/*
 * Prathamesh Portfolio — Main Stylesheet
 *
 * Table of Contents:
 * 1. Custom Properties
 * 2. Reset & Base
 * 3. Split Layout
 * 4. Left Sidebar — Projects
 * 5. Center — Featured Area
 * 6. Right Sidebar — Navigation
 * 7. Project Card
 * 8. Section Panels
 * 9. Navigation Links
 * 10. Availability Badge
 * 11. Animations
 * 12. Responsive
 * 13. Utilities
 */

/* =============================================================================
   1. Custom Properties
   ============================================================================= */

:root {
	--color-ink: #0d0d0d;
	--color-paper: #f5f4f0;
	--color-white: #ffffff;
	--color-muted: #888884;
	--color-border: #e2e0d8;
	--color-accent: #c8ff00;
	--color-accent-hover: #addf00;
	--color-project-hover: #f0ede4;

	--font-sans: 'DM Sans', sans-serif;
	--font-serif: 'DM Serif Display', serif;
	--font-mono: 'JetBrains Mono', monospace;

	--sidebar-width: 280px;
	--header-height: 60px;

	--transition-fast: 120ms ease;
	--transition-base: 220ms ease;
	--transition-slow: 380ms cubic-bezier(0.16, 1, 0.3, 1);
}

/* =============================================================================
   2. Reset & Base
   ============================================================================= */

*,
*::before,
*::after {
	box-sizing: border-box;
}

html {
	-webkit-font-smoothing: antialiased;
	-moz-osx-font-smoothing: grayscale;
	scroll-behavior: smooth;
}

body {
	margin: 0;
	background-color: var(--color-paper);
	color: var(--color-ink);
	font-family: var(--font-sans);
	font-size: 1rem;
	line-height: 1.65;
	min-height: 100svh;
	overflow-x: hidden;
}

img,
svg {
	display: block;
	max-width: 100%;
	height: auto;
}

a {
	color: inherit;
	text-decoration: none;
}

a:focus-visible {
	outline: 2px solid var(--color-ink);
	outline-offset: 3px;
	border-radius: 2px;
}

button {
	cursor: pointer;
	font-family: inherit;
}

::-webkit-scrollbar {
	width: 4px;
}

::-webkit-scrollbar-track {
	background: transparent;
}

::-webkit-scrollbar-thumb {
	background: var(--color-border);
	border-radius: 2px;
}

/* =============================================================================
   3. Split Layout
   ============================================================================= */

.pp-portfolio-layout {
	display: grid;
	grid-template-columns: var(--sidebar-width) 1fr var(--sidebar-width);
	grid-template-rows: 1fr;
	min-height: 100svh;
	position: relative;
}

/* Vertical dividers between columns */
.pp-portfolio-layout::before,
.pp-portfolio-layout::after {
	content: '';
	position: fixed;
	top: 0;
	bottom: 0;
	width: 1px;
	background-color: var(--color-border);
	z-index: 10;
	pointer-events: none;
}

.pp-portfolio-layout::before {
	left: var(--sidebar-width);
}

.pp-portfolio-layout::after {
	right: var(--sidebar-width);
}

/* =============================================================================
   4. Left Sidebar — Projects
   ============================================================================= */

.pp-sidebar-left {
	position: fixed;
	top: 0;
	left: 0;
	width: var(--sidebar-width);
	height: 100svh;
	display: flex;
	flex-direction: column;
	overflow: hidden;
	z-index: 20;
}

.pp-sidebar-left__header {
	padding: 2rem 1.75rem 1.25rem;
	flex-shrink: 0;
}

.pp-sidebar-left__label {
	font-family: var(--font-mono);
	font-size: 0.65rem;
	letter-spacing: 0.15em;
	text-transform: uppercase;
	color: var(--color-muted);
	display: block;
	margin-bottom: 0.25rem;
}

.pp-sidebar-left__count {
	font-family: var(--font-serif);
	font-size: 0.875rem;
	color: var(--color-muted);
	font-style: italic;
}

.pp-projects-list {
	flex: 1;
	overflow-y: auto;
	overflow-x: hidden;
	padding: 0 0 2rem;
	scrollbar-width: thin;
	scrollbar-color: var(--color-border) transparent;
}

.pp-projects-list::-webkit-scrollbar {
	width: 3px;
}

/* =============================================================================
   5. Center — Main Content Area
   ============================================================================= */

.pp-main-content {
	grid-column: 2;
	margin-left: var(--sidebar-width);
	margin-right: var(--sidebar-width);
	min-height: 100svh;
	position: relative;
}

/* Welcome / hero state shown before a project is selected */
.pp-welcome {
	position: sticky;
	top: 0;
	height: 100svh;
	display: flex;
	flex-direction: column;
	justify-content: center;
	padding: 0 3rem;
}

.pp-welcome__kicker {
	font-family: var(--font-mono);
	font-size: 0.7rem;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	color: var(--color-muted);
	margin: 0 0 1.25rem;
}

.pp-welcome__name {
	font-family: var(--font-serif);
	font-size: clamp(2.5rem, 6vw, 5.5rem);
	font-weight: 400;
	line-height: 1.05;
	margin: 0 0 1.5rem;
	letter-spacing: -0.02em;
}

.pp-welcome__tagline {
	font-size: 1.0625rem;
	color: var(--color-muted);
	max-width: 38ch;
	margin: 0;
	line-height: 1.6;
}

/* Project detail panel */
.pp-project-detail {
	padding: 3rem;
	min-height: 100svh;
	display: none;
	opacity: 0;
	transform: translateY(12px);
	transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.pp-project-detail.is-active {
	display: block;
	opacity: 1;
	transform: translateY(0);
}

.pp-project-detail__year {
	font-family: var(--font-mono);
	font-size: 0.7rem;
	letter-spacing: 0.12em;
	text-transform: uppercase;
	color: var(--color-muted);
	display: block;
	margin-bottom: 0.75rem;
}

.pp-project-detail__title {
	font-family: var(--font-serif);
	font-size: clamp(1.75rem, 4vw, 3.25rem);
	font-weight: 400;
	line-height: 1.1;
	margin: 0 0 1.5rem;
	letter-spacing: -0.02em;
}

.pp-project-detail__excerpt {
	font-size: 1.0625rem;
	color: var(--color-muted);
	max-width: 55ch;
	line-height: 1.7;
	margin: 0 0 2.5rem;
}

.pp-project-detail__tags {
	display: flex;
	flex-wrap: wrap;
	gap: 0.5rem;
	margin-bottom: 2.5rem;
}

.pp-project-detail__tag {
	font-family: var(--font-mono);
	font-size: 0.6875rem;
	letter-spacing: 0.05em;
	padding: 0.3rem 0.75rem;
	border: 1px solid var(--color-border);
	border-radius: 100px;
	color: var(--color-muted);
}

.pp-project-detail__links {
	display: flex;
	gap: 1rem;
	flex-wrap: wrap;
}

.pp-project-detail__link {
	display: inline-flex;
	align-items: center;
	gap: 0.4rem;
	font-size: 0.8125rem;
	font-weight: 500;
	letter-spacing: 0.06em;
	text-transform: uppercase;
	padding: 0.625rem 1.25rem;
	border: 1px solid var(--color-ink);
	transition: background-color var(--transition-fast), color var(--transition-fast);
}

.pp-project-detail__link:hover {
	background-color: var(--color-ink);
	color: var(--color-paper);
}

.pp-project-detail__link--secondary {
	border-color: var(--color-border);
	color: var(--color-muted);
}

.pp-project-detail__link--secondary:hover {
	background-color: var(--color-ink);
	border-color: var(--color-ink);
	color: var(--color-paper);
}

.pp-project-detail__cover {
	margin-top: 3rem;
	aspect-ratio: 16 / 9;
	overflow: hidden;
	background-color: var(--color-border);
}

.pp-project-detail__cover img {
	width: 100%;
	height: 100%;
	object-fit: cover;
	transition: transform 0.6s ease;
}

.pp-project-detail__cover:hover img {
	transform: scale(1.02);
}

/* =============================================================================
   6. Right Sidebar — Navigation
   ============================================================================= */

.pp-sidebar-right {
	position: fixed;
	top: 0;
	right: 0;
	width: var(--sidebar-width);
	height: 100svh;
	display: flex;
	flex-direction: column;
	padding: 2rem 1.75rem;
	z-index: 20;
}

/* Top section: Name + availability */
.pp-sidebar-right__top {
	margin-bottom: auto;
}

.pp-site-name {
	font-family: var(--font-serif);
	font-size: 1rem;
	font-weight: 400;
	margin: 0 0 0.375rem;
	line-height: 1.2;
}

.pp-availability {
	display: inline-flex;
	align-items: center;
	gap: 0.375rem;
	font-size: 0.6875rem;
	font-family: var(--font-mono);
	letter-spacing: 0.06em;
	color: var(--color-muted);
}

.pp-availability__dot {
	width: 6px;
	height: 6px;
	border-radius: 50%;
	background-color: var(--color-muted);
	flex-shrink: 0;
}

.pp-availability--open .pp-availability__dot {
	background-color: #22c55e;
	box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
	animation: pp-pulse 2s infinite;
}

.pp-availability--open {
	color: #16a34a;
}

/* Navigation links */
.pp-nav {
	margin-bottom: 2.5rem;
}

.pp-nav__list {
	list-style: none;
	margin: 0;
	padding: 0;
	display: flex;
	flex-direction: column;
	gap: 0;
}

.pp-nav__item {
	border-bottom: 1px solid var(--color-border);
}

.pp-nav__item:first-child {
	border-top: 1px solid var(--color-border);
}

.pp-nav__link {
	display: flex;
	align-items: center;
	justify-content: space-between;
	padding: 0.75rem 0;
	font-size: 0.9375rem;
	font-weight: 400;
	color: var(--color-ink);
	transition: color var(--transition-fast);
}

.pp-nav__link:hover {
	color: var(--color-muted);
}

.pp-nav__link.is-active {
	font-weight: 500;
}

.pp-nav__arrow {
	font-size: 0.75rem;
	opacity: 0;
	transform: translateX(-4px);
	transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.pp-nav__link:hover .pp-nav__arrow,
.pp-nav__link.is-active .pp-nav__arrow {
	opacity: 1;
	transform: translateX(0);
}

/* Social links */
.pp-social {
	display: flex;
	gap: 1rem;
	align-items: center;
}

.pp-social__link {
	font-family: var(--font-mono);
	font-size: 0.65rem;
	letter-spacing: 0.08em;
	text-transform: uppercase;
	color: var(--color-muted);
	transition: color var(--transition-fast);
}

.pp-social__link:hover {
	color: var(--color-ink);
}

/* =============================================================================
   7. Project Card (left sidebar list item)
   ============================================================================= */

.pp-project-item {
	display: block;
	padding: 1rem 1.75rem;
	cursor: pointer;
	border-left: 2px solid transparent;
	transition: background-color var(--transition-fast), border-color var(--transition-fast);
	position: relative;
}

.pp-project-item:hover {
	background-color: var(--color-project-hover);
}

.pp-project-item.is-active {
	border-left-color: var(--color-ink);
	background-color: var(--color-project-hover);
}

.pp-project-item__number {
	font-family: var(--font-mono);
	font-size: 0.6rem;
	letter-spacing: 0.1em;
	color: var(--color-muted);
	display: block;
	margin-bottom: 0.2rem;
}

.pp-project-item__title {
	font-size: 0.9375rem;
	font-weight: 400;
	line-height: 1.3;
	display: block;
	margin-bottom: 0.25rem;
}

.pp-project-item__year {
	font-family: var(--font-mono);
	font-size: 0.6875rem;
	color: var(--color-muted);
	display: block;
}

.pp-project-item__status {
	position: absolute;
	top: 1.1rem;
	right: 1rem;
	width: 5px;
	height: 5px;
	border-radius: 50%;
	background-color: var(--color-border);
}

.pp-project-item__status--live {
	background-color: #22c55e;
}

.pp-project-item__status--wip {
	background-color: #f59e0b;
}

/* =============================================================================
   8. Section Panels (About, Contact etc.)
   ============================================================================= */

.pp-panel {
	padding: 3rem;
	min-height: 100svh;
	display: none;
	opacity: 0;
	transform: translateY(12px);
	transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.pp-panel.is-active {
	display: block;
	opacity: 1;
	transform: translateY(0);
}

.pp-panel__kicker {
	font-family: var(--font-mono);
	font-size: 0.65rem;
	letter-spacing: 0.15em;
	text-transform: uppercase;
	color: var(--color-muted);
	display: block;
	margin-bottom: 1.25rem;
}

.pp-panel__title {
	font-family: var(--font-serif);
	font-size: clamp(1.75rem, 4vw, 3rem);
	font-weight: 400;
	line-height: 1.1;
	margin: 0 0 2rem;
	letter-spacing: -0.02em;
}

.pp-panel__body {
	font-size: 1.0625rem;
	max-width: 52ch;
	color: var(--color-muted);
	line-height: 1.75;
}

.pp-panel__body p {
	margin: 0 0 1.25rem;
}

.pp-panel__body p:last-child {
	margin-bottom: 0;
}

/* =============================================================================
   9. Loading state
   ============================================================================= */

.pp-loading {
	padding: 1.75rem;
	display: flex;
	flex-direction: column;
	gap: 0.875rem;
}

.pp-loading__item {
	height: 52px;
	background: linear-gradient(90deg, var(--color-border) 25%, var(--color-project-hover) 50%, var(--color-border) 75%);
	background-size: 200% 100%;
	animation: pp-shimmer 1.4s ease infinite;
	border-radius: 2px;
}

/* =============================================================================
   10. Animations
   ============================================================================= */

@keyframes pp-pulse {
	0%,
	100% {
		box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.2);
	}
	50% {
		box-shadow: 0 0 0 6px rgba(34, 197, 94, 0.05);
	}
}

@keyframes pp-shimmer {
	0% {
		background-position: 200% 0;
	}
	100% {
		background-position: -200% 0;
	}
}

/* =============================================================================
   11. Responsive — Tablet
   ============================================================================= */

@media (max-width: 1024px) {
	:root {
		--sidebar-width: 240px;
	}

	.pp-welcome {
		padding: 0 2rem;
	}

	.pp-project-detail,
	.pp-panel {
		padding: 2rem;
	}
}

/* =============================================================================
   12. Responsive — Mobile
   ============================================================================= */

@media (max-width: 768px) {
	.pp-portfolio-layout {
		grid-template-columns: 1fr;
		grid-template-rows: auto;
	}

	.pp-portfolio-layout::before,
	.pp-portfolio-layout::after {
		display: none;
	}

	/* Mobile: header bar on top */
	.pp-mobile-header {
		position: sticky;
		top: 0;
		z-index: 100;
		background-color: var(--color-paper);
		border-bottom: 1px solid var(--color-border);
		padding: 1rem 1.25rem;
		display: flex;
		align-items: center;
		justify-content: space-between;
	}

	.pp-mobile-header__name {
		font-family: var(--font-serif);
		font-size: 1rem;
	}

	.pp-mobile-menu-toggle {
		background: none;
		border: none;
		padding: 0.25rem;
		display: flex;
		flex-direction: column;
		gap: 4px;
	}

	.pp-mobile-menu-toggle span {
		display: block;
		width: 20px;
		height: 1px;
		background-color: var(--color-ink);
		transition: transform var(--transition-base), opacity var(--transition-base);
	}

	.pp-sidebar-left,
	.pp-sidebar-right {
		position: static;
		width: 100%;
		height: auto;
	}

	.pp-sidebar-left {
		overflow: visible;
		display: none;
	}

	.pp-sidebar-left.is-open {
		display: flex;
	}

	.pp-projects-list {
		overflow: visible;
		padding-bottom: 1rem;
	}

	.pp-main-content {
		margin: 0;
		grid-column: 1;
	}

	.pp-welcome {
		height: auto;
		padding: 2.5rem 1.25rem;
		position: static;
	}

	.pp-project-detail,
	.pp-panel {
		padding: 1.5rem 1.25rem;
		min-height: 0;
	}

	.pp-sidebar-right {
		padding: 1.5rem 1.25rem;
		height: auto;
		flex-direction: row;
		flex-wrap: wrap;
		gap: 1.5rem;
		align-items: flex-start;
		border-top: 1px solid var(--color-border);
	}

	.pp-sidebar-right__top {
		margin-bottom: 0;
		flex: 1;
	}

	.pp-nav {
		margin-bottom: 0;
		flex: 1;
		min-width: 140px;
	}
}

/* =============================================================================
   13. Utilities
   ============================================================================= */

.sr-only {
	position: absolute;
	width: 1px;
	height: 1px;
	padding: 0;
	margin: -1px;
	overflow: hidden;
	clip: rect(0, 0, 0, 0);
	white-space: nowrap;
	border-width: 0;
}

.pp-divider {
	height: 1px;
	background-color: var(--color-border);
	border: none;
	margin: 2rem 0;
}