/* GuitarX Design System — v1.26 */
:root {
  --gx-black: #090909;
  --gx-surface-1: #141414;
  --gx-surface-2: #1b1b1b;
  --gx-border: #2b2b2b;
  --gx-border-strong: #505050;
  --gx-white: #f1efe8;
  --gx-muted: #aaa9a4;
  --gx-brand-sky: #8fc9dc;
  --gx-brand-peach: #f4d2ca;
  --gx-brand-mint: #bdf3d0;
  --gx-brand-lab: #c8c1df;
  --gx-acid: var(--gx-brand-mint);
  --gx-amber: var(--gx-brand-peach);
  --gx-danger: #ff7f8d;
  --gx-hot: #cc2035;
  --gx-info: #72c7e7;
  /* Reading surfaces: used by long-form Guides. */
  --gx-reader-paper: #f8f3ea;
  --gx-reader-ink: #19313a;
  --gx-reader-muted: #53636a;
  --gx-reader-line: #ded8cc;
  --gx-reader-surface: #fffaf2;
  --gx-reader-surface-muted: #eee7da;
  --gx-reader-accent: #a55240;
  --gx-font-display: "Montserrat", sans-serif;
  --gx-font-body: "DM Sans", sans-serif;
  --gx-text-xs: .75rem;
  --gx-text-sm: .875rem;
  --gx-text-base: 1rem;
  --gx-text-lg: 1.125rem;
  --gx-icon-sm: 1rem;
  --gx-icon-md: 1.25rem;
  --gx-icon-lg: 1.5rem;
  --gx-icon-xl: 2rem;
  --gx-space-1: .25rem;
  --gx-space-2: .5rem;
  --gx-space-3: .75rem;
  --gx-space-4: 1rem;
  --gx-space-6: 1.5rem;
  --gx-space-8: 2rem;
  --gx-space-12: 3rem;
  --gx-space-16: 4rem;
  --gx-radius-sm: .625rem;
  --gx-radius-md: 1.125rem;
  --gx-radius-lg: 1.5rem;
  --gx-radius-round: 999px;
  --gx-shadow-lift: 0 18px 40px rgb(0 0 0 / .28);
  --gx-duration: 220ms;
  --gx-ease: cubic-bezier(.2,.8,.2,1);
  --gx-content: 1480px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; background: var(--gx-black); color: var(--gx-white); font: 400 var(--gx-text-base)/1.5 var(--gx-font-body); }
a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
.gx-container { width: min(var(--gx-content), calc(100% - 48px)); margin-inline: auto; }
.gx-logo { display: block; width: 144px; height: auto; }
.gx-internal-header { min-height: 88px; display: flex; align-items: center; position: sticky; top: 0; z-index: 20; border-bottom: 1px solid var(--gx-border); background: rgb(9 9 9 / .93); backdrop-filter: blur(18px); }
.gx-internal-header .gx-container { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 2.5rem; }
.gx-primary-nav { display: flex; justify-self: center; align-items: center; gap: 1.75rem; color: #c4c4c0; font-size: .9rem; white-space: nowrap; }
.gx-primary-nav a:hover, .gx-primary-nav a[aria-current="page"] { color: var(--gx-white); }
.gx-internal-back { color: var(--gx-muted); font-size: .875rem; white-space: nowrap; }
.gx-internal-back:hover { color: var(--gx-acid); }
.gx-kicker { display: inline-flex; align-items: center; gap: .5rem; color: var(--gx-acid); font-size: var(--gx-text-xs); font-weight: 700; letter-spacing: .1em; text-transform: uppercase; }
.gx-kicker::before { content: ""; width: 18px; height: 2px; background: currentColor; }
.gx-display { margin: 0; font: 700 clamp(2.6rem, 6vw, 6rem)/.96 var(--gx-font-display); letter-spacing: -.045em; }
.gx-title { margin: 0; font: 650 clamp(2rem, 4vw, 4rem)/1.02 var(--gx-font-display); letter-spacing: -.032em; }
.gx-subtitle { margin: 0; font: 650 1.5rem/1.15 var(--gx-font-display); letter-spacing: -.018em; }
.gx-body-muted { color: var(--gx-muted); }
.gx-btn { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; gap: .625rem; padding: .7rem 1.1rem; border: 1px solid transparent; border-radius: var(--gx-radius-round); font-weight: 700; cursor: pointer; transition: var(--gx-duration) var(--gx-ease); }
.gx-btn--primary { background: var(--gx-acid); color: var(--gx-black); }
.gx-btn--primary:hover { background: var(--gx-white); transform: translateY(-2px); }
.gx-btn--secondary { background: transparent; border-color: var(--gx-border); color: var(--gx-white); }
.gx-btn--secondary:hover { border-color: var(--gx-white); }
.gx-btn--ghost { background: transparent; color: var(--gx-muted); }
.gx-btn--ghost:hover { color: var(--gx-white); background: var(--gx-surface-2); }
.gx-btn:focus-visible, .gx-chip:focus-visible, .gx-input:focus-visible { outline: 3px solid color-mix(in srgb, var(--gx-acid) 45%, transparent); outline-offset: 3px; }
.gx-btn:disabled { opacity: .38; pointer-events: none; }
.gx-icon-btn { width: 44px; height: 44px; padding: 0; border: 1px solid var(--gx-border); border-radius: 50%; background: transparent; color: var(--gx-white); display: grid; place-items: center; cursor: pointer; }
.gx-icon-btn .ph { font-size: var(--gx-icon-md); }
.gx-icon-btn:hover { color: var(--gx-black); background: var(--gx-acid); border-color: var(--gx-acid); }
.gx-chip { padding: .55rem 1rem; border: 1px solid var(--gx-border); border-radius: var(--gx-radius-round); background: transparent; color: #c7c7c2; cursor: pointer; }
.gx-chip:hover, .gx-chip[aria-pressed="true"] { background: var(--gx-white); border-color: var(--gx-white); color: var(--gx-black); }
.content-label { display: inline-flex; align-items: center; justify-content: center; width: max-content; padding: .28rem .52rem .2rem; border-radius: .25rem; font-size: .7rem; font-weight: 700; line-height: 1; letter-spacing: .09em; text-transform: uppercase; white-space: nowrap; }
.content-label--news { background: var(--gx-danger); color: var(--gx-black); }
.content-label--original { background: var(--gx-acid); color: var(--gx-black); }
.content-label--lab { background: var(--gx-brand-lab); color: var(--gx-black); }
.content-label--guide { background: var(--gx-brand-sky); color: var(--gx-black); }
.content-label--academy { background: var(--gx-brand-peach); color: var(--gx-black); }
.editorial-labels { display: inline-flex; align-items: center; gap: .375rem; vertical-align: middle; }
.original-meta { display: flex; align-items: center; flex-wrap: wrap; gap: .55rem; }
.original-meta > .content-label, .original-meta > .editorial-labels { flex-shrink: 0; }
.original-topic { color: var(--gx-muted); font-size: .72rem; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.gx-hot-badge { display: inline-flex; align-items: center; justify-content: center; flex: 0 0 1rem; width: 1rem; height: 1rem; border-radius: var(--gx-radius-round); background: var(--gx-hot); color: var(--gx-white); vertical-align: middle; line-height: 1; }
.gx-hot-badge .ph { display: block; font-size: .75rem; line-height: 1; }
.gx-nav-badge { display: inline-flex; align-items: center; justify-content: center; box-sizing: border-box; height: 1.2rem; padding: .25rem .42rem .05rem; border: 1px solid currentColor; border-radius: var(--gx-radius-round); font: 700 .58rem/1 var(--gx-font-body); letter-spacing: .04em; text-transform: uppercase; white-space: nowrap; }
.gx-card { overflow: hidden; border: 1px solid var(--gx-border); border-radius: var(--gx-radius-md); background: var(--gx-surface-1); transition: var(--gx-duration) var(--gx-ease); }
.gx-card:hover { border-color: var(--gx-border-strong); transform: translateY(-4px); box-shadow: var(--gx-shadow-lift); }
.gx-card__media { min-height: 180px; background: linear-gradient(135deg, var(--gx-brand-sky), var(--gx-brand-mint)); }
.gx-card__body { padding: var(--gx-space-6); }
.gx-card__body > * + * { margin-top: var(--gx-space-3); }
.gx-alert { display: flex; gap: .75rem; padding: 1rem 1.125rem; border: 1px solid var(--gx-border); border-left: 3px solid var(--gx-info); border-radius: var(--gx-radius-sm); background: var(--gx-surface-1); }
.gx-alert--success { border-left-color: var(--gx-acid); }
.gx-alert--warning { border-left-color: var(--gx-amber); }
.gx-input { width: 100%; min-height: 48px; padding: .75rem 1rem; border: 1px solid var(--gx-border); border-radius: var(--gx-radius-sm); background: var(--gx-surface-1); color: var(--gx-white); }
.gx-input::placeholder { color: #777; }
.gx-input:hover { border-color: var(--gx-border-strong); }
.gx-input:focus { border-color: var(--gx-acid); outline: none; }
.gx-rule { border: 0; border-top: 1px solid var(--gx-border); }
.icon-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: .75rem; }
.icon-sample { min-height: 150px; padding: 1.25rem; border: 1px solid var(--gx-border); border-radius: var(--gx-radius-md); background: var(--gx-surface-1); display: flex; flex-direction: column; justify-content: flex-end; gap: .35rem; }
.icon-sample > .ph { margin-bottom: auto; color: var(--gx-acid); font-size: var(--gx-icon-xl); }
.icon-sample strong { font: 600 .9rem var(--gx-font-display); }
.icon-sample code { color: var(--gx-muted); font-size: .72rem; }
.icon-scale { display: flex; align-items: end; gap: 2rem; }
.icon-scale div { min-width: 56px; display: grid; justify-items: center; gap: .6rem; color: var(--gx-muted); font-size: .75rem; }
.icon-scale div:nth-child(1) .ph { font-size: var(--gx-icon-sm); }
.icon-scale div:nth-child(2) .ph { font-size: var(--gx-icon-md); }
.icon-scale div:nth-child(3) .ph { font-size: var(--gx-icon-lg); }
.icon-scale div:nth-child(4) .ph { font-size: var(--gx-icon-xl); }
.gx-sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
@media (max-width: 1080px) { .gx-internal-header .gx-container { gap: 1.25rem; } .gx-primary-nav { gap: 1rem; font-size: .8rem; } .gx-internal-back { display: none; } }
@media (max-width: 760px) { .gx-internal-header { padding: .85rem 0 .7rem; } .gx-internal-header .gx-container { grid-template-columns: 1fr; gap: .75rem; } .gx-primary-nav { width: 100%; justify-self: stretch; justify-content: flex-start; overflow-x: auto; padding-bottom: .2rem; scrollbar-width: none; } .gx-primary-nav::-webkit-scrollbar { display: none; } .icon-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) { .gx-container { width: min(100% - 26px, var(--gx-content)); } .gx-logo { width: 124px; } }
@media (max-width: 420px) { .icon-grid { grid-template-columns: 1fr; } .icon-scale { justify-content: space-between; gap: .5rem; } }