ~ label.menu-toggle span:nth-child(3) {
            transform: rotate(-45deg) translate(0.3rem, -0.3rem);
        }
    }
    
    header {
        padding: var(--spacing-sm, var(--spacing-sm-fallback));
        
        h1 {
            font-size: 1.5em;
            margin-bottom: var(--spacing-xs, var(--spacing-xs-fallback));
        }
        
        img {
            width: 150px;
            height: 150px;
            max-width: 80dvw;
            max-height: 40dvh;
        }
    }
    
    main {
        padding: var(--spacing-sm, var(--spacing-sm-fallback));
        gap: var(--spacing-md, var(--spacing-md-fallback));
        
        section {
            padding: var(--spacing-sm, var(--spacing-sm-fallback));
        }
    }
    
    profile-card {
        max-width: 100%;
        padding: var(--spacing-sm, var(--spacing-sm-fallback));
        
        img {
            width: 150px;
            height: 150px;
            margin: 0 auto;
        }
    }
    
    form {
        max-width: 100%;
        
        fieldset {
            padding: var(--spacing-sm, var(--spacing-sm-fallback));
        }
    }
    
    iframe {
        min-height: 250px;
        width: 100%;
    }
    
    main ol > li > section {
        padding: var(--spacing-sm, var(--spacing-sm-fallback));
        border-left-width: 3px;
    }
}

@media (pointer: coarse) {
    nav a,
    button,
    fieldset button {
        min-height: 2.75rem;
        padding: var(--spacing-sm, var(--spacing-sm-fallback)) var(--spacing-md, var(--spacing-md-fallback));
    }
    
    nav ul {
        gap: var(--spacing-sm, var(--spacing-sm-fallback));
    }
}

@media (pointer: fine) {
    nav a {
        min-height: auto;
        
        &:hover {
            background-color: var(--hover-bg-mixed, var(--bg-secondary));
        }
    }
    
    main section:hover {
        cursor: pointer;
    }
}

@media (min-width: 768px) and (max-width: 1023px) {
    main {
        gap: var(--spacing-lg, var(--spacing-lg-fallback));
        padding: var(--spacing-lg, var(--spacing-lg-fallback));
        
        section {
            padding: var(--spacing-md, var(--spacing-md-fallback));
        }
    }
    
    body {
        font-size: 100%;
    }
    
    nav {
        ul {
            gap: var(--spacing-md, var(--spacing-md-fallback));
            
            a {
                padding: var(--spacing-xs, var(--spacing-xs-fallback)) var(--spacing-md, var(--spacing-md-fallback));
                min-height: 2.5rem;
                touch-action: manipulation;
            }
        }
        
        label.menu-toggle {
            display: none;
        }
    }
    
    header {
        padding: calc(var(--spacing-lg, var(--spacing-lg-fallback)) * 1.25) var(--spacing-sm, var(--spacing-sm-fallback));
        
        img {
            width: 220px;
            height: 220px;
            max-width: 35dvw;
            max-height: 35dvh;
        }
    }
    
    profile-card {
        max-width: min(350px, 70dvw);
        
        img {
            width: 220px;
            height: 220px;
        }
    }
    
    form {
        max-width: min(700px, 85dvw);
        
        fieldset {
            padding: var(--spacing-md, var(--spacing-md-fallback));
        }
        
        button {
            min-height: 3rem;
            font-size: 1.0625em;
        }
    }
    
    iframe {
        min-height: 400px;
    }
    
    main section:hover {
        transform: translateY(-0.375rem);
        box-shadow: 0 0.75rem 1.5rem rgba(0, 0, 0, 0.12);
    }
}

@media (min-width: 1024px) {
    main {
        gap: var(--spacing-xl, var(--spacing-xl-fallback));
        padding: var(--spacing-xl, var(--spacing-xl-fallback));
        max-width: min(1400px, 95dvw);
        
        section {
            padding: var(--spacing-lg, var(--spacing-lg-fallback));
            transition: all 0.3s ease;
        }
        
        section:hover {
            transform: translateY(-0.5rem);
            box-shadow: 0 1rem 2rem rgba(0, 0, 0, 0.15);
        }
    }
    
    nav {
        padding: var(--spacing-md, var(--spacing-md-fallback));
        
        ul {
            gap: var(--spacing-lg, var(--spacing-lg-fallback));
            
            a {
                padding: var(--spacing-sm, var(--spacing-sm-fallback)) var(--spacing-md, var(--spacing-md-fallback));
                font-size: 1.0625em;
                
                &:hover {
                    background-color: var(--hover-bg-mixed, var(--bg-secondary));
                }
            }
        }
        
        label.menu-toggle {
            display: none;
        }
    }
    
    body {
        font-size: 100%;
        line-height: 1.7;
    }
    
    header {
        padding: calc(var(--spacing-xl, var(--spacing-xl-fallback)) * 1.2) var(--spacing-md, var(--spacing-md-fallback));
        
        h1 {
            font-size: calc(var(--font-size-xl, var(--font-size-xl-fallback)) * 1.2);
        }
        
        img {
            width: 250px;
            height: 250px;
            max-width: 25dvw;
            max-height: 30dvh;
        }
    }
    
    profile-card {
        max-width: min(400px, 60dvw);
        padding: var(--spacing-lg, var(--spacing-lg-fallback));
        
        img {
            width: 250px;
            height: 250px;
        }
    }
    
    form {
        max-width: min(800px, 80dvw);
        
        fieldset {
            padding: var(--spacing-lg, var(--spacing-lg-fallback));
        }
        
        button {
            min-height: 3.25rem;
            font-size: 1.125em;
            padding: var(--spacing-sm, var(--spacing-sm-fallback)) var(--spacing-md, var(--spacing-md-fallback));
        }
    }
    
    iframe {
        min-height: 500px;
    }
    
    h2 {
        font-size: calc(var(--font-size-lg, var(--font-size-lg-fallback)) * 1.15);
    }
    
    p, span {
        font-size: 1.0625em;
        max-width: 80ch;
    }
    
    li {
        font-size: 1.0625em;
    }
    
    footer {
        padding: var(--spacing-lg, var(--spacing-lg-fallback));
        font-size: 1em;
    }
}