:root {
	--card-bg: #172033;
	--text-primary: #f8fafc;
	--text-secondary: #cbd5e1;
	--accent: #38bdf8;
}

html {
	scroll-behavior: smooth;
}

section[id],
header[id],
footer[id] {
	scroll-margin-top: 80px;
}

/* Enhanced Modal Styling for PDFs */
.modal-content {
	background: var(--card-bg);
	margin: 3% auto;
	padding: 2.5rem;
	border-radius: 12px;
	max-width: 900px;
	width: 90%;
	color: var(--text-primary);
	position: relative;
	max-height: 90vh;
	overflow-y: auto;
}

.modal-header-actions {
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 1rem;
	margin-top: 1rem;
	flex-wrap: wrap;
}

.subtitle {
	color: var(--text-secondary);
	font-size: 0.95rem;
}

.modal-divider {
	border: 0;
	height: 1px;
	background: rgba(255, 255, 255, 0.1);
	margin: 1.5rem 0;
}

.pdf-viewer-container {
	width: 100%;
	border-radius: 8px;
	overflow: hidden;
	background: #0f172a;
	border: 1px solid rgba(255, 255, 255, 0.05);
}

.pdf-fallback {
	padding: 3rem;
	text-align: center;
	color: var(--text-secondary);
}

/* Interactive Case Study Cards */
.portfolio-grid {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
	gap: 2.5rem;
	perspective: 1000px;
}

.card {
	background: var(--card-bg);
	border-radius: 14px;
	padding: 2.2rem;
	display: flex;
	flex-direction: column;
	justify-content: space-between;
	border: 1px solid rgba(255, 255, 255, 0.08);
	position: relative;
	overflow: hidden;
	z-index: 1;
	transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1),
				border-color 0.4s ease,
				box-shadow 0.4s ease;
	will-change: transform, box-shadow;
}

.card::before {
	content: '';
	position: absolute;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background: radial-gradient(
		500px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
		rgba(56, 189, 248, 0.15),
		transparent 60%
	);
	z-index: -1;
	opacity: 0;
	transition: opacity 0.3s ease;
	pointer-events: none;
}

.card:hover {
	transform: translateY(-8px) scale(1.015);
	border-color: rgba(56, 189, 248, 0.4);
	box-shadow: 0 20px 40px -15px rgba(0, 0, 0, 0.5),
				0 0 20px 0 rgba(56, 189, 248, 0.15);
}

.card:hover::before {
	opacity: 1;
}

.category {
	font-size: 0.75rem;
	color: var(--accent);
	text-transform: uppercase;
	font-weight: 700;
	letter-spacing: 1px;
}

.card h3 {
	font-size: 1.45rem;
	margin: 0.6rem 0 1rem;
	color: var(--text-primary);
	transition: color 0.3s ease;
}

.card:hover h3 {
	color: var(--accent);
}

.card-body p {
	color: var(--text-secondary);
	font-size: 0.95rem;
	margin-bottom: 1.8rem;
	line-height: 1.6;
}

.tags {
	display: flex;
	gap: 0.6rem;
	flex-wrap: wrap;
	margin-bottom: 1.5rem;
}

.tags span {
	background: rgba(255, 255, 255, 0.04);
	border: 1px solid rgba(255, 255, 255, 0.08);
	padding: 0.3rem 0.75rem;
	border-radius: 20px;
	font-size: 0.78rem;
	color: var(--text-secondary);
	transition: all 0.3s ease;
}

.card:hover .tags span {
	background: rgba(56, 189, 248, 0.1);
	color: var(--text-primary);
	border-color: rgba(56, 189, 248, 0.2);
}

.link-btn {
	color: var(--accent);
	text-decoration: none;
	font-weight: 600;
	display: inline-flex;
	align-items: center;
	gap: 0.4rem;
	transition: gap 0.3s ease, color 0.3s ease;
}

.card:hover .link-btn {
	gap: 0.8rem;
	color: #38bdf8;
}

/* Hero artwork and page motion */
.hero-copy,
.profile-card,
.section,
.cta {
	animation: reveal-up 0.8s ease both;
}

.profile-card {
	overflow: hidden;
}

.profile-art {
	position: absolute;
	inset: 0;
	height: 220px;
	background:
		radial-gradient(circle at 50% 45%, rgba(124, 156, 255, 0.26), transparent 28%),
		linear-gradient(135deg, rgba(124, 156, 255, 0.12), rgba(17, 27, 45, 0.1));
	border-bottom: 1px solid rgba(148, 163, 184, 0.16);
	overflow: hidden;
}

.profile-art::before,
.profile-art::after {
	content: '';
	position: absolute;
	width: 260px;
	height: 1px;
	background: linear-gradient(90deg, transparent, rgba(125, 211, 252, 0.65), transparent);
	left: 50%;
	top: 50%;
	transform: translate(-50%, -50%) rotate(32deg);
	animation: art-scan 5s ease-in-out infinite;
}

.profile-art::after {
	transform: translate(-50%, -50%) rotate(-32deg);
	animation-delay: -2.5s;
}

.art-orbit {
	position: absolute;
	left: 50%;
	top: 50%;
	border: 1px solid rgba(125, 211, 252, 0.45);
	border-radius: 50%;
	transform: translate(-50%, -50%);
}

.art-orbit-one {
	width: 150px;
	height: 150px;
	animation: orbit-spin 14s linear infinite;
}

.art-orbit-two {
	width: 210px;
	height: 74px;
	border-color: rgba(196, 181, 253, 0.5);
	transform: translate(-50%, -50%) rotate(42deg);
	animation: orbit-spin-reverse 11s linear infinite;
}

.art-core {
	position: absolute;
	left: 50%;
	top: 50%;
	width: 66px;
	height: 66px;
	display: grid;
	place-items: center;
	transform: translate(-50%, -50%);
	border: 1px solid rgba(255, 255, 255, 0.65);
	border-radius: 50%;
	background: #111b2d;
	box-shadow: 0 0 0 8px rgba(124, 156, 255, 0.08), 0 0 28px rgba(125, 211, 252, 0.4);
	color: white;
	font-size: 0.78rem;
	font-weight: 700;
	letter-spacing: 0.12em;
}

.art-label {
	position: absolute;
	color: rgba(226, 232, 240, 0.72);
	font-size: 0.58rem;
	font-weight: 700;
	letter-spacing: 0.16em;
}

.art-label-top { top: 24px; left: 50%; transform: translateX(-50%); }
.art-label-right { right: 22px; top: 50%; transform: translateY(-50%); }
.art-label-bottom { bottom: 20px; left: 50%; transform: translateX(-50%); }

.profile-card > .avatar {
	position: relative;
	margin-top: 174px;
}

.project,
.service-card,
.result-card,
.testimonial,
.cert-card,
.about-panel {
	transition: transform 0.35s ease, border-color 0.35s ease, box-shadow 0.35s ease;
}

.project:hover,
.service-card:hover,
.result-card:hover,
.testimonial:hover,
.cert-card:hover,
.about-panel:hover {
	transform: translateY(-6px);
	border-color: rgba(124, 156, 255, 0.48);
	box-shadow: 0 18px 36px rgba(3, 7, 18, 0.28);
}

@keyframes reveal-up {
	from { opacity: 0; transform: translateY(18px); }
	to { opacity: 1; transform: translateY(0); }
}

@keyframes orbit-spin {
	from { transform: translate(-50%, -50%) rotate(0deg); }
	to { transform: translate(-50%, -50%) rotate(360deg); }
}

@keyframes orbit-spin-reverse {
	from { transform: translate(-50%, -50%) rotate(42deg); }
	to { transform: translate(-50%, -50%) rotate(-318deg); }
}

@keyframes art-scan {
	0%, 100% { opacity: 0.2; }
	50% { opacity: 0.9; }
}

@media (prefers-reduced-motion: reduce) {
	*,
	*::before,
	*::after {
		animation-duration: 0.01ms !important;
		animation-iteration-count: 1 !important;
		scroll-behavior: auto !important;
		transition-duration: 0.01ms !important;
	}
}