/* ============ Base ============ */
html { scroll-behavior: smooth; scroll-padding-top: 6rem; }
body { -webkit-font-smoothing: antialiased; }

::selection { background: rgba(56, 189, 248, 0.3); color: inherit; }

::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(120, 120, 120, 0.35); border-radius: 999px; }
::-webkit-scrollbar-thumb:hover { background: rgba(56, 189, 248, 0.6); }

/* ============ Nav ============ */
.nav-link {
    padding: 0.375rem 0.75rem;
    border-radius: 0.5rem;
    color: rgb(82 82 82);
    transition: all 0.2s ease;
}
.dark .nav-link { color: rgb(212 212 212); }
.nav-link:hover { color: rgb(23 23 23); background-color: rgba(0,0,0,0.05); }
.dark .nav-link:hover { color: #fff; background-color: rgba(255,255,255,0.1); }

#navbar.scrolled nav { box-shadow: 0 10px 30px -10px rgba(0,0,0,0.15); }

/* ============ Gradient text ============ */
.gradient-text {
    background: linear-gradient(135deg, #38bdf8 0%, #2563eb 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}

/* ============ Section headers ============ */
.section-title {
    font-size: 2rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    line-height: 1.1;
}
@media (min-width: 640px) { .section-title { font-size: 2.5rem; } }
@media (min-width: 1024px) { .section-title { font-size: 3rem; } }
.section-sub {
    margin-top: 0.75rem;
    font-size: 1rem;
    color: rgb(82 82 82);
    max-width: 42rem;
}
.dark .section-sub { color: rgb(163 163 163); }
@media (min-width: 640px) { .section-sub { font-size: 1.125rem; } }

/* ============ Role pills (hero) ============ */
.role-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.85rem;
    border-radius: 999px;
    font-size: 0.825rem;
    font-weight: 600;
    border: 1px solid rgba(56, 189, 248, 0.35);
    background:
        linear-gradient(rgba(255,255,255,0.7), rgba(255,255,255,0.7)) padding-box,
        linear-gradient(135deg, #38bdf8, #2563eb) border-box;
    border: 1px solid transparent;
    color: rgb(38 38 38);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.dark .role-pill {
    background:
        linear-gradient(rgb(20,20,22), rgb(20,20,22)) padding-box,
        linear-gradient(135deg, #38bdf8, #2563eb) border-box;
    color: rgb(245 245 245);
}
.role-pill:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 22px -10px rgba(56, 189, 248, 0.5);
}
.role-pill svg { color: #38bdf8; }
.dark .role-pill svg { color: #2563eb; }

/* ============ Card base ============ */
.card-base {
    position: relative;
    border-radius: 1rem;
    border: 1px solid rgba(0,0,0,0.06);
    background-color: rgba(255,255,255,0.6);
    backdrop-filter: blur(8px);
}
.dark .card-base {
    border-color: rgba(255,255,255,0.08);
    background-color: rgba(255,255,255,0.03);
}

/* ============ Service cards ============ */
.service-card {
    position: relative;
    padding: 1.75rem;
    border-radius: 1rem;
    border: 1px solid rgba(0,0,0,0.06);
    background-color: rgba(255,255,255,0.6);
    backdrop-filter: blur(8px);
    overflow: hidden;
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}
.dark .service-card {
    border-color: rgba(255,255,255,0.08);
    background-color: rgba(255,255,255,0.03);
}
.service-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top right, rgba(56, 189, 248, 0.08), transparent 60%);
    pointer-events: none;
}
.service-card:hover {
    transform: translateY(-4px);
    border-color: rgba(56, 189, 248, 0.4);
    box-shadow: 0 20px 40px -20px rgba(56, 189, 248, 0.25);
}
.service-icon {
    position: relative;
    display: inline-flex;
    height: 2.75rem;
    width: 2.75rem;
    align-items: center;
    justify-content: center;
    border-radius: 0.85rem;
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.2), rgba(37, 99, 235, 0.2));
    color: #38bdf8;
    margin-bottom: 1.1rem;
}
.dark .service-icon { color: #2563eb; }
.service-title {
    position: relative;
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.65rem;
    line-height: 1.3;
}
.service-desc {
    position: relative;
    font-size: 0.925rem;
    color: rgb(75 75 75);
    line-height: 1.55;
    flex: 1;
}
.dark .service-desc { color: rgb(190 190 190); }
.service-link {
    position: relative;
    margin-top: 1.1rem;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: #38bdf8;
    transition: gap 0.2s ease;
}
.service-link:hover { gap: 0.6rem; }

/* ============ Tip cards (Principles marquee) ============ */
.tip-card {
    flex-shrink: 0;
    width: 22rem;
    padding: 1.25rem 1.4rem;
    border-radius: 1rem;
    border: 1px solid rgba(0,0,0,0.06);
    background-color: rgba(255,255,255,0.7);
    backdrop-filter: blur(8px);
    transition: border-color 0.3s ease;
}
.dark .tip-card {
    border-color: rgba(255,255,255,0.08);
    background-color: rgba(255,255,255,0.03);
}
.tip-card:hover {
    border-color: rgba(56, 189, 248, 0.4);
}
.tip-title {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 0.35rem;
    background: linear-gradient(135deg, #38bdf8, #2563eb);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
}
.tip-body {
    font-size: 0.85rem;
    line-height: 1.5;
    color: rgb(75 75 75);
}
.dark .tip-body { color: rgb(190 190 190); }

/* ============ Experience rows ============ */
.exp-row {
    display: flex;
    gap: 1rem;
    align-items: stretch;
    padding: 1.25rem;
    border-radius: 1rem;
    border: 1px solid rgba(0,0,0,0.06);
    background-color: rgba(255,255,255,0.6);
    backdrop-filter: blur(8px);
    transition: border-color 0.3s ease, transform 0.3s ease;
}
.dark .exp-row {
    border-color: rgba(255,255,255,0.08);
    background-color: rgba(255,255,255,0.03);
}
.exp-row:hover {
    border-color: rgba(56, 189, 248, 0.4);
    transform: translateX(2px);
}
.exp-mark {
    flex-shrink: 0;
    height: 3rem;
    width: 3rem;
    border-radius: 0.85rem;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, rgba(56, 189, 248, 0.18), rgba(37, 99, 235, 0.18));
    color: #38bdf8;
    font-weight: 800;
    font-size: 1.1rem;
}
.dark .exp-mark { color: #2563eb; }
.exp-body { flex: 1; min-width: 0; }
.exp-head {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: flex-start;
    gap: 0.5rem;
    margin-bottom: 0.4rem;
}
.exp-row-role { font-size: 1.05rem; font-weight: 700; }
.exp-row-sub {
    font-size: 0.85rem;
    color: rgb(82 82 82);
    margin-top: 0.15rem;
}
.dark .exp-row-sub { color: rgb(163 163 163); }
.exp-row-date {
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.2rem 0.6rem;
    border-radius: 999px;
    background-color: rgba(56, 189, 248, 0.12);
    color: #38bdf8;
    white-space: nowrap;
}
.exp-row-desc {
    font-size: 0.9rem;
    color: rgb(75 75 75);
    line-height: 1.55;
}
.dark .exp-row-desc { color: rgb(190 190 190); }

/* ============ Education card ============ */
.edu-card {
    position: relative;
    display: flex;
    gap: 1.25rem;
    align-items: flex-start;
    padding: 1.75rem;
    border-radius: 1rem;
    border: 1px solid rgba(0,0,0,0.06);
    background-color: rgba(255,255,255,0.6);
    backdrop-filter: blur(8px);
    overflow: hidden;
}
.dark .edu-card {
    border-color: rgba(255,255,255,0.08);
    background-color: rgba(255,255,255,0.03);
}
.edu-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(circle at top right, rgba(56, 189, 248, 0.06), transparent 60%);
    pointer-events: none;
}
.edu-mark {
    flex-shrink: 0;
    height: 3.25rem;
    width: 3.25rem;
    border-radius: 0.85rem;
    display: grid;
    place-items: center;
    background: linear-gradient(135deg, #38bdf8, #2563eb);
    color: #fff;
    font-weight: 800;
    font-size: 1.25rem;
    box-shadow: 0 10px 25px -10px rgba(56, 189, 248, 0.5);
}
.edu-body { flex: 1; position: relative; }
.edu-title { font-size: 1.15rem; font-weight: 700; }
.edu-org {
    margin-top: 0.2rem;
    font-size: 0.9rem;
    color: rgb(82 82 82);
}
.dark .edu-org { color: rgb(163 163 163); }
.edu-desc {
    margin-top: 0.75rem;
    font-size: 0.9rem;
    color: rgb(75 75 75);
    line-height: 1.55;
    max-width: 38rem;
}
.dark .edu-desc { color: rgb(190 190 190); }
.edu-date {
    position: relative;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 0.25rem 0.65rem;
    border-radius: 999px;
    background-color: rgba(56, 189, 248, 0.12);
    color: #38bdf8;
    white-space: nowrap;
    align-self: flex-start;
}

/* ============ Marquee ============ */
.marquee-mask {
    -webkit-mask-image: linear-gradient(to right, transparent 0%, black 6%, black 94%, transparent 100%);
            mask-image: linear-gradient(to right, transparent 0%, black 6%, black 94%, transparent 100%);
}
.marquee { overflow: hidden; width: 100%; }
.marquee-track {
    display: flex;
    gap: 0.75rem;
    width: max-content;
    animation: marquee 40s linear infinite;
}
.marquee-reverse-track { animation: marquee-reverse 45s linear infinite; }
.marquee:hover .marquee-track { animation-play-state: paused; }

@keyframes marquee {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
}
@keyframes marquee-reverse {
    from { transform: translateX(-50%); }
    to { transform: translateX(0); }
}

.tech-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 0.75rem;
    font-size: 0.875rem;
    font-weight: 500;
    white-space: nowrap;
    border: 1px solid rgba(0,0,0,0.06);
    background-color: rgba(255,255,255,0.6);
    backdrop-filter: blur(8px);
    transition: border-color 0.3s ease, color 0.3s ease, transform 0.3s ease;
}
.tech-logo {
    width: 1.05rem;
    height: 1.05rem;
    object-fit: contain;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.tech-logo-inline { color: currentColor; }
.tech-logo-inline svg {
    width: 100%;
    height: 100%;
    display: block;
}
.tech-logo-sm {
    width: 0.85rem;
    height: 0.85rem;
}
.project-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}
/* Invert single-color brand marks that would disappear on dark backgrounds */
.dark .tech-pill img[src*="githubactions"],
.dark .tech-pill img[src*="github"],
.dark .tech-pill img[src*="anthropic"],
.dark .tech-pill img[src*="openai"],
.dark .tech-pill img[src*="dotnet"],
.dark .tech-pill img[src*="nginx"],
.dark .tech-pill img[src*="argo"],
.dark .tech-pill img[src*="flux"],
.dark .tech-pill img[src*="prometheus"],
.dark .tech-pill img[src*="opentelemetry"],
.dark .tech-pill img[src*="apachekafka"],
.dark .tech-pill img[src*="csharp"],
.dark .tech-pill img[src*="owasp"],
.dark .tech-pill img[src*="microsoftsqlserver"] {
    filter: brightness(0) invert(1);
}
html:not(.dark) .tech-pill img[src*="githubactions"],
html:not(.dark) .tech-pill img[src*="github"],
html:not(.dark) .tech-pill img[src*="anthropic"],
html:not(.dark) .tech-pill img[src*="openai"] {
    /* keep their default color (already dark enough on light bg) */
}
.dark .tech-pill {
    border-color: rgba(255,255,255,0.08);
    background-color: rgba(255,255,255,0.04);
}
.tech-pill:hover {
    border-color: rgba(56, 189, 248, 0.5);
    color: #38bdf8;
    transform: translateY(-2px);
}

/* AI tool pills — gradient border accent */
.tech-pill-ai {
    gap: 0.45rem;
    position: relative;
    border-color: rgba(56, 189, 248, 0.35);
    background:
        linear-gradient(rgba(255,255,255,0.65), rgba(255,255,255,0.65)) padding-box,
        linear-gradient(135deg, #38bdf8, #2563eb) border-box;
    border: 1px solid transparent;
}
.dark .tech-pill-ai {
    background:
        linear-gradient(rgb(20,20,22), rgb(20,20,22)) padding-box,
        linear-gradient(135deg, #38bdf8, #2563eb) border-box;
}
.tech-pill-ai:hover {
    transform: translateY(-2px);
    color: inherit;
    box-shadow: 0 6px 20px -8px rgba(56, 189, 248, 0.45);
}
.ai-dot {
    display: inline-block;
    width: 0.45rem;
    height: 0.45rem;
    border-radius: 999px;
    background: linear-gradient(135deg, #38bdf8, #2563eb);
    box-shadow: 0 0 8px rgba(56, 189, 248, 0.6);
    flex-shrink: 0;
}

/* ============ Project cards ============ */
.project-card {
    overflow: hidden;
    border-radius: 1.25rem;
    border: 1px solid rgba(0,0,0,0.06);
    background-color: rgba(255,255,255,0.6);
    backdrop-filter: blur(8px);
    transition: transform 0.35s ease, border-color 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
}
.dark .project-card {
    border-color: rgba(255,255,255,0.08);
    background-color: rgba(255,255,255,0.03);
}
.project-card:hover {
    transform: translateY(-4px);
    border-color: rgba(56, 189, 248, 0.45);
    box-shadow: 0 25px 50px -25px rgba(56, 189, 248, 0.35);
}
.project-cover {
    position: relative;
    height: 11rem;
    display: flex;
    align-items: flex-end;
    padding: 1rem 1.25rem;
    overflow: hidden;
}
.project-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 0;
    opacity: 0.55;
    transition: opacity 0.4s ease, transform 0.6s ease;
}
.project-card:hover .project-img {
    opacity: 0.85;
    transform: scale(1.04);
}
.project-cover::after {
    content: '';
    position: absolute;
    inset: 0;
    z-index: 1;
    background:
        linear-gradient(180deg, rgba(0,0,0,0) 0%, rgba(0,0,0,0.35) 100%),
        radial-gradient(circle at 30% 20%, rgba(255,255,255,0.18), transparent 50%);
    pointer-events: none;
}
.project-cover-1 { background: linear-gradient(135deg, #38bdf8 0%, #6d28d9 60%, #1e1b4b 100%); }
.project-cover-2 { background: linear-gradient(135deg, #0ea5e9 0%, #1e3a8a 60%, #0c1e3a 100%); }
.project-cover-3 { background: linear-gradient(135deg, #2563eb 0%, #ea580c 60%, #2c0f01 100%); }
.project-cover-4 { background: linear-gradient(135deg, #10b981 0%, #047857 60%, #022c22 100%); }
.project-cover-5 { background: linear-gradient(135deg, #ec4899 0%, #38bdf8 50%, #0c1e3a 100%); }
.project-tag {
    position: relative;
    z-index: 1;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.3rem 0.7rem;
    border-radius: 999px;
    background-color: rgba(0, 0, 0, 0.35);
    color: #fff;
    backdrop-filter: blur(6px);
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}
.project-content {
    padding: 1.25rem 1.4rem 1.4rem;
    display: flex;
    flex-direction: column;
    flex: 1;
}
.project-title { font-size: 1.1rem; font-weight: 700; }
.project-desc {
    margin-top: 0.5rem;
    font-size: 0.9rem;
    color: rgb(75 75 75);
    line-height: 1.55;
    flex: 1;
}
.dark .project-desc { color: rgb(190 190 190); }
.project-tech {
    margin-top: 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}
.project-pill {
    font-size: 0.7rem;
    padding: 0.25rem 0.55rem;
    border-radius: 0.5rem;
    border: 1px solid rgba(0,0,0,0.08);
    background-color: rgba(0,0,0,0.025);
    color: rgb(64 64 64);
}
.dark .project-pill {
    border-color: rgba(255,255,255,0.08);
    background-color: rgba(255,255,255,0.04);
    color: rgb(212 212 212);
}

/* ============ Contact cards ============ */
.contact-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 1.5rem;
    border-radius: 1rem;
    border: 1px solid rgba(0,0,0,0.06);
    background-color: rgba(255,255,255,0.6);
    backdrop-filter: blur(8px);
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}
.dark .contact-card {
    border-color: rgba(255,255,255,0.08);
    background-color: rgba(255,255,255,0.03);
}
.contact-card:hover {
    transform: translateY(-4px);
    border-color: rgba(56, 189, 248, 0.4);
    box-shadow: 0 20px 40px -20px rgba(56, 189, 248, 0.25);
}
.contact-icon {
    height: 1.5rem;
    width: 1.5rem;
    margin-bottom: 0.75rem;
    color: #38bdf8;
}
.contact-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: rgb(115 115 115);
    margin-bottom: 0.25rem;
}
.contact-value {
    font-weight: 600;
    color: rgb(23 23 23);
    word-break: break-all;
}
.dark .contact-value { color: #fff; }

/* ============ Reveal-on-scroll ============ */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.7s ease-out, transform 0.7s ease-out;
}
.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    .reveal { opacity: 1; transform: none; transition: none; }
    .marquee-track { animation: none; }
}