:root {
    --shadow-light: 8px 8px 16px #a3b1c6;
    --shadow-dark: -8px -8px 16px #ffffff;
    --card-bg: #e0e5ec;
    --radius: 20px;
    --spacing: 1.5rem;
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;
    --bg-color: #e0e5ec;
    --text-color: #2a2a2a;
    --box-shadow: 8px 8px 16px #a3b1c6, -8px -8px 16px #ffffff;
    --box-shadow-inset: inset 6px 6px 12px #a3b1c6, inset -6px -6px 12px #ffffff;
    --btn-active: inset 2px 2px 5px #bec3c9, inset -2px -2px 5px #ffffff;
    --accent-color: #0ea5e9;
    --accent-color-dark: #0782b8;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html {
    background: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-body);
    line-height: 1.6;
}

body {
    min-height: 100vh;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    background: var(--bg-color);
    color: var(--text-color);
}

.profile-header {
    padding: var(--spacing);
    margin: var(--spacing) auto;
    width: 100%;
    max-width: auto;
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow-light), var(--shadow-dark);
    text-align: center;
    position: relative; 
    display: flex;
    flex-direction: column;
    align-items: center;
}

.profile-nav-container {
    position: absolute;
    bottom: 0%;
    transform: translateY(-50%);
    width: 100%;
    padding: 0 var(--spacing);
    display: flex;
    justify-content: space-between;
    align-items: center;
    pointer-events: none;
}

.profile-header .profile-image,
.profile-header .profile-name,
.profile-header .page-desc {
    position: relative; 
    z-index: 10;
}
.profile-nav-container .nav-controls,
.profile-nav-container .repo-btn {
    pointer-events: auto; 
}


.profile-image {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 1rem;
    border: 4px solid var(--bg-color); 
    box-shadow: var(--shadow-light), var(--shadow-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: #555;
    background: #e0e5ec;
}

.profile-name {
    color: var(--text-color);
    font-size: 2.2rem;
    font-weight: 700;
    font-family: var(--font-heading);
    text-shadow: 2px 2px 4px var(--shadow-dark);
    margin-bottom: 0.5rem;
}

main { 
    flex: 1; 
    width: 100%; 
    padding: 0;
    padding-bottom: var(--spacing);
    display: flex;
    flex-direction: column;
}

.main-content {
    margin: 0 auto;
    padding: 0 var(--spacing);
    width: 100%;
    max-width: auto;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.section-header {
    background: var(--card-bg);
    border-radius: var(--radius);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    margin-bottom: var(--spacing);
    box-shadow: var(--box-shadow);
}

.header-content { text-align: left; }

.page-title {
    color: var(--text-color);
    font-family: var(--font-heading);
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
    font-weight: 700;
}

.page-desc { color: rgba(42, 42, 42, 0.8); font-size: 1rem; }

.header-nav-row {
    display: none;
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.nav-controls {
    display: flex;
    gap: 1rem;
}

.nav-icon-btn {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--card-bg);
    border: none;
    color: var(--text-color);
    box-shadow: var(--box-shadow);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 1.1rem;
    text-decoration: none; 
}

.nav-icon-btn:hover {
    color: var(--accent-color);
    transform: translateY(-2px);
}

.nav-icon-btn:active {
    box-shadow: var(--btn-active);
    transform: translateY(1px);
}

.repo-btn {
    padding: 10px 20px;
    border-radius: 12px;
    background: var(--card-bg);
    color: var(--text-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9rem;
    box-shadow: var(--box-shadow);
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 8px;
}

.repo-btn:hover {
    transform: translateY(-2px);
    color: var(--accent-color);
}

.repo-btn:active {
    box-shadow: var(--btn-active);
    transform: translateY(1px);
}

.card-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing);
    flex: 1; 
}

.card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: var(--box-shadow);
    display: block;
}

.doc-heading {
    color: var(--text-color);
    font-family: var(--font-heading);
    font-size: 1.4rem;
    margin-top: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 600;
}
.doc-heading:first-child { margin-top: 0; }

.doc-p {
    margin-bottom: 1rem;
    color: var(--text-color);
    text-align: justify;
}

.doc-ul { margin-left: 1.5rem; margin-bottom: 1rem; }
.doc-ul li { margin-bottom: 0.5rem; color: var(--text-color); }

.code-box-wrapper {
    position: relative;
    margin: 1.2rem 0;
}

.code-box {
    background: var(--card-bg);
    padding: 1.5rem;
    padding-right: 3.5rem;
    border-radius: 15px;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    color: #333;
    overflow-x: auto;
    box-shadow: var(--box-shadow-inset);
    border: 1px solid rgba(255,255,255,0.1);
    white-space: pre-wrap;
    word-break: break-all;
}

.copy-btn {
    position: absolute;
    top: 12px;
    right: 12px;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: var(--card-bg);
    border: none;
    color: #555;
    cursor: pointer;
    box-shadow: 4px 4px 8px #bec3c9, -4px -4px 8px #ffffff;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.copy-btn:hover { color: #000; transform: translateY(-1px); }
.copy-btn:active { box-shadow: var(--btn-active); transform: translateY(1px); }

.credit-btn {
    background: var(--card-bg);
    color: var(--text-color);
    padding: 15px 20px;
    border-radius: 15px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    box-shadow: var(--box-shadow);
    transition: all 0.3s ease;
    border: 1px solid rgba(255,255,255,0.1);
    cursor: pointer;
}

.credit-btn:hover {
    transform: translateY(-3px);
    box-shadow: 8px 8px 16px #b0bbc9, -8px -8px 16px #ffffff;
}
.credit-btn:active {
    transform: translateY(1px);
    box-shadow: var(--btn-active);
}

.sub-tabs-scroll {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
}

.sub-tab-btn {
    background: var(--card-bg);
    border: none;
    padding: 10px 16px;
    border-radius: 12px;
    font-weight: 500;
    color: var(--text-color);
    box-shadow: var(--box-shadow);
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
}

.sub-tab-btn:hover {
    transform: translateY(-2px);
}

.sub-tab-btn.active {
    box-shadow: var(--btn-active);
    color: var(--accent-color);
}

.table-wrapper {
    overflow-x: auto;
    border-radius: 15px;
    box-shadow: var(--box-shadow-inset);
    padding: 1rem;
}

.download-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
    min-width: 500px;
}

.download-table th, .download-table td {
    padding: 10px;
    text-align: left;
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

.download-table th {
    font-weight: 600;
    color: var(--text-color);
}

.download-table a {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
}

.download-table a:hover {
    text-decoration: underline;
}

.note-box {
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 15px;
    box-shadow: var(--box-shadow);
    margin-bottom: 1rem;
}

.video-inset-wrapper {
    width: 100%;
    max-width: 600px;
    margin: 1.5rem auto;
    padding: 12px;
    border-radius: 20px;
    background: var(--card-bg);
    box-shadow: var(--box-shadow-inset);
}

.styled-video {
    width: 100%;
    border-radius: 15px;
    display: block;
    outline: none;
}

.tab-content, .sub-tab-content {
    animation: fadeIn 0.4s;
}
.tab-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

.footer {
    text-align: center;
    padding: 2rem var(--spacing);
    margin-top: auto;
    max-width: 1100px;
    width: 100%;
    margin: var(--spacing) auto 0 auto;
}

.footer-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.footer-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.footer-text {
    font-size: 1rem;
    color: rgba(42, 42, 42, 0.8);
    max-width: 600px;
    margin: 0 auto;
}

.footer-divider {
    width: 100%;
    height: 1px;
    background: rgba(0,0,0,0.1);
    box-shadow: 0 1px 0 rgba(255,255,255,0.7);
    border: none;
    margin: 1rem 0;
}

.documented-by {
    font-size: 0.9rem;
    color: rgba(42, 42, 42, 0.6);
    margin-bottom: 0.5rem;
}

.profile-pill {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 8px 20px 8px 8px;
    background: var(--card-bg);
    border-radius: 50px;
    box-shadow: var(--box-shadow);
    text-decoration: none;
    color: var(--text-color);
    font-weight: 600;
    transition: transform 0.2s;
}

.profile-pill:hover {
    transform: translateY(-2px);
}

.profile-pill img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--bg-color);
}

.clickable-details {
    background: var(--card-bg);
    border-radius: 20px; 
    padding: 1rem;
    box-shadow: var(--box-shadow);
    transition: all 0.2s ease;
    margin-bottom: var(--spacing);
}

.clickable-details:hover {
    box-shadow: 8px 8px 16px #b0bbc9, -8px -8px 16px #ffffff;
    transform: translateY(-1px);
}

.clickable-details[open] {
    box-shadow: var(--box-shadow-inset);
    background: #e0e5ec;
    transform: translateY(1px);
}

.clickable-details summary {
    display: flex;
    align-items: center;
    cursor: pointer;
    font-weight: 600;
    list-style: none;
    color: var(--text-color);
}

.clickable-details summary::before {
    content: '\f0da';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    margin-right: 0.8rem;
    color: var(--accent-color);
    transition: transform 0.2s;
}

.clickable-details[open] summary::before {
    content: '\f0d7';
    color: var(--accent-color-dark);
}

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

.credit-btn.accent-bg:hover {
    color: white;
}

.text-warning {
    font-weight: 600; 
    color: #b91c1c;
}

.text-info-tip {
    font-weight: 600; 
    color: #0369a1;
}

.text-note-center {
    font-size: 0.85rem;
    margin-top: 0.5rem;
    text-align: center;
}

@media (max-width: 768px) {
    :root {
        --spacing: 1rem;
    }
    
    .profile-name { font-size: 1.8rem; }
    .page-desc { font-size: 0.9rem; }
    .profile-image { width: 100px; height: 100px; font-size: 2.5rem;}
    
    .profile-header { 
        padding: var(--spacing); 
        margin: var(--spacing);
    }

    .main-content {
        padding: 0 var(--spacing);
    }
    
    .section-header { 
        text-align: center; 
        padding: 1.5rem;
    }
    
    .card { padding: 1.5rem; border-radius: 15px; }

    .profile-nav-container {
        position: relative;
        top: auto;
        transform: none;
        padding: 0;
        margin-top: 1rem;
        flex-direction: column;
        gap: 1rem;
        pointer-events: auto;
    }
    
    .profile-nav-container .nav-controls {
        order: 2;
    }
    .profile-nav-container .repo-btn {
        order: 1; 
    }

    .header-nav-row {
        flex-direction: column-reverse;
        gap: 1rem;
        display: none;
    }
    .nav-controls { justify-content: center; }

    .clickable-details {
        border-radius: 15px;
        padding: 1rem;
        margin-bottom: 1rem;
    }
}
@media (max-width: 1100px) {
    .profile-header, .main-content, .footer {
        max-width: 100%;
    }
}