/** Homepage. */

.d360-hero {
	display: grid;
	gap: var(--d360-sp-8);
	align-items: center;
	padding-block: var(--d360-sp-16) var(--d360-sp-12);
}

@media (min-width: 52rem) {
	.d360-hero { grid-template-columns: 1.15fr 0.85fr; gap: var(--d360-sp-16); }
}

.d360-hero h1 {
	margin-bottom: var(--d360-sp-4);
	font-size: clamp(2.3125rem, 1.6rem + 3vw, 3.5rem);
	letter-spacing: -0.03em;
	text-wrap: balance;
}

.d360-hero__lede {
	max-width: 34rem;
	margin-bottom: var(--d360-sp-6);
	font-size: var(--d360-fs-400);
	color: var(--d360-ink-2);
}

.d360-hero__actions { display: flex; flex-wrap: wrap; gap: var(--d360-sp-3); align-items: center; }
.d360-hero__note { margin: var(--d360-sp-4) 0 0; font-size: var(--d360-fs-100); color: var(--d360-ink-3); }

.d360-hero__panel {
	display: grid;
	justify-items: center;
	gap: var(--d360-sp-4);
	padding: var(--d360-sp-8);
	border: 1px solid var(--d360-hairline);
	border-radius: var(--d360-radius-card);
	background: var(--d360-surface);
	box-shadow: var(--d360-shadow-card);
}

.d360-hero__bars { width: 100%; display: grid; gap: var(--d360-sp-3); }

/* -- Sections ------------------------------------------------------------ */

.d360-section { padding-block: var(--d360-sp-16); border-top: 1px solid var(--d360-hairline); }

.d360-section__head { max-width: var(--d360-measure); margin-bottom: var(--d360-sp-8); }
.d360-section__head p { margin-bottom: 0; color: var(--d360-ink-2); }

.d360-eyebrow {
	display: block;
	margin-bottom: var(--d360-sp-2);
	font-family: var(--d360-font-mono);
	font-size: var(--d360-fs-100);
	letter-spacing: 0.1em;
	text-transform: uppercase;
	color: var(--d360-ink-3);
}

.d360-grid { display: grid; gap: var(--d360-sp-4); }
.d360-grid--3 { grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }
.d360-grid--2 { grid-template-columns: repeat(auto-fit, minmax(19rem, 1fr)); }

/* -- Topic cards --------------------------------------------------------- */

.d360-topic {
	display: flex;
	flex-direction: column;
	gap: var(--d360-sp-2);
	padding: var(--d360-sp-4);
	border: 1px solid var(--d360-hairline);
	border-left: 3px solid var(--d360-topic, var(--d360-ink-3));
	border-radius: var(--d360-radius-card);
	background: var(--d360-surface);
	color: inherit;
	text-decoration: none;
	transition: transform var(--d360-dur) var(--d360-ease), box-shadow var(--d360-dur) var(--d360-ease);
}

.d360-topic:hover { transform: translateY(-2px); box-shadow: var(--d360-shadow-lift); color: inherit; }
.d360-topic__name { font-weight: 620; font-size: var(--d360-fs-400); }
.d360-topic__meta { font-family: var(--d360-font-mono); font-size: var(--d360-fs-100); color: var(--d360-ink-3); }

/* -- Problem cards ------------------------------------------------------- */

.d360-problem {
	display: block;
	padding: var(--d360-sp-4);
	border: 1px solid var(--d360-hairline);
	border-radius: var(--d360-radius-card);
	background: var(--d360-surface);
	color: inherit;
	font-weight: 560;
	text-decoration: none;
	transition: border-color var(--d360-dur) var(--d360-ease), transform var(--d360-dur) var(--d360-ease);
}

.d360-problem:hover { border-color: var(--d360-action); transform: translateY(-2px); color: inherit; }
.d360-problem span { display: block; margin-top: var(--d360-sp-1); font-weight: 400; font-size: var(--d360-fs-200); color: var(--d360-ink-3); }

/* -- Email capture ------------------------------------------------------- */

.d360-signup {
	padding: var(--d360-sp-12) var(--d360-sp-6);
	border-radius: var(--d360-radius-card);
	background: var(--d360-ink);
	color: #fff;
	text-align: center;
}

.d360-signup h2 { margin-bottom: var(--d360-sp-3); color: #fff; }
.d360-signup p { max-width: 34rem; margin-inline: auto; color: rgb(255 255 255 / 72%); }

.d360-signup__form {
	display: flex;
	flex-wrap: wrap;
	gap: var(--d360-sp-2);
	justify-content: center;
	max-width: 30rem;
	margin: var(--d360-sp-6) auto 0;
}

.d360-signup__form input[type="email"] {
	flex: 1 1 16rem;
	min-height: 3.25rem;
	padding: 0 var(--d360-sp-4);
	border: 1px solid rgb(255 255 255 / 22%);
	border-radius: var(--d360-radius-control);
	background: rgb(255 255 255 / 8%);
	color: #fff;
	font: inherit;
}

.d360-signup__form input::placeholder { color: rgb(255 255 255 / 50%); }
.d360-signup__form input:focus-visible { outline: 2px solid var(--d360-azure); outline-offset: 2px; }

.d360-signup__trap { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
.d360-signup__status { margin-top: var(--d360-sp-4); font-size: var(--d360-fs-200); min-height: 1.5rem; }
.d360-signup__status--ok { color: #8fe3a0; }
.d360-signup__status--error { color: #ffb4ad; }

/* -- Inline challenge ---------------------------------------------------- */

.d360-challenge {
	padding: var(--d360-sp-8);
	border: 1px solid var(--d360-hairline);
	border-radius: var(--d360-radius-card);
	background: var(--d360-surface);
	box-shadow: var(--d360-shadow-card);
}

.d360-challenge__prompt {
	margin: 0 0 var(--d360-sp-6);
	font-size: var(--d360-fs-500);
	font-weight: 620;
	line-height: 1.3;
	text-wrap: balance;
}

.d360-challenge__share {
	margin-top: var(--d360-sp-4);
	font-family: var(--d360-font-mono);
	font-size: var(--d360-fs-100);
	color: var(--d360-ink-3);
}