:root {
   
    --primary-cyan: #4DD0E1;      
    --secondary-cyan: #26C6DA;      
    --cyan-light: #80DEEA;         
    --cyan-dark: #00ACC1;           

    /* Background colors */
    --dark-bg: #0a1929;             
    --dark-card: #1e2a3a;           
    --light-bg: #ffffff;
    --light-card: #f8f9fa;

    /* Text colors */
    --text-white: #ffffff;
    --text-dark: #1a1a2e;
    --gray-text: #94a3b8;          

    /* Status colors (for certification table) */
    --status-progress: #ffb74d;
    --status-notstarted: #5a6b7b;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--dark-bg);
    color: var(--text-white);
    line-height: 1.6;
}

/* Accessibility: visible keyboard focus */
a:focus-visible,
button:focus-visible,
.form-control:focus-visible {
    outline: 3px solid var(--cyan-light);
    outline-offset: 2px;
}

.navbar {
    background-color: var(--dark-bg);
    padding: 1.5rem 0;
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-white) !important;
}

.nav-link {
    color: var(--text-white) !important;
    font-size: 1.1rem;
    margin-left: 2rem;
    transition: color 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-cyan) !important;
}

/* Intro Section (Homepage) */
.intro-section {
    min-height: 70vh;
    display: flex;
    align-items: center;
    padding-top: 100px;
    padding-bottom: 20px;
    background-color: var(--dark-bg);
}

.intro-text {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text-white);
}

.intro-title {
    font-size: 3.2rem;
    font-weight: 900;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--text-white);
}

.highlight {
    color: var(--primary-cyan);
}

.intro-subtitle {
    font-size: 1.2rem;
    color: var(--gray-text);
    margin-bottom: 2rem;
    max-width: 100%;
    line-height: 1.6;
}

.cta-buttons {
    display: flex;
    gap: 1.5rem;
    flex-wrap: wrap;
}

.btn-cyan {
    background-color: var(--primary-cyan);
    color: var(--text-white);
    padding: 12px 30px;
    border-radius: 25px;
    border: none;
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-cyan:hover {
    background-color: var(--secondary-cyan);
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(77, 208, 225, 0.5);
    color: var(--text-white);
}

.btn-cyan-outline {
    background-color: transparent;
    color: var(--primary-cyan);
    padding: 12px 30px;
    border-radius: 25px;
    border: 2px solid var(--primary-cyan);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
}

.btn-cyan-outline:hover {
    background-color: var(--primary-cyan);
    color: var(--text-white);
    transform: translateY(-2px);
}

.intro-illustration {
    position: relative;
    max-width: 350px;
    margin-left: auto;
}

.intro-illustration img {
    max-width: 100%;
    height: auto;
    border-radius: 50%;
    padding: 15px;
    opacity: 0.8;
}

/* Skills & Certifications Section (Homepage) */
.skills-section {
    min-height: auto;
    padding: 60px 0 80px 0;
    background-color: var(--dark-bg);
}

.section-title-home {
    font-size: 3rem;
    font-weight: 900;
    color: var(--text-white);
    margin-bottom: 3rem;
}

.skills-category {
    margin-bottom: 3rem;
}

.skills-subtitle {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-cyan);
    margin-bottom: 2rem;
}

/* Technology Badges */
.skills-badges-home {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
}

.skill-badge-home {
    background-color: var(--primary-cyan);
    color: var(--text-white);
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    font-size: 1rem;
    font-weight: 600;
    display: inline-block;
    transition: transform 0.3s ease;
}

.skill-badge-home:hover {
    transform: translateY(-3px);
}

.skill-badge-home.dark {
    background-color: var(--cyan-dark);
}

.skill-badge-home.light {
    background-color: var(--cyan-light);
    color: var(--dark-card);
}

/* ============================================= */
/* Certification Table (HTML TABLE)  */
/* ============================================= */
.cert-table-wrapper {
    max-width: 900px;
    margin: 0 auto;
    overflow-x: auto;            
    border-radius: 15px;
    border: 2px solid var(--primary-cyan);
}

.cert-table {
    width: 100%;
    min-width: 600px;            
    border-collapse: collapse;
    background: var(--dark-card);
    color: var(--text-white);
}

.cert-table caption {
    caption-side: bottom;
    padding: 1rem;
    font-size: 0.9rem;
    color: var(--gray-text);
    text-align: center;
}

.cert-table thead {
    background: var(--cyan-dark);
}

.cert-table th {
    padding: 1rem 1.25rem;
    text-align: left;
    font-weight: 700;
    font-size: 1.05rem;
    color: var(--text-white);
}

.cert-table td {
    padding: 1rem 1.25rem;
    border-top: 1px solid rgba(77, 208, 225, 0.2);
    vertical-align: middle;
}

.cert-table tbody tr {
    transition: background 0.3s ease;
}

.cert-table tbody tr:hover {
    background: rgba(77, 208, 225, 0.08);
}

.cert-table .cert-title {
    color: var(--primary-cyan);
    font-weight: 700;
    white-space: nowrap;
}

.cert-table .cert-focus {
    color: var(--gray-text);
}

/* Status badges inside the table */
.status-badge {
    display: inline-block;
    padding: 0.3rem 0.85rem;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 600;
    white-space: nowrap;
}

.status-complete {
    background-color: var(--primary-cyan);
    color: var(--text-dark);
}

.status-progress {
    background-color: var(--status-progress);
    color: var(--text-dark);
}

.status-notstarted {
    background-color: var(--status-notstarted);
    color: var(--text-white);
}

.certifications-badges {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.cert-badge-home {
    background: linear-gradient(135deg, var(--dark-card) 0%, #0f1419 100%);
    border: 2px solid var(--primary-cyan);
    border-radius: 15px;
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    transition: all 0.3s ease;
}

.cert-badge-home:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(77, 208, 225, 0.3);
    border-color: var(--secondary-cyan);
}

.cert-name {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--primary-cyan);
}

.cert-desc {
    font-size: 0.95rem;
    color: var(--gray-text);
}


.about-section-cyan {
    min-height: 100vh;
    padding-top: 120px;
    padding-bottom: 80px;
    background: linear-gradient(135deg, #26C6DA 0%, #4DD0E1 50%, #80DEEA 100%);
}

.about-card {
    background-color: var(--dark-card);
    border-radius: 25px;
    padding: 3rem;
    max-width: 1000px;
    margin: 0 auto;
}

.section-title {
    font-size: 3.5rem;
    font-weight: 900;
    margin-bottom: 3rem;
    color: var(--text-white) !important;
}

.about-content {
    color: var(--text-white) !important;
}

.about-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 1.5rem;
    color: var(--text-white) !important;
}

/* Keywords styling */
.keyword {
    color: var(--primary-cyan);
    font-weight: 700;
    font-size: 1.15rem;
}


.projects-section-cyan {
    min-height: 100vh;
    padding-top: 120px;
    padding-bottom: 80px;
    background: linear-gradient(135deg, #26C6DA 0%, #4DD0E1 50%, #80DEEA 100%);
}

.projects-section-cyan .section-title {
    color: var(--text-white);
}

.filter-buttons {
    margin-bottom: 3rem;
}

.btn-filter {
    background-color: var(--dark-card);
    color: var(--text-white);
    border: 2px solid var(--primary-cyan);
    border-radius: 25px;
    padding: 10px 25px;
    margin: 0 5px;
    transition: all 0.3s ease;
}

.btn-filter:hover,
.btn-filter.active {
    background-color: var(--primary-cyan);
    color: var(--text-white);
}

/* Bootstrap Project Cards */
.project-bootstrap-card {
    background-color: var(--dark-card);
    border: none;
    border-radius: 15px;
    overflow: hidden;
    transition: transform 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.project-bootstrap-card:hover {
    transform: translateY(-10px);
}

/* CSS FILTERS requirement: images start grayscale, turn full colour on hover */
.project-bootstrap-card .card-img-top {
    height: 250px;
    object-fit: cover;
    filter: grayscale(100%) contrast(1.05);
    transition: filter 0.4s ease;
}

.project-bootstrap-card:hover .card-img-top {
    filter: grayscale(0%) contrast(1);
}

.project-bootstrap-card .card-body {
    padding: 1.5rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.project-bootstrap-card .card-title {
    color: var(--primary-cyan);
    font-weight: 700;
    font-size: 1.3rem;
    margin-bottom: 0.8rem;
}

.project-bootstrap-card .card-text {
    color: var(--text-white);
    margin-bottom: 1rem;
    flex-grow: 1;
}

.project-bootstrap-card .btn {
    margin-top: auto;
}

/* Coming Soon Placeholder */
.coming-soon-placeholder {
    height: 250px;
    background: #00ACC1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 2px solid var(--primary-cyan);
}

.coming-soon-text {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-cyan);
    letter-spacing: 3px;
}

/* Disabled Button Style */
.btn-cyan.disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
    background-color: #555555;
    border-color: #555555;
}

/* ============================================= */
/* Embedded Live Project (EMBEDS)    */
/* ============================================= */
.embed-section {
    max-width: 960px;
    margin: 4rem auto 0 auto;
}

.embed-intro {
    color: var(--text-white);
    font-size: 1.1rem;
}

.embed-wrapper {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%;       
    height: 0;
    overflow: hidden;
    border-radius: 15px;
    border: 2px solid var(--primary-cyan);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
    background-color: var(--dark-card);
}

.embed-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

.contact-section {
    min-height: 100vh;
    padding-top: 120px;
    padding-bottom: 80px;
    background: linear-gradient(135deg, #26C6DA 0%, #4DD0E1 50%, #80DEEA 100%);
}

.contact-title-main {
    font-size: 3rem;
    font-weight: 900;
    color: var(--text-white);
    margin-bottom: 2rem;
}

.contact-info-outside {
    text-align: center;
    margin-bottom: 2rem;
}

.contact-info-outside p {
    font-size: 1.1rem;
    color: var(--text-white);
    margin-bottom: 0.5rem;
}

.contact-info-outside strong {
    font-weight: 600;
}

.contact-card {
    background-color: var(--dark-card);
    border-radius: 25px;
    padding: 3rem 2.5rem;
    margin-bottom: 0;
    position: relative;
}

.contact-character-image {
    max-width: 450px;
    width: 100%;
    margin: 0 auto;
    display: flex;
    align-items: flex-start;
    padding-top: 0;
    padding-left: 1rem;
    padding-right: 1rem;
}

.contact-character-image img {
    width: 100%;
    height: auto;
}

.contact-form-new {
    display: flex;
    flex-direction: column;
    height: 100%;
    padding-left: 1rem;
    padding-right: 1rem;
}

.contact-form-new .form-label {
    color: var(--primary-cyan);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.contact-form-new .form-control {
    background-color: #0f1419;
    border: 1px solid #2a3a4a;
    color: #ffffff;
    padding: 12px;
    border-radius: 10px;
}

.contact-form-new .form-control::placeholder {
    color: #6b7280;
}

.contact-form-new .form-control:focus {
    background-color: #0f1419;
    color: #ffffff;
    border-color: var(--primary-cyan);
    box-shadow: 0 0 0 0.25rem rgba(77, 208, 225, 0.25);
}

.contact-form-new textarea {
    resize: none;
    flex-grow: 1;
}

.social-buttons-inside {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1.5rem;
    padding-left: 1rem;
    padding-right: 1rem;
}

.social-buttons-inside .btn-social {
    flex: 1;
    max-width: 180px;
}

.contact-link {
    color: var(--primary-cyan);
    text-decoration: none;
}

.contact-link:hover {
    color: var(--secondary-cyan);
    text-decoration: underline;
}

.contact-title {
    font-size: 2.5rem;
    font-weight: 900;
    margin-bottom: 2rem;
    color: var(--text-white);
}

.contact-title-large {
    font-size: 3rem;
    font-weight: 900;
    color: var(--text-white);
}

.contact-left {
    padding: 2rem;
}

.contact-info p {
    margin-bottom: 1rem;
    color: var(--text-white);
}

.contact-info-overlay {
    background-color: rgba(26, 26, 46, 0.95);
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
}

.contact-info-overlay p {
    color: var(--text-white);
    margin-bottom: 0.5rem;
}

.contact-right {
    padding: 2rem;
}

.contact-form .form-label {
    color: var(--primary-cyan);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.contact-form .form-control {
    background-color: #2a2a3e;
    border: none;
    color: #cccccc;
    padding: 12px;
    border-radius: 10px;
}

.contact-form .form-control::placeholder {
    color: #888888;
}

.contact-form .form-control:focus {
    background-color: #2a2a3e;
    color: #cccccc;
    box-shadow: 0 0 0 0.25rem rgba(77, 208, 225, 0.25);
}

.contact-form textarea {
    resize: none;
}

.contact-illustration-final {
    margin-bottom: 2rem;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

.contact-illustration-final img {
    max-width: 100%;
    height: auto;
}

/* Tech Badges/Chips */
.tech-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 0.75rem;
    margin-bottom: 1rem;
}

.tech-badge {
    background-color: var(--primary-cyan);
    color: var(--text-white);
    padding: 0.25rem 0.75rem;
    border-radius: 15px;
    font-size: 0.85rem;
    font-weight: 600;
    display: inline-block;
}

.tech-badge.dark {
    background-color: var(--cyan-dark);
}

.tech-badge.light {
    background-color: var(--cyan-light);
    color: var(--dark-card);
}

.btn-social {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    font-size: 0.95rem;
}

.btn-social svg {
    fill: currentColor;
}

.social-buttons-final {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.social-buttons-left {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.footer-section {
    background-color: var(--dark-bg);
    padding: 2rem 0;
    text-align: center;
}

.footer-text {
    color: var(--text-white);
    margin: 0;
}

/* Responsive Design */
@media (max-width: 992px) {
    .intro-title {
        font-size: 3rem;
    }

    .section-title {
        font-size: 2.5rem;
    }

    .section-title-home {
        font-size: 2.5rem;
    }

    .intro-section,
    .about-section-cyan,
    .projects-section-cyan,
    .contact-section {
        padding-top: 100px;
    }

    .skills-section {
        padding: 60px 0;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .btn-cyan,
    .btn-cyan-outline {
        text-align: center;
        width: 100%;
        max-width: 300px;
    }

    .certifications-badges {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .intro-title {
        font-size: 2.5rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .nav-link {
        margin-left: 0;
        margin-bottom: 0.5rem;
    }

    .filter-buttons {
        display: flex;
        flex-wrap: wrap;
        justify-content: center;
    }

    .btn-filter {
        margin-bottom: 10px;
    }

    .contact-info-bottom,
    .contact-form-right {
        padding: 1rem;
        margin-bottom: 2rem;
    }

    .contact-title-large {
        font-size: 2rem;
        margin-bottom: 2rem;
    }

    .about-card {
        padding: 1.5rem;
    }

    .social-buttons-left .btn-social {
        max-width: 100%;
    }

    /* Tighter table padding on small screens */
    .cert-table th,
    .cert-table td {
        padding: 0.75rem 0.85rem;
        font-size: 0.95rem;
    }
}

/* Accessibility: respect users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
    }

    .project-bootstrap-card:hover {
        transform: none;
    }
}