/* --- NEW: CSS Variables for Theming --- */
:root {
    --bg-color: #FFFFFF;
    --text-color: #4A4A4A;
    --heading-color: #1a1a1a;
    --subtle-text-color: #888888;
    --border-color: #EAEAEA;
    --link-color: #1D4ED8;
    --hover-bg-color: #F5F5F5;
    --skill-bg-color: #1a1a1a;
    --skill-text-color: #FFFFFF;
    --tag-border-color: #EAEAEA; 
    --education-tag-bg: #F0F0F0; 
    --education-tag-text: #666666; 
}

body.dark-mode {
    --bg-color: #121212; 
    --text-color: #E5E7EB;
    --heading-color: #F9FAFB;
    --subtle-text-color: #9CA3AF;
    --border-color: #2a2a2a; 
    --link-color: #38BDF8;
    --hover-bg-color: #1a1a1a; 
    --skill-bg-color: #2a2a2a; 
    --skill-text-color: #E5E7EB;
    --tag-border-color: #374151; 
    --education-tag-bg: #374151; 
    --education-tag-text: #E5E7EB; 
}

/* General Body Styles */
body {
    display: flex;
    flex-direction: column; 
    align-items: center;    
    min-height: 100vh;
    margin: 0;
    background-color: var(--bg-color); 
    font-family: 'Space Mono', monospace;
    color: var(--text-color); 
    padding: 0 1rem; 
    box-sizing: border-box; 
    transition: background-color 0.3s, color 0.3s; 
}

.card {
    display: flex;
    flex-direction: column;
    align-items: center; 
    max-width: 900px;
    padding: 2rem 0; 
    width: 100%;
    flex-grow: 1; 
}

.main-content {
    display: flex;
    align-items: center; 
    justify-content: center;
    gap: 2rem;
    width: 100%;
}

.text-content {
    display: flex;
    flex-direction: column;
    text-align: left;
}

.header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 0.25rem;
}

h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--heading-color);
    margin: 0;
}

.subtitle {
    margin: 0 0 1.5rem 0; 
    font-size: 1rem;
}

.flip-card {
    background-color: transparent;
    width: 150px;
    height: 150px;
    perspective: 1000px;
    flex-shrink: 0; 
    cursor: pointer; /* Add pointer cursor to indicate it's clickable */
}

.flip-card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.7s;
    transform-style: preserve-3d;
}

/* CHANGED: This now triggers on a class instead of :hover */
.flip-card.is-flipped .flip-card-inner {
    transform: rotateY(180deg);
}

.flip-card-front, .flip-card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    -webkit-backface-visibility: hidden;
    backface-visibility: hidden;
    border-radius: 12px;
    overflow: hidden; 
    box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

.flip-card-back {
    transform: rotateY(180deg);
}

.flip-card img {
    width: 100%;
    height: 100%;
    object-fit: cover; 
}

.bio {
    text-align: left;
    max-width: 450px; 
}

.bio-text {
    margin: 0;
    line-height: 1.6;
}

.location {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--subtle-text-color);
    margin-top: 1rem;
}

.location svg {
    stroke: #d9534f;
}

.social-links {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
}

.social-links a {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-color);
    transition: background-color 0.2s;
}

.social-links a:hover {
    background-color: var(--hover-bg-color);
}

.section {
    width: 100%;
    margin-top: 3rem;
    padding: 0 1rem;
}

.section h2 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--heading-color);
    margin-bottom: 1.5rem;
    text-align: left;
}

.education-entry {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.education-logo {
    width: 40px;
    height: 40px;
}

.education-details {
    text-align: left;
}

.education-details strong {
    display: block;
    color: var(--heading-color);
    font-weight: 700;
}

.education-details p {
    margin: 0;
    color: var(--text-color);
}

.education-year-tag {
    margin-left: auto;
    background-color: var(--education-tag-bg);
    color: var(--education-tag-text);
    padding: 0.4rem 0.8rem;
    border: 1px solid var(--tag-border-color);
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 700;
    display: inline-flex; 
    align-items: center;
    justify-content: center;
}

.skills-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.skill-tag {
    background-color: var(--skill-bg-color);
    color: var(--skill-text-color);
    padding: 0.4rem 0.8rem;
    border-radius: 6px;
    font-size: 0.9rem;
    font-weight: 700;
}

.cp-profiles {
    margin-top: 1.5rem;
    text-align: left;
}

.cp-title {
    color: var(--subtle-text-color);
    font-size: 0.9rem;
    margin-bottom: 0.75rem;
}

.profile-links {
    display: flex;
    gap: 0.75rem;
}

.profile-links a {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0.5rem; 
    border: 1px solid var(--tag-border-color); 
    border-radius: 6px;
    color: var(--text-color); 
    transition: background-color 0.2s, border-color 0.2s;
    text-decoration: none; 
}

.profile-links a:hover {
    background-color: var(--hover-bg-color);
    border-color: var(--link-color); 
}

.github-heatmap {
    width: 100%;
    display: flex;
    justify-content: center;
}

.github-heatmap img {
    max-width: 100%;
}


.action-links {
    display: flex;
    gap: 1rem;
    margin-top: 3rem; 
    width: 100%;
    padding: 0 1rem;
}

.action-links a {
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    text-decoration: none;
    color: var(--text-color);
    font-size: 0.9rem;
    transition: background-color 0.2s, border-color 0.2s;
}

.action-links a:hover {
    background-color: var(--hover-bg-color);
    border-color: var(--link-color);
}

.get-in-touch {
    width: 100%;
    text-align: center;
    margin-top: 4rem;
    padding: 2rem 0;
}

.get-in-touch h2 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--heading-color);
    margin-bottom: 1rem;
}

.get-in-touch p {
    color: var(--subtle-text-color);
    margin: 0;
}

.get-in-touch a {
    color: var(--link-color); 
    text-decoration: underline;
    font-weight: 700;
}

.get-in-touch a:hover {
    text-decoration: none; 
}


.theme-toggle-button {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background-color: var(--skill-bg-color);
    color: var(--skill-text-color);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    z-index: 1000;
    box-shadow: 0 4px 8px rgba(0,0,0,0.2);
    transition: background-color 0.3s, color 0.3s, transform 0.2s;
}

.theme-toggle-button:hover {
    transform: scale(1.1);
}

.theme-toggle-button .moon-icon {
    display: block;
}

.theme-toggle-button .sun-icon {
    display: none;
}

body.dark-mode .theme-toggle-button .moon-icon {
    display: none;
}

body.dark-mode .theme-toggle-button .sun-icon {
    display: block;
}

/* --- Learning Log Section --- */
.learning-log {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    text-align: left;
}

.log-entry {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    background-color: transparent;
    transition: background-color 0.2s, border-color 0.2s;
}

/* On index.html, the card is a link */
#latest-learning-log .log-entry {
    cursor: pointer;
}

#latest-learning-log .log-entry:hover {
    background-color: var(--hover-bg-color);
    border-color: var(--link-color);
}


.log-date {
    font-size: 0.85rem;
    color: var(--subtle-text-color);
    margin: 0 0 0.75rem 0;
}

.log-content h3 {
    margin: 0 0 0.5rem 0;
    font-size: 1.2rem;
    color: var(--heading-color);
}

.log-content p {
    margin: 0;
    line-height: 1.6;
}

.read-more {
    color: var(--link-color);
    font-weight: 700;
    text-decoration: none;
}
.read-more:hover {
    text-decoration: underline;
}

.view-more-container {
    width: 100%;
    display: flex;
    justify-content: center;
    margin-top: 1.5rem;
}

.view-more-button {
    border: 1px solid var(--border-color);
    padding: 0.6rem 1.2rem;
    border-radius: 6px;
    text-decoration: none;
    color: var(--text-color);
    font-size: 0.9rem;
    font-weight: 700;
    transition: background-color 0.2s, border-color 0.2s;
}

.view-more-button:hover {
    background-color: var(--hover-bg-color);
    border-color: var(--link-color);
}

/* --- Learning Log Page Specific --- */
.page-header {
    width: 100%;
    text-align: center;
    margin-bottom: 2rem;
    padding: 0 1rem;
}

.page-header h1 {
    margin-bottom: 0.5rem;
}

.back-link {
    display: inline-block;
    color: var(--link-color);
    text-decoration: none;
    font-weight: 700;
    margin-bottom: 2rem;
    transition: color 0.2s;
}

.back-link:hover {
    text-decoration: underline;
}

/* NEW: Styles for expandable cards */
.log-entry .log-full {
    display: none;
}

.log-entry.is-expanded .log-short {
    display: none;
}

.log-entry.is-expanded .log-full {
    display: block;
}

.expand-button {
    margin-top: 1rem;
    background: none;
    border: 1px solid var(--border-color);
    color: var(--text-color);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-family: 'Space Mono', monospace;
    font-weight: 700;
    cursor: pointer;
    transition: background-color 0.2s, border-color 0.2s;
}

.expand-button:hover {
    background-color: var(--hover-bg-color);
    border-color: var(--link-color);
}


@media (max-width: 768px) {
    .card {
        padding: 1rem 0;
    }

    .main-content {
        flex-direction: column; 
        text-align: center; 
    }

    .text-content, .bio, .header, .section h2, .cp-profiles {
        text-align: center; 
        align-items: center; 
    }
    
    .location, .social-links, .profile-links, .skills-list, .action-links {
        justify-content: center; 
    }

    h1 {
        font-size: 2rem; 
    }

    .education-entry {
        flex-direction: column; 
        text-align: center;
        gap: 0.5rem;
    }

    .education-year-tag { 
        margin-left: 0; 
        margin-top: 0.5rem;
    }

    .education-details {
        text-align: center; 
    }
}