/* Base styles for the portfolio site. Implemented in a later step. */

:root {
	--bg: #f5f7fa;
	--card: #ffffff;
	--text: #0b0f19;
	--muted: #6b7280;
	--accent: #2563eb;
	--accent-2: #059669;
	--border: #e5e7eb;
	--shadow: rgba(0, 0, 0, 0.05);
	--grid: #d1d5db;
}

/* Resets */
* {
	box-sizing: border-box;
	margin: 0;
	padding: 0;
}

html, body {
	height: 100%;
}

body {
	font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto,
		Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji";
	background-color: var(--bg);
	background-image:
		linear-gradient(to right, var(--grid) 1px, transparent 1px),
		linear-gradient(to bottom, var(--grid) 1px, transparent 1px);
	background-size: 24px 24px;
	color: var(--text);
	line-height: 1.6;
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
}

img {
	max-width: 100%;
	display: block;
}

.container {
	max-width: 1100px;
	margin: 0 auto;
	padding: 0 20px;
}

/* Header & Nav */
header {
	position: sticky;
	top: 0;
	z-index: 50;
	background: rgba(255, 255, 255, 0.8);
	backdrop-filter: blur(10px);
	border-bottom: 1px solid var(--border);
}

.nav-inner {
	display: flex;
	align-items: center;
	justify-content: flex-start;
	gap: 12px;
	height: 64px;
}

.brand {
	font-weight: 700;
	font-size: 1.25rem;
	color: var(--text);
	text-decoration: none;
	margin-right: 28px;
}

.nav-toggle {
	display: none;
	background: none;
	border: 1px solid var(--border);
	color: var(--text);
	padding: 6px 10px;
	border-radius: 8px;
}

.nav-menu {
	list-style: none;
	display: flex;
	gap: 12px;
	margin-top: 3px;
}

.nav-menu a {
	color: #374151;
	text-decoration: none;
	opacity: 0.95;
	transition: color 180ms ease, opacity 180ms ease;
}

.nav-menu a:hover {
	opacity: 1;
	color: #000000;
}

/* Hero */
.hero {
	padding: 80px 0 48px;
	background: radial-gradient(1200px 500px at 20% -10%, rgba(37,99,235,0.06), transparent 60%),
		radial-gradient(800px 400px at 80% -10%, rgba(5,150,105,0.06), transparent 60%);
	border-bottom: 1px solid var(--border);
	box-shadow: 0 8px 30px var(--shadow);
}

.hero h1 {
	font-size: clamp(1.8rem, 2.5vw + 1rem, 3rem);
	line-height: 1.2;
	margin-bottom: 10px;
}

.hero p {
	color: var(--muted);
	margin-bottom: 20px;
}

.btn {
	display: inline-block;
	padding: 10px 16px;
	border-radius: 10px;
	text-decoration: none;
	border: 1px solid var(--border);
	position: relative;
	overflow: hidden;
}

.btn.primary {
	background: linear-gradient(90deg, var(--accent), var(--accent-2));
	color: #ffffff;
	font-weight: 600;
}

/* See all projects button - match card hover scheme */
.see-all {
	background: #ffffff;
	color: var(--text);
}

.see-all::before {
	content: "";
	position: absolute;
	top: 0;
	left: -200%;
	width: 140%;
	height: 100%;
	background: #374151; /* grey slash to match cards */
	transform: skewX(-20deg);
	opacity: 0; /* hidden before hover */
	transition: left 420ms ease, opacity 420ms ease, background-color 420ms ease;
	z-index: 0;
}

.see-all:hover::before {
	left: -10%;
	opacity: 1;
}

.see-all span {
	position: relative;
	z-index: 1;
	transition: color 360ms ease;
}

.see-all:hover span {
	color: #ffffff;
}

/* Sections */
.section {
	padding: 48px 0;
	border-bottom: 1px solid var(--border);
}

.section h2 {
	font-size: 1.5rem;
	margin-bottom: 16px;
}

/* Grid & Cards */
.grid {
	display: grid;
	gap: 18px;
}

.projects-grid {
	grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.card {
	background: var(--card);
	border: 1px solid var(--border);
	border-radius: 14px;
	padding: 18px;
	box-shadow: 0 8px 30px var(--shadow);
	transition: transform 200ms ease, box-shadow 200ms ease, color 200ms ease, background-color 200ms ease;
	position: relative;
	overflow: hidden;
	display: block;
	text-decoration: none;
}

/* Hover/slash only for anchor cards (listing pages) */
a.card::before {
	content: "";
	position: absolute;
	top: 0;
	left: -200%;
	width: 140%;
	height: 100%;
	background: #374151; /* grey slash */
	transform: skewX(-20deg);
	opacity: 0; /* hidden before hover */
	transition: left 420ms ease, opacity 420ms ease, background-color 420ms ease;
	z-index: 0;
}

a.card:hover::before {
	left: -10%;
	opacity: 1;
}

a.card:hover {
	box-shadow: 0 12px 34px var(--shadow);
	color: #ffffff;
	background-color: #f0f2f6; /* slight light-to-dark base shift under slash */
}

.card > * {
	position: relative;
	z-index: 1;
	transition: color 200ms ease;
}

a.card:hover h3,
a.card:hover p,
a.card:hover a {
	color: #ffffff;
}

.card h3 {
	margin-bottom: 8px;
}

.card:link, .card:visited { color: inherit; text-decoration: none; }

/* Expandable details cards (project detail pages) */
details.card {
	cursor: pointer;
}

details.card summary {
	list-style: none;
	outline: none;
	display: flex;
	align-items: center;
	gap: 10px;
}

details.card summary::-webkit-details-marker { display: none; }

details.card summary::after {
	content: "▸";
	font-size: 1.2rem;
	font-weight: 700;
	color: #111827;
	margin-left: auto;
	transition: transform 200ms ease, color 200ms ease;
}

details.card[open] summary::after {
	transform: rotate(90deg);
}

details.card .content {
	margin-top: 12px;
	border-top: 1px solid var(--border);
	padding-top: 12px;
}

/* Tags inside cards */
.tags {
	margin-top: 10px;
	list-style: none;
	display: flex;
	flex-wrap: wrap;
	gap: 8px;
}

.tags li {
	background: rgba(37,99,235,0.08);
	border: 1px solid var(--border);
	padding: 4px 8px;
	border-radius: 999px;
	font-size: 0.85rem;
	color: var(--text);
	transition: background-color 200ms ease, border-color 200ms ease, color 200ms ease;
}

/* Hover effect for anchor cards only */
a.card:hover .tags li {
	background: rgba(255,255,255,0.18);
	border-color: rgba(255,255,255,0.25);
	color: #ffffff;
}

/* Skills */
.skills {
	list-style: none;
	display: grid;
	gap: 10px;
	grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

/* Contact */
.contact {
	list-style: none;
	display: flex;
	gap: 14px;
	flex-wrap: wrap;
}

.contact a { color: var(--accent); }

/* Responsive */
@media (max-width: 720px) {
	.nav-toggle { display: inline-block; }
	.nav-menu { display: none; position: absolute; right: 20px; top: 64px; background: var(--card); padding: 12px; border: 1px solid var(--border); border-radius: 12px; }
	.nav-menu.open { display: block; }
} 

.dw-list {
	display: grid;
	grid-template-columns: 180px 1fr;
	column-gap: 24px;
	row-gap: 10px;
	margin: 12px 0 0 0;
  }
  
  .dw-list dt,
  .dw-list dd {
	margin: 0;
  }
  
  .dw-list dt {
	font-weight: 500;
  }
  
  .dw-list dd {
	padding-left: 4px;
  }
  
  /* Header row */
  .dw-list dt:first-child,
  .dw-list dd:nth-child(2) {
	font-weight: 600;
	padding-bottom: 6px;
	border-bottom: 1px solid var(--border);
  }
  
  .glass-card {
	background: white;
	padding: 5px 10px;
	border-radius: 8px;
	border: 1px solid rgba(0,0,0,0.08);
	box-shadow: 0 4px 10px rgba(0,0,0,0.06);
  }
  
  .glass-card:hover {
	background: whitesmoke;
  }
  .tech-badge {
	background: whitesmoke;
	color: whitesmoke;
	padding: 3px 10px;
	border-radius: 999px;
	font-size: 0.8em;
	font-weight: 600;
	letter-spacing: 0.3px;
  }
  
  .hover-card {
	background: #f2f2f2;
	padding: 4px 9px;
	border-radius: 6px;
	transition: 0.2s ease;
  }
  
  .hover-card:hover {
	background: #e6f0ff;
	box-shadow: 0 3px 8px rgba(0,0,0,0.15);
  }