/* ===========================
   VARIABLES & RESET
   =========================== */
:root {
	--primary-bg: #0a1628;
	--secondary-bg: #1a2742;
	--accent-red: #c41e3a;
	--accent-gold: #d4af37;
	--accent-white: #f8f9fa;
	--text-light: #ffffff;
	--shadow-color: rgba(0, 0, 0, 0.3);
}

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

body {
	margin: 0;
	padding: 0;
	font-family: "Poppins", sans-serif;
	background: linear-gradient(135deg, #0a1628 0%, #1a2742 50%, #2d3e5f 100%);
	color: var(--text-light);
	min-height: 100vh;
	overflow-x: hidden;
	position: relative;
}

/* ===========================
   SNOWFLAKES ANIMATION
   =========================== */
.snowflakes {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	pointer-events: none;
	z-index: 1;
	overflow: hidden;
}

.snowflake {
	position: absolute;
	top: -10%;
	color: var(--accent-white);
	font-size: 1.5em;
	opacity: 0.8;
	animation: fall linear infinite;
	text-shadow: 0 0 10px rgba(255, 255, 255, 0.8);
}

.snowflake:nth-child(1) {
	left: 10%;
	animation-duration: 12s;
	animation-delay: 0s;
	font-size: 1.2em;
}
.snowflake:nth-child(2) {
	left: 20%;
	animation-duration: 15s;
	animation-delay: 2s;
	font-size: 1.8em;
}
.snowflake:nth-child(3) {
	left: 30%;
	animation-duration: 10s;
	animation-delay: 4s;
	font-size: 1em;
}
.snowflake:nth-child(4) {
	left: 40%;
	animation-duration: 13s;
	animation-delay: 1s;
	font-size: 1.5em;
}
.snowflake:nth-child(5) {
	left: 50%;
	animation-duration: 11s;
	animation-delay: 3s;
	font-size: 1.3em;
}
.snowflake:nth-child(6) {
	left: 60%;
	animation-duration: 14s;
	animation-delay: 5s;
	font-size: 1.6em;
}
.snowflake:nth-child(7) {
	left: 70%;
	animation-duration: 12s;
	animation-delay: 2s;
	font-size: 1.1em;
}
.snowflake:nth-child(8) {
	left: 80%;
	animation-duration: 16s;
	animation-delay: 4s;
	font-size: 1.4em;
}
.snowflake:nth-child(9) {
	left: 90%;
	animation-duration: 13s;
	animation-delay: 0s;
	font-size: 1.7em;
}
.snowflake:nth-child(10) {
	left: 15%;
	animation-duration: 11s;
	animation-delay: 3s;
	font-size: 1.2em;
}

@keyframes fall {
	0% {
		top: -10%;
		transform: translateX(0) rotate(0deg);
	}
	100% {
		top: 110%;
		transform: translateX(50px) rotate(360deg);
	}
}

/* ===========================
   MAIN CONTAINER
   =========================== */
.background {
	position: relative;
	min-height: 100vh;
	display: flex;
	justify-content: center;
	align-items: center;
	flex-direction: column;
	padding: 40px 20px;
	z-index: 2;
	gap: 30px;
}

/* ===========================
   TYPOGRAPHY
   =========================== */
h1 {
	font-family: "Playfair Display", serif;
	font-weight: 900;
	font-size: clamp(2.5rem, 6vw, 5rem);
	text-align: center;
	background: linear-gradient(
		135deg,
		var(--accent-gold) 0%,
		var(--accent-white) 50%,
		var(--accent-gold) 100%
	);
	-webkit-background-clip: text;
	-webkit-text-fill-color: transparent;
	background-clip: text;
	text-shadow: 0 4px 20px rgba(212, 175, 55, 0.5);
	margin-bottom: 20px;
	letter-spacing: 2px;
	animation: shimmer 3s ease-in-out infinite;
}

@keyframes shimmer {
	0%,
	100% {
		filter: brightness(1);
	}
	50% {
		filter: brightness(1.3);
	}
}

/* ===========================
   CALENDAR GRID
   =========================== */
.grid {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	grid-auto-rows: 100px;
	gap: 10px;
	padding: 15px;
	max-width: 600px;
	width: 100%;
	perspective: 1000px;
}

/* ===========================
   CALENDAR BOXES
   =========================== */
.box {
	background: linear-gradient(
		135deg,
		rgba(196, 30, 58, 0.9) 0%,
		rgba(139, 0, 0, 0.9) 100%
	);
	backdrop-filter: blur(10px);
	border: 2px solid rgba(212, 175, 55, 0.4);
	box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3),
		inset 0 2px 8px rgba(255, 255, 255, 0.2),
		0 0 20px rgba(212, 175, 55, 0.3);
	border-radius: 16px;
	color: var(--text-light);
	display: flex;
	justify-content: center;
	align-items: center;
	font-family: "Playfair Display", serif;
	font-size: 2.5rem;
	font-weight: 700;
	transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
	position: relative;
	cursor: pointer;
	overflow: hidden;
}

.box::before {
	content: "";
	position: absolute;
	top: 0;
	left: -100%;
	width: 100%;
	height: 100%;
	background: linear-gradient(
		90deg,
		transparent,
		rgba(255, 255, 255, 0.3),
		transparent
	);
	transition: left 0.6s;
}

.box:hover::before {
	left: 100%;
}

.box::after {
	content: "🎁";
	position: absolute;
	top: 8px;
	right: 8px;
	font-size: 1rem;
	opacity: 0.6;
}

.box:hover {
	transform: translateY(-8px) scale(1.05) rotateZ(2deg);
	box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5),
		inset 0 4px 12px rgba(255, 255, 255, 0.3),
		0 0 40px rgba(212, 175, 55, 0.6);
	border-color: var(--accent-gold);
}

/* Grid positioning - Mobile-first asymmetric layout */
.box-1 {
	grid-column: 1 / span 1;
	grid-row: 1 / span 1;
}
.box-2 {
	grid-column: 2 / span 1;
	grid-row: 1 / span 1;
}
.box-3 {
	grid-column: 3 / span 2;
	grid-row: 1 / span 1;
}
.box-4 {
	grid-column: 1 / span 1;
	grid-row: 2 / span 1;
}
.box-5 {
	grid-column: 2 / span 1;
	grid-row: 2 / span 2;
}
.box-6 {
	grid-column: 3 / span 1;
	grid-row: 2 / span 1;
}
.box-7 {
	grid-column: 4 / span 1;
	grid-row: 2 / span 1;
}
.box-8 {
	grid-column: 1 / span 1;
	grid-row: 3 / span 1;
}
.box-9 {
	grid-column: 3 / span 2;
	grid-row: 3 / span 1;
}
.box-10 {
	grid-column: 1 / span 2;
	grid-row: 4 / span 1;
}
.box-11 {
	grid-column: 3 / span 1;
	grid-row: 4 / span 1;
}
.box-12 {
	grid-column: 4 / span 1;
	grid-row: 4 / span 2;
}
.box-13 {
	grid-column: 1 / span 1;
	grid-row: 5 / span 1;
}
.box-14 {
	grid-column: 2 / span 1;
	grid-row: 5 / span 1;
}
.box-15 {
	grid-column: 3 / span 1;
	grid-row: 5 / span 1;
}
.box-16 {
	grid-column: 1 / span 1;
	grid-row: 6 / span 1;
}
.box-17 {
	grid-column: 2 / span 1;
	grid-row: 6 / span 1;
}
.box-18 {
	grid-column: 3 / span 1;
	grid-row: 6 / span 1;
}
.box-19 {
	grid-column: 4 / span 1;
	grid-row: 6 / span 1;
}
.box-20 {
	grid-column: 1 / span 1;
	grid-row: 7 / span 1;
}
.box-21 {
	grid-column: 2 / span 1;
	grid-row: 7 / span 1;
}
.box-22 {
	grid-column: 3 / span 1;
	grid-row: 7 / span 1;
}
.box-23 {
	grid-column: 4 / span 1;
	grid-row: 7 / span 1;
}
.box-24 {
	grid-column: 1 / span 4;
	grid-row: 8 / span 2;
	font-size: 3.5rem;
}

/* ===========================
   MODAL STYLES
   =========================== */
.modal {
	position: fixed;
	top: 0;
	left: 0;
	width: 100%;
	height: 100%;
	background-color: rgba(10, 22, 40, 0.9);
	backdrop-filter: blur(8px);
	display: flex;
	align-items: center;
	justify-content: center;
	z-index: 1000;
	animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
	from {
		opacity: 0;
	}
	to {
		opacity: 1;
	}
}

.modal-content {
	background: linear-gradient(
		135deg,
		rgba(26, 39, 66, 0.95) 0%,
		rgba(45, 62, 95, 0.95) 100%
	);
	backdrop-filter: blur(20px);
	padding: 40px 30px;
	border-radius: 24px;
	text-align: center;
	position: relative;
	width: 90%;
	max-width: 500px;
	box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5),
		inset 0 2px 10px rgba(255, 255, 255, 0.1),
		0 0 40px rgba(212, 175, 55, 0.2);
	border: 2px solid rgba(212, 175, 55, 0.3);
	animation: scaleIn 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes scaleIn {
	from {
		transform: scale(0.8);
		opacity: 0;
	}
	to {
		transform: scale(1);
		opacity: 1;
	}
}

.modal-content .close {
	position: absolute;
	top: 15px;
	right: 20px;
	font-size: 2rem;
	cursor: pointer;
	color: var(--accent-gold);
	transition: all 0.3s;
	font-weight: 300;
	line-height: 1;
}

.modal-content .close:hover {
	color: var(--text-light);
	transform: rotate(90deg);
}

.modal-content h2 {
	margin: 0 0 20px;
	font-family: "Playfair Display", serif;
	font-size: 1.8rem;
	color: var(--accent-gold);
	font-weight: 700;
}

.modal-content p {
	font-size: 1.1rem;
	color: var(--accent-white);
	line-height: 1.6;
	font-weight: 300;
}

.modal-content a {
	color: var(--accent-gold);
	text-decoration: none;
	font-weight: 600;
	transition: all 0.3s;
	border-bottom: 2px solid transparent;
}

.modal-content a:hover {
	color: var(--text-light);
	border-bottom-color: var(--accent-gold);
}

/* ===========================
   FOOTER
   =========================== */
.footer {
	margin-top: 30px;
	text-align: center;
}

.footer p {
	font-family: "Poppins", sans-serif;
	font-size: 1rem;
	color: var(--accent-white);
	font-weight: 300;
	letter-spacing: 0.5px;
}

.footer .highlight {
	color: var(--accent-gold);
	font-weight: 600;
}

/* ===========================
   RESPONSIVE DESIGN
   =========================== */

/* Tablettes et petits écrans */
@media (max-width: 900px) {
	.grid {
		max-width: 550px;
		grid-auto-rows: 95px;
		gap: 10px;
	}

	.box {
		font-size: 2.2rem;
	}
}

/* Smartphones en mode paysage et tablettes portrait */
@media (max-width: 768px) {
	.background {
		padding: 30px 15px;
		gap: 25px;
	}

	h1 {
		font-size: clamp(1.8rem, 5vw, 2.5rem);
		margin-bottom: 15px;
	}

	.grid {
		max-width: 100%;
		grid-template-columns: repeat(4, 1fr);
		grid-auto-rows: 85px;
		gap: 8px;
		padding: 10px;
	}

	.box {
		font-size: 2rem;
		border-radius: 14px;
	}

	.box::after {
		font-size: 0.9rem;
		top: 6px;
		right: 6px;
	}

	.modal-content {
		padding: 35px 25px;
		max-width: 90%;
		border-radius: 20px;
	}

	.modal-content h2 {
		font-size: 1.5rem;
	}

	.modal-content p {
		font-size: 1rem;
	}

	.footer {
		margin-top: 20px;
	}

	.footer p {
		font-size: 0.9rem;
		padding: 0 15px;
	}

	.snowflake {
		font-size: 1.2em;
	}
}

/* Smartphones portrait - optimisation principale */
@media (max-width: 480px) {
	body {
		font-size: 14px;
	}

	.background {
		padding: 20px 10px;
		gap: 20px;
	}

	h1 {
		font-size: clamp(1.5rem, 6vw, 2rem);
		letter-spacing: 1px;
		margin-bottom: 10px;
	}

	.grid {
		grid-template-columns: repeat(3, 1fr);
		grid-auto-rows: 80px;
		gap: 8px;
		padding: 8px;
		max-width: 100%;
	}

	/* Nouvelle disposition pour grille 3 colonnes sur mobile */
	.box-1 {
		grid-column: 1 / span 1;
		grid-row: 1 / span 1;
	}
	.box-2 {
		grid-column: 2 / span 1;
		grid-row: 1 / span 1;
	}
	.box-3 {
		grid-column: 3 / span 1;
		grid-row: 1 / span 2;
	}
	.box-4 {
		grid-column: 1 / span 1;
		grid-row: 2 / span 1;
	}
	.box-5 {
		grid-column: 2 / span 1;
		grid-row: 2 / span 1;
	}
	.box-6 {
		grid-column: 1 / span 2;
		grid-row: 3 / span 1;
	}
	.box-7 {
		grid-column: 3 / span 1;
		grid-row: 3 / span 1;
	}
	.box-8 {
		grid-column: 1 / span 1;
		grid-row: 4 / span 1;
	}
	.box-9 {
		grid-column: 2 / span 1;
		grid-row: 4 / span 2;
	}
	.box-10 {
		grid-column: 3 / span 1;
		grid-row: 4 / span 1;
	}
	.box-11 {
		grid-column: 1 / span 1;
		grid-row: 5 / span 1;
	}
	.box-12 {
		grid-column: 3 / span 1;
		grid-row: 5 / span 1;
	}
	.box-13 {
		grid-column: 1 / span 1;
		grid-row: 6 / span 1;
	}
	.box-14 {
		grid-column: 2 / span 2;
		grid-row: 6 / span 1;
	}
	.box-15 {
		grid-column: 1 / span 1;
		grid-row: 7 / span 1;
	}
	.box-16 {
		grid-column: 2 / span 1;
		grid-row: 7 / span 1;
	}
	.box-17 {
		grid-column: 3 / span 1;
		grid-row: 7 / span 1;
	}
	.box-18 {
		grid-column: 1 / span 1;
		grid-row: 8 / span 1;
	}
	.box-19 {
		grid-column: 2 / span 1;
		grid-row: 8 / span 1;
	}
	.box-20 {
		grid-column: 3 / span 1;
		grid-row: 8 / span 1;
	}
	.box-21 {
		grid-column: 1 / span 1;
		grid-row: 9 / span 1;
	}
	.box-22 {
		grid-column: 2 / span 1;
		grid-row: 9 / span 1;
	}
	.box-23 {
		grid-column: 3 / span 1;
		grid-row: 9 / span 1;
	}
	.box-24 {
		grid-column: 1 / span 3;
		grid-row: 10 / span 1;
		font-size: 2.5rem;
	}

	.box {
		font-size: 1.8rem;
		border-radius: 12px;
		border-width: 1.5px;
	}

	.box::after {
		font-size: 0.75rem;
		top: 4px;
		right: 4px;
	}

	.box:hover {
		transform: translateY(-4px) scale(1.03);
	}

	.modal-content {
		padding: 25px 20px;
		max-width: 92%;
		border-radius: 18px;
	}

	.modal-content .close {
		font-size: 1.5rem;
		top: 12px;
		right: 15px;
	}

	.modal-content h2 {
		font-size: 1.3rem;
		margin-bottom: 15px;
	}

	.modal-content p {
		font-size: 0.95rem;
		line-height: 1.5;
	}

	.footer {
		margin-top: 15px;
	}

	.footer p {
		font-size: 0.8rem;
		padding: 0 10px;
		line-height: 1.4;
	}

	.snowflake {
		font-size: 1em;
	}
}

/* Très petits écrans */
@media (max-width: 360px) {
	.grid {
		grid-auto-rows: 70px;
		gap: 6px;
		padding: 6px;
	}

	.box {
		font-size: 1.6rem;
		border-radius: 10px;
	}

	h1 {
		font-size: 1.3rem;
	}

	.modal-content p {
		font-size: 0.9rem;
	}

	.footer p {
		font-size: 0.75rem;
	}
}

/* Écrans larges (desktop) */
@media (min-width: 1200px) {
	.grid {
		max-width: 1000px;
		grid-template-columns: repeat(6, 1fr);
		grid-auto-rows: 110px;
		gap: 15px;
	}

	/* Disposition optimisée pour grands écrans - pas de ligne vide */
	.box-1 {
		grid-column: 1 / span 1;
		grid-row: 1 / span 1;
	}
	.box-2 {
		grid-column: 2 / span 1;
		grid-row: 1 / span 1;
	}
	.box-3 {
		grid-column: 3 / span 2;
		grid-row: 1 / span 1;
	}
	.box-4 {
		grid-column: 5 / span 1;
		grid-row: 1 / span 1;
	}
	.box-5 {
		grid-column: 6 / span 1;
		grid-row: 1 / span 2;
	}
	.box-6 {
		grid-column: 1 / span 1;
		grid-row: 2 / span 1;
	}
	.box-7 {
		grid-column: 2 / span 1;
		grid-row: 2 / span 1;
	}
	.box-8 {
		grid-column: 3 / span 1;
		grid-row: 2 / span 1;
	}
	.box-9 {
		grid-column: 4 / span 1;
		grid-row: 2 / span 1;
	}
	.box-10 {
		grid-column: 5 / span 1;
		grid-row: 2 / span 1;
	}
	.box-11 {
		grid-column: 1 / span 2;
		grid-row: 3 / span 1;
	}
	.box-12 {
		grid-column: 3 / span 1;
		grid-row: 3 / span 2;
	}
	.box-13 {
		grid-column: 4 / span 1;
		grid-row: 3 / span 1;
	}
	.box-14 {
		grid-column: 5 / span 2;
		grid-row: 3 / span 1;
	}
	.box-15 {
		grid-column: 1 / span 1;
		grid-row: 4 / span 1;
	}
	.box-16 {
		grid-column: 2 / span 1;
		grid-row: 4 / span 1;
	}
	.box-17 {
		grid-column: 4 / span 1;
		grid-row: 4 / span 1;
	}
	.box-18 {
		grid-column: 5 / span 1;
		grid-row: 4 / span 1;
	}
	.box-19 {
		grid-column: 6 / span 1;
		grid-row: 4 / span 1;
	}
	.box-20 {
		grid-column: 1 / span 1;
		grid-row: 5 / span 1;
	}
	.box-21 {
		grid-column: 2 / span 1;
		grid-row: 5 / span 1;
	}
	.box-22 {
		grid-column: 3 / span 1;
		grid-row: 5 / span 1;
	}
	.box-23 {
		grid-column: 4 / span 1;
		grid-row: 5 / span 1;
	}
	.box-24 {
		grid-column: 5 / span 2;
		grid-row: 5 / span 1;
		font-size: 4.5rem;
	}

	.box {
		font-size: 2.8rem;
	}

	h1 {
		font-size: 5rem;
	}
}