:root {
    --primary-color: rgba(186, 39, 88, 0.753); /* A slightly deeper blue */
    --secondary-color: #f8f9fa; /* Light grey for backgrounds */
    --accent-color: #ef84eb56; /* A vibrant yellow for accents */
    --text-color: #333;
    --light-text-color: #fff;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Roboto', sans-serif;
    color: var(--text-color);
    background-color: #f4f4f9;
    padding-top: 56px; /* Adjust for fixed navbar */
}

/* Navbar */
.navbar {
    background-color: var(--primary-color);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.navbar-brand {
    font-weight: 700;
    font-size: 1.5rem;
}

.nav-link {
    color: var(--light-text-color) !important;
    font-weight: 500;
    transition: color 0.3s ease;
}

.nav-link:hover {
    color: var(--accent-color) !important;
}

/* Header */
.header {
    background: linear-gradient(135deg, var(--primary-color), #003d82);
    color: var(--light-text);
    padding: 40px 20px;
    border-bottom: 5px solid var(--accent-color);
    text-align: center;
}

.profile-img {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    border: 5px solid var(--accent-color);
    object-fit: cover;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    margin-bottom: 20px;
}

.name {
    font-size: 2.8rem;
    font-weight: bold;
    margin-bottom: 5px;
}

.lead {
    font-size: 1.4rem;
    color: var(--accent-color);
    margin-bottom: 15px;
    font-style: italic;
}

.header .lead {
    color: var(--light-text-color);
    font-size: 1.2rem;
    font-weight: 300;
    max-width: 800px;
    margin: 10px auto;
}

.header .lead-secondary {
    color: #e9ecef;
    font-size: 1rem;
    font-weight: 300;
    max-width: 700px;
    margin: 20px auto;
    line-height: 1.6;
}

.social-links {
    margin-top: 25px;
}

.social-links a {
    color: var(--light-text-color);
    margin: 0 15px;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    border: 1px solid var(--light-text-color);
    padding: 8px 15px;
    border-radius: 20px;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.social-links a:hover {
    background-color: var(--light-text-color);
    color: var(--primary-color);
}

/* Content Sections */
.content-section {
    padding: 60px 0;
    border-bottom: 1px solid #eee;
}

.section-title {
    font-size: 2.2rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 40px;
    text-align: center;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background-color: var(--accent-color);
}

/* Experience Section */
.experience-item {
    margin-bottom: 30px;
    padding-left: 20px;
    border-left: 3px solid var(--accent-color);
    background-color: #fff;
    padding: 25px;
}

.experience-item h3 {
    color: #000 !important; /* Set heading color to black */
    font-size: 1.25rem;
    font-weight: 700;
}

/* Skill, Project, and Education Cards */
.skill-category {
    background-color: #fff;
    padding: 25px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    text-align: center;
    height: 100%;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-top: 4px solid var(--primary-color);
    display: flex;
    flex-direction: column;
}

.skill-category:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 25px rgba(0, 86, 179, 0.15);
}

.skill-category h4 {
    color: var(--primary-color);
    font-weight: 700;
    margin-bottom: 15px;
    font-size: 1.1rem;
}

.skill-category p {
    font-size: 0.95rem;
    flex-grow: 1;
}

.project-links {
    margin-top: auto; /* Pushes links to the bottom */
}


.experience-details {
    font-style: italic;
    color: #777;
    margin-bottom: 10px;
}

.experience-item ul {
    padding-left: 20px;
    list-style-type: disc;
}

/* Certificate & Project Cards */
.certificate-card, .project-card {
    background: var(--light-gray);
    border-radius: var(--border-radius);
    padding: 25px;
    margin-bottom: 20px;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.certificate-card .card-body, .project-card .card-body {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.certificate-card .card-text, .project-card .card-text {
    flex-grow: 1;
    margin-bottom: 1rem;
}

.issuer-logo {
    width: 40px;
    height: 40px;
    object-fit: contain;
    margin-right: 15px;
}

.certificate-card h4, .project-card h4 {
    font-size: 1.2rem;
    color: var(--primary-color);
    font-weight: bold;
    margin-bottom: 10px;
}

.certificate-card p, .project-card p {
    font-size: 1rem;
    margin-bottom: 0;
}

.btn-outline-primary {
    color: var(--accent-color);
    border-color: var(--accent-color);
    margin-top: auto; /* Pushes button to the bottom */
}

.btn-outline-primary:hover {
    background-color: var(--accent-color);
    color: white;
}

/* Footer */
.footer {
    background-color: var(--secondary-color);
    color: var(--light-text);
    text-align: center;
    padding: 20px 0;
}

/* Modal Styling */
.modal-lg {
    max-width: 800px;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header {
        text-align: center;
    }

    .profile-img {
        margin-bottom: 20px;
    }

    .name {
        font-size: 2.2rem;
    }

    .lead {
        font-size: 1.2rem;
    }

    .social-links {
        display: flex;
        flex-direction: column;
        align-items: center;
    }

    .social-link {
        margin-right: 0;
        margin-bottom: 10px;
    }
}

.project-card .card-body {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-card h4 {
    display: flex;
    align-items: center;
}

.project-card h4 i {
    color: var(--accent-color);
}

.project-links {
    margin-top: auto; /* Pushes links to the bottom */
}

.project-links .btn {
    margin-right: 5px;
    margin-bottom: 5px;
}

.project-links a:hover {
    background-color: #8d027fc5;
}

/* Skills Section */
.skill-category {
    background-color: #fff;
    border: 1px solid #eee;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    height: 100%;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.skill-category h4 {
    color: var(--primary-color);
    margin-bottom: 15px;
    font-weight: 700;
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 10px;
}

.skill-category p {
    font-size: 0.9rem;
    color: #555;
    line-height: 1.6;
    margin-bottom: 0;
}


/* Certificate Section - make these cards match the Core Skills "popping" style */
.certificate-card {
    background-color: #fff;
    border: 1px solid #eee;
    border-radius: 8px;
    padding: 20px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.certificate-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 25px rgba(179, 0, 167, 0.12);
}

.certificate-card .card-body {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.certificate-card .issuer-logo {
    width: 48px;
    height: 48px;
    object-fit: contain;
    margin-right: 12px;
}

.publication-citation {
    font-size: 0.85rem;
    color: #555;
    margin-top: 10px;
    margin-bottom: 10px;
    font-style: italic;
    line-height: 1.5;
}

.publication-citation a {
    word-break: break-all;
}

/* Publication video styling */
.publication-video {
    display: block;
    width: 100%;
    max-width: 360px; /* keep videos compact on wide screens */
    aspect-ratio: 16/9; /* enforce a consistent player box */
    height: auto;
    border-radius: 8px;
    box-shadow: 0 8px 20px rgba(0,0,0,0.08);
    object-fit: cover;
    background-color: #000;
}

@media (max-width: 991px) {
    /* On narrower screens allow the video to expand to the column width */
    .publication-video {
        max-width: 100%;
        aspect-ratio: 16/9;
    }
}

@media (max-width: 767px) {
    .publication-video {
        max-height: 220px;
        width: 100%;
        max-width: 100%;
        aspect-ratio: 16/9;
    }
}