@import url("https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600&family=IBM+Plex+Sans:wght@400;500;600;700&display=swap");

/*
  Shared design system for justin.1waters.com.
  Loaded after Bootstrap's CSS on every page — Bootstrap supplies layout
  utilities/grid and a few JS-driven components (alert dismiss, the
  carousel on one blog post); everything visual is re-themed here.

  Two-voice type system: IBM Plex Sans carries what JD writes (headings,
  prose); IBM Plex Mono carries how the site is structured (nav, dates,
  tags, footer, code) — content vs. chrome, spoken in different voices.
*/

/* ---------------------------------------------------------------------- */
/* Tokens                                                                  */
/* ---------------------------------------------------------------------- */
:root {
	--font-sans: "IBM Plex Sans", -apple-system, BlinkMacSystemFont, "Segoe UI",
		Roboto, Helvetica, Arial, sans-serif;
	--font-mono: "IBM Plex Mono", ui-monospace, SFMono-Regular, "SF Mono", Menlo,
		Consolas, monospace;

	--bg: #0a0a0c;
	--bg-elevated: #131316;
	--surface: rgba(244, 243, 239, 0.04);
	--surface-hover: rgba(244, 243, 239, 0.07);
	--hairline: rgba(244, 243, 239, 0.11);
	--hairline-strong: rgba(244, 243, 239, 0.24);

	--text-primary: rgba(244, 243, 239, 0.94);
	--text-secondary: rgba(244, 243, 239, 0.56);
	--text-tertiary: rgba(244, 243, 239, 0.34);

	--accent: #4c86ff;
	--accent-strong: #6fa0ff;
	--accent-2: #7fb2ff;
	--red: #ff6b5e;
	--green: #55d98d;

	--radius-sm: 6px;
	--radius-md: 10px;
	--radius-lg: 14px;
	--radius-pill: 999px;

	--ease-out: cubic-bezier(0.22, 1, 0.36, 1); /* critically-damped-ish settle */

	--nav-h: 52px;
}

/* Native cross-document view transitions where supported; a no-op elsewhere. */
@view-transition {
	navigation: auto;
}

/* ---------------------------------------------------------------------- */
/* Re-theme Bootstrap's dark mode with our tokens                          */
/* ---------------------------------------------------------------------- */
[data-bs-theme="dark"] {
	--bs-body-bg: var(--bg);
	--bs-body-color: var(--text-primary);
	--bs-border-color: var(--hairline);
	--bs-link-color: var(--accent-2);
	--bs-link-hover-color: var(--accent-strong);
	--bs-secondary-color: var(--text-secondary);
	--bs-tertiary-bg: var(--bg-elevated);
	--bs-secondary-bg: var(--bg-elevated);
	--bs-emphasis-color: var(--text-primary);
	--bs-primary: var(--accent);
	--bs-primary-rgb: 76, 134, 255;
}

html,
body {
	background: var(--bg);
	color: var(--text-primary);
}

body {
	font-family: var(--font-sans);
	-webkit-font-smoothing: antialiased;
}

/* ---------------------------------------------------------------------- */
/* Typography                                                              */
/* ---------------------------------------------------------------------- */
.display {
	font-size: clamp(2rem, 5.6vw, 4.4rem);
	font-weight: 700;
	line-height: 1.02;
	letter-spacing: -0.03em;
}

h1,
.h1 {
	font-size: clamp(1.6rem, 4vw, 2.4rem);
	font-weight: 700;
	line-height: 1.1;
	letter-spacing: -0.02em;
}

h2,
.h2 {
	font-size: clamp(1.2rem, 2.4vw, 1.6rem);
	font-weight: 600;
	line-height: 1.2;
	letter-spacing: -0.015em;
}

h3,
.h3 {
	font-weight: 600;
	letter-spacing: -0.01em;
}

.lead {
	font-size: 1.05rem;
	line-height: 1.55;
	letter-spacing: -0.005em;
	color: var(--text-secondary);
}

p,
li {
	line-height: 1.6;
}

/* The "chrome voice" — nav, meta, labels, footer, code. Always mono. */
.mono {
	font-family: var(--font-mono);
}

.eyebrow {
	display: inline-block;
	font-family: var(--font-mono);
	font-size: 0.72rem;
	font-weight: 500;
	letter-spacing: 0.06em;
	text-transform: uppercase;
	color: var(--text-tertiary);
}

.text-secondary-custom {
	color: var(--text-secondary) !important;
}

code,
kbd {
	font-family: var(--font-mono);
	font-size: 0.88em;
	border-radius: 5px;
}

kbd {
	background: var(--bg-elevated);
	border: 1px solid var(--hairline);
	color: var(--text-primary);
	padding: 0.15em 0.45em;
	box-shadow: none;
}

.avatar {
	border: 1px solid var(--hairline-strong);
	object-fit: cover;
}

/* ---------------------------------------------------------------------- */
/* Layout helpers                                                          */
/* ---------------------------------------------------------------------- */
.page-body {
	padding-top: var(--nav-h);
	min-height: 100dvh;
	display: flex;
	flex-direction: column;
}

.page-main {
	flex: 1;
}

/* ---------------------------------------------------------------------- */
/* Nav                                                                      */
/* ---------------------------------------------------------------------- */
.site-nav {
	position: fixed;
	inset: 0 0 auto 0;
	height: var(--nav-h);
	z-index: 1000;
	background: rgba(10, 10, 12, 0.44);
	border-bottom: 1px solid transparent;
	backdrop-filter: blur(18px) saturate(160%);
	-webkit-backdrop-filter: blur(18px) saturate(160%);
	transition: background-color 300ms var(--ease-out), border-color 300ms var(--ease-out);
}

.site-nav.is-scrolled {
	background: rgba(10, 10, 12, 0.7);
	border-bottom-color: var(--hairline);
}

.site-nav__inner {
	max-width: 940px;
	height: 100%;
	margin: 0 auto;
	padding: 0 1rem;
	display: flex;
	align-items: center;
	justify-content: space-between;
}

.site-nav__brand {
	font-family: var(--font-mono);
	font-weight: 500;
	font-size: 0.85rem;
	letter-spacing: 0.02em;
	color: var(--text-primary) !important;
	text-decoration: none;
}

.site-nav__toggle {
	display: flex;
	flex-direction: column;
	justify-content: center;
	gap: 4px;
	width: 34px;
	height: 34px;
	padding: 0;
	border: none;
	background: transparent;
	cursor: pointer;
}

.site-nav__toggle span {
	display: block;
	width: 17px;
	height: 2px;
	margin: 0 auto;
	background: var(--text-primary);
	border-radius: 2px;
	transition: transform 260ms var(--ease-out), opacity 200ms var(--ease-out);
}

.site-nav__toggle[aria-expanded="true"] span:nth-child(1) {
	transform: translateY(6px) rotate(45deg);
}
.site-nav__toggle[aria-expanded="true"] span:nth-child(2) {
	opacity: 0;
}
.site-nav__toggle[aria-expanded="true"] span:nth-child(3) {
	transform: translateY(-6px) rotate(-45deg);
}

.site-nav__panel {
	display: flex;
	flex-direction: column;
	gap: 0.25rem;
	position: absolute;
	top: calc(var(--nav-h) - 1px);
	left: 0.75rem;
	right: 0.75rem;
	padding: 0.5rem;
	background: rgba(15, 15, 17, 0.9);
	border: 1px solid var(--hairline);
	border-radius: var(--radius-md);
	backdrop-filter: blur(22px) saturate(160%);
	-webkit-backdrop-filter: blur(22px) saturate(160%);
	box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
	opacity: 0;
	transform: translateY(-6px) scale(0.98);
	transform-origin: top right;
	pointer-events: none;
	transition: opacity 220ms var(--ease-out), transform 220ms var(--ease-out);
}

.site-nav__panel.is-open {
	opacity: 1;
	transform: translateY(0) scale(1);
	pointer-events: auto;
}

.site-nav__link {
	display: block;
	font-family: var(--font-mono);
	padding: 0.5rem 0.65rem;
	font-size: 0.82rem;
	border-radius: var(--radius-sm);
	color: var(--text-secondary) !important;
	text-decoration: none;
	transition: background-color 150ms var(--ease-out), color 150ms var(--ease-out);
}

.site-nav__link:hover {
	background: var(--surface-hover);
	color: var(--text-primary) !important;
}

.site-nav__link[aria-current="page"] {
	color: var(--text-primary) !important;
	background: var(--surface);
}

@media (min-width: 768px) {
	.site-nav__toggle {
		display: none;
	}

	.site-nav__panel {
		position: static;
		flex-direction: row;
		gap: 0.25rem;
		padding: 0;
		background: transparent;
		border: none;
		backdrop-filter: none;
		-webkit-backdrop-filter: none;
		box-shadow: none;
		opacity: 1;
		transform: none;
		pointer-events: auto;
	}

	.site-nav__link {
		padding: 0.35rem 0.6rem;
	}
}

/* ---------------------------------------------------------------------- */
/* Blog post top bar (standalone posts have no full nav, just a way back)  */
/* ---------------------------------------------------------------------- */
.post-topbar {
	margin: 1.1rem auto 0;
	padding: 0 1.25rem;
}

.post-topbar__link {
	display: inline-flex;
	align-items: center;
	gap: 0.3rem;
	font-family: var(--font-mono);
	color: var(--text-secondary);
	text-decoration: none;
	font-size: 0.8rem;
	transition: color 150ms var(--ease-out), transform 150ms var(--ease-out);
}

.post-topbar__link:hover {
	color: var(--text-primary);
	transform: translateX(-2px);
}

/* ---------------------------------------------------------------------- */
/* Footer                                                                   */
/* ---------------------------------------------------------------------- */
.site-footer {
	margin-top: 3rem;
	padding: 1.25rem 1.25rem calc(1.25rem + env(safe-area-inset-bottom));
	text-align: center;
	background: rgba(10, 10, 12, 0.44);
	border-top: 1px solid var(--hairline);
	backdrop-filter: blur(18px) saturate(160%);
	-webkit-backdrop-filter: blur(18px) saturate(160%);
}

.site-footer p {
	margin: 0;
	font-family: var(--font-mono);
	font-size: 0.75rem;
	color: var(--text-tertiary);
}

/* ---------------------------------------------------------------------- */
/* Buttons — primary is high-contrast paper-on-ink, not a colored fill;    */
/* --accent is reserved for links, tags, and focus states.                 */
/* ---------------------------------------------------------------------- */
.btn-pill {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 0.4rem;
	padding: 0.5rem 1.1rem;
	border-radius: var(--radius-pill);
	font-weight: 600;
	font-size: 0.88rem;
	letter-spacing: -0.005em;
	text-decoration: none;
	border: 1px solid transparent;
	cursor: pointer;
	transition: transform 100ms ease-out, background-color 150ms var(--ease-out),
		border-color 150ms var(--ease-out), color 150ms var(--ease-out);
}

.btn-pill:active {
	transform: scale(0.96);
}

.btn-pill--primary {
	background: var(--text-primary);
	color: var(--bg);
}

.btn-pill--primary:hover {
	background: #fff;
	color: var(--bg);
}

.btn-pill--outline {
	background: transparent;
	border-color: var(--hairline-strong);
	color: var(--text-primary);
}

.btn-pill--outline:hover {
	background: var(--surface-hover);
	border-color: var(--text-secondary);
	color: var(--text-primary);
}

.btn-pill--icon {
	padding: 0.5rem;
	width: 38px;
	height: 38px;
}

/* ---------------------------------------------------------------------- */
/* Cards & tags                                                            */
/* ---------------------------------------------------------------------- */
.tile {
	display: block;
	padding: 1.15rem 1.25rem;
	background: transparent;
	border: 1px solid var(--hairline);
	border-radius: var(--radius-lg);
	text-decoration: none;
	color: inherit;
	transition: border-color 200ms var(--ease-out), background-color 200ms var(--ease-out);
}

a.tile:hover {
	border-color: var(--hairline-strong);
	background: var(--surface);
}

.tag {
	display: inline-flex;
	align-items: center;
	font-family: var(--font-mono);
	padding: 0.1rem 0.5rem;
	border-radius: var(--radius-sm);
	font-size: 0.68rem;
	letter-spacing: 0.01em;
}

.tag--red {
	background: rgba(255, 107, 94, 0.13);
	color: var(--red);
}

.tag--green {
	background: rgba(85, 217, 141, 0.13);
	color: var(--green);
}

/* ---------------------------------------------------------------------- */
/* Post list — editorial, hairline-divided index (blog.html)               */
/* ---------------------------------------------------------------------- */
.post-list {
	display: flex;
	flex-direction: column;
}

.post-row {
	display: flex;
	align-items: baseline;
	justify-content: space-between;
	flex-wrap: wrap;
	gap: 0.25rem 1.25rem;
	padding: 1.05rem 0.25rem;
	border-top: 1px solid var(--hairline);
	text-decoration: none;
	color: inherit;
	transition: padding-left 200ms var(--ease-out);
}

.post-list a.post-row:last-child {
	border-bottom: 1px solid var(--hairline);
}

.post-row:hover {
	padding-left: 0.5rem;
}

.post-row__title {
	font-weight: 600;
	font-size: 1.02rem;
	letter-spacing: -0.01em;
	transition: color 150ms var(--ease-out);
}

.post-row:hover .post-row__title {
	color: var(--accent-2);
}

.post-row__meta {
	display: flex;
	align-items: center;
	flex-wrap: wrap;
	gap: 0.5rem;
	font-family: var(--font-mono);
	font-size: 0.75rem;
	color: var(--text-tertiary);
	white-space: nowrap;
}

/* ---------------------------------------------------------------------- */
/* Alert (Bootstrap component, re-skinned)                                 */
/* ---------------------------------------------------------------------- */
.alert {
	background: var(--surface) !important;
	border: 1px solid var(--hairline) !important;
	color: var(--text-secondary) !important;
	border-radius: var(--radius-md) !important;
	font-size: 0.9rem;
}

.alert a {
	color: var(--accent-2);
}

/* ---------------------------------------------------------------------- */
/* Accessibility & reduced-* preferences                                   */
/* ---------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
	.site-nav__panel,
	.site-nav__toggle span,
	.tile,
	.post-row,
	.btn-pill {
		transition-duration: 1ms;
	}
}

@media (prefers-reduced-transparency: reduce) {
	.site-nav,
	.site-nav.is-scrolled,
	.site-nav__panel,
	.site-footer {
		background: var(--bg-elevated);
		backdrop-filter: none;
		-webkit-backdrop-filter: none;
	}
}

@media (prefers-contrast: more) {
	.site-nav,
	.site-footer {
		background: var(--bg);
		border-color: var(--hairline-strong);
	}

	.tile,
	.post-row {
		border-color: var(--hairline-strong);
	}
}