/*
Theme Name:   Ghostspark Labs
Theme URI:    https://ghostsparklabs.com
Description:  Ghostspark Labs child theme for Twenty Twenty-Five. Hybrid HUD-Luxury brand system (Edna brief, locked 2026-09-25).
Author:       Ghostspark Labs
Template:     twentytwentyfive
Version:      1.0.0
Requires at least: 6.5
Requires PHP: 7.4
License:      GPL-2.0-or-later
Text Domain:  ghostspark
*/

/* ==========================================================================
   1. Tokens (source of truth: ghostspark-labs-brand-design-brief.md)
   ========================================================================== */
:root {
	--gs-bg: #0a0d12;
	--gs-bg-2: #0c1016;
	--gs-surface: #10151f;
	--gs-text: #E8ECF2;
	--gs-dim: #8B94A3;
	--gs-arc: #2563EB;       /* UI: borders, lines, fills */
	--gs-arc-glow: #4C9AFF;  /* hover/active + any blue TEXT (AA contrast on bg) */
	--gs-gold: #c4963a;      /* mark, Academy CTA, headline rule. Nowhere else. */

	--gs-font-display: "Clash Display", "Switzer", system-ui, sans-serif;
	--gs-font-body: "Switzer", system-ui, -apple-system, "Segoe UI", sans-serif;
	--gs-font-mono: "Fragment Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;

	--gs-r-control: 6px;     /* Radius Scale: controls */
	--gs-r-container: 16px;  /* Radius Scale: containers */

	--gs-hair: rgba(255, 255, 255, 0.08);
	--gs-wrap: 1180px;
	--gs-gutter: clamp(16px, 4vw, 40px);
	--gs-section: clamp(72px, 11vw, 144px);

	--gs-glow: 0 0 0 1px rgba(76, 154, 255, 0.55), 0 0 18px rgba(76, 154, 255, 0.45), 0 0 42px rgba(37, 99, 235, 0.3);
	--gs-ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

/* ==========================================================================
   2. Base
   ========================================================================== */
body.gs {
	background: var(--gs-bg);
	color: var(--gs-text);
	font-family: var(--gs-font-body);
	font-size: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
	line-height: 1.65;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	text-rendering: optimizeLegibility;
}

body.gs .wp-site-blocks { padding: 0; }
body.gs .wp-site-blocks > * { margin-block-start: 0; }
body.gs .gs-main { margin: 0; }

.gs h1, .gs h2, .gs h3 {
	font-family: var(--gs-font-display);
	font-weight: 600;
	color: var(--gs-text);
	letter-spacing: -0.012em;
	line-height: 1.06;
	margin: 0;
	text-wrap: balance;
}
.gs h2 { font-size: clamp(2rem, 1.4rem + 2.6vw, 3.25rem); }
.gs h3 { font-size: clamp(1.2rem, 1.1rem + 0.4vw, 1.4rem); font-weight: 500; line-height: 1.2; letter-spacing: 0; }
.gs p { margin: 0; }
.gs ::selection { background: rgba(76, 154, 255, 0.35); color: #fff; }

.gs a { color: var(--gs-arc-glow); text-underline-offset: 3px; }
.gs a:hover { color: var(--gs-text); }
.gs :focus-visible {
	outline: 2px solid var(--gs-arc-glow);
	outline-offset: 3px;
	border-radius: var(--gs-r-control);
}

.gs-wrap {
	width: 100%;
	max-width: calc(var(--gs-wrap) + 2 * var(--gs-gutter));
	margin-inline: auto;
	padding-inline: var(--gs-gutter);
	box-sizing: border-box;
}

.screen-reader-text {
	position: absolute !important;
	width: 1px; height: 1px; padding: 0; margin: -1px;
	overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0;
}

/* ==========================================================================
   3. Micro-labels, rules, corner brackets (accent texture only)
   ========================================================================== */
.gs-label {
	display: inline-flex;
	align-items: center;
	gap: 12px;
	font-family: var(--gs-font-mono);
	font-size: 0.75rem;
	letter-spacing: 0.16em;
	text-transform: uppercase;
	color: var(--gs-dim);
	margin-bottom: 20px !important;
}
.gs-label__num {
	color: var(--gs-arc-glow);
	padding-right: 12px;
	border-right: 1px solid var(--gs-hair);
}
.gs-label__dot {
	width: 6px; height: 6px; border-radius: 50%;
	background: var(--gs-arc-glow);
	box-shadow: 0 0 10px var(--gs-arc-glow), 0 0 22px rgba(37, 99, 235, 0.6);
}

/* The single gold rule under key headlines. */
.gs-rule {
	display: block;
	width: 56px;
	height: 1px;
	margin: 28px 0;
	background: var(--gs-gold);
}

.gs-lede { color: var(--gs-dim); font-size: clamp(1.05rem, 1rem + 0.3vw, 1.2rem); max-width: 60ch; }

.gs-corner { position: absolute; width: 14px; height: 14px; border: 1px solid rgba(139, 148, 163, 0.5); }
.gs-corner--tl { top: 0; left: 0; border-right: 0; border-bottom: 0; }
.gs-corner--tr { top: 0; right: 0; border-left: 0; border-bottom: 0; }
.gs-corner--bl { bottom: 0; left: 0; border-right: 0; border-top: 0; }
.gs-corner--br { bottom: 0; right: 0; border-left: 0; border-top: 0; }

/* ==========================================================================
   4. Buttons (radius 6px)
   ========================================================================== */
.gs-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 36px; }

.gs .gs-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 10px;
	min-height: 48px;
	padding: 0 24px;
	border-radius: var(--gs-r-control);
	font-family: var(--gs-font-body);
	font-weight: 600;
	font-size: 0.975rem;
	letter-spacing: 0.01em;
	text-decoration: none;
	transition: box-shadow 0.25s var(--gs-ease), background-color 0.25s var(--gs-ease), border-color 0.25s var(--gs-ease), color 0.25s var(--gs-ease);
	white-space: nowrap;
}
.gs .gs-btn--sm { min-height: 40px; padding: 0 16px; font-size: 0.9rem; }

/* Gold: Academy / premium CTAs only. */
.gs .gs-btn--gold { background: var(--gs-gold); color: #0a0d12; border: 1px solid var(--gs-gold); }
.gs .gs-btn--gold:hover { color: #0a0d12; box-shadow: 0 0 0 1px rgba(196, 150, 58, 0.6), 0 0 24px rgba(76, 154, 255, 0.35); }

/* Ghost: blue instrument edge, glows on hover (Glow Application Rule). */
.gs .gs-btn--ghost { background: rgba(37, 99, 235, 0.06); color: var(--gs-text); border: 1px solid rgba(37, 99, 235, 0.7); }
.gs .gs-btn--ghost:hover { color: #fff; border-color: var(--gs-arc-glow); background: rgba(37, 99, 235, 0.14); box-shadow: var(--gs-glow); }

/* ==========================================================================
   5. Glass card — Card Standard (locked 2026-09-25)
   ========================================================================== */
.gs-card {
	position: relative;
	overflow: hidden;
	border-radius: var(--gs-r-container);
	padding: clamp(24px, 3vw, 36px);
	background:
		linear-gradient(135deg, rgba(255, 255, 255, 0.07) 0%, rgba(255, 255, 255, 0.015) 45%, rgba(16, 21, 31, 0.45) 100%),
		rgba(16, 21, 31, 0.5);
	-webkit-backdrop-filter: blur(18px) saturate(150%);
	backdrop-filter: blur(18px) saturate(150%);
	border: 1px solid rgba(255, 255, 255, 0.14);
	box-shadow:
		0 24px 60px -24px rgba(0, 0, 0, 0.7),
		inset 0 1px 0 rgba(255, 255, 255, 0.18),
		inset 0 0 70px rgba(37, 99, 235, 0.1);
	box-sizing: border-box;
}
.gs-card::before {
	content: "";
	position: absolute;
	width: 60%;
	aspect-ratio: 1;
	top: -22%;
	right: -14%;
	border-radius: 50%;
	background: rgba(76, 154, 255, 0.3);
	filter: blur(24px);
	opacity: 0.55;
	pointer-events: none;
}
.gs-card > * { position: relative; z-index: 1; }

.gs-cards { list-style: none; margin: 0; padding: 0; display: grid; gap: clamp(16px, 2vw, 24px); }
.gs-cards--3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 900px) { .gs-cards--3 { grid-template-columns: 1fr; max-width: 560px; margin-inline: auto; } }
.gs-card h3 { margin-bottom: 12px; }
.gs-card p { color: var(--gs-dim); }
.gs-card__index {
	display: block;
	font-family: var(--gs-font-mono);
	font-size: 0.75rem;
	letter-spacing: 0.16em;
	color: var(--gs-arc-glow);
	margin-bottom: 40px;
}

/* ==========================================================================
   6. Header
   ========================================================================== */
.gs-header-wrap { position: sticky; top: 0; z-index: 50; margin: 0; }
.admin-bar .gs-header-wrap { top: 32px; }
@media (max-width: 782px) { .admin-bar .gs-header-wrap { top: 0; } }

.gs-header {
	background: rgba(10, 13, 18, 0.72);
	-webkit-backdrop-filter: blur(14px) saturate(140%);
	backdrop-filter: blur(14px) saturate(140%);
	border-bottom: 1px solid var(--gs-hair);
}
.gs-header__inner { display: flex; align-items: center; justify-content: space-between; min-height: 72px; gap: 24px; }

.gs .gs-brand { display: inline-flex; align-items: center; gap: 20px; text-decoration: none; color: var(--gs-text); }
.gs-brand .gs-mark--small { width: 58px; height: auto; flex: none; }
.gs-brand__word {
	font-family: var(--gs-font-mono);
	font-size: 0.8rem;
	letter-spacing: 0.22em;
	text-transform: uppercase;
	white-space: nowrap;
}

.gs-nav ul { list-style: none; display: flex; align-items: center; gap: clamp(16px, 2.4vw, 32px); margin: 0; padding: 0; }
.gs .gs-nav a:not(.gs-btn) {
	color: var(--gs-dim);
	text-decoration: none;
	font-size: 0.95rem;
	font-weight: 500;
	transition: color 0.2s;
}
.gs .gs-nav a:not(.gs-btn):hover { color: var(--gs-text); }

.gs-nav-toggle {
	display: none;
	width: 44px; height: 44px;
	border: 1px solid var(--gs-hair);
	border-radius: var(--gs-r-control);
	background: transparent;
	cursor: pointer;
	position: relative;
}
.gs-nav-toggle__bar, .gs-nav-toggle__bar::before, .gs-nav-toggle__bar::after {
	position: absolute; left: 12px; right: 12px; height: 1.5px; background: var(--gs-text); content: "";
	transition: transform 0.25s var(--gs-ease), opacity 0.2s;
}
.gs-nav-toggle__bar { top: 50%; }
.gs-nav-toggle__bar::before { left: 0; right: 0; top: -6px; }
.gs-nav-toggle__bar::after { left: 0; right: 0; top: 6px; }
.gs-nav-toggle[aria-expanded="true"] .gs-nav-toggle__bar { background: transparent; }
.gs-nav-toggle[aria-expanded="true"] .gs-nav-toggle__bar::before { transform: translateY(6px) rotate(45deg); }
.gs-nav-toggle[aria-expanded="true"] .gs-nav-toggle__bar::after { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 820px) {
	.js .gs-nav-toggle { display: inline-block; }
	.js .gs-nav {
		position: absolute; left: 0; right: 0; top: 100%;
		background: rgba(10, 13, 18, 0.96);
		border-bottom: 1px solid var(--gs-hair);
		display: none;
	}
	.js .gs-nav.is-open { display: block; }
	.js .gs-nav ul { flex-direction: column; align-items: stretch; padding: 12px var(--gs-gutter) 24px; gap: 4px; }
	.js .gs-nav a:not(.gs-btn) { display: block; padding: 12px 0; font-size: 1.05rem; }
	.js .gs-nav .gs-btn { margin-top: 12px; width: 100%; }
	.gs-nav ul { flex-wrap: wrap; }
	.gs-header__inner { position: relative; }
	.gs-brand__word { font-size: 0.72rem; letter-spacing: 0.18em; }
}

/* ==========================================================================
   7. Hero
   ========================================================================== */
.gs-hero {
	position: relative;
	padding: clamp(56px, 9vw, 120px) 0 clamp(72px, 10vw, 136px);
	overflow: hidden;
	isolation: isolate;
}
.gs-hero::before {
	content: "";
	position: absolute; z-index: -1;
	inset: -20% -10% auto auto;
	width: min(900px, 90vw); aspect-ratio: 1;
	background: radial-gradient(closest-side, rgba(37, 99, 235, 0.16), rgba(37, 99, 235, 0) 70%);
	pointer-events: none;
}
.gs-hero__grid { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr); gap: clamp(32px, 5vw, 72px); align-items: center; }
.gs-hero__title { font-size: clamp(2.6rem, 1.5rem + 4.6vw, 5.1rem); max-width: 14ch; }
.gs-hero .gs-rule { margin: 32px 0 28px; }
.gs-hero__sub { color: var(--gs-dim); font-size: clamp(1.08rem, 1rem + 0.45vw, 1.3rem); max-width: 50ch; }

.gs-hero__frame {
	position: relative;
	padding: clamp(28px, 5vw, 56px) clamp(16px, 3vw, 32px);
	aspect-ratio: 5 / 4;
	display: grid;
	place-items: center;
}
.gs-hero__frame::after { /* horizon hairline: the "monitor" baseline */
	content: ""; position: absolute; left: 14px; right: 14px; top: 50%;
	height: 1px; background: linear-gradient(90deg, transparent, var(--gs-hair) 20%, var(--gs-hair) 80%, transparent);
	z-index: -1;
}
.gs-mark--large { width: 100%; height: auto; overflow: visible; }
.gs-hero__readout {
	position: absolute; right: 22px; bottom: 16px;
	font-family: var(--gs-font-mono); font-size: 0.7rem; letter-spacing: 0.18em; text-transform: uppercase;
	color: var(--gs-dim);
}

/* Motion beat 1: the spark travels, leaving the pulse as its wake. Once. */
@media (prefers-reduced-motion: no-preference) {
	.js .gs-mark--large .gs-mark__line { stroke-dasharray: 1; stroke-dashoffset: 1; animation: gs-draw 1.6s var(--gs-ease) 0.2s forwards; }
	.js .gs-mark--large .gs-mark__spark,
	.js .gs-mark--large .gs-mark__halo { opacity: 0; animation: gs-fade 0.7s var(--gs-ease) 1.5s forwards; }
}
@keyframes gs-draw { to { stroke-dashoffset: 0; } }
@keyframes gs-fade { to { opacity: 1; } }

@media (max-width: 900px) {
	.gs-hero__grid { grid-template-columns: 1fr; }
	.gs-hero__visual { order: -1; max-width: 460px; width: 100%; }
	.gs-hero__frame { aspect-ratio: 16 / 7; padding-block: 16px; }
}

/* ==========================================================================
   8. Sections
   ========================================================================== */
.gs-section { padding: var(--gs-section) 0; position: relative; }
.gs-section + .gs-section::before {
	content: ""; position: absolute; top: 0; left: 50%; transform: translateX(-50%);
	width: min(var(--gs-wrap), calc(100% - 2 * var(--gs-gutter)));
	height: 1px; background: linear-gradient(90deg, transparent, var(--gs-hair) 15%, var(--gs-hair) 85%, transparent);
}
.gs-section__head { margin-bottom: clamp(40px, 5vw, 64px); }
.gs-section__head--center { text-align: center; }
.gs-section__head--center .gs-lede { margin: 20px auto 0; }
.gs-section__head--center h2 { max-width: 22ch; margin-inline: auto; }

/* Origin */
.gs-origin__grid { display: grid; grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr); gap: clamp(32px, 6vw, 96px); align-items: start; }
.gs-origin .gs-section__head { margin: 0; position: sticky; top: 120px; }
.gs-origin__body { display: grid; gap: 24px; font-size: clamp(1.08rem, 1rem + 0.4vw, 1.25rem); color: var(--gs-text); max-width: 58ch; }
.gs-origin__body p:first-child::first-line { color: var(--gs-text); }
.gs-origin__body p + p { color: var(--gs-dim); }
.gs-origin__sign { font-family: var(--gs-font-mono); font-size: 0.78rem !important; letter-spacing: 0.14em; text-transform: uppercase; color: var(--gs-dim); }
@media (max-width: 860px) {
	.gs-origin__grid { grid-template-columns: 1fr; }
	.gs-origin .gs-section__head { position: static; }
}

/* Method (AVATAR — named, never detailed) */
.gs-method__panel { padding: clamp(28px, 5vw, 64px); }
.gs-method__panel::before { top: auto; bottom: -30%; right: auto; left: -10%; width: 50%; }
.gs-method__grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: clamp(32px, 5vw, 72px); align-items: center; }
.gs-method__title { font-size: clamp(2.2rem, 1.5rem + 3vw, 3.75rem); }

.gs-nodes { position: relative; display: grid; grid-template-columns: repeat(6, 1fr); gap: clamp(6px, 1.2vw, 14px); align-items: center; }
.gs-nodes__track {
	position: absolute; left: 6%; right: 6%; top: 50%; height: 1px;
	background: linear-gradient(90deg, rgba(37, 99, 235, 0.2), var(--gs-arc), rgba(37, 99, 235, 0.2));
}
.gs-node {
	position: relative;
	aspect-ratio: 1;
	display: grid; place-items: center;
	border-radius: 50%;
	font-family: var(--gs-font-mono);
	font-size: clamp(0.9rem, 0.7rem + 0.9vw, 1.35rem);
	color: var(--gs-text);
	background: radial-gradient(circle at 50% 40%, rgba(76, 154, 255, 0.28), rgba(16, 21, 31, 0.9) 70%);
	border: 1px solid rgba(76, 154, 255, 0.6);
	box-shadow: var(--gs-glow); /* Glow Application Rule: instrument element */
}

/* Motion beat 2: nodes power on in sequence when the panel enters view. */
@media (prefers-reduced-motion: no-preference) {
	.js [data-nodes] .gs-node { opacity: 0.35; box-shadow: none; border-color: rgba(76, 154, 255, 0.25); transition: opacity 0.5s var(--gs-ease), box-shadow 0.6s var(--gs-ease), border-color 0.6s var(--gs-ease); }
	.js [data-nodes].is-in .gs-node { opacity: 1; box-shadow: var(--gs-glow); border-color: rgba(76, 154, 255, 0.6); }
	.js [data-nodes].is-in .gs-node:nth-of-type(2) { transition-delay: 0.12s; }
	.js [data-nodes].is-in .gs-node:nth-of-type(3) { transition-delay: 0.24s; }
	.js [data-nodes].is-in .gs-node:nth-of-type(4) { transition-delay: 0.36s; }
	.js [data-nodes].is-in .gs-node:nth-of-type(5) { transition-delay: 0.48s; }
	.js [data-nodes].is-in .gs-node:nth-of-type(6) { transition-delay: 0.6s; }
	.js [data-nodes].is-in .gs-node:nth-of-type(7) { transition-delay: 0.72s; }
}

.gs-points {
	list-style: none; margin: clamp(36px, 5vw, 56px) 0 0; padding: clamp(28px, 4vw, 40px) 0 0;
	border-top: 1px solid var(--gs-hair);
	display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 240px), 1fr)); gap: 24px;
}
.gs-points li { position: relative; padding-left: 22px; color: var(--gs-text); }
.gs-points li::before {
	content: ""; position: absolute; left: 0; top: 0.62em; width: 7px; height: 7px; border-radius: 50%;
	background: var(--gs-arc-glow); box-shadow: 0 0 10px var(--gs-arc-glow);
}
@media (max-width: 860px) { .gs-method__grid { grid-template-columns: 1fr; } }

/* Problem cards: staggered reveal */
@media (prefers-reduced-motion: no-preference) {
	.js [data-reveal-group] [data-reveal] { opacity: 0; transform: translateY(18px); transition: opacity 0.7s var(--gs-ease), transform 0.7s var(--gs-ease); }
	.js [data-reveal-group] [data-reveal]:nth-child(2) { transition-delay: 0.1s; }
	.js [data-reveal-group] [data-reveal]:nth-child(3) { transition-delay: 0.2s; }
	.js [data-reveal-group].is-in [data-reveal] { opacity: 1; transform: none; }
}

/* Doors */
.gs-door { display: flex; flex-direction: column; gap: 0; }
.gs-door h3 { font-size: clamp(1.4rem, 1.2rem + 0.8vw, 1.75rem); font-weight: 600; }
.gs-door p { flex: 0 0 auto; }
.gs-door > p:not(.gs-door__tag) { margin-bottom: 32px; }
.gs-door .gs-btn { margin-top: auto; align-self: flex-start; }
.gs-door__tag {
	font-family: var(--gs-font-mono); font-size: 0.72rem !important; letter-spacing: 0.16em; text-transform: uppercase;
	color: var(--gs-dim) !important; margin-bottom: 28px !important;
}
.gs-door--academy { border-color: rgba(196, 150, 58, 0.35); }
.gs-door--academy .gs-door__tag { color: var(--gs-gold) !important; }

/* ==========================================================================
   9. Footer
   ========================================================================== */
.gs-footer-wrap { margin: 0; }
.gs-footer { border-top: 1px solid var(--gs-hair); padding: clamp(48px, 6vw, 72px) 0 28px; background: var(--gs-bg-2); }
.gs-footer__inner { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 32px; align-items: flex-start; }
.gs-footer__tag { color: var(--gs-dim); margin-top: 16px !important; }
.gs-footer__nav ul { list-style: none; margin: 0; padding: 0; display: flex; flex-wrap: wrap; gap: 12px 28px; }
.gs .gs-footer__nav a { color: var(--gs-dim); text-decoration: none; }
.gs .gs-footer__nav a:hover { color: var(--gs-text); }
.gs-footer__base {
	display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px;
	margin-top: 48px; padding-top: 24px; border-top: 1px solid var(--gs-hair);
	font-family: var(--gs-font-mono); font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--gs-dim);
}

/* ==========================================================================
   10. Non-front pages: keep the parent's content readable on the dark system
   ========================================================================== */
body.gs:not(.home) main { padding-block: clamp(40px, 6vw, 80px); }