/*
Theme Name: Jazziii
Theme URI: https://jazziii.com
Author: John & Phil
Description: Custom theme for Jazziii.com — an engineering-spec-sheet-styled shrine to the Jazz III guitar pick. Flat design, dimensioned diagrams, and margin notes.
Version: 1.0.0
Requires at least: 6.0
Requires PHP: 7.4
Text Domain: jazziii
*/

/* ==========================================================================
   1. Custom properties
   ========================================================================== */

:root {
	/* Paper / ink */
	--color-paper: #fbf7ef;
	--color-paper-alt: #f2ede0;
	--color-ink: #1c1b18;
	--color-ink-soft: #5a564c;
	--color-ink-faint: #8b8677;
	--color-line: #cdc4a9;
	--color-line-strong: #1c1b18;

	/* Accents — placeholder pairing, see BRIEF.md open items */
	--color-john: #d9542f;
	--color-john-tint: #f9e2d6;
	--color-phil: #206b66;
	--color-phil-tint: #dbeae7;

	/* Type */
	--font-sans: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
	--font-mono: 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', Menlo, monospace;
	--font-hand: 'Kalam', cursive;

	/* Layout */
	--container-width: 1120px;
	--container-padding: 24px;
	--radius: 3px;
}

/* ==========================================================================
   2. Reset / base
   ========================================================================== */

*,
*::before,
*::after {
	box-sizing: border-box;
}

html {
	-webkit-text-size-adjust: 100%;
}

body {
	margin: 0;
	background-color: var(--color-paper);
	background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='48' height='48'%3E%3Cpath d='M48 0H0V48' fill='none' stroke='%23cdc4a9' stroke-width='1' opacity='0.35'/%3E%3C/svg%3E");
	color: var(--color-ink);
	font-family: var(--font-sans);
	font-size: 17px;
	line-height: 1.6;
	-webkit-font-smoothing: antialiased;
}

img {
	max-width: 100%;
	display: block;
}

a {
	color: inherit;
}

h1, h2, h3, h4 {
	font-family: var(--font-sans);
	font-weight: 700;
	line-height: 1.15;
	margin: 0 0 0.5em;
}

p {
	margin: 0 0 1.2em;
}

ul {
	margin: 0;
	padding: 0;
	list-style: none;
}

button {
	font-family: inherit;
}

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

/* ==========================================================================
   3. Layout helpers
   ========================================================================== */

.container {
	max-width: var(--container-width);
	margin: 0 auto;
	padding-left: var(--container-padding);
	padding-right: var(--container-padding);
}

.section {
	padding: 72px 0;
}

.section--alt {
	background: var(--color-paper-alt);
	border-top: 1px solid var(--color-line);
	border-bottom: 1px solid var(--color-line);
}

.eyebrow {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	font-family: var(--font-mono);
	font-size: 13px;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--color-ink-soft);
	margin: 0 0 14px;
}

.eyebrow .pick-icon {
	width: 12px;
	height: auto;
	color: var(--color-ink-faint);
}

/* ==========================================================================
   4. Pick icon
   ========================================================================== */

.pick-icon {
	display: inline-block;
	color: currentColor;
}

/* ==========================================================================
   5. Site header
   ========================================================================== */

.site-header {
	border-bottom: 1px solid var(--color-line);
	background: var(--color-paper);
	position: relative;
	z-index: 10;
}

.site-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding-top: 18px;
	padding-bottom: 18px;
}

.site-branding {
	display: flex;
	align-items: center;
	gap: 10px;
	text-decoration: none;
	color: var(--color-ink);
}

.site-branding .pick-icon {
	width: 22px;
}

.site-branding__name {
	font-family: var(--font-mono);
	font-weight: 700;
	font-size: 19px;
	letter-spacing: 0.02em;
}

.primary-nav ul {
	display: flex;
	gap: 4px;
}

.primary-nav a {
	display: inline-block;
	padding: 8px 14px;
	text-decoration: none;
	font-family: var(--font-mono);
	font-size: 14px;
	letter-spacing: 0.01em;
	color: var(--color-ink-soft);
	border-radius: var(--radius);
	transition: color 0.15s ease, background-color 0.15s ease;
}

.primary-nav a:hover,
.primary-nav a.is-current {
	color: var(--color-ink);
	background: var(--color-paper-alt);
}

.nav-toggle {
	display: none;
}

/* ==========================================================================
   6. Buttons
   ========================================================================== */

.btn {
	display: inline-flex;
	align-items: center;
	gap: 8px;
	font-family: var(--font-mono);
	font-size: 14px;
	letter-spacing: 0.02em;
	text-decoration: none;
	padding: 12px 20px;
	border: 1.5px solid var(--color-line-strong);
	border-radius: var(--radius);
	color: var(--color-ink);
	background: transparent;
}

.btn--solid {
	background: var(--color-ink);
	color: var(--color-paper);
}

.btn--solid:hover {
	background: var(--color-john);
	border-color: var(--color-john);
}

.btn:hover {
	background: var(--color-paper-alt);
}

.btn--solid:hover {
	color: var(--color-paper);
}

/* ==========================================================================
   7. Hero
   ========================================================================== */

.hero {
	padding: 64px 0 88px;
	overflow: hidden;
}

.hero__inner {
	display: grid;
	grid-template-columns: 1.05fr 0.95fr;
	gap: 48px;
	align-items: center;
}

.hero__headline {
	font-size: clamp(2.1rem, 4vw, 3.2rem);
	margin-bottom: 20px;
}

.hero__lede {
	font-size: 18px;
	color: var(--color-ink-soft);
	max-width: 46ch;
	margin-bottom: 32px;
}

.hero__actions {
	display: flex;
	gap: 12px;
	flex-wrap: wrap;
}

.hero__diagram {
	position: relative;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 20px;
}

.hero__diagram .pick-icon {
	width: 100%;
	max-width: 300px;
	height: auto;
	color: var(--color-paper-alt);
	stroke: var(--color-line-strong);
	stroke-width: 1.5;
}

.spec-tag {
	position: absolute;
	font-family: var(--font-mono);
	font-size: 12px;
	white-space: nowrap;
	color: var(--color-ink-soft);
	background: var(--color-paper);
	border: 1px solid var(--color-line);
	padding: 3px 8px;
	border-radius: 2px;
}

.spec-tag::after {
	content: '';
	position: absolute;
	background: var(--color-line-strong);
}

.spec-tag--length {
	top: 6%;
	left: -6%;
}
.spec-tag--length::after {
	top: 50%;
	left: 100%;
	width: 34px;
	height: 1px;
}

.spec-tag--bevel {
	bottom: 12%;
	right: -14%;
}
.spec-tag--bevel::after {
	top: 50%;
	right: 100%;
	width: 30px;
	height: 1px;
}

.spec-tag--tol {
	top: 42%;
	right: -18%;
}
.spec-tag--tol::after {
	top: 50%;
	right: 100%;
	width: 40px;
	height: 1px;
}

.hero__corner {
	position: absolute;
	width: 18px;
	height: 18px;
	border: 1px solid var(--color-line-strong);
}
.hero__corner--tl { top: 0; left: 0; border-width: 1px 0 0 1px; }
.hero__corner--tr { top: 0; right: 0; border-width: 1px 1px 0 0; }
.hero__corner--bl { bottom: 0; left: 0; border-width: 0 0 1px 1px; }
.hero__corner--br { bottom: 0; right: 0; border-width: 0 1px 1px 0; }

/* ==========================================================================
   8. Pillar cards
   ========================================================================== */

.pillars__heading {
	max-width: 60ch;
	margin-bottom: 44px;
}

.pillars__grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	gap: 28px;
}

.pillar-card {
	position: relative;
	padding: 28px 24px 26px;
	border: 1px solid var(--color-line);
	background: var(--color-paper);
	text-decoration: none;
	color: var(--color-ink);
	display: block;
}

.pillar-card::before,
.pillar-card::after,
.pillar-card .corner-br,
.pillar-card .corner-tr {
	content: '';
	position: absolute;
	width: 10px;
	height: 10px;
	border-color: var(--color-line-strong);
	border-style: solid;
}
.pillar-card::before { top: -1px; left: -1px; border-width: 1px 0 0 1px; }
.pillar-card::after { bottom: -1px; right: -1px; border-width: 0 1px 1px 0; }

.pillar-card__icon {
	width: 20px;
	height: auto;
	color: var(--color-ink-faint);
	margin-bottom: 18px;
}

.pillar-card__title {
	font-size: 20px;
	margin-bottom: 10px;
}

.pillar-card__text {
	color: var(--color-ink-soft);
	font-size: 15.5px;
	margin-bottom: 0;
}

.pillar-card__tag {
	display: inline-block;
	margin-top: 18px;
	font-family: var(--font-mono);
	font-size: 12px;
	letter-spacing: 0.06em;
	text-transform: uppercase;
	color: var(--color-ink-faint);
}

/* ==========================================================================
   9. Authors teaser (homepage)
   ========================================================================== */

.authors-teaser {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 28px;
	align-items: stretch;
}

.author-card {
	display: flex;
	gap: 18px;
	align-items: flex-start;
	padding: 24px;
	border: 1px solid var(--color-line);
	background: var(--color-paper);
}

.author-card__avatar {
	width: 72px;
	height: 72px;
	border-radius: 50%;
	object-fit: cover;
	flex-shrink: 0;
	border: 2px solid var(--color-line-strong);
}

.author-card[data-author="john"] .author-card__avatar { border-color: var(--color-john); }
.author-card[data-author="phil"] .author-card__avatar { border-color: var(--color-phil); }

.author-card__name {
	font-size: 17px;
	margin-bottom: 4px;
}

.author-card__role {
	font-family: var(--font-mono);
	font-size: 12px;
	letter-spacing: 0.04em;
	text-transform: uppercase;
	margin-bottom: 10px;
	display: inline-block;
}

.author-card[data-author="john"] .author-card__role { color: var(--color-john); }
.author-card[data-author="phil"] .author-card__role { color: var(--color-phil); }

.author-card__text {
	color: var(--color-ink-soft);
	font-size: 15px;
	margin-bottom: 0;
}

.authors-teaser__cta {
	text-align: center;
	margin-top: 36px;
}

.byline {
	display: inline-flex;
	align-items: center;
	gap: 10px;
}

.byline__avatar {
	width: 36px;
	height: 36px;
	border-radius: 50%;
	object-fit: cover;
	border: 2px solid var(--color-line-strong);
}

.byline[data-author="john"] .byline__avatar { border-color: var(--color-john); }
.byline[data-author="phil"] .byline__avatar { border-color: var(--color-phil); }

.byline__text {
	font-family: var(--font-mono);
	font-size: 13px;
	color: var(--color-ink-soft);
}

/* ==========================================================================
   10. Margin note component
   ========================================================================== */

.margin-note {
	position: relative;
	font-family: var(--font-hand);
	font-size: 19px;
	line-height: 1.45;
	padding: 16px 20px;
	margin: 28px auto;
	max-width: 46ch;
	border: 1px solid var(--color-line);
	transform: rotate(-1deg);
}

.margin-note:nth-of-type(even) {
	transform: rotate(1deg);
}

.margin-note::before {
	content: attr(data-author) '\2019 s note';
	text-transform: capitalize;
	position: absolute;
	top: -11px;
	left: 16px;
	background: var(--color-paper);
	padding: 0 6px;
	font-family: var(--font-mono);
	font-size: 11px;
	letter-spacing: 0.05em;
	text-transform: uppercase;
	color: var(--color-ink-faint);
}

.margin-note[data-author="john"] {
	background: var(--color-john-tint);
	border-color: var(--color-john);
}
.margin-note[data-author="john"]::before { color: var(--color-john); }

.margin-note[data-author="phil"] {
	background: var(--color-phil-tint);
	border-color: var(--color-phil);
}
.margin-note[data-author="phil"]::before { color: var(--color-phil); }

.margin-note del {
	opacity: 0.55;
	text-decoration-color: currentColor;
}

.article-references {
	margin-top: 48px;
	padding-top: 24px;
	border-top: 1px solid var(--color-line);
}

.article-references h2 {
	font-family: var(--font-mono);
	font-size: 13px;
	letter-spacing: 0.06em;
	text-transform: uppercase;
	color: var(--color-ink-soft);
	margin-bottom: 14px;
}

.article-references ul {
	display: flex;
	flex-direction: column;
	gap: 8px;
}

.article-references li {
	font-size: 14px;
	color: var(--color-ink-soft);
}

.article-references a {
	color: var(--color-ink);
	text-decoration: underline;
	text-decoration-color: var(--color-line);
	text-underline-offset: 3px;
}

.article-references a:hover {
	text-decoration-color: currentColor;
}

/* ==========================================================================
   11. Page header (interior pages)
   ========================================================================== */

.page-header {
	padding: 56px 0 8px;
	text-align: center;
}

.page-header__eyebrow {
	justify-content: center;
}

.page-header__title {
	font-size: clamp(2rem, 3.6vw, 2.8rem);
	max-width: 20ch;
	margin: 0 auto 14px;
}

.page-header__lede {
	max-width: 56ch;
	margin: 0 auto;
	color: var(--color-ink-soft);
	font-size: 17px;
}

/* ==========================================================================
   12. About page
   ========================================================================== */

.about-intro {
	max-width: 68ch;
	margin: 0 auto;
	font-size: 18px;
}

.about-intro p {
	margin-bottom: 1.3em;
}

.about-authors {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: 40px;
	max-width: 760px;
	margin: 56px auto 0;
}

.about-author {
	text-align: center;
}

.about-author__avatar {
	width: 100%;
	max-width: 240px;
	aspect-ratio: 1 / 1;
	object-fit: cover;
	border-radius: 50%;
	border: 3px solid var(--color-line-strong);
	margin: 0 auto 18px;
}

.about-author[data-author="john"] .about-author__avatar { border-color: var(--color-john); }
.about-author[data-author="phil"] .about-author__avatar { border-color: var(--color-phil); }

.about-author__name {
	font-size: 20px;
	margin-bottom: 4px;
}

.about-author__role {
	font-family: var(--font-mono);
	font-size: 12.5px;
	letter-spacing: 0.05em;
	text-transform: uppercase;
	color: var(--color-ink-faint);
}

.about-author[data-author="john"] .about-author__role { color: var(--color-john); }
.about-author[data-author="phil"] .about-author__role { color: var(--color-phil); }

.about-cta {
	text-align: center;
	margin-top: 56px;
}

/* ==========================================================================
   13. Site footer
   ========================================================================== */

.site-footer {
	border-top: 1px solid var(--color-line);
	padding: 40px 0;
	margin-top: 40px;
}

.site-footer__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 24px;
	flex-wrap: wrap;
}

.site-footer__brand {
	display: flex;
	align-items: center;
	gap: 10px;
	font-family: var(--font-mono);
	font-size: 14px;
	color: var(--color-ink-soft);
}

.site-footer__brand .pick-icon {
	width: 16px;
	color: var(--color-ink-faint);
}

.site-footer__nav ul {
	display: flex;
	gap: 18px;
}

.site-footer__nav a {
	font-family: var(--font-mono);
	font-size: 13px;
	text-decoration: none;
	color: var(--color-ink-soft);
}

.site-footer__nav a:hover {
	color: var(--color-ink);
}

.site-footer__meta {
	font-family: var(--font-mono);
	font-size: 12px;
	color: var(--color-ink-faint);
	width: 100%;
	margin-top: 8px;
	text-align: center;
}

/* ==========================================================================
   14. Responsive
   ========================================================================== */

@media (max-width: 900px) {
	.hero__inner {
		grid-template-columns: 1fr;
	}

	.hero__diagram {
		order: -1;
		max-width: 320px;
		margin: 0 auto;
	}

	.pillars__grid {
		grid-template-columns: 1fr;
	}

	.authors-teaser,
	.about-authors {
		grid-template-columns: 1fr;
	}

	.spec-tag--length { left: 2%; }
	.spec-tag--bevel { right: 2%; }
	.spec-tag--tol { right: 2%; }
}

@media (max-width: 640px) {
	.primary-nav ul {
		gap: 0;
	}

	.primary-nav a {
		padding: 8px 10px;
		font-size: 13px;
	}

	.site-footer__inner {
		flex-direction: column;
		align-items: flex-start;
	}
}