:root {
    --primary: #8b5cf6;
    --primary-dark: #7c3aed;
    --secondary: #0284c7;
    --text: #1e293b;
    --text-secondary: #64748b;
    --bg: #f1f5f9;
    --card-bg: #ffffff;
    --card-border: #e2e8f0;
    --success: #059669;
    --warning: #d97706;
    --info: #2563eb;
    --danger: #dc2626;
    --youtube-red: #d50000;
    --youtube-red-bg: rgba(213, 0, 0, 0.08);

    --easing-bounce: cubic-bezier(0.175, 0.885, 0.32, 1.275);
    --easing-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --easing-out-circ: cubic-bezier(0.075, 0.82, 0.165, 1);
    --transition-smooth: all 0.3s var(--easing-out-circ);

    --header-bg: rgba(255, 255, 255, 0.4);
    --content-group-bg: rgba(255, 255, 255, 0.6);
    --card-bg-alpha: rgba(241, 245, 249, 0.3);

    --shadow-sm: 0 3px 6px rgba(0,0,0,0.07);
    --shadow-md: 0 8px 20px rgba(0,0,0,0.1);
    --shadow-lg: 0 15px 30px rgba(0,0,0,0.1);
    --hover-lift-amount: -6px;
    --transition-lift: transform 0.3s var(--easing-out-circ), box-shadow 0.3s var(--easing-out-circ);

    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-md: 1.125rem;
    --font-size-lg: 1.25rem;
    --font-size-xl: 1.5rem;
    --font-size-xxl: 2.25rem;
}

[data-theme="dark"] {
    --primary: #7c4dff;
    --primary-dark: #651fff;
    --secondary: #0ea5e9;
    --text: #e2e8f0;
    --text-secondary: #94a3b8;
    --bg: #0f172a;
    --card-bg: #1e293b;
    --card-border: #334155;
    --success: #10b981;
    --warning: #f59e0b;
    --info: #3b82f6;
    --danger: #ef4444;
    --youtube-red: #ff1744;
    --youtube-red-bg: rgba(255, 23, 68, 0.1);

    --header-bg: rgba(30, 41, 59, 0.25);
    --content-group-bg: rgba(0, 0, 0, 0.15);
    --card-bg-alpha: rgba(30, 41, 59, 0.1);

    --shadow-sm: 0 3px 6px rgba(0,0,0,0.1);
    --shadow-md: 0 8px 20px rgba(0,0,0,0.15);
    --shadow-lg: 0 15px 30px rgba(0,0,0,0.15);
}

*:focus-visible {
    outline: none;
    border-radius: inherit;
    transition: box-shadow 0.25s var(--easing-out-circ);
    box-shadow: 0 0 0 3px var(--bg), 0 0 0 5px var(--focus-color, currentColor);
}

body:focus-visible { box-shadow: none; }

.project-card:focus-visible,
.contact-card:focus-visible,
.support-item:focus-visible,
.custom-checkbox input:focus-visible + .checkbox-visual,
.skill:focus-visible,
.interest-badge:focus-visible {
    box-shadow: 0 0 0 3px var(--card-bg), 0 0 0 5px var(--focus-color, currentColor);
}

.material-icons, .material-icons-outlined {
    vertical-align: middle;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg);
    color: var(--text);
    margin: 0;
    padding: 20px;
    font-size: var(--font-size-base);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
    position: relative;
    overflow-x: hidden;
    user-select: none;
    -webkit-tap-highlight-color: transparent;
}

button {
    padding: 0;
    border: none;
    background: none;
    color: inherit;
    font: inherit;
    text-align: left;
    cursor: pointer;
}

::-webkit-scrollbar {
    width: 12px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background-color: var(--card-border);
    border-radius: 20px;
    border: 3px solid var(--bg);
}

::-webkit-scrollbar-thumb:hover {
    background-color: var(--primary);
}

h1, h2, h3, p, .contact-value, .project-desc, .specialization-desc, .about-paragraph, .secondary-edu-text, .info-item span {
    user-select: text;
}

p {
    margin-top: 0;
    margin-bottom: 1rem;
}
p:last-child {
    margin-bottom: 0;
}

body::before,
body::after {
    content: '';
    position: fixed;
    width: 60vmin;
    height: 60vmin;
    border-radius: 50%;
    filter: blur(12vmin);
    z-index: -1;
    animation: move-blob 25s infinite alternate;
    transition: background 0.5s ease;
}

body::before {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    top: -15%;
    left: -15%;
    animation-direction: alternate-reverse;
}

body::after {
    background: linear-gradient(135deg, var(--primary-dark), var(--warning));
    bottom: -15%;
    right: -15%;
    animation-delay: -12s;
}

@keyframes move-blob {
    0% { transform: translate(0, 0) scale(1) rotate(0deg); }
    33% { transform: translate(15vw, -10vh) scale(1.2) rotate(120deg); }
    66% { transform: translate(-10vw, 15vh) scale(0.9) rotate(240deg); }
    100% { transform: translate(0, 0) scale(1) rotate(360deg); }
}

.container {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

header {
    background: var(--header-bg);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    padding: 20px 20px 30px;
    text-align: center;
    border-radius: 12px;
    position: relative;
    overflow: hidden;
    border: 1px solid var(--card-border);
    margin-bottom: 20px;
}

header::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    opacity: 0.3;
    z-index: -1;
}

[data-theme="dark"] header::before { opacity: 0.2; }

h1 {
    margin: 0;
    font-weight: 700;
    font-size: var(--font-size-xxl);
    line-height: 1.2;
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
    margin-top: 30px;
}

.subtitle {
    opacity: 0.92;
    font-size: var(--font-size-md);
    margin: 0.5rem 0 0;
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.name-subtitle {
    opacity: 0.85;
    font-size: var(--font-size-base);
    margin: 0.25rem 0 0;
    text-shadow: 0 1px 2px rgba(0,0,0,0.2);
}

.content {
    padding: 20px;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border-radius: 12px;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.2);
    border: 1px solid var(--card-border);
    transition: background-color 0.3s ease;
}

[data-theme="dark"] .content {
    background: rgba(30, 41, 59, 0.4);
}

section { margin-bottom: 40px; }
section:last-child { margin-bottom: 0; }

.section-title {
    display: inline-block;
    color: var(--text);
    font-size: var(--font-size-xl);
    line-height: 1.3;
    position: relative;
    padding-bottom: 8px;
    margin-bottom: 20px;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 3px;
    transition: width 0.8s var(--easing-smooth);
}

.section-title.is-visible::after { width: 100%; }

.skills-container {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

.skill {
    padding: 8px 15px;
    border-radius: 8px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: var(--font-size-base);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-lift);
    text-decoration: none;
    color: white;
    will-change: transform, box-shadow;
}

.skill:hover {
    transform: translateY(var(--hover-lift-amount));
    box-shadow: var(--shadow-md);
}

.skill-cpp { background: #00599c; color: white; --focus-color: #00599c; }
.skill-csharp { background: #68217a; color: white; --focus-color: #68217a; }
.skill-java { background: #5382a1; color: #f0f0f0; --focus-color: #5382a1; }
.skill-python { background: #3776ab; color: #f0f0f0; --focus-color: #3776ab; }
.skill-sql { background: #007bff; color: white; --focus-color: #007bff; }
.skill-fl { background: #e67e22; color: white; --focus-color: #e67e22; }
.skill-unity { background: #222c37; color: white; --focus-color: #222c37; }
.skill-unreal { background: #000000; color: white; --focus-color: #888888; }
.skill-android { background: #3ddc84; color: #0c3b2e; --focus-color: #3ddc84; }
.skill-davinci { background: #0a0a2a; color: white; --focus-color: #4b4b6a; }
.skill-ai { background: #8e44ad; color: white; --focus-color: #8e44ad; }

.project-list { margin-top: 20px; }

.project-card {
    background: var(--card-bg-alpha);
    border-radius: 12px;
    border: 1px solid var(--card-border);
    position: relative;
    padding: 15px;
    box-shadow: 0 3px 6px rgba(0,0,0,0.05);
    transition: var(--transition-lift);
    min-height: 160px;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: inherit;
    will-change: transform, box-shadow;
}

.project-list .project-card:not(:first-child) { margin-top: 20px; }

.project-card:hover {
    transform: translateY(var(--hover-lift-amount));
    box-shadow: var(--shadow-lg);
}

.project-header {
    flex-grow: 1;
}

.project-title-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.project-title {
    margin: 0;
    font-size: var(--font-size-lg);
    color: var(--text);
    position: relative;
    display: inline-block;
    line-height: 1.3;
}

.project-title::after {
    content: '';
    position: absolute;
    bottom: -3px;
    left: 0;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    transition: width 0.4s var(--easing-smooth);
}

.project-card:hover .project-title::after { width: 100%; }

.platform-icon {
    width: 18px;
    height: 18px;
    fill: var(--text-secondary);
    opacity: 0.7;
    transition: fill 0.3s ease, opacity 0.3s ease;
    flex-shrink: 0;
}

.project-card:hover .platform-icon--gamejolt {
    fill: #ccff00;
    opacity: 1;
}

.project-card:hover .platform-icon--itchio {
    fill: #fa5c5c;
    opacity: 1;
}

.project-desc {
    color: var(--text-secondary);
    font-style: italic;
    font-size: var(--font-size-base);
}

.project-meta {
    margin-top: 12px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
}

.project-jam-info {
    color: var(--text-secondary);
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: var(--font-size-sm);
}
.jam-link {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    transition: background-color 0.3s ease, color 0.3s ease;
    padding: 4px 10px;
    border-radius: 16px;
    background-color: rgba(124, 77, 255, 0.15);
}
.jam-link:hover {
    background-color: rgba(124, 77, 255, 0.3);
    color: var(--primary-dark);
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
}

.footer-group-left {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.status-badge {
    padding: 5px 10px;
    border-radius: 20px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 5px;
    font-size: var(--font-size-sm);
    cursor: default;
}
.status-badge--completed { background: rgba(16, 185, 129, 0.1); color: var(--success); }
.status-badge--in-progress { background: rgba(245, 158, 11, 0.1); color: var(--warning); }
.status-badge--ready { background: rgba(59, 130, 246, 0.1); color: var(--info); }

.awards-container {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    position: absolute;
    top: 15px;
    right: 15px;
}

.award-badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-weight: 500;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 5px;
    background: rgba(16, 185, 129, 0.1);
    color: var(--success);
    cursor: pointer;
    transition: transform 0.3s var(--easing-out-circ);
}
.award-badge:hover { transform: scale(1.05); }

.achievement-badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-weight: 600;
    align-items: center;
    gap: 5px;
    font-size: var(--font-size-sm);
    margin-top: 8px;
    margin-right: 10px;
    display: inline-flex;
    cursor: default;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
.achievement-badge--first-place { background: rgba(59, 130, 246, 0.1); color: var(--info); }
.achievement-badge--defense { background: rgba(14, 165, 233, 0.1); color: var(--secondary); }

.specialization-desc {
    color: var(--text-secondary);
    margin-top: 15px;
    font-size: var(--font-size-base);
}

.header-actions {
    position: absolute;
    top: 20px;
    right: 20px;
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--header-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--card-border);
    border-radius: 25px;
    padding: 5px;
    transition: var(--transition-smooth);
    box-shadow: var(--shadow-sm);
}

.header-action-btn {
    position: relative;
    background: transparent;
    border: none;
    width: 38px;
    height: 38px;
    border-radius: 50%;
    padding: 0;
    cursor: pointer;
    display: grid;
    place-items: center;
    transition: background-color 0.2s ease, color 0.2s ease;
    color: var(--text);
}

.header-action-btn:hover {
    background: var(--primary);
    color: white;
}

[data-theme="dark"] .header-action-btn { color: var(--text-secondary); }

.header-action-btn .material-icons-outlined {
    grid-area: 1 / 1;
    transition: opacity 0.3s ease, color 0.3s ease;
    font-size: 22px;
}

.sun-icon { opacity: 1; }
.moon-icon { opacity: 0; }
[data-theme="dark"] .sun-icon { opacity: 0; }
[data-theme="dark"] .moon-icon { opacity: 1; }

.github-badge {
    background: rgba(14, 165, 233, 0.1);
    color: var(--secondary);
    padding: 4px 10px;
    border-radius: 20px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    text-decoration: none;
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: transform 0.3s var(--easing-out-circ);
}
.github-badge:hover { transform: scale(1.05); }
.github-badge svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

a { text-decoration: none; color: inherit; }

.content-group {
    background: var(--content-group-bg);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 20px;
    transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.5s var(--easing-out-circ);
}

.content-divider {
    height: 1px;
    background: var(--card-border);
    margin: 25px 0;
    opacity: 0.5;
}

.group-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: 0;
    padding-bottom: 8px;
    display: inline-block;
    color: var(--text);
}

.subgroup {
    margin-top: 10px;
}

.subgroup:first-of-type {
    margin-top: 20px;
}

.subgroup-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 15px;
    padding-bottom: 8px;
    border-bottom: 1px solid var(--card-border);
}

.tech-badge {
    padding: 5px 12px;
    border-radius: 20px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: var(--font-size-sm);
    cursor: default;
}
.python-tech { background: rgba(55, 118, 171, 0.1); color: #3776ab; }
[data-theme="dark"] .python-tech { background: rgba(55, 118, 171, 0.15); color: #4B8BBE; }
.csharp-tech { background: rgba(100, 50, 150, 0.1); color: #643296; }
[data-theme="dark"] .csharp-tech { background: rgba(100, 50, 150, 0.15); color: #7D40B3; }
.lts-badge {
    background: rgba(14, 165, 233, 0.1);
    color: var(--secondary);
}

.course-container {
    margin-top: 15px;
    border-top: 1px solid var(--card-border);
    padding-top: 15px;
}

.course-item {
    margin-bottom: 15px;
    padding-bottom: 10px;
    position: relative;
}
.course-item:not(:last-child) { border-bottom: 1px dashed var(--card-border); }

.course-status {
    padding: 4px 10px;
    border-radius: 20px;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-size: var(--font-size-sm);
    margin-top: 5px;
    position: absolute;
    bottom: 5px;
    right: 0;
    transition: background-color 0.3s ease, color 0.3s ease;
    cursor: default;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}
.course-status--completed { background: rgba(16, 185, 129, 0.1); color: var(--success); }
.course-status--in-progress { background: rgba(245, 158, 11, 0.1); color: var(--warning); }

.course-achievements {
    margin-top: 10px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.interests-container {
    position: relative;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 15px;
    min-height: 80px;
}

.interest-badge {
    padding: 8px 15px;
    border-radius: 20px;
    font-weight: 500;
    font-size: var(--font-size-base);
    transition: var(--transition-lift);
    box-shadow: var(--shadow-sm);
    will-change: transform, box-shadow;
}
.interest-badge:hover {
    transform: translateY(var(--hover-lift-amount));
    box-shadow: var(--shadow-md);
}
.interest-badge--gamedev { background: rgba(124, 77, 255, 0.1); color: var(--primary); --focus-color: var(--primary); }
.interest-badge--software { background: rgba(59, 130, 246, 0.1); color: var(--info); --focus-color: var(--info); }
.interest-badge--ai { background: rgba(142, 68, 173, 0.1); color: #8e44ad; --focus-color: #8e44ad; }
.interest-badge--music { background: rgba(245, 158, 11, 0.1); color: var(--warning); --focus-color: var(--warning); }
.interest-badge--youtube {
    background: var(--youtube-red-bg);
    color: var(--youtube-red);
    --focus-color: var(--youtube-red);
}

.personal-info {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 1px dashed var(--card-border);
}

.info-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: var(--font-size-base);
}
.info-item .material-icons-outlined {
    font-size: 20px;
    vertical-align: -5px;
    color: var(--text-secondary);
}

.contacts-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.contact-card {
    display: flex;
    align-items: center;
    gap: 15px;
    background: var(--card-bg-alpha);
    border-radius: 12px;
    padding: 20px;
    border: 1px solid var(--card-border);
    transition: var(--transition-lift);
    height: 100%;
    box-sizing: border-box;
    will-change: transform, box-shadow;
}

.contact-card:hover {
    transform: translateY(var(--hover-lift-amount));
    box-shadow: var(--shadow-md);
}

.contact-icon {
    position: relative;
    width: 50px;
    height: 50px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.contact-icon .icon-bg {
    position: absolute;
    inset: 0;
    border-radius: 12px;
    transition: var(--transition-smooth);
    box-shadow: 0 3px 6px rgba(0,0,0,0.1);
    z-index: 0;
    background: var(--info);
}

.contact-card:hover .contact-icon .icon-bg {
    transform: rotate(10deg) scale(1.1);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.contact-icon svg {
    position: relative;
    z-index: 1;
    width: 30px;
    height: 30px;
    fill: #FFFFFF;
}

.contact-label {
    margin: 0 0 4px;
    font-weight: 700;
    font-size: var(--font-size-md);
    color: var(--text);
}

.contact-value {
    margin: 0;
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    word-break: break-all;
}


#support-section .content-group > .stagger-child:not(:first-child) {
    margin-top: 40px;
}

.support-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 15px;
}
.support-title-wrapper + .support-list {
    margin-top: 20px;
}

.support-item {
    display: flex;
    align-items: center;
    gap: 15px;
    background: var(--card-bg-alpha);
    border-radius: 12px;
    padding: 15px;
    border: 1px solid var(--card-border);
    transition: var(--transition-smooth);
    position: relative;
    font-family: inherit;
    color: inherit;
    will-change: transform, box-shadow;
}

.support-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.support-icon {
    position: relative;
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.support-icon .icon-bg {
    position: absolute;
    inset: 0;
    border-radius: 10px;
    transition: var(--transition-smooth);
    box-shadow: 0 3px 6px rgba(0,0,0,0.1);
    z-index: 0;
}

.support-icon svg,
.support-icon .material-icons-outlined,
.support-icon .material-icons {
    position: relative;
    z-index: 1;
    width: 24px;
    height: 24px;
    fill: #212121;
    color: #212121;
    transition: filter 0.3s ease;
}

[data-theme="dark"] .support-icon svg,
[data-theme="dark"] .support-icon .material-icons-outlined,
[data-theme="dark"] .support-icon .material-icons {
    fill: #FFFFFF;
    color: #FFFFFF;
}

.support-icon .material-icons-outlined,
.support-icon .material-icons {
    font-size: 24px;
    width: auto;
    height: auto;
}

.support-item:hover .support-icon .icon-bg {
    transform: rotate(10deg) scale(1.1);
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.support-tbank:hover .support-icon svg { filter: drop-shadow(0 0 8px #FFDD2D); }
.support-donatty:hover .support-icon svg { filter: drop-shadow(0 0 8px #1abc9c); }
.support-donationalerts:hover .support-icon svg { filter: drop-shadow(0 0 8px #F57D07); }
.support-crypto-ton:hover .support-icon svg { filter: drop-shadow(0 0 8px #0098EA); }
.support-crypto-usdt:hover .support-icon svg { filter: drop-shadow(0 0 8px #009393); }

.support-tbank .icon-bg,
.support-donatty .icon-bg,
.support-donationalerts .icon-bg,
.support-crypto-ton .icon-bg,
.support-crypto-usdt .icon-bg {
    background: #FFFFFF;
}

[data-theme="dark"] .support-icon .icon-bg {
    background: #212121;
}

.support-details { flex: 1; }

.support-label {
    margin: 0 0 3px;
    font-weight: 700;
    font-size: var(--font-size-md);
    color: var(--text);
}

.support-commission {
    margin: 0;
    font-size: var(--font-size-base);
    font-weight: 600;
    transition: color 0.3s ease;
}

.tbank-commission { color: var(--secondary); }
.donatty-commission { color: #b45309; }
[data-theme="dark"] .donatty-commission { color: var(--warning); }
.donationalerts-commission { color: var(--danger); }
.crypto-commission {
    color: var(--text-secondary);
    font-weight: 400;
    font-size: var(--font-size-sm);
}

.support-item.is-copied .crypto-commission {
    color: var(--success);
}

.support-title-wrapper {
    position: relative;
    display: flex;
    justify-content: space-between;
    align-items: baseline;
    gap: 15px;
    flex-wrap: wrap;
    padding-bottom: 10px;
    margin-bottom: 5px;
}
.support-title-wrapper::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, var(--primary), var(--secondary));
    border-radius: 2px;
}
.support-list-title {
    margin: 0;
    padding: 0;
    flex-shrink: 0;
}

.support-category-desc {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    font-style: italic;
    text-align: right;
    margin: 0;
}

.side-badge {
    position: absolute;
    top: 15px;
    right: 15px;
    padding: 4px 10px;
    border-radius: 20px;
    font-weight: 500;
    font-size: var(--font-size-sm);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    z-index: 1;
}
.side-badge .material-icons, .side-badge .material-icons-outlined {
    font-size: 16px;
    vertical-align: -3px;
}
.side-badge--success { background: rgba(16, 185, 129, 0.2); color: var(--success); }
.side-badge--danger { background: rgba(239, 68, 68, 0.2); color: var(--danger); }
.side-badge--secondary { background: rgba(14, 165, 233, 0.2); color: var(--secondary); }
.side-badge--warning { background: rgba(245, 158, 11, 0.2); color: var(--warning); }

.status-badge .material-icons-outlined,
.award-badge .material-icons-outlined,
.tech-badge .material-icons-outlined,
.achievement-badge .material-icons-outlined,
.course-status .material-icons-outlined {
    font-size: 1.2em;
    vertical-align: -0.2em;
}

.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px) scale(0.95);
    transition: opacity 0.6s var(--easing-out-circ), transform 0.6s var(--easing-out-circ);
}
.animate-on-scroll.is-visible {
    opacity: 1;
    transform: translateY(0) scale(1);
}

.stagger-child {
    opacity: 0;
    transform: translateY(20px) scale(0.95);
    transition: opacity 0.5s var(--easing-out-circ), transform 0.5s var(--easing-out-circ);
}
.is-visible .stagger-child {
    opacity: 1;
    transform: translateY(0) scale(1);
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 rgba(124, 77, 255, 0.4); }
    70% { box-shadow: 0 0 0 20px rgba(124, 77, 255, 0); }
    100% { box-shadow: 0 0 0 0 rgba(124, 77, 255, 0); }
}
.project-card.pulse-highlight { animation: pulse 1.5s; }

.about-paragraph {
    line-height: 1.7;
}

.secondary-edu-text { margin-top: 15px; }

.course-year-title {
    margin: 0 0 10px;
    font-weight: 500;
    font-size: var(--font-size-base);
    color: var(--text);
}

.share-modal-container {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 40px 20px;
    box-sizing: border-box;
    visibility: hidden;
    pointer-events: none;
    transition: visibility 0s 0.3s;
}

.share-modal-container::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.3);
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.share-modal-container:not(.hidden) {
    visibility: visible;
    pointer-events: auto;
    transition: visibility 0s;
}

.share-modal-container:not(.hidden)::before {
    opacity: 1;
}

.share-modal {
    position: relative;
    background: var(--header-bg);
    backdrop-filter: blur(15px);
    -webkit-backdrop-filter: blur(15px);
    border: 1px solid var(--card-border);
    border-radius: 12px;
    padding: 20px;
    width: 100%;
    max-width: 500px;
    z-index: 1001;
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
    transform: scale(0.95);
    opacity: 0;
    transition: transform 0.3s var(--easing-bounce), opacity 0.3s ease;
}

.share-modal-container:not(.hidden) .share-modal {
    transform: scale(1);
    opacity: 1;
}

.share-modal-close {
    position: absolute;
    top: 10px;
    right: 15px;
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--text-secondary);
    cursor: pointer;
    line-height: 1;
    padding: 0;
    transition: color 0.2s ease, transform 0.2s ease;
}
.share-modal-close:hover {
    color: var(--text);
    transform: rotate(90deg);
}

.share-modal-title {
    margin: 0 0 10px;
    font-size: 1.5rem;
    color: var(--text);
}

.share-modal-desc {
    margin: 0 0 20px;
    color: var(--text-secondary);
}

.share-options {
    display: flex;
    flex-direction: column;
    gap: 5px;
    margin-bottom: 25px;
}

.share-options .custom-checkbox {
    display: flex;
    align-items: center;
    gap: 12px;
    cursor: pointer;
    font-size: 1rem;
    padding: 10px;
    border-radius: 8px;
    transition: background-color 0.2s ease, opacity 0.2s ease;
}

.share-options .custom-checkbox:hover {
    background-color: var(--card-bg-alpha);
}

.share-options .custom-checkbox input[type="checkbox"] {
    display: none;
}

.checkbox-visual {
    width: 22px;
    height: 22px;
    border: 2px solid var(--card-border);
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.2s ease, border-color 0.2s ease, box-shadow 0.25s var(--easing-out-circ);
    flex-shrink: 0;
}

.checkbox-visual .check-icon {
    font-size: 18px;
    color: white;
    transform: scale(0);
    transition: transform 0.2s var(--easing-bounce);
}

.share-options .custom-checkbox input:checked + .checkbox-visual {
    background-color: var(--primary);
    border-color: var(--primary);
}

.share-options .custom-checkbox input:checked + .checkbox-visual .check-icon {
    transform: scale(1);
}

.share-options-subgroup {
    padding-left: 34px;
    display: flex;
    flex-direction: column;
    gap: 5px;
    transition: opacity 0.2s ease;
}

.share-link-wrapper {
    display: flex;
    gap: 10px;
}

.share-link-wrapper input {
    flex-grow: 1;
    padding: 10px;
    border-radius: 8px;
    border: 1px solid var(--card-border);
    background: var(--bg);
    color: var(--text);
    font-family: monospace;
    font-size: 0.9rem;
    transition: opacity 0.2s ease;
}

.share-link-wrapper button {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    background: var(--primary);
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s ease, opacity 0.2s ease;
}

.share-link-wrapper button:hover:not(:disabled) {
    background: var(--primary-dark);
}

.share-link-wrapper button:disabled {
    background: var(--card-border);
    opacity: 0.6;
    cursor: not-allowed;
}

@media (min-width: 768px) {
    header { padding: 30px 20px; }
    h1 { font-size: var(--font-size-xxl); margin-top: 0; }
    .subtitle { font-size: var(--font-size-md); }
    .content { padding: 30px; }
    .share-modal { padding: 30px; }
    .section-title { font-size: var(--font-size-xl); margin-bottom: 20px; }
    .skills-container { gap: 12px; }
    .skill { padding: 10px 18px; }
    .project-card { padding: 20px; }
    .project-title { font-size: var(--font-size-lg); }
    .status-badge { padding: 6px 12px; }
    .contacts-container { gap: 20px; }
    .contact-card { padding: 20px; gap: 15px; }
    .contact-icon { width: 50px; height: 50px; border-radius: 12px; }
    .contact-icon svg { width: 30px; height: 30px; }
    .support-item { padding: 20px; gap: 15px; }
    .support-icon { width: 50px; height: 50px; border-radius: 12px; }
    .support-icon svg, .support-icon .material-icons-outlined, .support-icon .material-icons { width: 30px; height: 30px; }
    .support-icon .material-icons-outlined, .support-icon .material-icons { font-size: 30px; }
    .achievement-badge { font-size: var(--font-size-sm); }
    .github-badge, .tech-badge { font-size: var(--font-size-sm); }
    .content-divider { margin: 25px 0; }
    .support-item { padding: 18px; gap: 20px; }
    .support-icon { width: 50px; height: 50px; border-radius: 12px; }
}

@media (max-width: 480px) {
    body {
        padding: 15px;
    }
    header {
        padding: 15px;
    }
    h1 {
        font-size: 1.8rem;
        margin-top: 45px;
    }
    .header-actions {
        top: 15px;
        right: 15px;
        padding: 4px;
        gap: 4px;
    }
    .header-action-btn {
        width: 36px;
        height: 36px;
    }

    .subtitle { font-size: 1rem; }
    .section-title { font-size: 1.2rem; }

    .skill, .interest-badge {
        padding: 10px 16px;
        font-size: 0.95rem;
    }

    .project-card .awards-container {
        position: static;
        margin-bottom: 12px;
        order: -1;
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }

    .project-header {
        flex-grow: 0;
        margin-bottom: 0;
    }

    .course-achievements {
        flex-direction: column;
        align-items: flex-start;
    }
    .course-status {
        position: relative;
        bottom: auto;
        right: auto;
        margin-top: 10px;
        align-self: flex-start;
    }

    .personal-info {
        flex-direction: column;
        gap: 10px;
    }

    .contacts-container {
        grid-template-columns: 1fr;
        gap: 15px;
    }

    .support-item {
        padding: 12px;
        gap: 12px;
        flex-wrap: wrap;
        align-items: center;
    }
    .support-icon {
        width: 40px;
        height: 40px;
    }
    .support-icon .material-icons-outlined, .support-icon .material-icons { font-size: 24px; }

    .side-badge {
        position: relative;
        top: auto;
        right: auto;
        margin-top: 0;
        flex-basis: 100%;
        order: 3;
        font-size: 0.85rem;
        padding: 5px 10px;
        display: inline-flex;
    }

    .support-title-wrapper {
        flex-direction: column;
        align-items: flex-start;
        gap: 0;
        padding-bottom: 5px;
    }
    .support-list-title {
        margin-bottom: 5px;
    }
    .support-category-desc {
        text-align: left;
    }
    .support-list {
        margin-top: 5px;
    }
    .share-options-subgroup {
        padding-left: 20px;
    }
}

.project-disclaimer {
    background-color: var(--card-bg-alpha);
    border: 1px solid var(--card-border);
    border-radius: 8px;
    padding: 12px 15px;
    margin-top: 15px;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* --- NAVIGATION STYLES --- */

/* Scrollbar Hiding */
html {
    -ms-overflow-style: none;  /* IE and Edge */
    scrollbar-width: none;  /* Firefox */
    scroll-behavior: smooth;
}
html::-webkit-scrollbar {
    display: none; /* Safari and Chrome */
}

/* Desktop Side Navigation Panel */
#side-nav-container {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 220px;
    background-color: var(--card-bg-alpha);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border-left: 1px solid var(--card-border);
    z-index: 100;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 20px;
    gap: 10px;
}

.side-nav-link {
    display: block;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-base);
    font-weight: 600;
    padding: 12px 20px;
    border-radius: 8px;
    text-align: center;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.side-nav-link:hover {
    background-color: var(--card-bg);
    color: var(--text);
}

.side-nav-link.active {
    background-color: var(--primary);
    color: white;
    font-weight: 700;
}

/* Mobile Hamburger Button */
#mobileNavToggle {
    display: none; /* Hidden by default, shown in media query */
    position: fixed;
    top: 20px;
    left: 20px;
    z-index: 1200; /* Above the overlay */
    background: var(--header-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--card-border);
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    width: 48px;
    height: 48px;
}

#mobileNavToggle .material-icons-outlined {
    transition: transform 0.3s ease, opacity 0.3s ease;
}

body.mobile-nav-open #mobileNavToggle .material-icons-outlined {
    transform: rotate(180deg);
}

/* Mobile Navigation Panel */
#mobile-nav-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1099;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
}

body.mobile-nav-open #mobile-nav-overlay {
    opacity: 1;
    visibility: visible;
}

#mobile-nav-container {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 280px;
    background-color: var(--header-bg); /* Use semi-transparent var */
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    z-index: 1100;
    transform: translateX(-100%);
    transition: transform 0.4s var(--easing-smooth);
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 20px;
    gap: 10px;
    box-shadow: var(--shadow-lg);
}

body.mobile-nav-open #mobile-nav-container {
    transform: translateX(0);
}

/* --- Services Section --- */

.services-container {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.service-card {
    background: var(--card-bg-alpha);
    border-radius: 12px;
    border: 1px solid var(--card-border);
    padding: 20px;
    box-shadow: 0 3px 6px rgba(0,0,0,0.05);
    transition: var(--transition-lift);
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-decoration: none;
    color: inherit;
    will-change: transform, box-shadow;
}

.service-card:hover {
    transform: translateY(var(--hover-lift-amount));
    box-shadow: var(--shadow-md);
    border-color: var(--primary);
}

.service-details {
    display: flex;
    flex-direction: column;
}

.service-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin: 0;
    color: var(--text);
}

.service-desc {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    margin: 4px 0 0 0;
}

.service-price {
    font-size: var(--font-size-lg);
    font-weight: 700;
    color: var(--primary);
    margin: 0;
    white-space: nowrap;
    padding-left: 20px;
}

/* --- Conditional Hiding via Body Classes --- */

/* Hide nav for single-section view */
.hide-side-nav #side-nav-container,
.hide-mobile-toggle #mobileNavToggle {
    display: none;
}

/* Hide elements based on Share Link */
.hide-share-button #shareButton,
.hide-header header,
.hide-main-header-name #main-header-name,
.hide-header-subtitle #header-subtitle,
.hide-skills #skills-section,
.hide-projects #projects-section,
.hide-education #education-section,
.hide-about #about-section,
.hide-contacts #contacts-section,
.hide-services #services-section,
.hide-support #support-section {
    display: none;
}


/* Responsive Visibility */
@media (max-width: 1100px) {
    #side-nav-container {
        display: none;
    }
    /* Show mobile toggle, unless it's meant to be hidden */
    .hide-mobile-toggle #mobileNavToggle {
        display: none;
    }
    #mobileNavToggle {
        display: grid; /* Assumes .header-action-btn has place-items:center */
    }
}