:root {
    /* Light palette */
    /* --vp-accent: #0ea5b7; */
    /* teal-cyan */
    /* --vp-accent-2: #2563eb; */
    /* blue */
    --vp-accent: #22d3ee;
    /* cyan-400 */
    --vp-accent-2: #60a5fa;
    /* blue-400 */

    --vp-ink: #0f172a;
    /* slate-900 */
    --vp-muted: #475569;
    /* slate-600 */
    --vp-border: rgba(15, 23, 42, 0.10);
    --vp-card-shadow: 0 8px 28px rgba(2, 6, 23, 0.06);

    /* Sticky-nav anchor offset (fixes headings hidden behind navbar) */
    --vp-nav-offset: 28px; /* adjust if navbar height changes */

    /* Type tints (very light) */
    --vp-type-core-bg:   rgba(96, 165, 250, 0.18); /* blue-400 */
    --vp-type-applied-bg: rgba(248, 113, 113, 0.16); /* red */
    --vp-type-notes-bg:  rgba(34, 197, 94, 0.16); /* green */

    --vp-type-core-fg:   #1d4ed8;  /* blue-700 */
    --vp-type-applied-fg:#166534;  /* green-800 */
    --vp-type-notes-fg:  #991b1b;  /* red-800 */
}

/* Ensure anchor navigation accounts for sticky navbar */
html {
    scroll-padding-top: var(--vp-nav-offset);
}

/* Applies when you jump to #capabilities, #approach, etc. */
[id] {
    scroll-margin-top: var(--vp-nav-offset);
}

/* Dark palette (actually legible + calm) */
[data-bs-theme="dark"] {
    --vp-accent: #22d3ee;
    /* cyan-400 */
    --vp-accent-2: #60a5fa;
    /* blue-400 */
    --vp-ink: #e5e7eb;
    /* gray-200 */
    --vp-muted: #a1a1aa;
    /* zinc-400 */
    --vp-border: rgba(148, 163, 184, 0.20);
    --vp-card-shadow: 0 12px 34px rgba(0, 0, 0, 0.45);
}

body {
    color: var(--vp-ink);
    letter-spacing: -0.01em;
}

.vp-nav {
    border-bottom: 1px solid var(--vp-border);
    backdrop-filter: blur(10px);
}

.vp-brand {
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* Default (light) */
.vp-navbar-logo {
  content: url("/static/images/logo_square_navbar.svg");
}

/* Dark mode */
[data-bs-theme="dark"] .vp-navbar-logo {
  content: url("/static/images/logo_square_navbar_dark.svg");
}


.vp-hero {
    padding: 5rem 0 3rem;
}

.vp-kicker {
    color: var(--vp-muted);
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.vp-display {
    font-weight: 800;
    letter-spacing: -0.04em;
    line-height: 1.05;
}

.vp-lead {
    color: var(--vp-muted);
    font-size: 1.125rem;
    line-height: 1.6;
    max-width: 52rem;
}

.vp-gradient-text {
    background: linear-gradient(90deg, var(--vp-accent), var(--vp-accent-2));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.vp-card {
    border: 1px solid var(--vp-border);
    border-radius: 1.25rem;
    background: var(--bs-body-bg);
    box-shadow: var(--vp-card-shadow);
    transition: transform .15s ease, box-shadow .15s ease;
}

.vp-card:hover {
  transform: translateY(-2px);
}

.vp-card--flat { 
    box-shadow: none; 
    border: 0px solid var(--vp-border);
}

.vp-card .vp-muted {
  transition: opacity .15s ease;
}

.vp-card:hover .vp-muted {
  opacity: .85;
}

.vp-readmore {
  font-weight: 500;
  letter-spacing: .01em;
  opacity: .6;
  transition: opacity .15s ease;
}

.vp-card:hover .vp-readmore {
  opacity: 1;
}


.vp-soft {
    /* Light background gradients */
    background:
        radial-gradient(1200px 500px at 10% 0%, rgba(14, 165, 183, 0.10), transparent 60%),
        radial-gradient(900px 450px at 90% 10%, rgba(37, 99, 235, 0.10), transparent 60%);
}

[data-bs-theme="dark"] body.vp-soft {
    /* Dark background gradients (subtle, non-muddy) */
    background:
        radial-gradient(1200px 500px at 10% 0%, rgba(34, 211, 238, 0.10), transparent 60%),
        radial-gradient(900px 450px at 90% 10%, rgba(96, 165, 250, 0.10), transparent 60%);
}

.vp-section {
    padding: 3.25rem 0;
}

.vp-section-title {
    font-weight: 800;
    letter-spacing: -0.03em;
}

.vp-muted {
    color: var(--vp-muted);
}

.vp-pill {
    display: inline-flex;
    gap: .5rem;
    align-items: center;
    padding: .4rem .75rem;
    border: 1px solid var(--vp-border);
    border-radius: 999px;
    font-size: .9rem;
    color: var(--vp-muted);
    background: color-mix(in srgb, var(--bs-body-bg), transparent 0%);
    text-decoration: none;
}


.vp-pill.vp-pill-list {
    padding: .25rem .6rem;
    font-size: .8rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    line-height: 1;
}



.vp-btn-primary {
    border-radius: 999px;
    padding: .75rem 1rem;
    font-weight: 600;
    border: 0;
    background: linear-gradient(90deg, var(--vp-accent), var(--vp-accent-2));
}

.vp-btn-secondary {
    border-radius: 999px;
    padding: .75rem 1rem;
    font-weight: 600;
    border: 1px solid var(--vp-border);
    background: transparent;
}

.vp-footer {
    border-top: 1px solid var(--vp-border);
    padding: 2.5rem 0;
    color: var(--vp-muted);
}

/* Accessibility: respect reduced motion */
@media (prefers-reduced-motion: reduce) {
    * {
        scroll-behavior: auto !important;
        transition: none !important;
        animation: none !important;
    }
}




/* --- Quiet document block: notepad paper --- */
.vp-note {
    padding: 4rem 0;
}

.vp-note__paper {
    max-width: 580px;
    margin: 0 auto;
    background: #ffffff;
    padding: 2.25rem 2.5rem;
    border: 1px solid var(--vp-border);
}

/* subtle paper depth — not a card shadow */
.vp-note__paper {
    box-shadow:
        0 1px 0 rgba(15, 23, 42, 0.04),
        0 8px 24px rgba(15, 23, 42, 0.06);
}

/* document header */
.vp-note__label {
    font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
    font-weight: 600;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    font-size: 0.78rem;
    color: var(--vp-muted);
    margin-bottom: 1.25rem;
}

/* left margin rule, like a notepad */
.vp-note__body {
    border-left: 2px solid var(--vp-border);
    padding-left: 1.5rem;
}

.vp-note__text {
    margin: 0;
    font-size: 1.05rem;
    line-height: 1.75;
    color: var(--vp-ink);
}


.vp-note__text strong {
    font-weight: 700;
}

.vp-note__text span {
    color: var(--vp-muted);
}



/* Dark mode: make the note stand out as paper */
[data-bs-theme="dark"] .vp-note__paper {
    background: #313133; /* slightly lighter than body bg */
    border-color: rgba(148, 163, 184, 0.35);
    box-shadow:
        0 1px 0 rgba(255, 255, 255, 0.03),
        0 12px 30px rgba(0, 0, 0, 0.6);
}


/* --- Paper imperfection: more pronounced uneven edge --- */
.vp-note__paper {
    position: relative;
}

/* Stronger, organic edge erosion */
.vp-note__paper::after {
    content: "";
    position: absolute;
    inset: -1px; /* slight bleed so edges don't look clipped */
    pointer-events: none;

    mask-image:
        radial-gradient(18px 8px at 8% 0%, transparent 96%, black 100%),
        radial-gradient(22px 10px at 32% 0%, transparent 96%, black 100%),
        radial-gradient(16px 7px at 58% 0%, transparent 96%, black 100%),
        radial-gradient(20px 9px at 82% 0%, transparent 96%, black 100%),

        radial-gradient(16px 7px at 14% 100%, transparent 96%, black 100%),
        radial-gradient(22px 10px at 46% 100%, transparent 96%, black 100%),
        radial-gradient(18px 8px at 76% 100%, transparent 96%, black 100%),

        radial-gradient(14px 6px at 0% 36%, transparent 96%, black 100%),
        radial-gradient(18px 8px at 100% 64%, transparent 96%, black 100%);

    mask-composite: exclude;
    -webkit-mask-composite: xor;
}


.vp-note__paper {
    transform: rotate(-0.25deg);
    max-width: 820px; 
    margin: 0 auto;
    /* background-color: var(--vp-type-notes-bg); */
}



.vp-hero-quote {
    font-size: 1.2rem;
    font-style: italic;
    color: var(--vp-muted);
    line-height: 1.5;
}


/* Markdown rendering */
.vp-prose h2, .vp-prose h3 { margin-top: 1.5rem; }
/* .vp-prose p { 
    color: var(--vp-muted); 
    line-height: 1.8; 
} */
.vp-prose ul, .vp-prose ol, .vp-prose li { color: inherit; }
.vp-prose strong { color: var(--vp-ink); }
.vp-prose pre { padding: 1rem; border: 1px solid var(--vp-border); overflow-x: auto; }
.vp-prose code { font-size: 0.95em; }
.vp-prose blockquote { border-left: 2px solid var(--vp-accent-2); padding-left: 1rem; color: var(--vp-muted); }
.vp-prose img { max-width: 100%; height: auto; display: block; margin: 1rem auto; }