/* ==========================================================================
   TtMr — layout: container, header, nav, footer, section shells
   ========================================================================== */
.container { width: 100%; max-width: var(--container); margin-inline: auto; padding-inline: var(--gutter); }
/* Narrow content keeps the standard container width (so its left edge lines up
   with every other section) but constrains the inner blocks to a readable width,
   left-aligned. */
.container--narrow { max-width: var(--container); }
.container--narrow > * { max-width: var(--container-narrow); }
/* Narrow content is centred on blog posts and on inner pages (the front page
   keeps its left-aligned sections). */
.single .container--narrow > *,
.page:not(.home) .container--narrow > * { margin-inline: auto; }

/* ---- Section shells (background variants + spacing) ---- */
.section { position: relative; padding-block: var(--space-section); }
.section--space-tight { padding-block: var(--space-tight); }
.section--space-loose { padding-block: var(--space-loose); }

.section--bg-white { background: var(--white); color: var(--text); }
.section--bg-paper { background: var(--paper); color: var(--text); }
.section--bg-steel { background: var(--steel); color: var(--text-invert); }
.section--bg-ink   { background: var(--ink);   color: var(--text-invert); }

.section--bg-steel .section__lead, .section--bg-ink .section__lead { color: var(--text-invert-muted); }

/* Soft atmospheric glow on dark sections (no grid). */
.section--bg-ink::before, .section--bg-steel::before {
	content: ""; position: absolute; inset: 0; pointer-events: none;
	background:
		radial-gradient(55% 120% at 88% -10%, rgba(56, 189, 248, .14), transparent 60%),
		radial-gradient(45% 120% at 0% 115%, rgba(37, 99, 235, .16), transparent 60%);
}
.section > * { position: relative; z-index: 1; }

/* ---- Section heads ---- */
.section__head { max-width: 760px; margin-bottom: clamp(2rem, 4vw, 3.5rem); }
.section__head--center { margin-inline: auto; text-align: center; }
.section__eyebrow {
	font-family: var(--font-mono); font-size: var(--fs-eyebrow); font-weight: 600;
	letter-spacing: .18em; text-transform: uppercase; color: var(--blue);
	display: inline-flex; align-items: center; gap: .6em; margin-bottom: 1rem;
}
.section__eyebrow::before { content: ""; width: 1.8rem; height: 2px; background: var(--blue); display: inline-block; }
.section--bg-ink .section__eyebrow, .section--bg-steel .section__eyebrow { color: var(--accent); }
.section--bg-ink .section__eyebrow::before, .section--bg-steel .section__eyebrow::before { background: var(--accent); }
.section__title { font-size: var(--fs-h2); }
.section__title--sm { font-size: var(--fs-h3); font-weight: 500; color: var(--text-muted); }
.section__lead { font-size: var(--fs-lead); color: var(--text-muted); margin-top: 1rem; }

/* ---- Header ---- */
.site-header {
	position: sticky; top: 0; z-index: 100;
	background: rgba(255,255,255,.82); backdrop-filter: saturate(160%) blur(12px);
	border-bottom: 1px solid var(--line);
}
.site-header__inner { display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; min-height: 76px; }
.site-header__logo { display: inline-flex; align-items: center; gap: .6rem; font-family: var(--font-heading); font-weight: 700; font-size: 1.2rem; color: var(--ink); letter-spacing: -.02em; }
.site-header__logo-img { max-height: 52px; width: auto; }
.site-header__logo-text { white-space: nowrap; }
@media (max-width: 480px) { .site-header__logo { gap: .45rem; } .site-header__logo-img { max-height: 42px; } .site-header__logo-text { font-size: 1.02rem; } }
.site-header__logo-mark {
	display: inline-grid; place-items: center; width: 38px; height: 38px; border-radius: 10px;
	background: linear-gradient(135deg, var(--blue), var(--accent)); color: #fff; font-family: var(--font-heading); font-weight: 700;
}
.site-nav { display: flex; align-items: center; gap: 2rem; }
.site-nav__menu { display: flex; align-items: center; gap: 1.6rem; }
.site-nav__menu a { font-family: var(--font-heading); font-weight: 500; font-size: .98rem; color: var(--ink); position: relative; }
.site-nav__menu a::after { content: ""; position: absolute; left: 0; bottom: -6px; width: 0; height: 2px; background: var(--blue); transition: width var(--dur) var(--ease); }
.site-nav__menu a:hover::after, .site-nav__menu .current-menu-item > a::after { width: 100%; }
.site-nav__cta { margin-left: .5rem; }

/* ---- Services icon dropdown ---- */
.site-nav__menu .menu-item-has-children { position: relative; }
.site-nav__menu .menu-item-has-children > a { display: inline-flex; align-items: center; gap: .3rem; }
.menu-caret { width: 15px; height: 15px; opacity: .55; transition: transform var(--dur) var(--ease); }
.site-nav__menu .menu-item-has-children:hover .menu-caret,
.site-nav__menu .menu-item-has-children:focus-within .menu-caret { transform: rotate(180deg); }
.site-nav__menu .sub-menu {
	list-style: none; margin: 0; padding: .5rem;
	position: absolute; top: 100%; left: -.85rem; min-width: 300px;
	background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
	box-shadow: var(--shadow); display: grid; gap: .12rem; z-index: 60;
	opacity: 0; visibility: hidden; transform: translateY(8px);
	transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease), visibility var(--dur);
}
.site-nav__menu .menu-item-has-children:hover .sub-menu,
.site-nav__menu .menu-item-has-children:focus-within .sub-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.site-nav__menu .sub-menu a { display: flex; align-items: center; gap: .75rem; padding: .6rem .65rem; border-radius: var(--radius-sm); font-weight: 500; color: var(--ink); }
.site-nav__menu .sub-menu a::after { display: none; }
.site-nav__menu .sub-menu a:hover { background: var(--paper-2); }
.site-nav__menu .sub-menu .menu-icon {
	box-sizing: border-box; flex: 0 0 auto; width: 38px; height: 38px; padding: 8px;
	border-radius: 10px; background: var(--paper-2); color: var(--blue);
	transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}
.site-nav__menu .sub-menu a:hover .menu-icon { background: var(--blue); color: #fff; }
.submenu-toggle { display: none; } /* desktop uses hover; mobile shows the toggle button */
.nav-backdrop, .nav-close { display: none; } /* shown only on mobile when the sidebar is open */

.site-header__toggle { display: none; flex-direction: column; gap: 5px; width: 44px; height: 44px; border: 0; background: transparent; cursor: pointer; padding: 10px; }
.site-header__toggle span { height: 2px; background: var(--ink); border-radius: 2px; transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease); }
.site-header__toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.site-header__toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.site-header__toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---- Mobile menu: full-height right slide-in sidebar ---- */
@media (max-width: 1100px) {
	.site-header__toggle { display: flex; }
	body.nav-open { overflow: hidden; }

	/* The header's backdrop-filter creates a containing block + stacking context
	   that would trap the fixed drawer; drop it on mobile and lift the header
	   (with the drawer inside it) above the backdrop when the menu is open. */
	.site-header { background: rgba(255, 255, 255, .97); -webkit-backdrop-filter: none; backdrop-filter: none; }
	body.nav-open .site-header { z-index: 1001; }

	.site-nav {
		position: fixed; inset: 0 0 0 auto; z-index: 1000;
		width: min(88vw, 380px); height: 100dvh;
		flex-direction: column; align-items: stretch; gap: 0;
		overflow-y: auto; -webkit-overflow-scrolling: touch;
		background: linear-gradient(165deg, var(--ink) 0%, var(--steel) 72%, var(--steel-2) 100%);
		padding: 4.75rem var(--gutter) 2.5rem;
		box-shadow: -24px 0 60px rgba(7, 11, 20, .45);
		transform: translateX(100%); visibility: hidden;
		transition: transform .4s var(--ease), visibility .4s;
	}
	.site-nav.is-open { transform: translateX(0); visibility: visible; }

	/* Close (X) button inside the panel. */
	.nav-close {
		position: absolute; top: 1.1rem; right: 1.1rem; z-index: 2;
		display: inline-grid; place-items: center; width: 44px; height: 44px;
		border: 0; border-radius: 12px; background: rgba(255, 255, 255, .08); color: #fff; cursor: pointer;
		transition: background var(--dur) var(--ease);
	}
	.nav-close:hover { background: rgba(255, 255, 255, .16); }
	.nav-close svg { width: 24px; height: 24px; }

	/* Full-viewport dimmed backdrop (click to close). */
	.nav-backdrop {
		display: block; position: fixed; inset: 0; z-index: 999;
		background: rgba(7, 11, 20, .55); -webkit-backdrop-filter: blur(2px); backdrop-filter: blur(2px);
		opacity: 0; visibility: hidden; transition: opacity .4s var(--ease), visibility .4s;
	}
	body.nav-open .nav-backdrop { opacity: 1; visibility: visible; }

	.site-nav__menu { flex-direction: column; align-items: stretch; gap: 0; }
	/* Entrance reveal — animation (not a persistent opacity:0) so items can never get stuck hidden. */
	.site-nav.is-open .site-nav__menu > li { animation: ttmr-navin .45s var(--ease) both; }
	.site-nav.is-open .site-nav__menu > li:nth-child(1) { animation-delay: .06s; }
	.site-nav.is-open .site-nav__menu > li:nth-child(2) { animation-delay: .11s; }
	.site-nav.is-open .site-nav__menu > li:nth-child(3) { animation-delay: .16s; }
	.site-nav.is-open .site-nav__menu > li:nth-child(4) { animation-delay: .21s; }
	.site-nav.is-open .site-nav__menu > li:nth-child(5) { animation-delay: .26s; }
	.site-nav.is-open .site-nav__menu > li:nth-child(6) { animation-delay: .31s; }
	.site-nav.is-open .site-nav__menu > li:nth-child(7) { animation-delay: .36s; }
	.site-nav.is-open .site-nav__menu > li:nth-child(8) { animation-delay: .41s; }
	.site-nav.is-open .site-nav__menu > li:nth-child(9) { animation-delay: .46s; }

	.site-nav__menu a {
		display: flex; align-items: center; justify-content: space-between;
		padding: 1rem .1rem; border-bottom: 1px solid var(--line-soft);
		color: var(--text-invert); font-size: 1.2rem; font-weight: 600;
	}
	.site-nav__menu a::after { display: none; }
	.site-nav__menu a:hover, .site-nav__menu .current-menu-item > a { color: var(--accent); }

	/* Services parent: link + a coloured toggle button on one row. */
	.site-nav__menu .menu-item-has-children { display: flex; flex-wrap: wrap; align-items: center; column-gap: .6rem; }
	.site-nav__menu .menu-item-has-children > a { flex: 1; min-width: 0; border-bottom: 1px solid var(--line-soft); }
	.site-nav__menu .menu-item-has-children > a .menu-caret { display: none; } /* replaced by the button */

	.submenu-toggle {
		display: inline-grid; place-items: center; flex: 0 0 auto; width: 42px; height: 42px;
		border: 0; border-radius: 11px; background: var(--blue); color: #fff; cursor: pointer;
		transition: background var(--dur) var(--ease);
	}
	.submenu-toggle svg { width: 22px; height: 22px; transition: transform var(--dur) var(--ease); }
	.menu-item-has-children.is-expanded .submenu-toggle { background: var(--accent); color: var(--ink); }
	.menu-item-has-children.is-expanded .submenu-toggle svg { transform: rotate(180deg); }

	/* Submenu: collapsed accordion, expands when the parent has .is-expanded. */
	.site-nav__menu .sub-menu {
		flex-basis: 100%; position: static; visibility: visible; transform: none;
		min-width: 0; background: transparent; border: 0; box-shadow: none;
		max-height: 0; opacity: 0; overflow: hidden; padding: 0 0 0 .25rem;
		transition: max-height var(--dur) var(--ease), opacity var(--dur) var(--ease), padding var(--dur) var(--ease);
	}
	.menu-item-has-children.is-expanded .sub-menu { max-height: 600px; opacity: 1; padding: .35rem 0 .85rem .25rem; }
	.site-nav__menu .sub-menu a { display: flex; align-items: center; gap: .85rem; color: var(--text-invert-muted); font-size: 1.02rem; font-weight: 500; padding: .6rem 0; border-bottom: 0; }
	.site-nav__menu .sub-menu a:hover { background: transparent; color: #fff; }
	.site-nav__menu .sub-menu .menu-icon { width: 34px; height: 34px; padding: 7px; background: rgba(255, 255, 255, .07); color: var(--accent); }

	.site-nav__cta { margin: 1.6rem 0 0; justify-content: center; padding: .95em 1.5em; font-size: 1rem; }
	.site-nav.is-open .site-nav__cta { animation: ttmr-navin .45s var(--ease) .5s both; }
}

@keyframes ttmr-navin {
	from { opacity: 0; transform: translateX(24px); }
	to   { opacity: 1; transform: none; }
}

@media (prefers-reduced-motion: reduce) {
	.site-nav { transition: none !important; }
	.site-nav.is-open .site-nav__menu > li, .site-nav.is-open .site-nav__cta { animation: none !important; }
}

/* ---- Footer ---- */
.site-footer {
	position: relative;
	background: linear-gradient(180deg, var(--ink) 0%, var(--ink-2) 100%);
	color: var(--text-invert); padding-block: clamp(3.5rem, 7vw, 5.5rem) 1.75rem;
}
/* datum accent line along the top edge */
.site-footer::before {
	content: ""; position: absolute; left: 0; right: 0; top: 0; height: 2px;
	background: linear-gradient(90deg, var(--blue) 0%, var(--accent) 24%, transparent 62%);
	opacity: .8;
}
.site-footer__inner { display: grid; grid-template-columns: 1.8fr 1fr 1fr 1.3fr; gap: clamp(2rem, 4vw, 3.5rem); }
.site-footer__col { min-width: 0; }

.site-footer__brand { display: flex; flex-direction: column; gap: 1.1rem; align-items: flex-start; }
.site-footer__logo { display: inline-flex; align-items: center; gap: .7rem; color: #fff; }
.site-footer__logo-img { width: auto; height: 54px; filter: brightness(0) invert(1); opacity: .95; }
.site-footer__name { font-family: var(--font-heading); font-weight: 700; font-size: 1.2rem; }
.site-footer__text { color: var(--text-invert-muted); max-width: 36ch; font-size: .96rem; line-height: 1.6; }
.site-footer__social { display: flex; flex-wrap: wrap; gap: .7rem; margin: .6rem 0 1.1rem; }
.site-footer__social a {
	display: inline-grid; place-items: center; width: 40px; height: 40px;
	border-radius: 10px; background: rgba(255, 255, 255, .07); color: var(--text-invert-muted);
	transition: background var(--dur) var(--ease), color var(--dur) var(--ease), transform var(--dur) var(--ease);
}
.site-footer__social a:hover { background: var(--blue); color: #fff; transform: translateY(-2px); }
.site-footer__social svg { width: 19px; height: 19px; }

.site-footer__title {
	font-family: var(--font-mono); font-size: .78rem; font-weight: 600; letter-spacing: .16em;
	text-transform: uppercase; color: var(--accent); margin-bottom: 1.15rem;
}
.site-footer__list { list-style: none; display: flex; flex-direction: column; gap: .65rem; }
.site-footer__list a { color: var(--text-invert-muted); transition: color var(--dur) var(--ease), padding var(--dur) var(--ease); }
.site-footer__list a:hover { color: #fff; padding-left: .25rem; }

.site-footer__contact { }
.site-footer__contact-row { display: inline-flex; align-items: center; gap: .6rem; color: var(--text-invert-muted); margin-bottom: .7rem; }
.site-footer__contact-row svg { width: 18px; height: 18px; color: var(--accent); flex: 0 0 auto; }
a.site-footer__contact-row:hover { color: #fff; }
.site-footer__cta { margin-top: .6rem; }

.site-footer__bottom {
	margin-top: clamp(2.5rem, 5vw, 3.5rem); padding-top: 1.5rem; border-top: 1px solid var(--line-soft);
	color: var(--text-invert-muted); font-size: .88rem;
	display: flex; flex-wrap: wrap; gap: 1rem; align-items: center; justify-content: space-between;
}
.site-footer__legal { display: flex; flex-wrap: wrap; gap: 1.25rem; align-items: center; }
.site-footer__legal a, .site-footer__legal-btn { color: var(--text-invert-muted); font: inherit; }
.site-footer__legal-btn { background: none; border: 0; padding: 0; cursor: pointer; }
.site-footer__legal a:hover, .site-footer__legal-btn:hover { color: var(--accent); }

@media (max-width: 920px) { .site-footer__inner { grid-template-columns: 1fr 1fr; gap: 2.25rem; } .site-footer__brand { grid-column: 1 / -1; } }
@media (max-width: 560px) { .site-footer__inner { grid-template-columns: 1fr; gap: 2rem; } }

/* ---- Blog grids ---- */
.archive-header { margin-bottom: 2.5rem; }
.archive-header__title { font-size: var(--fs-h2); }
.post-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 2rem; }
.post-card { background: var(--white); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; transition: transform var(--dur) var(--ease), box-shadow var(--dur) var(--ease); }
.post-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); }
.post-card__body { padding: 1.5rem; }
.post-card__date { font-family: var(--font-mono); font-size: .8rem; color: var(--text-muted); }
.post-card__title { font-size: var(--fs-h3); margin: .4rem 0 .6rem; }
.post-card__excerpt { color: var(--text-muted); }
.post-card__more { display: inline-flex; align-items: center; gap: .4rem; margin-top: 1rem; font-family: var(--font-heading); font-weight: 600; }
.post-card__more svg { width: 18px; height: 18px; }
.pagination { margin-top: 3rem; }
.pagination .nav-links { display: flex; gap: .5rem; flex-wrap: wrap; }
.pagination a, .pagination .current { padding: .5rem .9rem; border: 1px solid var(--line); border-radius: 8px; }
.pagination .current { background: var(--blue); color: #fff; border-color: var(--blue); }

.page-title { font-size: var(--fs-h1); margin-bottom: 1.5rem; }
.single__date { font-family: var(--font-mono); font-size: .85rem; color: var(--text-muted); margin-bottom: 1.5rem; }
.single__media { margin: 0 0 2rem; border-radius: var(--radius-lg); overflow: hidden; }
.archive-header__desc { margin-bottom: 2rem; }