/* ============================================================
   Pig-6 — shared design system, site header/nav and effects.
   Included on every page, before any page-specific <style>.
   ============================================================ */

:root {

    --bg: #09090b;
    --surface: #111113;
    --surface-2: #18181b;
    --border: #27272a;

    --text: #fafafa;
    --muted: #a1a1aa;

    --green: #22c55e;
    --purple: #8b5cf6;
    --red: #ef4444;

    --radius: 18px;
    --transition: .25s ease;

    --shadow: 0 12px 40px rgba(0, 0, 0, .35);
    --header-h: 66px;

}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {

    background: var(--bg);
    color: var(--text);

    font-family: "Inter", system-ui, sans-serif;
    line-height: 1.5;

    position: relative;
    overflow-x: hidden;

}

a {
    color: inherit;
}

/* ---------------- ambient background blobs ---------------- */

body::before,
body::after {

    content: "";
    position: fixed;

    width: 560px;
    height: 560px;

    border-radius: 50%;

    filter: blur(130px);
    opacity: .16;

    z-index: -1;
    pointer-events: none;

    animation: float-blob 20s ease-in-out infinite;

}

body::before {

    background: var(--green);
    top: -180px;
    left: -180px;

}

body::after {

    background: var(--purple);
    bottom: -180px;
    right: -180px;

    animation-delay: -10s;

}

@keyframes float-blob {

    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }

    50% {
        transform: translate(50px, -40px) scale(1.12);
    }

}

@media(prefers-reduced-motion:reduce) {

    body::before,
    body::after {
        animation: none;
    }

}

/* ---------------------- site header ---------------------- */

.site-header {

    position: sticky;
    top: 0;
    z-index: 1000;

    height: var(--header-h);

    display: flex;
    align-items: center;

    background: rgba(9, 9, 11, .68);

    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);

    border-bottom: 1px solid var(--border);

    transition: background var(--transition),
        box-shadow var(--transition),
        border-color var(--transition);

}

.site-header.scrolled {

    background: rgba(9, 9, 11, .92);
    box-shadow: 0 10px 30px rgba(0, 0, 0, .4);

}

.nav-inner {

    width: 100%;
    max-width: 1200px;

    margin: 0 auto;
    padding: 0 32px;

    display: flex;
    align-items: center;
    justify-content: space-between;

    gap: 24px;

}

.nav-brand {

    display: flex;
    align-items: center;
    gap: 10px;

    font-weight: 700;
    font-size: 17px;
    letter-spacing: -.5px;

    text-decoration: none;
    white-space: nowrap;

}

.nav-brand .logo-dot {

    width: 10px;
    height: 10px;

    border-radius: 50%;

    background: var(--green);
    box-shadow: 0 0 14px rgba(34, 197, 94, .85);

    animation: pulse-dot 2.6s ease-in-out infinite;

}

@keyframes pulse-dot {

    0%,
    100% {
        transform: scale(1);
        box-shadow: 0 0 14px rgba(34, 197, 94, .85);
    }

    50% {
        transform: scale(1.35);
        box-shadow: 0 0 22px rgba(34, 197, 94, 1);
    }

}

.nav-links {

    display: flex;
    align-items: center;
    gap: 4px;

}

.nav-links a {

    position: relative;

    padding: 9px 16px;
    border-radius: 10px;

    font-size: 14px;
    color: var(--muted);

    text-decoration: none;

    transition: color var(--transition), background var(--transition);

}

.nav-links a:hover {

    color: var(--text);
    background: var(--surface-2);

}

.nav-links a.active {

    color: var(--text);

}

.nav-links a.active::after {

    content: "";
    position: absolute;

    left: 16px;
    right: 16px;
    bottom: 4px;

    height: 2px;
    border-radius: 2px;

    background: var(--green);
    box-shadow: 0 0 8px rgba(34, 197, 94, .9);

}

.nav-toggle {

    display: none;

    flex-direction: column;
    justify-content: center;
    gap: 5px;

    width: 34px;
    height: 34px;

    background: transparent;
    border: 1px solid var(--border);
    border-radius: 9px;

    cursor: pointer;

}

.nav-toggle span {

    display: block;
    height: 2px;

    background: var(--text);
    border-radius: 2px;

    margin: 0 7px;

    transition: transform .25s ease, opacity .25s ease;

}

.nav-toggle.open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

@media(max-width:720px) {

    .nav-toggle {
        display: flex;
    }

    .nav-links {

        position: absolute;

        top: var(--header-h);
        left: 0;
        right: 0;

        flex-direction: column;
        align-items: stretch;
        gap: 2px;

        padding: 10px 16px 16px;

        background: rgba(9, 9, 11, .97);
        backdrop-filter: blur(16px);

        border-bottom: 1px solid var(--border);

        transform: translateY(-8px);
        opacity: 0;
        pointer-events: none;

        transition: transform var(--transition), opacity var(--transition);

    }

    .nav-links.open {

        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;

    }

    .nav-links a {
        padding: 12px 14px;
    }

    .nav-links a.active::after {
        bottom: 6px;
    }

}

/* ---------------------- scroll reveal ---------------------- */

.reveal {

    opacity: 0;
    transform: translateY(26px);

    transition: opacity .7s ease, transform .7s ease;

}

.reveal.in-view {

    opacity: 1;
    transform: none;

}

.reveal-delay-1 {
    transition-delay: .08s;
}

.reveal-delay-2 {
    transition-delay: .16s;
}

.reveal-delay-3 {
    transition-delay: .24s;
}

.reveal-delay-4 {
    transition-delay: .32s;
}

/* ---------------------- shared hover glow ---------------------- */

.glow-hover {

    transition: transform var(--transition),
        border-color var(--transition),
        box-shadow var(--transition);

}

.glow-hover:hover {

    transform: translateY(-4px);
    border-color: #3f3f46;

    box-shadow: 0 20px 55px -22px rgba(34, 197, 94, .35);

}

/* ---------------------- ripple buttons ---------------------- */

.ripple {

    position: relative;
    overflow: hidden;

}

.ripple-circle {

    position: absolute;

    border-radius: 50%;

    background: rgba(255, 255, 255, .35);

    transform: scale(0);

    animation: ripple-anim .6s ease-out;

    pointer-events: none;

}

@keyframes ripple-anim {

    to {
        transform: scale(1);
        opacity: 0;
    }

}