/* ==========================================================================
   KSCSC Portfolio — Styles
   ========================================================================== */

/* --- CSS Custom Properties (Design Tokens) --- */
:root {
    --color-bg: #f5f5f7;
    --color-bg-alt: #eaeaed;
    --color-surface: #ffffff;
    --color-text: #1d1d1f;
    --color-text-muted: #6e6e73;
    --color-accent: #0d4f4f;
    --color-accent-light: #e8f0f0;
    --color-border: rgba(0, 0, 0, 0.08);
    --color-shadow: rgba(0, 0, 0, 0.06);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-signature: 'Dancing Script', 'Brush Script MT', 'Segoe Script', cursive;
    --transition: 0.2s ease;
}

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; }

html {
    scroll-behavior: smooth;
    scroll-snap-type: y proximity;
    height: 100%;
}

body {
    background-color: var(--color-bg);
    font-family: var(--font-body);
    color: var(--color-text);
    margin: 0;
    padding: 0;
    height: 100%;
    -webkit-overflow-scrolling: touch;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    line-height: 1.5;
}

/* --- Skip Link (a11y) --- */
.skip-link {
    position: absolute;
    top: -100%;
    left: 16px;
    z-index: 1000;
    padding: 12px 24px;
    background: var(--color-accent);
    color: #fff;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 600;
    transition: top var(--transition);
}
.skip-link:focus {
    top: 16px;
}

/* --- Focus Visible (a11y) --- */
:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 2px;
}

/* --- Scroll Snapping --- */
.main-wrapper,
.achievements-section,
.collab-section {
    scroll-snap-align: start;
}

/* ==========================================================================
   Hero / Main Wrapper
   ========================================================================== */
.main-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 40px 20px;
}

.container {
    display: flex;
    flex-direction: row-reverse;
    align-items: center;
    width: 88%;
    max-width: 1100px;
    gap: 48px;
}

/* --- Photo --- */
.photo {
    width: 38%;
    flex-shrink: 0;
}

.photo img {
    width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.1);
}

/* --- Content Column --- */
.content {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
}

/* --- Signature (merged, single rule) --- */
.signature {
    font-family: var(--font-signature);
    font-size: clamp(2.4em, 5vw, 4.2em);
    font-weight: 300;
    margin: 0 0 20px;
    color: var(--color-text);
    letter-spacing: 0.01em;
    line-height: 1.1;
    text-align: center;
}

/* --- ID Card --- */
.id-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 28px 32px;
    box-shadow: 0 4px 20px var(--color-shadow);
    text-align: center;
    margin-top: 8px;
    width: 100%;
    max-width: 480px;
}

.id-card h2 {
    margin: 0 0 8px;
    font-size: 1.4em;
    font-weight: 700;
    color: var(--color-accent);
}

.id-card .tagline {
    margin: 0 0 16px;
    font-size: 1em;
    color: var(--color-text-muted);
    line-height: 1.4;
}

.id-card .email-cta {
    margin: 0;
}

/* --- CTA Button --- */
.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: var(--color-accent);
    color: #fff;
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 1em;
    letter-spacing: 0.02em;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
    box-shadow: 0 4px 14px rgba(13, 79, 79, 0.25);
}
.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(13, 79, 79, 0.3);
    background: #0a3d3d;
}

/* ==========================================================================
   Service Slider
   ========================================================================== */
.service-box {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 24px;
    box-shadow: 0 4px 16px var(--color-shadow);
    text-align: center;
    width: 85%;
    margin-bottom: 20px;
    flex-shrink: 0;
}

.service-box h3 {
    color: var(--color-accent);
    margin: 0 0 8px;
    font-size: 1.1em;
}

.service-box p {
    color: var(--color-text-muted);
    margin: 0;
    font-size: 0.95em;
    line-height: 1.4;
}

.service-slider-container {
    width: 100%;
    max-width: 480px;
    overflow: hidden;
    margin: 24px auto;
    position: relative;
}

.service-slider-container:before,
.service-slider-container:after {
    content: "";
    position: absolute;
    top: 0;
    width: 200px;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}
.service-slider-container:before {
    left: 0;
    background: linear-gradient(to left, rgba(245, 245, 247, 0), var(--color-bg));
}
.service-slider-container:after {
    right: 0;
    background: linear-gradient(to right, rgba(245, 245, 247, 0), var(--color-bg));
}

.service-slider {
    display: flex;
}

/* ==========================================================================
   Contact / Social Links
   ========================================================================== */
.contact-links {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;
    margin-top: 8px;
    width: 100%;
    max-width: 480px;
}

.contact-links a {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: var(--color-surface);
    color: var(--color-text);
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9em;
    box-shadow: 0 2px 8px var(--color-shadow);
    transition: transform var(--transition), box-shadow var(--transition), color var(--transition);
}

.contact-links a svg {
    flex-shrink: 0;
    transition: color var(--transition);
}

.contact-links a:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
    color: var(--color-accent);
}

/* ==========================================================================
   Section Divider
   ========================================================================== */
.collab-split {
    height: 1px;
    background: var(--color-border);
    margin: 18px auto 6px;
    width: 80%;
    border-radius: 1px;
}

/* ==========================================================================
   Achievements / Badges Section
   ========================================================================== */
.achievements-section {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    margin: 0;
    min-height: 100vh;
    justify-content: center;
    box-sizing: border-box;
    padding: 60px 0;
    position: relative;
    z-index: 1;
    overflow: hidden;
}

.achievements-section h3 {
    margin: 0 0 12px;
    font-size: 1.3em;
    color: var(--color-accent);
    font-weight: 700;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

.achievements-badges {
    display: flex;
    gap: 16px;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    padding-bottom: 32px;
}

.achievements-badges > div[data-share-badge-id] {
    width: 150px;
    height: 270px;
}

/* Accredible image badges */
.accredible-badge {
    width: 150px;
    height: auto;
    display: inline-block;
    border-radius: 6px;
    box-shadow: 0 2px 6px var(--color-shadow);
    background: var(--color-surface);
}

/* Credly badge (generated SVG) */
.credly-badge {
    width: 150px;
    height: auto;
    display: inline-block;
    border-radius: 6px;
    box-shadow: 0 2px 6px var(--color-shadow);
    background: var(--color-surface);
}

/* Iframe embeds for Accredible */
.accredible-embed {
    width: auto;
    height: 100%;
    border: none;
    border-radius: 6px;
    box-shadow: 0 2px 8px var(--color-shadow);
    background: var(--color-surface);
    display: inline-block;
}

.badge-fallback-link {
    display: inline-block;
    padding: 10px 12px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    text-decoration: none;
    color: var(--color-text);
    font-weight: 600;
}
.badge-fallback-link:hover { text-decoration: underline; }

.badge-iframe-wrap .badge-fallback-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    box-sizing: border-box;
    padding: 6px;
}
.badge-iframe-wrap .badge-fallback-link svg { margin-right: 8px; flex: 0 0 auto; }
.badge-iframe-wrap .badge-fallback-link span { font-weight: 700; color: var(--color-text); }

.accredible-placeholder { display: inline-block; }

/* --- Badge Card --- */
.badge-card {
    width: 180px;
    background: var(--color-surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    box-shadow: 0 4px 16px var(--color-shadow);
    display: flex;
    flex-direction: column;
    align-items: stretch;
    overflow: hidden;
    transition: transform var(--transition), box-shadow var(--transition);
}
.badge-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.1);
}

.badge-iframe-wrap {
    padding: 12px 12px 6px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: transparent;
    box-sizing: border-box;
    height: 270px;
    overflow: hidden;
}

.badge-iframe-wrap iframe,
.badge-iframe-wrap img,
.badge-iframe-wrap div[data-share-badge-id] {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: 100%;
    display: block;
    object-fit: contain;
}

.badge-meta {
    padding: 8px 10px 6px;
    text-align: center;
}

.badge-title {
    font-weight: 600;
    font-size: 0.95em;
    line-height: 1.1em;
    margin-bottom: 6px;
    color: var(--color-text);
}

.badge-issuer {
    font-size: 0.82em;
    color: var(--color-text-muted);
}

.badge-footer {
    margin-top: auto;
    padding: 8px 10px;
    background: var(--color-accent-light);
    font-size: 0.7em;
    color: var(--color-text-muted);
    text-align: center;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* --- Badge Slider --- */
.badge-slider-container {
    width: 100%;
    overflow: hidden;
    margin-top: 18px;
    height: 400px;
    position: relative;
    margin-bottom: 36px;
}

.badge-slider {
    display: flex;
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    animation: badge-scroll 60s linear infinite;
}

.badge-slider .badge-card {
    margin-right: 40px;
}

/* Pause badge slider on hover */
.badge-slider-container:hover .badge-slider {
    animation-play-state: paused;
}

@keyframes badge-scroll {
    0% { transform: translateX(0%); }
    100% { transform: translateX(-50%); }
}

.badge-slider-container:before,
.badge-slider-container:after {
    content: "";
    position: absolute;
    top: 0;
    width: 160px;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}
.badge-slider-container:before {
    left: 0;
    background: linear-gradient(to left, rgba(245, 245, 247, 0), var(--color-bg));
}
.badge-slider-container:after {
    right: 0;
    background: linear-gradient(to right, rgba(245, 245, 247, 0), var(--color-bg));
}

/* ==========================================================================
   Collaboration Section
   ========================================================================== */
.collab-section {
    width: 100%;
    margin-top: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    box-sizing: border-box;
    padding: 60px 0;
    position: relative;
    z-index: 1;
    overflow: hidden;
}

.cooperated-with {
    text-align: center;
    font-weight: 700;
    margin-top: 12px;
    margin-bottom: 6px;
    color: var(--color-accent);
    font-size: 1.3em;
    letter-spacing: 0.03em;
    text-transform: uppercase;
}

/* Cooperated row */
.cooperated-row {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-top: 12px;
}

/* --- Logo / Collab Slider --- */
.logo-slider-container {
    width: 100%;
    overflow: hidden;
    margin-top: 18px;
    position: relative;
    margin-bottom: 36px;
    padding: 10px 0;
    height: 320px;
}

.logo-slider {
    display: flex;
    position: absolute;
    left: 0;
    top: 0;
    height: 100%;
    gap: 24px;
    align-items: center;
    animation: collab-scroll 40s linear infinite;
}

/* Pause collab slider on hover */
.logo-slider-container:hover .logo-slider {
    animation-play-state: paused;
}

@keyframes collab-scroll {
    0% { transform: translateX(0%); }
    100% { transform: translateX(-50%); }
}

/* Edge fade overlays */
.logo-slider-container:before,
.logo-slider-container:after {
    content: "";
    position: absolute;
    top: 0;
    width: 160px;
    height: 100%;
    z-index: 2;
    pointer-events: none;
}
.logo-slider-container:before {
    left: 0;
    background: linear-gradient(to left, rgba(245, 245, 247, 0), var(--color-bg));
}
.logo-slider-container:after {
    right: 0;
    background: linear-gradient(to right, rgba(245, 245, 247, 0), var(--color-bg));
}

/* --- Collaboration Cards --- */
.collab-card {
    display: flex;
    flex-direction: column;
    gap: 12px;
    align-items: stretch;
    background: var(--color-surface);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.07);
    padding: 22px 24px 22px 24px;
    width: 520px;
    min-width: 380px;
    height: 280px;
    box-sizing: border-box;
    flex: 0 0 auto;
    overflow: hidden;
    transition: transform var(--transition), box-shadow var(--transition);
}
.collab-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.12);
}

.collab-title {
    display: block;
    width: 100%;
    font-weight: 800;
    color: var(--color-accent);
    text-align: center;
    font-size: 1.05em;
    margin: 0;
}

.collab-body {
    display: flex;
    gap: 16px;
    align-items: center;
    flex: 1;
    min-height: 0;
    padding-left: 16px;
}

.collab-logo {
    flex: 0 0 80px;
    width: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.collab-logo img {
    width: 80px;
    height: 80px;
    object-fit: contain;
}

.collab-desc {
    font-size: 0.88em;
    color: var(--color-text-muted);
    line-height: 1.4em;
    flex: 1;
    min-width: 0;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 10;
    -webkit-box-orient: vertical;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
    text-align: center;
    padding: 24px 20px 40px;
    color: var(--color-text-muted);
    font-size: 0.88em;
    margin-top: 36px;
    width: 100%;
}

.site-footer p {
    margin: 0;
}

.site-footer a {
    color: var(--color-accent);
    margin: 0 10px;
    text-decoration: none;
}
.site-footer a:hover {
    text-decoration: underline;
}

/* ==========================================================================
   Worked-with cards (if used)
   ========================================================================== */
.worked-section {
    width: 80%;
    max-width: 1100px;
    margin: 20px auto 8px;
    text-align: center;
}
.worked-section h3 {
    margin: 6px 0 12px;
    font-size: 1.05em;
    color: var(--color-text-muted);
}
.worked-list {
    display: flex;
    gap: 12px;
    justify-content: center;
    align-items: stretch;
    flex-wrap: wrap;
    padding: 6px 0 18px;
}
.worked-card {
    background: var(--color-surface);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    box-shadow: 0 2px 6px var(--color-shadow);
    padding: 12px;
    width: 220px;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: flex-start;
}
.worked-title {
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-text);
}
.worked-desc {
    font-size: 0.95em;
    color: var(--color-text-muted);
    line-height: 1.2em;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

/* Tablets & small laptops */
@media (max-width: 900px) {
    .container {
        flex-direction: column;
        align-items: center;
        gap: 32px;
        width: 90%;
    }

    .photo {
        width: 50%;
        max-width: 320px;
    }

    .content {
        width: 100%;
        align-items: center;
    }

    .signature {
        font-size: clamp(2em, 6vw, 3.4em);
    }

    .collab-card {
        width: 440px;
        min-width: 320px;
    }
}

/* Phones */
@media (max-width: 640px) {
    .main-wrapper {
        padding: 32px 16px;
        min-height: auto;
    }

    .container {
        width: 95%;
        gap: 24px;
    }

    .photo {
        width: 60%;
        max-width: 260px;
    }

    .signature {
        font-size: 2.2em;
    }

    .id-card {
        padding: 20px;
    }

    .service-box {
        width: 75%;
        padding: 16px;
    }

    .contact-links {
        flex-direction: column;
        gap: 8px;
    }

    .contact-links a {
        width: 100%;
        justify-content: center;
    }

    .achievements-section,
    .collab-section {
        min-height: auto;
        padding: 40px 16px;
    }

    .badge-card { width: 140px; }
    .badge-iframe-wrap iframe,
    .badge-iframe-wrap img,
    .badge-iframe-wrap div[data-share-badge-id] {
        width: 120px;
        height: auto;
    }

    .collab-card {
        width: 100%;
        min-width: unset;
        padding: 16px;
    }

    .logo-slider {
        position: static;
        flex-direction: column;
        animation: none;
    }

    .logo-slider-container {
        height: auto;
        overflow: visible;
    }

    .collab-body {
        flex-direction: column;
        align-items: center;
    }

    .collab-logo,
    .collab-desc {
        flex: none;
        max-width: 100%;
        text-align: center;
    }

    .worked-card { width: 100%; }
}

/* Small badge scaling */
@media (max-width: 480px) {
    .accredible-embed,
    .accredible-badge,
    .achievements-badges > div[data-share-badge-id] {
        width: 120px;
        height: auto;
    }
}