/* ==========================================================================
   AeroCore AI4V child theme — landing page & team styles.
   Uses AeroCore CSS variables so cards/text follow the theme (incl. dark mode).
   ========================================================================== */

:root {
	--ai4v-accent:    #22d3ee;
	--ai4v-accent-2:  #34d399;
	--ai4v-accent-ink:#0e7490;
	--ai4v-ink:       #0b1220;
	--ai4v-ink-2:     #101c33;
	--ai4v-muted-dark:#9fb0c9;
	--ai4v-shadow:    0 10px 30px rgba(11, 18, 32, .08);
	--ai4v-shadow-lg: 0 20px 50px rgba(11, 18, 32, .14);
}

.ai4v-container {
	width: min(1140px, 92vw);
	margin: 0 auto;
}

section[id] { scroll-margin-top: 90px; }

/* ------------------------------------------------------------------ hero */

.ai4v-hero {
	position: relative;
	overflow: hidden;
	color: #eaf2ff;
	background: radial-gradient(1200px 600px at 78% -10%, #1c3d5a 0%, var(--ai4v-ink-2) 45%, var(--ai4v-ink) 100%);
}
.ai4v-hero-bg { position: absolute; inset: 0; pointer-events: none; }
.ai4v-hero-bg::before {
	content: "";
	position: absolute; inset: 0;
	background-image:
		linear-gradient(rgba(148, 178, 220, .07) 1px, transparent 1px),
		linear-gradient(90deg, rgba(148, 178, 220, .07) 1px, transparent 1px);
	background-size: 56px 56px;
	mask-image: radial-gradient(ellipse 90% 70% at 50% 30%, #000 30%, transparent 75%);
}
.ai4v-hero-bg::after {
	content: "";
	position: absolute;
	width: 520px; height: 520px;
	right: -140px; top: -120px;
	border-radius: 50%;
	background: radial-gradient(circle, rgba(34, 211, 238, .20), transparent 65%);
	filter: blur(10px);
}

.ai4v-hero-inner { position: relative; padding: 120px 0 88px; }

.ai4v-hero-badge {
	display: inline-block;
	padding: 7px 16px;
	border-radius: 999px;
	border: 1px solid rgba(34, 211, 238, .4);
	background: rgba(34, 211, 238, .08);
	color: var(--ai4v-accent);
	font-size: 13.5px;
	font-weight: 600;
	letter-spacing: .6px;
	text-transform: uppercase;
}

.ai4v-hero h1 {
	margin: 22px 0 18px;
	font-size: clamp(36px, 6vw, 62px);
	line-height: 1.08;
	font-weight: 800;
	letter-spacing: -.5px;
	color: #fff;
}
.ai4v-grad {
	background: linear-gradient(92deg, var(--ai4v-accent) 10%, var(--ai4v-accent-2) 90%);
	-webkit-background-clip: text;
	background-clip: text;
	color: transparent;
}

.ai4v-hero-sub {
	max-width: 680px;
	margin: 0 0 34px;
	font-size: clamp(16px, 2vw, 19px);
	color: var(--ai4v-muted-dark);
}

.ai4v-hero-cta { display: flex; flex-wrap: wrap; gap: 14px; }

.ai4v-btn {
	display: inline-block;
	padding: 13px 28px;
	border-radius: 999px;
	font-weight: 600;
	font-size: 15px;
	text-decoration: none;
	transition: transform .18s ease, box-shadow .18s ease, background .18s ease;
}
.ai4v-btn:active { transform: translateY(1px); }
.ai4v-btn-primary {
	color: var(--ai4v-ink);
	background: linear-gradient(135deg, var(--ai4v-accent), var(--ai4v-accent-2));
	box-shadow: 0 8px 24px rgba(34, 211, 238, .30);
}
.ai4v-btn-primary:hover { box-shadow: 0 12px 32px rgba(34, 211, 238, .45); transform: translateY(-2px); }
.ai4v-btn-ghost { color: #eaf2ff; border: 1px solid rgba(219, 229, 243, .35); }
.ai4v-btn-ghost:hover { background: rgba(255, 255, 255, .08); transform: translateY(-2px); }

.ai4v-hero-stats {
	display: flex;
	flex-wrap: wrap;
	gap: clamp(24px, 5vw, 64px);
	margin-top: 60px;
	padding-top: 32px;
	border-top: 1px solid rgba(148, 178, 220, .18);
}
.ai4v-stat strong {
	display: block;
	font-size: clamp(26px, 3.4vw, 38px);
	font-weight: 800;
	color: #fff;
}
.ai4v-stat span { color: var(--ai4v-muted-dark); font-size: 14px; }

/* -------------------------------------------------------------- sections */

.ai4v-section { padding: 88px 0; }
.ai4v-section-alt { background: var(--bg-secondary, rgba(128, 140, 160, .06)); }
.ai4v-section-dark {
	background: linear-gradient(180deg, var(--ai4v-ink) 0%, var(--ai4v-ink-2) 100%);
	color: #dbe5f3;
}

.ai4v-section-head { max-width: 720px; margin-bottom: 50px; }
.ai4v-section-head h2 {
	margin: 10px 0 12px;
	font-size: clamp(27px, 4vw, 38px);
	font-weight: 800;
	letter-spacing: -.4px;
	line-height: 1.15;
	color: var(--text-primary);
}
.ai4v-section-dark .ai4v-section-head h2 { color: #fff; }
.ai4v-section-head p { margin: 0; color: var(--text-muted); font-size: 16.5px; }
.ai4v-section-dark .ai4v-section-head p { color: var(--ai4v-muted-dark); }

.ai4v-kicker {
	display: inline-block;
	font-size: 13px;
	font-weight: 700;
	letter-spacing: 1.6px;
	text-transform: uppercase;
	color: var(--ai4v-accent-ink);
}
.ai4v-section-dark .ai4v-kicker { color: var(--ai4v-accent); }

/* ----------------------------------------------------------------- about */

.ai4v-about-grid {
	display: grid;
	grid-template-columns: 1.05fr .95fr;
	gap: 52px;
	align-items: start;
}
.ai4v-about-text p { font-size: 17px; margin: 0 0 18px; color: var(--text-secondary); }
.ai4v-about-text strong { color: var(--text-primary); }

.ai4v-pillars { display: grid; gap: 18px; }
.ai4v-pillar {
	background: var(--bg-card);
	border: 1px solid var(--border-primary);
	border-radius: var(--border-radius);
	padding: 24px 26px;
	box-shadow: var(--ai4v-shadow);
	transition: transform .2s ease, box-shadow .2s ease;
}
.ai4v-pillar:hover { transform: translateY(-4px); box-shadow: var(--ai4v-shadow-lg); }
.ai4v-pillar h3 { margin: 0 0 8px; font-size: 18px; color: var(--text-primary); }
.ai4v-pillar p { margin: 0; color: var(--text-muted); font-size: 15px; }

/* ---------------------------------------------------------- achievements */

.ai4v-ach-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
	gap: 20px;
}
.ai4v-ach-card {
	background: rgba(255, 255, 255, .045);
	border: 1px solid rgba(148, 178, 220, .16);
	border-radius: var(--border-radius);
	padding: 26px 26px 24px;
	transition: transform .2s ease, border-color .2s ease, background .2s ease;
}
.ai4v-ach-card:hover {
	transform: translateY(-4px);
	border-color: rgba(34, 211, 238, .45);
	background: rgba(34, 211, 238, .06);
}
.ai4v-ach-rank {
	display: inline-block;
	padding: 5px 12px;
	border-radius: 999px;
	font-size: 12.5px;
	font-weight: 700;
	letter-spacing: .4px;
	color: var(--ai4v-ink);
	background: linear-gradient(135deg, var(--ai4v-accent), var(--ai4v-accent-2));
	margin-bottom: 14px;
}
.ai4v-ach-ongoing .ai4v-ach-rank {
	color: var(--ai4v-accent);
	background: rgba(34, 211, 238, .12);
	border: 1px solid rgba(34, 211, 238, .4);
}
.ai4v-ach-card h3 { margin: 0 0 10px; font-size: 17.5px; line-height: 1.4; color: #fff; }
.ai4v-ach-card p { margin: 0; font-size: 14.5px; color: var(--ai4v-muted-dark); }

/* -------------------------------------------------------------- projects */

.ai4v-proj-group { margin-bottom: 54px; }
.ai4v-proj-group:last-child { margin-bottom: 0; }
.ai4v-proj-group-title {
	font-size: 15px;
	font-weight: 700;
	letter-spacing: 1.2px;
	text-transform: uppercase;
	color: var(--ai4v-accent-ink);
	margin: 0 0 20px;
	padding-bottom: 12px;
	border-bottom: 2px solid var(--border-primary);
}

.ai4v-proj-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
	gap: 20px;
}
.ai4v-proj-card {
	background: var(--bg-card);
	border: 1px solid var(--border-primary);
	border-radius: var(--border-radius);
	padding: 28px;
	box-shadow: var(--ai4v-shadow);
	transition: transform .2s ease, box-shadow .2s ease;
}
.ai4v-proj-card:hover { transform: translateY(-4px); box-shadow: var(--ai4v-shadow-lg); }
.ai4v-proj-head { display: flex; align-items: center; gap: 12px; }
.ai4v-proj-head h4 { margin: 0; font-size: 21px; color: var(--text-primary); }
.ai4v-proj-flag {
	padding: 3px 10px;
	border-radius: 999px;
	font-size: 11.5px;
	font-weight: 700;
	letter-spacing: .5px;
	text-transform: uppercase;
	color: var(--ai4v-accent-ink);
	background: rgba(34, 211, 238, .14);
}
.ai4v-proj-sub { margin: 6px 0 12px; font-size: 14px; font-weight: 600; color: var(--ai4v-accent-ink); }
.ai4v-proj-card > p:not(.ai4v-proj-sub) { margin: 0 0 16px; font-size: 15px; color: var(--text-muted); }

.ai4v-tags { display: flex; flex-wrap: wrap; gap: 8px; }
.ai4v-tags span {
	padding: 4px 11px;
	border-radius: 999px;
	font-size: 12.5px;
	color: var(--text-secondary);
	background: var(--bg-secondary, rgba(128, 140, 160, .08));
	border: 1px solid var(--border-primary);
}

/* ------------------------------------------------------------------ team */

.ai4v-team-group { margin-bottom: 54px; }
.ai4v-team-group:last-child { margin-bottom: 0; }
.ai4v-team-group-head { margin-bottom: 22px; }
.ai4v-team-group-head h3 { margin: 0 0 4px; font-size: 22px; color: var(--text-primary); }
.ai4v-team-group-head p { margin: 0; color: var(--text-muted); font-size: 14.5px; }

.ai4v-member-grid {
	display: grid;
	grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
	gap: 18px;
}
.ai4v-member-card {
	display: flex;
	flex-direction: column;
	align-items: flex-start;
	gap: 4px;
	background: var(--bg-card);
	border: 1px solid var(--border-primary);
	border-radius: var(--border-radius);
	padding: 24px 22px;
	text-decoration: none;
	box-shadow: var(--ai4v-shadow);
	transition: transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.ai4v-member-card:hover {
	transform: translateY(-4px);
	box-shadow: var(--ai4v-shadow-lg);
	border-color: rgba(34, 211, 238, .5);
}

.ai4v-monogram {
	display: inline-grid;
	place-items: center;
	width: 56px; height: 56px;
	border-radius: 16px;
	font-weight: 800;
	font-size: 20px;
	letter-spacing: .5px;
	color: #fff;
	background: linear-gradient(135deg,
		hsl(var(--h, 200), 72%, 55%),
		hsl(calc(var(--h, 200) + 42), 70%, 42%));
	margin-bottom: 12px;
}
.ai4v-monogram-xl {
	width: 108px; height: 108px;
	border-radius: 28px;
	font-size: 40px;
	margin-bottom: 0;
	box-shadow: 0 14px 34px rgba(0, 0, 0, .22);
}

.ai4v-member-name { font-size: 17px; font-weight: 700; color: var(--text-primary); }
.ai4v-member-role { font-size: 13.5px; font-weight: 600; color: var(--ai4v-accent-ink); }
.ai4v-member-aff { font-size: 13px; color: var(--text-muted); line-height: 1.45; }

/* ------------------------------------------------------- member profile */

.ai4v-member-hero {
	display: flex;
	align-items: center;
	gap: 36px;
	padding: 34px 0 8px;
}
.ai4v-member-photo img { width: 108px; height: 108px; object-fit: cover; border-radius: 28px; }
.ai4v-member-hero-text h1 {
	margin: 0 0 6px;
	font-size: clamp(28px, 4.4vw, 40px);
	font-weight: 800;
	letter-spacing: -.4px;
	color: var(--text-primary);
}
.ai4v-member-hero-role { margin: 0 0 16px; font-size: 18px; color: var(--ai4v-accent-ink); font-weight: 600; }

.ai4v-member-chips {
	display: flex;
	flex-wrap: wrap;
	gap: 10px;
	margin-bottom: 22px;
}
.ai4v-chip {
	padding: 6px 14px;
	border-radius: 999px;
	font-size: 13px;
	color: var(--text-secondary);
	background: var(--bg-secondary, rgba(128, 140, 160, .08));
	border: 1px solid var(--border-primary);
}
.ai4v-chip-accent {
	color: var(--ai4v-accent-ink);
	border-color: rgba(34, 211, 238, .45);
	background: rgba(34, 211, 238, .08);
}

.ai4v-member-article { margin-top: 22px; }
.ai4v-member-bio { font-size: 16.5px; }
.ai4v-member-more { margin-top: 26px; font-weight: 600; }

/* ------------------------------------------------------------- page head */

.ai4v-page-head { padding: 30px 0 34px; }
.ai4v-page-head h1 {
	margin: 0 0 10px;
	font-size: clamp(28px, 4.4vw, 40px);
	font-weight: 800;
	letter-spacing: -.4px;
	color: var(--text-primary);
}
.ai4v-page-head p { margin: 0; color: var(--text-muted); font-size: 16.5px; max-width: 640px; }

/* --------------------------------------------------------------- contact */

.ai4v-contact {
	background: radial-gradient(900px 420px at 50% 0%, #16324a 0%, var(--ai4v-ink) 70%);
	color: #eaf2ff;
	text-align: center;
}
.ai4v-contact-inner h2 {
	margin: 0 0 12px;
	font-size: clamp(26px, 3.6vw, 34px);
	font-weight: 800;
	color: #fff;
}
.ai4v-contact-inner p { margin: 0 0 26px; color: var(--ai4v-muted-dark); }

/* ------------------------------------------------------------- animation */

.ai4v-reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.ai4v-reveal.ai4v-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
	.ai4v-reveal { opacity: 1; transform: none; transition: none; }
}

/* ------------------------------------------------------------- responsive */

@media (max-width: 900px) {
	.ai4v-about-grid { grid-template-columns: 1fr; gap: 36px; }
	.ai4v-member-hero { flex-direction: column; align-items: flex-start; gap: 22px; }
}

@media (max-width: 720px) {
	.ai4v-section { padding: 60px 0; }
	.ai4v-hero-inner { padding: 88px 0 64px; }
}