/* ==========================================================================
   Page sections — about, portfolio, skills, achievements, contact, footer.
   Mobile-first.
   ========================================================================== */

/* ── Experience ──────────────────────────────────────────────────────── */
.experience-timeline {
    display: flex;
    flex-direction: column;
    gap: var(--space-8);
    max-width: 720px;
    margin-inline: auto;
}

.experience-item {
    display: flex;
    gap: var(--space-6);
    align-items: flex-start;
}

.experience-logo {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    margin-top: 0.2rem;
    border-radius: var(--radius-full);
    border: 1px solid var(--border-color);
    background: var(--surface-color);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: 0.03em;
}

.experience-details h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: var(--space-1);
}

.experience-meta {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: var(--space-3);
}

.experience-details p:last-child {
    font-size: 0.95rem;
    color: var(--text-muted);
    line-height: 1.65;
}

/* ── About ────────────────────────────────────────────────────────────── */
.about-section {
    background-color: var(--surface-color-dark);
}

.about-container {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
    align-items: start;
}

@media (min-width: 768px) {
    .about-container { grid-template-columns: 1fr 2fr; gap: var(--space-12); }
}

.about-image {
    position: relative;
    max-width: 360px;
    margin-inline: auto;
    border-radius: var(--radius-lg);
    overflow: hidden;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-2);
}

.about-image img {
    width: 100%;
    height: auto;
    display: block;
    transition: transform 0.5s var(--ease-out);
}

.about-image:hover img { transform: scale(1.03); }

.about-social {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent);
    padding: var(--space-4);
    display: flex;
    justify-content: center;
    gap: var(--space-4);
}

.about-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    color: #fff;
    font-size: 1.25rem;
    transition: transform var(--dur-base) ease, color var(--dur-base) ease;
}

.about-social a:hover {
    color: var(--accent-color);
    transform: translateY(-3px);
}

.about-text h2 {
    font-size: clamp(1.75rem, 4vw, 2.25rem);
    margin-bottom: var(--space-6);
    position: relative;
    display: inline-block;
    padding-bottom: var(--space-2);
}

.about-text h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 48px;
    height: 3px;
    border-radius: var(--radius-full);
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

.about-text p { margin-bottom: var(--space-4); }

/* ── About highlights — asymmetric two-column grid ──────────────────────── */
.about-highlights-asymmetric {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
    margin-top: var(--space-8);
}

@media (min-width: 640px) {
    .about-highlights-asymmetric { grid-template-columns: 1.2fr 1fr; }
}

.highlight-featured {
    background: var(--surface-color);
    border: 1px solid color-mix(in srgb, var(--primary-color) 30%, var(--border-color));
    border-radius: var(--radius-md);
    padding: var(--space-6);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    gap: var(--space-4);
    transition: box-shadow var(--dur-base) var(--ease-out);
}

.highlight-featured:hover { box-shadow: var(--shadow-2); }

.highlight-stack {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.highlight-small {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-6);
    flex: 1;
    transition: border-color var(--dur-base) ease, box-shadow var(--dur-base) var(--ease-out);
}

.highlight-small:hover {
    border-color: color-mix(in srgb, var(--primary-color) 40%, var(--border-color));
    box-shadow: var(--shadow-1);
}

.highlight-icon-wrap {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: var(--highlight-bg);
    color: var(--primary-color);
    font-size: 1rem;
}

.highlight-featured .highlight-icon-wrap { margin-bottom: var(--space-2); }

.highlight-small-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-3);
}

.highlight-featured h3,
.highlight-small h3 {
    font-size: 1rem;
    font-weight: 700;
    margin: 0;
}

.highlight-featured p,
.highlight-small p {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin: 0;
    line-height: 1.55;
}

.highlight-stat {
    margin-top: var(--space-4);
    padding-top: var(--space-4);
    border-top: 1px solid var(--border-color);
}

.highlight-stat-value {
    display: block;
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.04em;
    line-height: 1;
    margin-bottom: 0.2rem;
}

.highlight-stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* ── Portfolio ────────────────────────────────────────────────────────── */
.portfolio-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
}

@media (min-width: 640px) {
    .portfolio-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
    .portfolio-grid { grid-template-columns: repeat(3, 1fr); }
}

.portfolio-item {
    display: flex;
    flex-direction: column;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-1);
    overflow: hidden;
    transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out),
                border-color var(--dur-base) ease;
}

.portfolio-item:hover,
.portfolio-item:focus-within {
    transform: translateY(-4px);
    box-shadow: var(--shadow-2);
    border-color: color-mix(in srgb, var(--primary-color) 40%, var(--border-color));
}

.portfolio-image-container {
    position: relative;
    overflow: hidden;
}

/* Project tile — icon-only banner (title lives in .portfolio-info, not duplicated) */
.portfolio-banner {
    display: flex;
    align-items: center;
    justify-content: center;
    aspect-ratio: 16 / 9;
    min-height: 0;
}

.portfolio-banner i {
    font-size: 2.5rem;
    color: rgba(255, 255, 255, 0.92);
}

.banner-loyalty   { background: linear-gradient(135deg, #4a1a6b, #9b2fae 55%, #d4a017); }
.banner-apac      { background: linear-gradient(135deg, #7b1a1a, #c0392b 55%, #e67e22); }
.banner-api       { background: linear-gradient(135deg, #0a2744, #0066cc 55%, #00b4d8); }
.banner-perf      { background: linear-gradient(135deg, #1a3a2a, #1a7a4a 55%, #2ecc71); }
.banner-news      { background: linear-gradient(135deg, #1a3a5c, #0d6efd 55%, #198754); }

.portfolio-overlay {
    position: absolute;
    inset: 0;
    background: rgba(15, 23, 42, 0.55);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity var(--dur-base) ease;
}

.portfolio-item:hover .portfolio-overlay,
.portfolio-item:focus-within .portfolio-overlay {
    opacity: 1;
}

.portfolio-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    border-radius: var(--radius-full);
    background: var(--primary-color);
    color: #fff;
    font-size: 1.1rem;
}

.portfolio-link:hover { background: var(--accent-color); color: #fff; }

.portfolio-info {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: var(--space-6);
}

.portfolio-info h3 {
    font-size: 1.15rem;
    margin-bottom: var(--space-2);
}

.portfolio-info p {
    font-size: 0.92rem;
    margin-bottom: var(--space-3);
}

.tech-stack {
    font-size: 0.82rem !important;
    color: var(--text-muted);
    margin-top: auto;
}

.tech-stack strong { color: var(--heading-color); }

.portfolio-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
    margin-top: var(--space-3);
}

.portfolio-links:empty { display: none; }

/* ── Skills — bento grid ─────────────────────────────────────────────────── */
.skills-section { background-color: var(--surface-color-dark); }

.skills-bento {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
}

@media (min-width: 640px) {
    .skills-bento { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
    .skills-bento { grid-template-columns: repeat(4, 1fr); }
}

.skill-block {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-6);
    transition: border-color var(--dur-base) ease;
}

.skill-block:hover {
    border-color: color-mix(in srgb, var(--primary-color) 35%, var(--border-color));
}

/* Featured: spans 2 columns, has a stat heading */
.skill-block-featured {
    grid-column: span 1;
    background: color-mix(in srgb, var(--primary-color) 5%, var(--surface-color));
    border-color: color-mix(in srgb, var(--primary-color) 25%, var(--border-color));
    position: relative;
    overflow: hidden;
}

@media (min-width: 1024px) {
    .skill-block-featured { grid-column: span 2; }
}

.skill-block-featured::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -10%;
    width: 160px;
    height: 160px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--highlight-bg-dark) 0%, transparent 70%);
    pointer-events: none;
}

/* Wide: spans 2 columns on medium+, full on large */
.skill-block-wide {
    grid-column: span 1;
}

@media (min-width: 640px) {
    .skill-block-wide { grid-column: span 2; }
}

@media (min-width: 1024px) {
    .skill-block-wide { grid-column: span 4; }
}

.skill-block-stat {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--primary-color);
    letter-spacing: -0.04em;
    line-height: 1;
    margin-bottom: 0.2rem;
}

.skill-block-stat-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-bottom: var(--space-5);
}

.skill-block h3 {
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: var(--space-4);
}

.skill-pills {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-2);
}

.skill-pill {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--text-color);
    background: var(--surface-color-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    padding: 0.28rem 0.75rem;
    transition: border-color var(--dur-fast) ease, color var(--dur-fast) ease;
}

.skill-pill:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.skill-pill-primary {
    background: var(--highlight-bg);
    border-color: color-mix(in srgb, var(--primary-color) 30%, var(--border-color));
    color: var(--primary-color);
}

/* ── Achievements ─────────────────────────────────────────────────────── */
.achievements-list {
    list-style: none;
    max-width: 820px;
    margin-inline: auto;
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.achievements-list li {
    display: flex;
    gap: var(--space-4);
    align-items: flex-start;
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--space-6);
    box-shadow: var(--shadow-1);
    transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out);
}

.achievements-list li:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-2);
}

.achievement-icon {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: var(--highlight-bg);
    color: var(--primary-color);
    font-size: 1.15rem;
}

.achievement-details h3 { font-size: 1.05rem; margin-bottom: var(--space-2); }
.achievement-details p { font-size: 0.95rem; margin: 0; }

.achievement-link { font-weight: 600; }

/* ── Contact ──────────────────────────────────────────────────────────── */
.contact-section { background-color: var(--surface-color-dark); text-align: center; }

.contact-intro {
    max-width: 560px;
    margin-inline: auto;
    margin-bottom: var(--space-8);
    color: var(--text-muted);
}

.contact-methods {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
    max-width: 720px;
    margin-inline: auto;
}

@media (min-width: 640px) {
    .contact-methods { grid-template-columns: repeat(3, 1fr); }
}

.contact-method {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-6);
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-1);
    transition: transform var(--dur-base) var(--ease-out), box-shadow var(--dur-base) var(--ease-out),
                border-color var(--dur-base) ease;
}

.contact-method:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-2);
    border-color: color-mix(in srgb, var(--primary-color) 40%, var(--border-color));
}

.contact-method i {
    font-size: 1.4rem;
    color: var(--primary-color);
}

.contact-method a {
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-color);
    overflow-wrap: anywhere;
}

.contact-method a:hover { color: var(--primary-color); }

/* ── Footer ───────────────────────────────────────────────────────────── */
.site-footer {
    background: var(--surface-color);
    border-top: 1px solid var(--border-color);
    padding: var(--space-8) 0;
}

.site-footer .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-4);
    text-align: center;
}

@media (min-width: 640px) {
    .site-footer .container {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

.site-footer p { margin: 0; font-size: 0.9rem; color: var(--text-muted); }

.footer-social {
    display: flex;
    gap: var(--space-2);
}

.footer-social a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: var(--radius-full);
    color: var(--text-muted);
    font-size: 1.2rem;
    transition: color var(--dur-fast) ease, background-color var(--dur-fast) ease;
}

.footer-social a:hover {
    color: var(--primary-color);
    background: var(--highlight-bg);
}