/*
Theme Name: Caine Rietbroek Portfolio
Theme URI: https://example.com/
Author: Caine Rietbroek
Author URI: https://example.com/
Description: A mobile-first portfolio theme inspired by Apple's Human Interface Guidelines. All backgrounds are CSS gradients driven by CSS custom properties (--cr-grad-1..4), and a curated palette randomizer recolours the whole site by changing those variables. Header and footer are intentionally minimal.
Version: 1.1.0
Requires at least: 6.0
Tested up to: 7.0
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: cr-portfolio
*/

/* ==========================================================================
   1. DESIGN TOKENS — Apple HIG-inspired
   The colour randomizer only overwrites --cr-grad-1 … --cr-grad-4.
   Every gradient is composed from those four stops, so picking a new
   palette repaints the hero, work tiles, footer and avatars at once.
   ========================================================================== */
:root {
	/* ----- Layout ----- */
	--cr-maxw: 100%;
	--cr-pad: var(--cr-s-5);

	/* ----- Spacing — 4pt grid (Apple's foundational rhythm) ----- */
	--cr-s-0: 0;
	--cr-s-1: 4px;
	--cr-s-2: 8px;
	--cr-s-3: 12px;
	--cr-s-4: 16px;
	--cr-s-5: 20px;
	--cr-s-6: 24px;
	--cr-s-7: 32px;
	--cr-s-8: 40px;
	--cr-s-9: 48px;
	--cr-s-10: 64px;
	--cr-s-11: 80px;
	--cr-s-12: 96px;

	/* ----- Radii — Apple continuous-feel corners ----- */
	--cr-r-1: 8px;
	--cr-r-2: 12px;
	--cr-r-3: 16px;
	--cr-r-4: 22px;
	--cr-r-5: 28px;
	--cr-r-pill: 980px;

	/* ----- Solid UI colours (system-grey inspired) ----- */
	--cr-bg: #fbfbfd;             /* apple.com page background */
	--cr-surface: #ffffff;
	--cr-surface-2: rgba(255, 255, 255, 0.72);   /* vibrancy / frosted */
	--cr-text: #1d1d1f;           /* SF label primary */
	--cr-text-2: #6e6e73;         /* SF label secondary */
	--cr-text-3: #86868b;         /* SF label tertiary */
	--cr-separator: rgba(0, 0, 0, 0.08);
	--cr-fill-quaternary: rgba(120, 120, 128, 0.08);
	--cr-placeholder: #f2f2f4;
	--cr-dark: #1d1d1f;
	--cr-on-dark: #ffffff;
	--cr-accent: #0071e3;         /* Apple system blue (web) */

	/* ----- Gradient stops: the four knobs the randomizer turns ----- */
	--cr-grad-1: #5b7cc4;
	--cr-grad-2: #8a7cc0;
	--cr-grad-3: #a9c7d6;
	--cr-grad-4: #c6b8db;

	/* ----- Composed gradients (built only from the stops above) ----- */
	--cr-gradient-hero:
		radial-gradient(120% 120% at 12% 18%, var(--cr-grad-3) 0%, transparent 55%),
		radial-gradient(120% 120% at 88% 12%, var(--cr-grad-4) 0%, transparent 50%),
		radial-gradient(130% 130% at 75% 90%, var(--cr-grad-2) 0%, transparent 55%),
		linear-gradient(135deg, var(--cr-grad-1), var(--cr-grad-2));

	--cr-gradient-footer:
		radial-gradient(120% 160% at 8% 0%, var(--cr-grad-3) 0%, transparent 60%),
		radial-gradient(120% 140% at 95% 100%, var(--cr-grad-4) 0%, transparent 55%),
		linear-gradient(155deg, var(--cr-grad-1), var(--cr-grad-2));

	--cr-gradient-work-1: linear-gradient(150deg, var(--cr-grad-3), var(--cr-grad-1));
	--cr-gradient-work-2: linear-gradient(150deg, var(--cr-grad-4), var(--cr-grad-2));
	--cr-gradient-work-3: linear-gradient(160deg, var(--cr-grad-3), var(--cr-grad-4));
	--cr-gradient-work-4: linear-gradient(135deg, var(--cr-grad-1), var(--cr-grad-3));

	/* Grain overlay (grayscale + blend so it never fights the palette). */
	--cr-noise: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='cr-n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23cr-n)' opacity='0.5'/%3E%3C/svg%3E");

	/* ----- Elevation — Apple's layered, soft shadows ----- */
	--cr-shadow-1: 0 1px 2px rgba(0, 0, 0, 0.04), 0 2px 6px rgba(0, 0, 0, 0.04);
	--cr-shadow-2: 0 2px 4px rgba(0, 0, 0, 0.04), 0 12px 28px rgba(0, 0, 0, 0.08);
	--cr-shadow-3: 0 4px 10px rgba(0, 0, 0, 0.05), 0 24px 60px -16px rgba(0, 0, 0, 0.18);
	--cr-shadow-glass: 0 1px 0 rgba(255, 255, 255, 0.6) inset, 0 12px 40px rgba(20, 24, 40, 0.18);

	/* ----- Motion — Apple's spring-flavoured ease-out ----- */
	--cr-ease: cubic-bezier(0.32, 0.72, 0, 1);
	--cr-ease-out: cubic-bezier(0.16, 1, 0.3, 1);
	--cr-dur-1: 180ms;
	--cr-dur-2: 280ms;
	--cr-dur-3: 420ms;

	/* ----- Type ----- */
	--cr-font:
		-apple-system, BlinkMacSystemFont, "SF Pro Text", "SF Pro Display",
		"Helvetica Neue", Helvetica, Arial, sans-serif;
	--cr-font-mono:
		ui-monospace, "SF Mono", Menlo, Monaco, Consolas, monospace;

	/* SF "Display" optical sizes use tighter tracking the bigger you go. */
	--cr-track-display: -0.022em;
	--cr-track-title: -0.016em;
	--cr-track-text: -0.011em;
}

/* ==========================================================================
   2. RESET / BASE
   ========================================================================== */
*, *::before, *::after { box-sizing: border-box; }

html {
	-webkit-text-size-adjust: 100%;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

body {
	margin: 0;
	background: var(--cr-bg);
	color: var(--cr-text);
	font-family: var(--cr-font);
	font-size: 17px;             /* SF body default */
	line-height: 1.47;
	letter-spacing: var(--cr-track-text);
	text-rendering: optimizeLegibility;
	font-feature-settings: "ss01", "cv11";
}

img, svg { max-width: 100%; height: auto; display: block; }

a { color: inherit; }

p { margin: 0; }

h1, h2, h3, h4 {
	margin: 0;
	font-family: var(--cr-font);
	font-weight: 600;             /* SF Semibold — Apple's default for headings */
	line-height: 1.08;
	letter-spacing: var(--cr-track-display);
}
h3, h4 { font-weight: 600; letter-spacing: var(--cr-track-title); }

::selection { background: rgba(0, 113, 227, 0.18); }

/* ==========================================================================
   3. LAYOUT HELPERS
   ========================================================================== */
.cr-container {
	width: 100%;
	max-width: var(--cr-maxw);
	margin-inline: auto;
	padding-inline: var(--cr-pad);
}

.cr-section { padding-block: var(--cr-s-10); }

.cr-section__head { margin-bottom: var(--cr-s-7); }

.cr-section__title {
	font-size: clamp(28px, 5.5vw, 40px);
	letter-spacing: var(--cr-track-display);
}

.cr-section__subtitle {
	margin-top: var(--cr-s-2);
	color: var(--cr-text-2);
	font-size: 17px;
	letter-spacing: var(--cr-track-text);
}

/* Visually hidden but accessible to screen readers (Apple/macOS-style). */
.cr-visually-hidden {
	position: absolute;
	width: 1px; height: 1px;
	padding: 0; margin: -1px;
	overflow: hidden; clip: rect(0, 0, 0, 0);
	white-space: nowrap; border: 0;
}

/* Skip link */
.cr-skip-link {
	position: absolute;
	left: -999px; top: 0;
	background: var(--cr-dark);
	color: var(--cr-on-dark);
	padding: var(--cr-s-3) var(--cr-s-4);
	border-radius: 0 0 var(--cr-r-2) 0;
	z-index: 100;
	font-weight: 500;
}
.cr-skip-link:focus { left: 0; }

/* Default focus ring — Apple "system blue" */
:focus-visible {
	outline: 2px solid var(--cr-accent);
	outline-offset: 2px;
	border-radius: 4px;
}

/* ==========================================================================
   4. BUTTONS — capsule-style, SF text weight, Apple spring on hover
   ========================================================================== */
.cr-btn {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: var(--cr-s-2);
	padding: 12px 22px;
	min-height: 44px;             /* HIG minimum touch target */
	border-radius: var(--cr-r-pill);
	border: 1px solid transparent;
	font: inherit;
	font-weight: 500;
	font-size: 16px;
	letter-spacing: var(--cr-track-text);
	text-decoration: none;
	cursor: pointer;
	transition:
		transform var(--cr-dur-1) var(--cr-ease),
		background-color var(--cr-dur-1) var(--cr-ease),
		opacity var(--cr-dur-1) var(--cr-ease);
}
.cr-btn:active { transform: scale(0.97); }

.cr-btn--light { background: #ffffff; color: var(--cr-dark); }
.cr-btn--light:hover { background: #f5f5f7; }

.cr-btn--ghost {
	background: rgba(255, 255, 255, 0.14);
	color: #ffffff;
	border-color: rgba(255, 255, 255, 0.45);
	backdrop-filter: saturate(180%) blur(8px);
	-webkit-backdrop-filter: saturate(180%) blur(8px);
}
.cr-btn--ghost:hover { background: rgba(255, 255, 255, 0.22); }

.cr-btn--dark { background: var(--cr-dark); color: var(--cr-on-dark); }
.cr-btn--dark:hover { background: #2c2c2e; }

.cr-btn--sm { padding: 8px 14px; min-height: 36px; font-size: 14px; }

/* ==========================================================================
   5. HEADER — minimal: site title + description, sticky frosted bar
   ========================================================================== */
.cr-header {
	position: sticky;
	top: 0;
	z-index: 40;
	background: rgba(251, 251, 253, 0.72);
	backdrop-filter: saturate(180%) blur(20px);
	-webkit-backdrop-filter: saturate(180%) blur(20px);
	border-bottom: 1px solid var(--cr-separator);
}
.cr-header__inner {
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: var(--cr-s-4);
	padding-block: var(--cr-s-3);
	max-width: var(100%);
	margin-inline: auto;
}
.cr-brand__title {
	font-weight: 600;
	font-size: 17px;
	line-height: 1.1;
	letter-spacing: var(--cr-track-title);
	text-decoration: none;
	color: var(--cr-text);
}
.cr-brand__desc {
	margin-top: 2px;
	font-size: 12px;
	color: var(--cr-text-2);
	font-weight: 400;
	letter-spacing: 0;
}

/* ==========================================================================
   6. HERO
   ========================================================================== */
.cr-hero {
	position: relative;
	margin-top: var(--cr-s-4);
	border-radius: var(--cr-r-5);
	background: var(--cr-gradient-hero);
	background-size: cover;
	color: #ffffff;
	overflow: hidden;
	padding: var(--cr-s-9) var(--cr-s-5) var(--cr-s-10);
	text-align: center;
	transition: background var(--cr-dur-3) var(--cr-ease);
}
.cr-hero__title {
	font-size: clamp(48px, 13vw, 72px);
	font-weight: 700;
	line-height: 0.98;
	letter-spacing: -0.03em;
	text-shadow: 0 2px 24px rgba(20, 24, 40, 0.15);
}
.cr-hero__actions {
	display: flex;
	flex-direction: column;
	gap: var(--cr-s-2);
	margin-top: var(--cr-s-6);
}

/* Showcase placeholder card that overlaps the hero (swap for a real image). */
.cr-showcase {
	margin: calc(var(--cr-s-7) * -1) auto 0;
	max-width: 920px;
	background: var(--cr-surface);
	border: 1px solid var(--cr-separator);
	border-radius: var(--cr-r-4);
	box-shadow: var(--cr-shadow-3);
	padding: var(--cr-s-3);
}
.cr-showcase__grid {
	display: grid;
	grid-template-columns: repeat(3, 1fr);
	grid-auto-rows: 38px;
	gap: var(--cr-s-2);
}
.cr-showcase__cell {
	background: var(--cr-placeholder);
	border-radius: var(--cr-r-1);
}
.cr-showcase__cell--wide { grid-column: span 2; }
.cr-showcase__cell--tall { grid-row: span 2; }

/* ==========================================================================
   7. WORK GRID ("Snel zien") — gradient + grain filler tiles
   ========================================================================== */
.cr-work__head {
	display: flex;
	flex-direction: column;
	gap: var(--cr-s-4);
	margin-bottom: var(--cr-s-7);
}
.cr-work__actions { display: flex; }

.cr-work__grid { column-count: 1; column-gap: var(--cr-s-4); }

.cr-work__item {
	display: block;
	width: 100%;
	margin-bottom: var(--cr-s-4);
	border-radius: var(--cr-r-3);
	background-image: var(--cr-noise), var(--cr-gradient-work-1);
	background-size: 160px 160px, cover;
	background-blend-mode: soft-light, normal;
	aspect-ratio: 4 / 3;
	break-inside: avoid;
	overflow: hidden;
	text-decoration: none;
	box-shadow: var(--cr-shadow-1);
	transition:
		transform var(--cr-dur-2) var(--cr-ease-out),
		box-shadow var(--cr-dur-2) var(--cr-ease-out),
		background var(--cr-dur-3) var(--cr-ease);
}
.cr-work__item:hover {
	transform: translateY(-2px) scale(1.005);
	box-shadow: var(--cr-shadow-3);
}
.cr-work__item:nth-child(4n+1) { background-image: var(--cr-noise), var(--cr-gradient-work-1); aspect-ratio: 1 / 1; }
.cr-work__item:nth-child(4n+2) { background-image: var(--cr-noise), var(--cr-gradient-work-2); aspect-ratio: 4 / 3; }
.cr-work__item:nth-child(4n+3) { background-image: var(--cr-noise), var(--cr-gradient-work-3); aspect-ratio: 1 / 1; }
.cr-work__item:nth-child(4n+4) { background-image: var(--cr-noise), var(--cr-gradient-work-4); aspect-ratio: 4 / 3; }

/* ==========================================================================
   8. TESTIMONIALS — frosted-glass cards
   ========================================================================== */
.cr-testimonials__grid {
	display: grid;
	grid-template-columns: 1fr;
	gap: var(--cr-s-4);
}
.cr-testimonial {
	background: var(--cr-surface);
	border: 1px solid var(--cr-separator);
	border-radius: var(--cr-r-3);
	padding: var(--cr-s-5);
	box-shadow: var(--cr-shadow-1);
}
.cr-testimonial__head {
	display: flex;
	align-items: center;
	gap: var(--cr-s-3);
	margin-bottom: var(--cr-s-3);
}
.cr-testimonial__avatar {
	flex: 0 0 auto;
	width: 40px;
	height: 40px;
	border-radius: 50%;
	display: grid;
	place-items: center;
	font-size: 20px;
	background: var(--cr-gradient-work-3);
	border: 1px solid var(--cr-separator);
	box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.4);
	transition: background var(--cr-dur-3) var(--cr-ease);
}
.cr-testimonial__name {
	font-weight: 600;
	font-size: 15px;
	letter-spacing: var(--cr-track-text);
}
.cr-testimonial__role {
	color: var(--cr-text-2);
	font-size: 13px;
}
.cr-testimonial__quote {
	font-size: 15px;
	line-height: 1.5;
	color: var(--cr-text);
	margin: 0;
}

/* ==========================================================================
   9. FOOTER
   ========================================================================== */
.cr-footer {
	margin-top: var(--cr-s-9);
	background: var(--cr-gradient-footer);
	background-size: cover;
	color: #ffffff;
	transition: background var(--cr-dur-3) var(--cr-ease);
}
.cr-footer__inner {
	display: flex;
	flex-direction: column;
	gap: var(--cr-s-1);
	padding-block: var(--cr-s-9);
	max-width: var(100%);
	margin-inline: auto;
	padding-inline: var(--cr-pad);
}
.cr-footer__brand {
	font-weight: 600;
	font-size: 20px;
	letter-spacing: var(--cr-track-title);
}
.cr-footer__copy {
	font-size: 13px;
	opacity: 0.92;
}

/* ==========================================================================
   10. GENERIC CONTENT FALLBACKS
   ========================================================================== */
.cr-main { padding-block: var(--cr-s-9); min-height: 40vh; }
.cr-post { padding-block: var(--cr-s-5); border-bottom: 1px solid var(--cr-separator); }
.cr-post__title {
	font-size: 24px;
	font-weight: 600;
	letter-spacing: var(--cr-track-title);
	margin-bottom: var(--cr-s-2);
}
.cr-post__title a { text-decoration: none; }
.cr-post__content { color: var(--cr-text-2); }
.cr-entry-content { max-width: 70ch; }
.cr-entry-content > * + * { margin-top: var(--cr-s-4); }

/* ==========================================================================
   11. COLOUR RANDOMIZER — visible floating control + toast
   Apple-style "Liquid Glass" capsule with backdrop-blur.
   ========================================================================== */
.cr-shuffle {
	position: fixed;
	right: var(--cr-s-4);
	bottom: var(--cr-s-4);
	z-index: 60;
	display: inline-flex;
	align-items: center;
	gap: var(--cr-s-2);
	padding: 10px 16px 10px 12px;
	min-height: 44px;
	border: 1px solid rgba(255, 255, 255, 0.55);
	border-radius: var(--cr-r-pill);
	background: rgba(29, 29, 31, 0.62);
	color: #ffffff;
	font: inherit;
	font-weight: 500;
	font-size: 14px;
	letter-spacing: var(--cr-track-text);
	cursor: pointer;
	backdrop-filter: saturate(180%) blur(20px);
	-webkit-backdrop-filter: saturate(180%) blur(20px);
	box-shadow: var(--cr-shadow-glass);
	transition:
		transform var(--cr-dur-1) var(--cr-ease),
		background var(--cr-dur-1) var(--cr-ease);
}
.cr-shuffle:hover { background: rgba(29, 29, 31, 0.78); }
.cr-shuffle:active { transform: scale(0.96); }

.cr-shuffle__dot {
	display: inline-block;
	width: 20px;
	height: 20px;
	border-radius: 50%;
	background:
		conic-gradient(from 0deg,
			var(--cr-grad-1),
			var(--cr-grad-2),
			var(--cr-grad-3),
			var(--cr-grad-4),
			var(--cr-grad-1));
	box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.4);
	transition: background var(--cr-dur-3) var(--cr-ease);
}

.cr-shuffle__label {
	display: inline-block;
	min-width: 0;
}

/* Toast (palette name confirmation) */
.cr-toast {
	position: fixed;
	left: 50%;
	bottom: calc(var(--cr-s-4) + 60px);
	transform: translate(-50%, 8px);
	opacity: 0;
	pointer-events: none;
	z-index: 65;
	padding: 10px 16px;
	border-radius: var(--cr-r-pill);
	background: rgba(29, 29, 31, 0.85);
	color: #ffffff;
	font-size: 13px;
	font-weight: 500;
	letter-spacing: var(--cr-track-text);
	backdrop-filter: saturate(180%) blur(20px);
	-webkit-backdrop-filter: saturate(180%) blur(20px);
	box-shadow: var(--cr-shadow-2);
	transition:
		opacity var(--cr-dur-2) var(--cr-ease-out),
		transform var(--cr-dur-2) var(--cr-ease-out);
}
.cr-toast--show {
	opacity: 1;
	transform: translate(-50%, 0);
}

/* ==========================================================================
   12. RESPONSIVE — mobile-first
   ========================================================================== */
@media (min-width: 700px) {
	:root { --cr-pad: var(--cr-s-6); }

	.cr-container { max-width: var(100%); }
	.cr-hero {
		padding: var(--cr-s-11) var(--cr-s-7) var(--cr-s-10);
	}
	.cr-hero__actions {
		flex-direction: row;
		justify-content: center;
		gap: var(--cr-s-3);
	}
	.cr-showcase__grid { grid-auto-rows: 54px; }

	.cr-work__head {
		flex-direction: row;
		align-items: flex-end;
		justify-content: space-between;
	}
	.cr-work__grid { column-count: 2; column-gap: var(--cr-s-5); }
	.cr-work__item { margin-bottom: var(--cr-s-5); }

	.cr-testimonials__grid { grid-template-columns: 1fr 1fr; }
}

@media (min-width: 1024px) {
	.cr-section { padding-block: var(--cr-s-12); }
	.cr-hero { padding: var(--cr-s-12) var(--cr-s-8) var(--cr-s-11); }
	.cr-hero__title { font-size: clamp(72px, 7vw, 104px); }
	.cr-shuffle__label { display: inline-block; }
}

/* ==========================================================================
   13. MOTION PREFERENCES
   ========================================================================== */
@media (prefers-reduced-motion: reduce) {
	*, *::before, *::after {
		animation-duration: 0.001ms !important;
		animation-iteration-count: 1 !important;
		transition-duration: 0.001ms !important;
		scroll-behavior: auto !important;
	}
}