/* =========================================================
   Krishnatech — Under Construction
   Self-contained, dark, premium, responsive.
   No external assets, no fonts, no analytics.
   ========================================================= */

/* ---------- Tokens ---------- */
:root {
    --c-bg-0: #060814;
    --c-bg-1: #0b1020;
    --c-bg-2: #11172e;
    --c-surface: rgba(255, 255, 255, 0.04);
    --c-surface-2: rgba(255, 255, 255, 0.06);
    --c-border: rgba(255, 255, 255, 0.10);
    --c-border-strong: rgba(255, 255, 255, 0.18);
    --c-text: #e9ecf5;
    --c-text-dim: #aab1c6;
    --c-text-mute: #8088a3;
    --c-accent: #5b6cff;
    --c-accent-2: #36d1dc;
    --c-accent-3: #a06bff;
    --c-success: #38e1a1;

    --grad-accent: linear-gradient(135deg, #36d1dc 0%, #5b6cff 55%, #a06bff 100%);
    --grad-soft: radial-gradient(120% 80% at 50% 0%, rgba(91, 108, 255, 0.22), transparent 60%);

    --radius-sm: 10px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --radius-xl: 28px;

    --shadow-sm: 0 1px 2px rgba(0,0,0,0.3);
    --shadow-md: 0 10px 30px rgba(0,0,0,0.35);
    --shadow-lg: 0 30px 80px rgba(0,0,0,0.5);

    --ease-out: cubic-bezier(.22,1,.36,1);
    --ease-in-out: cubic-bezier(.65,.05,.36,1);

    --container: 1180px;
    --gutter: clamp(16px, 4vw, 32px);

    --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
    --font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

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

html { -webkit-text-size-adjust: 100%; }

html, body { height: 100%; }

body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.55;
    color: var(--c-text);
    background: var(--c-bg-0);
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
    min-height: 100dvh;
    display: flex;
    flex-direction: column;
}

img, svg { display: block; max-width: 100%; }

a {
    color: inherit;
    text-decoration: none;
    transition: color .2s var(--ease-out);
}

a:hover { color: #fff; }

a:focus-visible,
button:focus-visible {
    outline: 2px solid var(--c-accent-2);
    outline-offset: 3px;
    border-radius: 6px;
}

p { margin: 0 0 1em; }

h1, h2, h3 { margin: 0; font-weight: 700; letter-spacing: -0.01em; line-height: 1.15; }

::selection { background: rgba(91, 108, 255, 0.4); color: #fff; }

/* ---------- Skip link ---------- */
.skip-link {
    position: absolute;
    left: 12px;
    top: -40px;
    background: var(--c-accent);
    color: #fff;
    padding: 10px 14px;
    border-radius: 8px;
    z-index: 100;
    transition: top .2s var(--ease-out);
}
.skip-link:focus { top: 12px; }

/* ---------- Background ---------- */
.bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    overflow: hidden;
    pointer-events: none;
}
.bg__grid {
    position: absolute;
    inset: -2px;
    background-image:
        linear-gradient(rgba(255,255,255,0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.04) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 75%);
    -webkit-mask-image: radial-gradient(ellipse 70% 60% at 50% 30%, #000 30%, transparent 75%);
    opacity: .6;
}
.bg__mesh {
    position: absolute;
    inset: -20%;
    background:
        radial-gradient(40% 35% at 20% 20%, rgba(91,108,255,0.25), transparent 60%),
        radial-gradient(35% 30% at 80% 30%, rgba(54,209,220,0.18), transparent 60%),
        radial-gradient(30% 25% at 70% 80%, rgba(160,107,255,0.18), transparent 60%);
    filter: blur(40px);
    animation: meshDrift 22s ease-in-out infinite alternate;
}
.bg__particles {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    opacity: .65;
}
.bg__glow {
    position: absolute;
    width: 60vmax;
    height: 60vmax;
    border-radius: 50%;
    filter: blur(80px);
    opacity: .35;
}
.bg__glow--a { left: -20vmax; top: -20vmax; background: radial-gradient(circle, rgba(91,108,255,0.6), transparent 60%); }
.bg__glow--b { right: -20vmax; bottom: -20vmax; background: radial-gradient(circle, rgba(54,209,220,0.5), transparent 60%); }

@keyframes meshDrift {
    0%   { transform: translate3d(0, 0, 0) scale(1); }
    100% { transform: translate3d(-3%, 2%, 0) scale(1.05); }
}

/* ---------- Header ---------- */
.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 16px var(--gutter);
    background: linear-gradient(180deg, rgba(6,8,20,0.85), rgba(6,8,20,0.55));
    backdrop-filter: saturate(140%) blur(10px);
    -webkit-backdrop-filter: saturate(140%) blur(10px);
    border-bottom: 1px solid var(--c-border);
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    color: var(--c-text);
}
.brand__mark { border-radius: 8px; overflow: hidden; flex: 0 0 auto; }
.brand__mark--inline { display: inline-flex; }
.brand__text { display: inline-flex; flex-direction: column; line-height: 1.1; }
.brand__name { font-weight: 700; font-size: 1.05rem; letter-spacing: 0.01em; }
.brand__tag { font-size: .75rem; color: var(--c-text-mute); margin-top: 2px; }

.status-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    font-size: .82rem;
    color: var(--c-text-dim);
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: 999px;
    white-space: nowrap;
}
.status-pill__dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: var(--c-accent-2);
    box-shadow: 0 0 0 0 rgba(54,209,220,0.6);
    animation: pulse 2s var(--ease-out) infinite;
}
@keyframes pulse {
    0%   { box-shadow: 0 0 0 0 rgba(54,209,220,0.55); }
    70%  { box-shadow: 0 0 0 10px rgba(54,209,220,0); }
    100% { box-shadow: 0 0 0 0 rgba(54,209,220,0); }
}

/* ---------- Main ---------- */
.main {
    flex: 1;
    width: 100%;
    max-width: var(--container);
    margin: 0 auto;
    padding: clamp(28px, 5vw, 56px) var(--gutter) clamp(40px, 6vw, 80px);
}

.eyebrow {
    display: inline-block;
    font-size: .78rem;
    letter-spacing: .18em;
    text-transform: uppercase;
    color: var(--c-accent-2);
    margin-bottom: 14px;
}

/* ---------- Hero ---------- */
.hero {
    display: grid;
    grid-template-columns: 1.25fr 1fr;
    gap: clamp(24px, 4vw, 56px);
    align-items: center;
    padding: clamp(16px, 3vw, 32px) 0 clamp(32px, 5vw, 64px);
}
.hero__title {
    font-size: clamp(2.2rem, 5.6vw, 4.2rem);
    margin-bottom: 18px;
}
.hero__line { display: block; }
.hero__line--accent {
    background: var(--grad-accent);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.hero__lead {
    color: var(--c-text-dim);
    font-size: clamp(1rem, 1.4vw, 1.15rem);
    max-width: 56ch;
    margin-bottom: 28px;
}
.hero__actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 18px;
}
.hero__note {
    color: var(--c-text-mute);
    font-size: .9rem;
    margin: 0;
}

/* ---------- Buttons ---------- */
.btn {
    --btn-pad-y: 12px;
    --btn-pad-x: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: var(--btn-pad-y) var(--btn-pad-x);
    border-radius: 12px;
    font-weight: 600;
    font-size: .98rem;
    line-height: 1;
    cursor: pointer;
    border: 1px solid transparent;
    transition: transform .2s var(--ease-out),
                box-shadow .25s var(--ease-out),
                background .25s var(--ease-out),
                border-color .25s var(--ease-out),
                color .25s var(--ease-out);
    will-change: transform;
}
.btn--primary {
    color: #0b1020;
    background: var(--grad-accent);
    box-shadow: 0 10px 24px rgba(91,108,255,0.35);
}
.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 16px 34px rgba(91,108,255,0.45);
    color: #0b1020;
}
.btn--ghost {
    color: var(--c-text);
    background: var(--c-surface);
    border-color: var(--c-border);
}
.btn--ghost:hover {
    transform: translateY(-2px);
    background: var(--c-surface-2);
    border-color: var(--c-border-strong);
}
.btn--lg { padding: 14px 22px; font-size: 1rem; border-radius: 14px; }

/* ---------- Hero visual (orbit) ---------- */
.hero__visual {
    position: relative;
    aspect-ratio: 1 / 1;
    min-height: 280px;
    max-height: 520px;
}
.orbit {
    position: absolute;
    inset: 0;
    display: grid;
    place-items: center;
}
.orbit__core {
    position: relative;
    z-index: 2;
    width: 88px;
    height: 88px;
    border-radius: 22px;
    background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(255,255,255,0));
    border: 1px solid var(--c-border-strong);
    display: grid;
    place-items: center;
    box-shadow: var(--shadow-lg), inset 0 0 30px rgba(91,108,255,0.25);
}
.orbit__ring {
    position: absolute;
    border-radius: 50%;
    border: 1px dashed rgba(255,255,255,0.10);
    animation: spin 30s linear infinite;
}
.orbit__ring--1 { width: 60%; height: 60%; animation-duration: 22s; }
.orbit__ring--2 { width: 80%; height: 80%; animation-duration: 36s; animation-direction: reverse; border-color: rgba(91,108,255,0.18); }
.orbit__ring--3 { width: 100%; height: 100%; animation-duration: 50s; border-color: rgba(54,209,220,0.14); }
.orbit__node {
    position: absolute;
    top: -7px; left: 50%;
    transform: translateX(-50%);
    width: 12px; height: 12px;
    border-radius: 50%;
    background: var(--c-accent-2);
    box-shadow: 0 0 12px var(--c-accent-2);
}
.orbit__ring--2 .orbit__node { background: var(--c-accent); box-shadow: 0 0 12px var(--c-accent); }
.orbit__ring--3 .orbit__node { background: var(--c-accent-3); box-shadow: 0 0 12px var(--c-accent-3); }

@keyframes spin {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

/* ---------- Section heads ---------- */
.section-head {
    max-width: 720px;
    margin-bottom: 28px;
}
.section-title {
    font-size: clamp(1.6rem, 3.2vw, 2.4rem);
    margin-bottom: 10px;
}
.section-sub {
    color: var(--c-text-dim);
    font-size: 1rem;
    margin: 0;
}

/* ---------- Services ---------- */
.services { padding: clamp(32px, 5vw, 64px) 0; }
.service-grid {
    list-style: none;
    margin: 0;
    padding: 0;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}
.service-card {
    position: relative;
    padding: 22px;
    background: var(--c-surface);
    border: 1px solid var(--c-border);
    border-radius: var(--radius-lg);
    transition: transform .25s var(--ease-out),
                background .25s var(--ease-out),
                border-color .25s var(--ease-out),
                box-shadow .25s var(--ease-out);
    overflow: hidden;
    isolation: isolate;
}
.service-card::before {
    content: "";
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    background: var(--grad-accent);
    opacity: 0;
    transition: opacity .25s var(--ease-out);
    z-index: -1;
}
.service-card:hover {
    transform: translateY(-4px);
    background: var(--c-surface-2);
    border-color: var(--c-border-strong);
    box-shadow: var(--shadow-md);
}
.service-card__icon {
    display: inline-grid;
    place-items: center;
    width: 44px; height: 44px;
    border-radius: 12px;
    background: rgba(91,108,255,0.12);
    color: #b6c0ff;
    margin-bottom: 14px;
}
.service-card__title {
    font-size: 1.05rem;
    font-weight: 600;
}

/* ---------- Contact ---------- */
.contact { padding: clamp(24px, 4vw, 48px) 0; }
.contact__panel {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: clamp(20px, 3vw, 40px);
    align-items: center;
    padding: clamp(24px, 4vw, 40px);
    border-radius: var(--radius-xl);
    border: 1px solid var(--c-border);
    background:
        linear-gradient(180deg, rgba(91,108,255,0.10), rgba(91,108,255,0.02)),
        var(--c-surface);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}
.contact__panel::after {
    content: "";
    position: absolute;
    inset: 0;
    background: radial-gradient(60% 80% at 100% 0%, rgba(54,209,220,0.18), transparent 60%);
    pointer-events: none;
}
.contact__copy { position: relative; z-index: 1; }
.contact__actions {
    position: relative;
    z-index: 1;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    justify-content: flex-end;
}

/* ---------- Footer ---------- */
.site-footer {
    padding: 24px var(--gutter) 28px;
    border-top: 1px solid var(--c-border);
    color: var(--c-text-mute);
    font-size: .88rem;
}
.site-footer__row {
    max-width: var(--container);
    margin: 0 auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 10px;
}
.site-footer__row--meta { margin-top: 8px; opacity: .8; }
.social {
    list-style: none;
    margin: 0;
    padding: 0;
    display: inline-flex;
    gap: 14px;
}
.social a:hover { color: var(--c-accent-2); }

/* ---------- Reveal animation ---------- */
.reveal {
    opacity: 0;
    transform: translate3d(0, 14px, 0);
    transition: opacity .7s var(--ease-out), transform .7s var(--ease-out);
    will-change: opacity, transform;
}
.reveal.is-in {
    opacity: 1;
    transform: translate3d(0, 0, 0);
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.001ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.001ms !important;
        scroll-behavior: auto !important;
    }
    .reveal { opacity: 1; transform: none; }
    .orbit__ring { animation: none; }
    .bg__mesh { animation: none; }
    .status-pill__dot { animation: none; }
}

/* ---------- Responsive ---------- */
@media (max-width: 960px) {
    .hero { grid-template-columns: 1fr; }
    .hero__visual { max-width: 420px; margin: 0 auto; width: 100%; }
    .service-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .contact__panel { grid-template-columns: 1fr; }
    .contact__actions { justify-content: flex-start; }
}

@media (max-width: 560px) {
    .service-grid { grid-template-columns: 1fr; }
    .site-header { padding: 12px var(--gutter); }
    .status-pill { padding: 6px 10px; font-size: .76rem; }
    .brand__tag { display: none; }
}

@media (max-width: 380px) {
    .hero__title { font-size: 2rem; }
    .btn { width: 100%; }
    .hero__actions { flex-direction: column; align-items: stretch; }
    .contact__actions .btn { width: 100%; }
}

/* ---------- Large / wide screens ---------- */
@media (min-width: 1600px) {
    :root { --container: 1320px; }
}