@import url("https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=Outfit:wght@500;600;700&display=swap");

/* Design tokens — twilight sky + glass chrome */
:root {
	--font-sans: "DM Sans", system-ui, -apple-system, "Segoe UI", Roboto, Ubuntu, sans-serif;
	--font-display: "Outfit", var(--font-sans);
	--ink: #0c1222;
	--ink-soft: rgba(12, 18, 34, 0.72);
	--mist: rgba(255, 255, 255, 0.14);
	--glass: rgba(255, 255, 255, 0.12);
	--glass-strong: rgba(255, 255, 255, 0.2);
	--stroke: rgba(255, 255, 255, 0.22);
	--glow: #5eead4;
	--glow-deep: #0d9488;
	--accent: #38bdf8;
	--danger: #fb7185;
	--shadow-lg: 0 24px 80px rgba(8, 15, 35, 0.45);
	--shadow-soft: 0 12px 40px rgba(8, 15, 35, 0.28);
	--radius-lg: 20px;
	--radius-md: 14px;
	--radius-pill: 999px;
	--ease-out: cubic-bezier(0.22, 1, 0.36, 1);
	--ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

@media (prefers-color-scheme: light) {
	:root {
		--ink: #0f172a;
		--ink-soft: rgba(15, 23, 42, 0.78);
		--mist: rgba(255, 255, 255, 0.35);
		--glass: rgba(255, 255, 255, 0.45);
		--glass-strong: rgba(255, 255, 255, 0.65);
		--stroke: rgba(15, 23, 42, 0.12);
		--shadow-lg: 0 24px 60px rgba(15, 23, 42, 0.2);
		--shadow-soft: 0 12px 36px rgba(15, 23, 42, 0.14);
	}
}

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

html {
	height: 100%;
	width: 100%;
	overflow: hidden;
	overflow-x: clip;
	-webkit-text-size-adjust: 100%;
}

body {
	margin: 0;
	width: 100%;
	max-width: 100%;
	min-height: 100%;
	height: 100dvh;
	max-height: 100dvh;
	overflow: hidden;
	overflow-x: clip;
	overscroll-behavior: none;
	display: flex;
	flex-direction: column;
	font-family: var(--font-sans);
	color: #f8fafc;
	background: #0b1020 url("sky-and-clouds.jpg") center / cover no-repeat fixed;
	background-color: #0b1020;
	line-height: 1.5;
	-webkit-font-smoothing: antialiased;
}

/* Narrow viewports: lock document height; dvh fallback if svh unsupported */
@media (max-width: 1024px) {
	html {
		height: 100dvh;
		max-height: 100dvh;
	}

	html {
		height: 100svh;
		max-height: 100svh;
	}

	body {
		height: 100dvh;
		max-height: 100dvh;
		background-attachment: scroll;
	}

	body {
		height: 100svh;
		max-height: 100svh;
	}
}

.hidden {
	display: none !important;
}

.wrapper {
	position: relative;
	flex: 1 1 auto;
	min-height: 0;
	width: 100%;
	max-width: 100%;
	display: flex;
	flex-direction: column;
	overflow: hidden;
}

.wrapper.is-playing .birdTitle {
	opacity: 0;
	transform: translateY(-8px);
	pointer-events: none;
}

/* Top bar — glass HUD */
.top-bar {
	position: relative;
	z-index: 5;
	display: flex;
	align-items: center;
	justify-content: space-between;
	gap: 1rem;
	padding: 0.85rem clamp(1rem, 4vw, 2rem);
	padding-top: max(0.85rem, env(safe-area-inset-top));
	background: linear-gradient(
		180deg,
		rgba(8, 12, 28, 0.55) 0%,
		rgba(8, 12, 28, 0.2) 100%
	);
	backdrop-filter: blur(16px) saturate(140%);
	-webkit-backdrop-filter: blur(16px) saturate(140%);
	border-bottom: 1px solid var(--stroke);
}

.brand {
	display: flex;
	align-items: center;
	gap: 0.75rem;
	min-width: 0;
}

.brand__mark {
	width: 40px;
	height: 40px;
	border-radius: 12px;
	background: linear-gradient(135deg, var(--glow) 0%, var(--accent) 100%);
	box-shadow: 0 8px 24px rgba(14, 165, 233, 0.35);
	flex-shrink: 0;
}

.brand__text {
	display: flex;
	flex-direction: column;
	gap: 0.1rem;
	min-width: 0;
}

.brand__title {
	font-family: var(--font-display);
	font-weight: 700;
	font-size: clamp(1.05rem, 2.5vw, 1.25rem);
	letter-spacing: -0.02em;
	line-height: 1.15;
}

.brand__tag {
	font-size: 0.72rem;
	font-weight: 500;
	text-transform: uppercase;
	letter-spacing: 0.12em;
	color: rgba(248, 250, 252, 0.65);
}

.hud {
	display: flex;
	align-items: stretch;
	gap: 0.5rem;
}

.hud__item {
	display: flex;
	flex-direction: column;
	align-items: flex-end;
	justify-content: center;
	padding: 0.45rem 0.9rem;
	min-width: 4.5rem;
	background: var(--glass);
	border: 1px solid var(--stroke);
	border-radius: var(--radius-md);
	box-shadow: var(--shadow-soft);
	backdrop-filter: blur(10px);
	-webkit-backdrop-filter: blur(10px);
	transition: transform 0.25s var(--ease-out), border-color 0.25s ease;
}

.hud__item--score {
	background: linear-gradient(145deg, rgba(94, 234, 212, 0.18), var(--glass));
	border-color: rgba(94, 234, 212, 0.35);
}

.hud__label {
	font-size: 0.65rem;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.14em;
	color: rgba(248, 250, 252, 0.55);
}

.hud__value {
	font-family: var(--font-display);
	font-weight: 700;
	font-size: 1.35rem;
	font-variant-numeric: tabular-nums;
	letter-spacing: -0.03em;
	line-height: 1.2;
}

/* Playfield */
.playfield {
	flex: 1;
	position: relative;
	display: flex;
	flex-direction: column;
	min-height: 0;
}

.playfield__inner {
	position: relative;
	flex: 1;
	min-height: 0;
	display: flex;
	flex-direction: column;
	padding: clamp(0.5rem, 1.5vw, 1rem);
	padding-bottom: max(0.5rem, env(safe-area-inset-bottom));
}

.birdTitle {
	position: absolute;
	left: 50%;
	top: clamp(3.5rem, 12vh, 5rem);
	transform: translateX(-50%);
	text-align: center;
	z-index: 1;
	max-width: min(28rem, 100%);
	pointer-events: none;
	transition: opacity 0.45s var(--ease-out), transform 0.45s var(--ease-out);
}

.birdTitle h1 {
	font-family: var(--font-display);
	font-weight: 700;
	font-size: clamp(1.35rem, 4vw, 2rem);
	margin: 0 0 0.35rem;
	letter-spacing: -0.03em;
	text-shadow: 0 2px 24px rgba(0, 0, 0, 0.35);
}

.birdTitle__hint {
	margin: 0;
	font-size: clamp(0.85rem, 2.2vw, 0.95rem);
	color: rgba(248, 250, 252, 0.85);
	text-shadow: 0 1px 12px rgba(0, 0, 0, 0.4);
}

.game-surface {
	position: relative;
	flex: 1 1 0;
	min-height: 0;
	width: 100%;
	max-height: min(720px, calc(100dvh - 7.25rem));
	border-radius: var(--radius-lg);
	border: 1px solid var(--stroke);
	background: rgba(8, 12, 28, 0.15);
	box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), var(--shadow-lg);
	overflow: hidden;
	z-index: 2;
	touch-action: manipulation;
}

/* Overlays */
.overlay {
	position: absolute;
	inset: 0;
	z-index: 20;
	display: flex;
	align-items: center;
	justify-content: center;
	padding: 1.5rem;
	padding: max(1.5rem, env(safe-area-inset-top)) max(1.5rem, env(safe-area-inset-right))
		max(1.5rem, env(safe-area-inset-bottom)) max(1.5rem, env(safe-area-inset-left));
	background: radial-gradient(ellipse 120% 80% at 50% 0%, rgba(56, 189, 248, 0.12), transparent 55%),
		rgba(6, 10, 26, 0.55);
	backdrop-filter: blur(10px);
	-webkit-backdrop-filter: blur(10px);
	animation: overlay-in 0.5s var(--ease-out) both;
}

.overlay--gameover {
	background: radial-gradient(ellipse at 50% 20%, rgba(251, 113, 133, 0.15), transparent 50%),
		rgba(6, 10, 26, 0.65);
}

@keyframes overlay-in {
	from {
		opacity: 0;
	}
	to {
		opacity: 1;
	}
}

.hero-card,
.modal-card {
	width: min(100%, 400px);
	padding: clamp(1.5rem, 4vw, 2.25rem);
	border-radius: var(--radius-lg);
	background: linear-gradient(155deg, var(--glass-strong), var(--glass));
	border: 1px solid var(--stroke);
	box-shadow: var(--shadow-lg);
	backdrop-filter: blur(20px) saturate(160%);
	-webkit-backdrop-filter: blur(20px) saturate(160%);
	text-align: center;
	animation: card-rise 0.55s var(--ease-out) 0.08s both;
}

@keyframes card-rise {
	from {
		opacity: 0;
		transform: translateY(16px) scale(0.98);
	}
	to {
		opacity: 1;
		transform: translateY(0) scale(1);
	}
}

.hero-card__eyebrow {
	margin: 0 0 0.5rem;
	font-size: 0.7rem;
	font-weight: 600;
	text-transform: uppercase;
	letter-spacing: 0.16em;
	color: rgba(248, 250, 252, 0.55);
}

.hero-card__title {
	font-family: var(--font-display);
	font-weight: 700;
	font-size: clamp(1.75rem, 5vw, 2.35rem);
	margin: 0 0 0.65rem;
	letter-spacing: -0.04em;
	background: linear-gradient(120deg, #f8fafc 0%, var(--glow) 45%, var(--accent) 100%);
	-webkit-background-clip: text;
	background-clip: text;
	color: transparent;
}

.hero-card__lede {
	margin: 0 0 1.35rem;
	font-size: 0.95rem;
	color: rgba(248, 250, 252, 0.78);
	line-height: 1.55;
}

.hero-card__note {
	margin: 1rem 0 0;
	font-size: 0.78rem;
	color: rgba(248, 250, 252, 0.45);
}

.modal-card__title {
	font-family: var(--font-display);
	font-weight: 700;
	font-size: 1.5rem;
	margin: 0 0 0.5rem;
	color: #fecdd3;
	letter-spacing: -0.02em;
}

.modal-card__text {
	margin: 0 0 0.75rem;
	color: rgba(248, 250, 252, 0.75);
	font-size: 0.95rem;
}

.modal-card__score {
	margin: 0 0 1.35rem;
	font-size: 1rem;
	color: rgba(248, 250, 252, 0.88);
}

.modal-card__score strong {
	font-family: var(--font-display);
	font-weight: 700;
	font-size: 1.35rem;
	color: var(--glow);
	font-variant-numeric: tabular-nums;
}

/* Buttons */
.btn {
	position: relative;
	display: inline-flex;
	align-items: center;
	justify-content: center;
	gap: 0.5rem;
	padding: 0.85rem 1.6rem;
	font-family: var(--font-sans);
	font-size: 0.95rem;
	font-weight: 600;
	letter-spacing: 0.02em;
	color: #042f2e;
	background: linear-gradient(145deg, #5eead4 0%, #2dd4bf 40%, #14b8a6 100%);
	border: none;
	border-radius: var(--radius-pill);
	cursor: pointer;
	box-shadow: 0 4px 20px rgba(20, 184, 166, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.35);
	transition: transform 0.2s var(--ease-spring), box-shadow 0.25s ease, filter 0.2s ease;
	overflow: hidden;
}

.btn:focus-visible {
	outline: 2px solid var(--accent);
	outline-offset: 3px;
}

.btn:hover {
	transform: translateY(-2px);
	box-shadow: 0 8px 28px rgba(20, 184, 166, 0.55), inset 0 1px 0 rgba(255, 255, 255, 0.4);
	filter: brightness(1.03);
}

.btn:active {
	transform: translateY(0);
	transition-duration: 0.1s;
}

.btn__shine {
	position: absolute;
	inset: 0;
	background: linear-gradient(
		105deg,
		transparent 0%,
		rgba(255, 255, 255, 0.35) 45%,
		transparent 55%
	);
	transform: translateX(-100%);
	animation: shine 4s ease-in-out infinite;
	pointer-events: none;
}

@keyframes shine {
	0%,
	70% {
		transform: translateX(-100%);
	}
	85% {
		transform: translateX(100%);
	}
	100% {
		transform: translateX(100%);
	}
}

/* Game entities */
.game-surface img {
	filter: drop-shadow(0 6px 12px rgba(0, 0, 0, 0.25));
	transition: transform 0.15s var(--ease-out), filter 0.15s ease;
}

.game-surface img:hover {
	transform: scale(1.04);
	filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.35));
}

/* Phone landscape — one-screen layout: top bar + full-width playfield */
@media (orientation: landscape) and (max-height: 640px) {
	.top-bar {
		flex-wrap: nowrap;
		align-items: center;
		padding: 0.35rem clamp(0.6rem, 2vw, 1rem);
		padding-top: max(0.35rem, env(safe-area-inset-top));
		gap: 0.5rem;
	}

	.brand__mark {
		width: 32px;
		height: 32px;
		border-radius: 10px;
	}

	.brand__title {
		font-size: clamp(0.9rem, 2.8vw, 1.05rem);
	}

	.brand__tag {
		display: none;
	}

	.hud {
		gap: 0.35rem;
	}

	.hud__item {
		min-width: 3.25rem;
		padding: 0.28rem 0.5rem;
	}

	.hud__label {
		font-size: 0.55rem;
	}

	.hud__value {
		font-size: 1rem;
	}

	.playfield__inner {
		padding: 0.35rem clamp(0.35rem, 1.5vw, 0.65rem);
		padding-bottom: max(0.35rem, env(safe-area-inset-bottom));
	}

	.game-surface {
		max-height: none;
		flex: 1 1 0;
		min-height: 0;
		border-radius: var(--radius-md);
	}

	.birdTitle h1 {
		font-size: clamp(1rem, 3.5vw, 1.25rem);
	}

	.birdTitle__hint {
		font-size: 0.8rem;
	}

	.hero-card,
	.modal-card {
		width: 100%;
		max-width: 320px;
		padding: 1.15rem 1rem;
	}

	.hero-card__lede {
		font-size: 0.88rem;
	}
}

/* Touch / small screens — tighter HUD, no horizontal bleed */
@media (max-width: 600px) {
	h1 {
		font-size: clamp(1.1rem, 4vw, 1.35rem);
	}

	.top-bar {
		flex-wrap: nowrap;
		gap: 0.5rem;
		padding-left: max(0.65rem, env(safe-area-inset-left));
		padding-right: max(0.65rem, env(safe-area-inset-right));
	}

	.brand {
		min-width: 0;
		flex: 1 1 auto;
	}

	.brand__title {
		overflow: hidden;
		text-overflow: ellipsis;
		white-space: nowrap;
	}

	.brand__tag {
		display: none;
	}

	.hud {
		flex-shrink: 0;
	}

	.hud__item {
		min-width: 0;
		padding: 0.35rem 0.55rem;
	}

	.hud__value {
		font-size: 1.05rem;
	}

	.game-surface {
		max-height: none;
		flex: 1 1 0;
		min-height: 0;
	}

	.hero-card,
	.modal-card {
		width: 100%;
		max-width: 340px;
		padding: 1.35rem 1.15rem;
	}
}

/* Force landscape presentation when device is physically portrait */
@media (max-width: 600px) and (orientation: portrait) {
	body {
		background-image: url("sky-and-clouds-rotated.jpg");
	}

	.wrapper {
		position: fixed;
		top: 0;
		left: 0;
		width: 100dvh;
		height: 100vw;
		max-width: none;
		transform-origin: top left;
		transform: rotate(90deg) translateY(-100%);
		overflow: hidden;
		contain: layout paint;
	}

	.playfield__inner {
		overflow-y: auto;
		overflow-x: hidden;
	}
}

@media (max-width: 600px) and (orientation: portrait) {
	.wrapper {
		width: 100svh;
	}
}

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

	.btn__shine {
		display: none;
	}
}