/* FONT DEFINITIONS */
@font-face {
  font-family: 'Inter';
  font-style:  normal;
  font-weight: 100 900;
  font-display: swap;
  src: url("fonts/InterVariable.woff2") format("woff2");
}

@font-face {
  font-family: 'Inter';
  font-style:  italic;
  font-weight: 100 900;
  font-display: swap;
  src: url("fonts/InterVariable-Italic.woff2") format("woff2");
}

:root {
	--color-background: #0D1117;
	--color-surface: #161B22;
	--color-button-bg: #21262d;
	--color-primary: #238636;
	--color-primary-hover: #2ea043;
	--color-accent: #58A6FF;
	--color-text: #C9D1D9;
	--color-text-heading: #FFFFFF;
	--color-border: #30363D;
	--font-body: 'Inter', sans-serif;
	--font-heading: 'Inter', sans-serif;
	--border-radius: 8px;
	--shadow-color: rgba(0, 0, 0, 0.2);
}

/* LIGHT THEME DEFINITION */
@media (prefers-color-scheme: light) {
	:root {
		--color-background: #FFFFFF;
		--color-surface: #F6F8FA;
		--color-button-bg: #F6F8FA;
		--color-primary: #238636;
		--color-primary-hover: #2ea043;
		--color-accent: #0969DA;
		--color-text: #24292F;
		--color-text-heading: #24292F;
		--color-border: #D0D7DE;
		--shadow-color: rgba(0, 0, 0, 0.1);
	}

	header {
		background-image: radial-gradient(circle at 1px 1px, rgba(0,0,0,0.05) 1px, transparent 0);
	}
}

body, html {
	margin: 0;
	padding: 0;
	font-family: var(--font-body);
	background-color: var(--color-background);
	color: var(--color-text);
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	scroll-behavior: smooth;
	transition: background-color 0.3s ease, color 0.3s ease;
}

::selection {
	background-color: var(--color-accent);
	color: var(--color-background);
}

/* CAPÇALERA */
header {
	padding: 6rem 2rem;
	text-align: center;
	background-color: var(--color-surface);
	border-bottom: 1px solid var(--color-border);
	background-image: radial-gradient(circle at 1px 1px, rgba(255,255,255,0.05) 1px, transparent 0);
	background-size: 20px 20px;
	transition: background-color 0.3s ease, border-color 0.3s ease;
}

header h1 {
	font-family: var(--font-heading);
	font-weight: 900;
	font-size: 3.5rem;
	margin-top: auto;
	margin-bottom: 0.5rem;
	color: var(--color-text-heading);
	animation: fadeInDown 1s ease-out;
}

header p {
	font-size: 1.25rem;
	color: var(--color-text);
	max-width: 600px;
	margin: 0 auto;
	animation: fadeInDown 1.2s ease-out;
}

/* SECCIÓ PRINCIPAL DE PROJECTES */
main {
	padding: 5rem;
	padding-top: 0;
	background-color: var(--color-background);
}

main h2 {
	font-family: var(--font-heading);
	font-size: 2.8rem;
	text-align: center;
	margin-bottom: 4rem;
	margin-top: 6rem;
	color: var(--color-text-heading);
}

.projects {
	display: grid;
	grid-template-columns: repeat(auto-fit, minmax(330px, 1fr));
	gap: 2.5rem;
	max-width: 1200px;
	margin: 0 auto;
}

.project {
	background-color: var(--color-surface);
	padding: 2.5rem;
	border-radius: var(--border-radius);
	border: 1px solid var(--color-border);
	box-shadow: 0 8px 30px var(--shadow-color);
	display: flex;
	flex-direction: column;
	transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
}

.project:hover {
	transform: translateY(-10px);
	border-color: var(--color-accent);
	box-shadow: 0 12px 40px var(--shadow-color);
}

.project h3 {
	font-family: var(--font-heading);
	font-size: 1.6rem;
	margin-top: 0;
	margin-bottom: 1rem;
	color: var(--color-text-heading);
}

.project p {
	font-size: 1rem;
	line-height: 1.7;
	flex-grow: 1;
}

.tags {
	margin-top: 1.5rem;
	margin-bottom: 1.5rem;
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem;
}

.tags span {
	background-color: rgba(88, 166, 255, 0.1);
	color: var(--color-accent);
	padding: 0.3em 0.8em;
	border-radius: 999px;
	font-size: 0.85rem;
	font-weight: bold;
}

/* BOTONS */
.button {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 0.8em;
	padding: 0.8em 1.5em;
	border: 1px solid var(--color-border);
	border-radius: var(--border-radius);
	background-color: var(--color-button-bg);
	color: var(--color-text-heading);
	font-family: var(--font-heading);
	font-weight: bold;
	font-size: 1rem;
	text-align: center;
	transition: background-color 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
	cursor: pointer;
	align-self: flex-start;
	text-decoration: none;
}

.button:hover,
.button:focus {
	background-color: var(--color-primary);
	border-color: var(--color-primary-hover);
	color: #FFFFFF;
	transform: scale(1.05);
}

.button:hover svg, .button:focus svg {
	stroke: #FFFFFF;
}

/* SECCIÓ DE TFGS */
.tfg-projects .project {
    border-style: dashed;
    border-color: var(--color-accent);
}

.tfg-projects .project .button {
    background-color: var(--color-button-bg);
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
}

.tfg-projects .project .button:hover {
    background-color: var(--color-primary);
    color: #FFFFFF;
}

/* SECCIÓ DE CONTACTE */
aside {
	padding: 5rem;
	background-color: var(--color-surface);
	text-align: center;
	border-top: 1px solid var(--color-border);
	transition: background-color 0.3s ease, border-color 0.3s ease;
}

aside h2 {
	font-family: var(--font-heading);
	font-size: 2.8rem;
	margin-bottom: 2.5rem;
	color: var(--color-text-heading);
}

.actions {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	gap: 1.5em;
	list-style: none;
	padding: 0;
}

.actions .button svg {
	width: 1.2em;
	height: 1.2em;
	transition: stroke 0.2s ease;
}

/* PEU DE PÀGINA */
footer {
	padding: 3rem 2rem;
	text-align: center;
	color: #8B949E;
	font-size: 0.9rem;
}

footer a {
    color: var(--color-accent);
    text-decoration: none;
    position: relative;
    padding-bottom: 2px;
}

footer a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background-color: var(--color-accent);
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.4s ease-out;
}

footer a:hover::after {
    transform: scaleX(1);
    transform-origin: left;
}

/* ANIMACIONS I DISSENY */
@keyframes fadeInDown {
	from {
		opacity: 0;
		transform: translateY(-20px);
	}
	to {
		opacity: 1;
		transform: translateY(0);
	}
}

@media (max-width: 90em) {
	main {
		padding: 4rem 2rem;
		padding-top: 0;
	}
}

@media (max-width: 40em) {
	header, main, aside, footer {
		padding: 3rem 1.5rem;
	}

	main {
		padding-top: 0;
	}

	header h1, main h2, aside h2 {
		font-size: 2.2rem;
	}
}