:root {
    --bg: #0b0c10;
    --bg2: #0f1117;
    --card: rgba(255,255,255,0.04);
    --border: rgba(255,255,255,0.10);
    --text: #f9f9f9;
    --muted: rgba(249,249,249,0.62);
    --outer: #f9f9f9;
    --inner: #0b0c10;
    --word:  #f9f9f9;
    --accent: #6366F1;

    font-family: Inter, system-ui, -apple-system, sans-serif;
    color-scheme: dark;
}

body.theme-light {
    --bg: #f6f7fb;
    --bg2: #ffffff;
    --card: rgba(17,19,23,0.03);
    --border: rgba(17,19,23,0.10);
    --text: #111317;
    --muted: rgba(17,19,23,0.68);
    --outer: #111317;
    --inner: #f6f7fb;
    --word:  #111317;
    --accent: #6366F1;

    color-scheme: light;
}

* { box-sizing: border-box; }
html, body { height: 100%; scroll-behavior: smooth; }

body {
    margin: 0;
    background:
    radial-gradient(1200px 700px at 50% 0%, rgba(255,255,255,0.07), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg2) 100%);
    color: var(--text);
    transition: background-color .35s ease, color .35s ease;
    -webkit-font-smoothing: antialiased;
}

.grid-overlay {
    position: fixed;
    inset: 0;
    background-image: radial-gradient(var(--border) 1px, transparent 1px);
    background-size: 40px 40px;
    mask-image: radial-gradient(circle at 50% 40%, black, transparent 80%);
    pointer-events: none;
    z-index: -1;
}

.container { 
    width: min(1000px, calc(100vw - 64px)); 
    margin: 0 auto; 
}

nav { padding: 32px 0; display: flex; justify-content: flex-end; }

.btn-theme {
    background: var(--card);
    border: 1px solid var(--border);
    color: var(--muted);
    padding: 8px 16px;
    border-radius: 999px;
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    cursor: pointer;
    transition: all .2s ease, outline-offset 0s; /* Keep offset instant, but color smooth */
}

.btn-theme:hover {
    color: var(--text);
    border-color: color-mix(in srgb, var(--accent) 55%, var(--border));
    background: color-mix(in srgb, var(--accent) 12%, var(--card));
}

.btn-theme:focus {
  outline: none; /* Hide the default browser ring to use your custom one */
}

.btn-theme:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

a {
    color: color-mix(in srgb, var(--accent) 75%, var(--text));
    text-decoration: none;
}
a:hover {
    text-decoration: underline;
    text-decoration-color: color-mix(in srgb, var(--accent) 85%, transparent);
    text-underline-offset: 3px;
}

.hero-layout { 
    padding: 100px 0 120px; 
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-lockup { 
    display: flex; 
    flex-direction: column;
    align-items: center; 
    gap: 32px; 
    user-select: none; 
    margin-bottom: 48px;
}

.logo-svg { height: 110px; width: auto; overflow: visible; display: block; }
.outer-r { fill: var(--outer); transition: fill .35s ease; }
.inner-r { fill: var(--accent); transition: fill .35s ease, opacity .22s ease; }

.wordmark { 
    font-size: clamp(52px, 9vw, 92px); 
    font-weight: 700; 
    letter-spacing: -0.04em; 
    color: var(--word); 
    line-height: 1; 
    margin: 0; 
}

.hero-content h1 {
    font-size: clamp(22px, 3.5vw, 30px);
    line-height: 1.4;
    letter-spacing: -0.01em;
    margin: 0 auto 36px;
    font-weight: 400;
    color: var(--muted);
    max-width: 42ch;
    text-wrap: balance;
}

.lexicon-inline {
    margin: 0 auto;
    margin-top: 24px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    padding: 28px;
    border-radius: 24px;
    border: 1px solid var(--border);
    border-top: 1px solid color-mix(in srgb, var(--accent) 55%, var(--border));
    background: var(--card);
    max-width: 640px;
    text-align: left;
}

.lexicon-inline .label { font-size: 11px; text-transform: uppercase; letter-spacing: 0.2em; color: var(--muted); font-weight: 700; margin: 0; }
.lexicon-inline .copy { font-size: 17px; line-height: 1.6; color: var(--muted); margin: 0; }
.lexicon-inline strong { color: var(--text); font-weight: 600; font-style: italic; }
.lexicon-inline .phonetic { opacity: 0.7; margin-left: 8px; font-weight: 400; font-style: normal; font-size: 0.95em; }
.lexicon-inline .etym { font-size: 13px; opacity: 0.5; margin-left: 10px; font-style: normal; }

.content-section { padding: 90px 0; border-top: 1px solid var(--border); }
.section-label { font-size: 12px; text-transform: uppercase; color: var(--muted); letter-spacing: 0.15em; margin-bottom: 56px; display: block; font-weight: 700; text-align: center;}

.principles-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 56px; }
.principle-item { text-align: center; }
.principle-item h3 { font-size: 20px; margin: 0 0 16px; font-weight: 600; color: var(--text); }
.principle-item p { color: var(--muted); font-size: 16px; line-height: 1.8; margin: 0 auto; max-width: 32ch; }

.status-content { max-width: 720px; margin: 0 auto; text-align: center; }
.status-content h3 { font-size: 20px; margin: 0 0 16px; font-weight: 600; color: var(--text); }
.status-content p { color: var(--muted); font-size: 16px; line-height: 1.8; margin: 0; }

footer { padding: 56px 0 72px; border-top: 1px solid var(--border); font-size: 13px; color: var(--muted); text-align: center; }

@media (max-width: 800px) {
    .principles-grid { grid-template-columns: 1fr; gap: 48px; }
    .hero-layout { padding: 60px 0 80px; }
}

.hero-lockup .outer-r, .hero-lockup .inner-r, .hero-lockup .wordmark { opacity: 0; transform: translateY(10px); filter: blur(4px); }
.is-ready .outer-r, .is-ready .wordmark {
    opacity: 1; transform: translateY(0); filter: blur(0);
    transition: opacity 800ms ease, transform 800ms ease, filter 800ms ease;
}
.is-ready .inner-r {
    opacity: 1; transform: translateY(0); filter: blur(0);
    transition: opacity 900ms ease 200ms, transform 900ms ease 200ms, filter 900ms ease 200ms;
}