:root {
    --blue: 0, 194, 255;
    --green: 57, 255, 20;
}

html {
    scroll-behavior: smooth;
}

/* Subtle scanline / cyber grain */
body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 40;
    opacity: 0.08;
    background:
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px) 0 0 / 100% 3px,
        radial-gradient(800px 500px at 30% 20%, rgba(var(--blue),0.10), transparent 65%),
        radial-gradient(900px 600px at 70% 30%, rgba(var(--green),0.07), transparent 60%);
    mix-blend-mode: screen;
}

/* "Light mode" toggle: invert-only (keeps Tailwind utilities intact) */
body.light-mode {
    filter: invert(1) hue-rotate(180deg);
}

canvas#bg-canvas {
    position: fixed;
    inset: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    opacity: 0.85;
}

#scroll-progress {
    position: fixed;
    top: 0;
    left: 0;
    height: 2px;
    width: 0%;
    z-index: 60;
    background: linear-gradient(90deg, rgba(var(--blue),1), rgba(var(--green),1));
    box-shadow: 0 0 24px rgba(var(--blue),0.35);
}

#cursor-glow {
    position: fixed;
    top: 0;
    left: 0;
    width: 260px;
    height: 260px;
    z-index: 10;
    pointer-events: none;
    opacity: 0;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle at center, rgba(var(--blue),0.14), transparent 60%);
    filter: blur(10px);
    transition: opacity 200ms ease;
}

/* Reusable “components” */
.navlink {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.75rem;
    border-radius: 0.9rem;
    color: rgba(226, 232, 240, 0.78);
    font-size: 0.875rem;
    transition: transform 180ms ease, background 180ms ease, color 180ms ease, box-shadow 180ms ease;
}
.navlink:hover {
    background: rgba(255,255,255,0.06);
    color: rgba(255,255,255,0.92);
    box-shadow: 0 0 0 1px rgba(var(--blue),0.18);
}
.navlink.active {
    background: rgba(255,255,255,0.08);
    color: rgba(255,255,255,0.96);
    box-shadow: 0 0 0 1px rgba(var(--green),0.18), 0 12px 30px rgba(var(--blue),0.10);
}

.glass-card {
    border-radius: 1.25rem;
    border: 1px solid rgba(255,255,255,0.10);
    background: rgba(255,255,255,0.05);
    backdrop-filter: blur(14px);
    -webkit-backdrop-filter: blur(14px);
    box-shadow: 0 0 0 1px rgba(0,0,0,0.20) inset;
}

.hover-raise {
    transition: transform 220ms ease, border-color 220ms ease, background 220ms ease, box-shadow 220ms ease;
}
.hover-raise:hover {
    transform: translateY(-4px);
    border-color: rgba(var(--blue),0.28);
    box-shadow: 0 0 0 1px rgba(var(--blue),0.14), 0 26px 70px rgba(0,0,0,0.45);
}

.section-wrap {
    padding: 5.5rem 0;
}
section[id] {
    scroll-margin-top: 92px;
}
.section-head .kicker {
    font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, monospace;
    letter-spacing: 0.22em;
    font-size: 0.75rem;
    color: rgba(226,232,240,0.65);
}
.section-head .title {
    margin-top: 0.6rem;
    font-size: clamp(1.8rem, 3.8vw, 2.7rem);
    font-weight: 800;
    letter-spacing: -0.02em;
}
.section-head .subtitle {
    margin-top: 0.6rem;
    max-width: 58ch;
    color: rgba(226,232,240,0.68);
}

.chip {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border-radius: 999px;
    border: 1px solid rgba(255,255,255,0.10);
    background: rgba(255,255,255,0.04);
    padding: 0.5rem 0.85rem;
    font-size: 0.875rem;
    color: rgba(226,232,240,0.80);
    transition: transform 180ms ease, background 180ms ease, border-color 180ms ease;
}
.chip:hover {
    transform: translateY(-1px);
    background: rgba(255,255,255,0.07);
    border-color: rgba(var(--blue),0.25);
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border-radius: 999px;
    border: 1px solid rgba(255,255,255,0.10);
    background: rgba(0,0,0,0.28);
    padding: 0.35rem 0.75rem;
    font-size: 0.75rem;
    color: rgba(226,232,240,0.75);
}
.tag {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    border: 1px solid rgba(255,255,255,0.10);
    padding: 0.25rem 0.6rem;
    font-size: 0.75rem;
    color: rgba(226,232,240,0.72);
    background: rgba(255,255,255,0.03);
}
.pill {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 0.4rem 0.75rem;
    font-size: 0.8rem;
    border: 1px solid rgba(255,255,255,0.10);
    background: rgba(255,255,255,0.04);
    color: rgba(226,232,240,0.78);
}

.iconbox {
    display: inline-flex;
    height: 2.35rem;
    width: 2.35rem;
    align-items: center;
    justify-content: center;
    border-radius: 0.95rem;
    border: 1px solid rgba(255,255,255,0.10);
    background: rgba(255,255,255,0.05);
    color: rgba(var(--blue),0.95);
    box-shadow: 0 0 0 1px rgba(0,0,0,0.22) inset;
}

.label {
    display: block;
    font-size: 0.8rem;
    color: rgba(226,232,240,0.72);
    margin-bottom: 0.35rem;
}
.input {
    width: 100%;
    border-radius: 0.95rem;
    border: 1px solid rgba(255,255,255,0.10);
    background: rgba(0,0,0,0.25);
    color: rgba(255,255,255,0.92);
    padding: 0.8rem 0.95rem;
    outline: none;
    transition: border-color 180ms ease, box-shadow 180ms ease, background 180ms ease;
}
.input:focus {
    border-color: rgba(var(--blue),0.40);
    box-shadow: 0 0 0 4px rgba(var(--blue),0.12);
}

.mini-card {
    border-radius: 1rem;
    border: 1px solid rgba(255,255,255,0.10);
    background: rgba(255,255,255,0.04);
    padding: 0.85rem 1rem;
    color: rgba(226,232,240,0.82);
    font-size: 0.9rem;
}

/* Hero console bars */
.metric .bar {
    margin-top: 0.55rem;
    height: 8px;
    border-radius: 999px;
    background: rgba(255,255,255,0.06);
    overflow: hidden;
}
.metric .bar > span {
    display: block;
    height: 100%;
    width: 0%;
    border-radius: 999px;
    background: linear-gradient(90deg, rgba(var(--blue),1), rgba(var(--green),1));
    box-shadow: 0 0 26px rgba(var(--blue),0.25);
}
.metric .bar.alt > span {
    background: linear-gradient(90deg, rgba(var(--blue),1), rgba(var(--blue),0.45));
}

/* Timeline (details/summary) */
.timeline {
    position: relative;
    max-width: 900px;
}
.timeline-line {
    position: absolute;
    left: 16px;
    top: 0;
    bottom: 0;
    width: 1px;
    background: rgba(255,255,255,0.10);
}
.timeline-item {
    position: relative;
    margin-left: 0;
    padding: 1.4rem 1.4rem 1.4rem 2.4rem;
}
.timeline-item::before {
    content: "";
    position: absolute;
    left: 10px;
    top: 1.55rem;
    width: 14px;
    height: 14px;
    border-radius: 999px;
    background: rgba(var(--blue),1);
    box-shadow: 0 0 24px rgba(var(--blue),0.55);
}
.timeline-item summary {
    list-style: none;
    cursor: pointer;
}
.timeline-item summary::-webkit-details-marker {
    display: none;
}
.timeline-summary {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
}
.timeline-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    border-radius: 999px;
    border: 1px solid rgba(255,255,255,0.10);
    background: rgba(255,255,255,0.03);
    padding: 0.35rem 0.8rem;
    font-size: 0.75rem;
    color: rgba(226,232,240,0.70);
}
details[open] .timeline-pill {
    border-color: rgba(var(--green),0.25);
    color: rgba(226,232,240,0.85);
}

/* Education rail */
.edu {
    position: relative;
    padding-left: 1.25rem;
}
.edu::before {
    content: "";
    position: absolute;
    left: 0.4rem;
    top: 0;
    bottom: 0;
    width: 1px;
    background: rgba(255,255,255,0.10);
}
.edu-item {
    position: relative;
    margin-bottom: 1rem;
}
.edu-item::before {
    content: "";
    position: absolute;
    left: -0.25rem;
    top: 1.35rem;
    width: 10px;
    height: 10px;
    border-radius: 999px;
    background: rgba(var(--green),1);
    box-shadow: 0 0 20px rgba(var(--green),0.35);
}

/* Skill bars */
.skillbar {
    height: 10px;
    border-radius: 999px;
    background: rgba(255,255,255,0.06);
    overflow: hidden;
}
.skillbar > span {
    display: block;
    height: 100%;
    width: 0%;
    border-radius: 999px;
    background: linear-gradient(90deg, rgba(var(--blue),1), rgba(var(--green),1));
    box-shadow: 0 0 26px rgba(var(--blue),0.22);
}
.skillbar.alt > span {
    background: linear-gradient(90deg, rgba(var(--green),1), rgba(var(--blue),0.55));
}

/* Reveal animation (JS toggles .is-visible) */
[data-reveal] {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity 650ms ease, transform 650ms ease;
}
[data-reveal].is-visible {
    opacity: 1;
    transform: translateY(0);
}

/* Floating tech icons */
.floating-icons {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    opacity: 0.18;
    filter: drop-shadow(0 0 18px rgba(var(--blue),0.25));
}
.floating-icons i {
    position: absolute;
    font-size: clamp(18px, 2.4vw, 34px);
    color: rgba(226,232,240,0.65);
    animation: floaty 9s ease-in-out infinite;
}
.floating-icons i:nth-child(1) { left: 8%;  top: 22%; animation-delay: 0s; }
.floating-icons i:nth-child(2) { left: 78%; top: 18%; animation-delay: 1.2s; }
.floating-icons i:nth-child(3) { left: 64%; top: 70%; animation-delay: 2.1s; }
.floating-icons i:nth-child(4) { left: 14%; top: 76%; animation-delay: 1.6s; }
.floating-icons i:nth-child(5) { left: 48%; top: 12%; animation-delay: 0.8s; }
.floating-icons i:nth-child(6) { left: 88%; top: 62%; animation-delay: 2.8s; }

@keyframes floaty {
    0%, 100% { transform: translate3d(0,0,0) rotate(-2deg); }
    50% { transform: translate3d(0,-14px,0) rotate(2deg); }
}

/* Toast */
.toast {
    position: fixed;
    right: 16px;
    bottom: 16px;
    max-width: 360px;
    padding: 0.9rem 1rem;
    border-radius: 1rem;
    border: 1px solid rgba(255,255,255,0.12);
    background: rgba(0,0,0,0.55);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: rgba(255,255,255,0.92);
    box-shadow: 0 22px 70px rgba(0,0,0,0.55);
    opacity: 0;
    transform: translateY(12px);
    pointer-events: none;
    transition: opacity 200ms ease, transform 200ms ease;
    z-index: 80;
}
.toast.show {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .hover-raise, .navlink, .chip, [data-reveal], .floating-icons i { transition: none !important; animation: none !important; }
    #cursor-glow { display: none; }
}