@font-face {
    font-family: 'TH Christmas Wishes';
    src: url('./font/TH Christmas Wishes.otf') format('opentype');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

body {
    margin: 0;
    overflow: hidden;
    background: linear-gradient(180deg, #ce1e2a 0%, #790116 50%, #420014 100%);
    height: 100vh;
    position: fixed;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Trang trí background trên cùng - định vị theo viewport */

.decor-top-left,
.decor-top-right,
.decor-light-left,
.decor-light-right {
    position: fixed;
    z-index: 6;
    pointer-events: none;
    opacity: 0;
}

.decor-top-left {
    top: -120px;
    left: 0;
    right: auto;
    animation: float-down-left 0.9s ease-out 0.1s forwards;
}

.decor-top-right {
    top: -120px;
    right: 0;
    left: auto;
    text-align: right;
    /* Căn ảnh về bên phải */
    animation: float-down-right 0.9s ease-out 0.18s forwards;
}

.decor-light-left {
    top: 10%;
    left: 0;
    right: auto;
    animation: float-down-left 0.9s ease-out 0.26s forwards;
}

.decor-light-right {
    top: 10%;
    right: 0;
    left: auto;
    text-align: right;
    /* Căn ảnh về bên phải */
    animation: float-down-right 0.9s ease-out 0.34s forwards;
}

.decor-top-left img,
.decor-top-right img {
    max-width: 50%;
    height: auto;
    display: block;
}

.decor-light-left img,
.decor-light-right img {
    max-width: 34%;
    height: auto;
    display: block;
}

/* Đảm bảo ảnh bên phải bám sát góc phải */

.decor-top-right img,
.decor-light-right img {
    margin-left: auto;
    /* Đẩy ảnh về bên phải */
    margin-right: 0;
    /* Bám sát góc phải */
}

/* Intro animations cho trang trí trên cùng */

@keyframes float-down-left {
    from {
        opacity: 0;
        transform: translate(-40px, -30px) scale(0.96);
    }

    to {
        opacity: 1;
        transform: translate(0, 0) scale(1);
    }
}

@keyframes float-down-right {
    from {
        opacity: 0;
        transform: translate(40px, -30px) scale(0.96);
    }

    to {
        opacity: 1;
        transform: translate(0, 0) scale(1);
    }
}

/* Loading Screen */

.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    /* background: linear-gradient(135deg, #000000 0%, #0d0e10 100%); */
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
    transition: opacity 0.5s ease-out;
}

.loading-container {
    text-align: center;
    color: white;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.3);
    border-top: 4px solid #fff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
}

.loading-text {
    font-size: 24px;
    font-weight: bold;
    margin-bottom: 10px;
    font-family: 'Dancing Script', cursive;
    animation: fadeInOut 2s ease-in-out infinite;
}

.loading-subtitle {
    font-size: 16px;
    opacity: 0.8;
    font-family: Arial, sans-serif;
    animation: fadeInOut 2s ease-in-out infinite 0.5s;
}

@keyframes fadeInOut {

    0%,
    100% {
        opacity: 0.6;
    }

    50% {
        opacity: 1;
    }
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

/* Error Screen */

.error-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #f9d1d1 0%, #3e3636 100%);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10000;
}

.error-container {
    text-align: center;
    color: white;
    max-width: 400px;
    padding: 20px;
}

.error-icon {
    font-size: 80px;
    margin-bottom: 20px;
}

.error-title {
    font-size: 28px;
    font-weight: bold;
    margin-bottom: 15px;
    font-family: 'Dancing Script', cursive;
}

.error-message {
    font-size: 16px;
    margin-bottom: 30px;
    line-height: 1.5;
    opacity: 0.9;
    font-family: Arial, sans-serif;
}

.error-button {
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid white;
    color: white;
    padding: 12px 30px;
    border-radius: 25px;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-family: Arial, sans-serif;
}

.error-button:hover {
    background: white;
    color: #ff6b6b;
    transform: translateY(-2px);
}

html {
    overflow: hidden;
    height: 100%;
    width: 100%;
}

canvas {
    display: block;
}

/* Background stars */

.stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

svg {
    width: 90%;
    height: 90%;
    visibility: hidden;
}

.canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
}

/* Book Overlay */

.hidden {
    display: none !important;
    pointer-events: none !important;
}

#guideInfo {
    position: fixed;
    inset: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    background: rgba(0, 0, 0, 0.6);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s ease, visibility 0.4s ease;
    z-index: 3000;
    pointer-events: auto;
}

#guideInfo.hidden {
    pointer-events: none !important;
}

#guideInfo.show {
    opacity: 1;
    visibility: visible;
}

.card {
    color: #013243;
    position: relative;
    width: 30vw;
    height: 45vh;
    letter-spacing: 1px;
    background: #dc2626;
    transform-style: preserve-3d;
    font-family: "Times New Roman", Times, serif;
    transform: perspective(2000px);
    box-shadow: inset 30vw 0 50px rgba(0, 0, 0, 0.5), 20px 0 60px rgba(0, 0, 0, 0.5);
    transition: 1s;
}

.card.book-opened {
    transform: perspective(2000px) rotate(15deg) scale(1.08) translateX(200px);
    box-shadow: inset 20px 0 50px rgba(0, 0, 0, 0.5), 0 10px 100px rgba(0, 0, 0, 0.5);
}

.card:before {
    content: "";
    position: absolute;
    top: -5px;
    left: 0;
    width: 100%;
    height: 5px;
    background: #b91c1c;
    /* đỉnh sách đỏ đậm để đồng bộ với nền */
    transform-origin: bottom;
    transform: skewX(-45deg);
}

.card:after {
    content: "";
    position: absolute;
    top: 0;
    right: -5px;
    width: 5px;
    height: 100%;
    background: #7f1d1d;
    /* gáy sách đỏ sẫm hơn để tạo chiều sâu */
    transform-origin: left;
    transform: skewY(-45deg);
}

.card .imgBox {
    width: 100%;
    height: 100%;
    position: relative;
    transform-origin: left;
    transition: 0.7s;
    overflow: hidden;
}

.card .bark {
    position: absolute;
    background: #e0e1dc;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: 0.7s;
}

.card .imgBox img {
    min-width: 250px;
    max-height: 400px;
}

.card-cover {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.cover-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #B91E24 0%, #8B1519 100%);
    z-index: 1;
}

.moon-container {
    position: relative;
    top: -50px;
    width: 250px;
    height: 250px;
    border-radius: 50%;
    overflow: hidden;
    z-index: 2;
}

.cover-moon {
    position: absolute;
    inset: 0;
    margin: auto;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    background-color: #ffffff;
    box-shadow: 0 0 40px rgba(255, 255, 255, 0.7);
    opacity: 0;
}

.cover-star {
    position: absolute;
    top: -40px;
    left: 0;
    width: 60%;
    height: 60%;
    object-fit: contain;
    object-position: center top;
    z-index: 3;
    opacity: 0;
}

.cover-pinetree {
    position: absolute;
    bottom: -40px;
    left: 45%;
    transform: translateX(-50%);
    width: 80%;
    height: 75%;
    object-fit: contain;
    object-position: center bottom;
    z-index: 4;
    opacity: 0;
}

.cover-reindeer {
    position: absolute;
    top: 5%;
    left: 60%;
    transform: translateX(-50%);
    width: 35%;
    max-width: 350px;
    height: auto;
    z-index: 5;
    opacity: 0;
}

.cover-merrytext {
    position: absolute;
    bottom: 10%;
    left: 50%;
    transform: translateX(-50%);
    width: 20%;
    height: auto;
    z-index: 6;
    filter: brightness(1.2);
    opacity: 0;
}

.cover-christmastext {
    position: absolute;
    bottom: -39%;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: auto;
    z-index: 6;
    filter: brightness(1.2);
    opacity: 0;
}

.card.book-opened .imgBox {
    transform: rotateY(-135deg);
}

.card.book-opened .bark {
    opacity: 1;
    transition: 0.6s;
    box-shadow: 500px 200px 100px rgba(0, 0, 0, 0.4) inset;
}

.card .details {
    position: absolute;
    top: 0;
    left: 0;
    box-sizing: border-box;
    padding: 10px;
    z-index: -1;
    margin-top: 30px;
    width: 100%;
    height: 75%;
    overflow-y: auto;
    overflow-x: hidden;
    scroll-behavior: smooth;
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.card .details::-webkit-scrollbar {
    display: none;
}

.card .details p {
    font-size: 16px;
    line-height: 26px;
    padding: 5px 50px 5px 50px;
    color: #ffffff;
    margin: 0;
    word-wrap: break-word;
    white-space: normal;
    font-family: 'Dancing Script', 'Brush Script MT', 'Lucida Handwriting', cursive;
    font-weight: 500;
    letter-spacing: 0.5px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.card .details p .word-wrapper {
    display: inline-block;
    white-space: nowrap;
}

.card .details p .char {
    display: inline-block;
    will-change: transform, opacity;
}

.card .details p .char-space {
    display: inline-block;
    white-space: pre;
}

.card .details p .word {
    display: inline-block;
    will-change: transform, opacity;
}

.card .details p .word-space {
    display: inline-block;
}

.card .details p .typing-cursor {
    display: inline-block;
    color: #ffffff;
    font-weight: bold;
    margin-left: 1px;
    animation: blink 0.8s infinite;
    vertical-align: baseline;
}

@keyframes blink {

    0%,
    50% {
        opacity: 1;
    }

    51%,
    100% {
        opacity: 0;
    }
}

/* Hiệu ứng xuất hiện cho mặt trăng, sao, cây thông, tuần lộc */

@keyframes moonFadeIn {
    from {
        opacity: 0;
        transform: scale(0.8);
    }

    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes starDrop {
    from {
        opacity: 0;
        transform: translateY(-60px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes treeUp {
    from {
        opacity: 0;
        transform: translate(-50%, 60px);
    }

    to {
        opacity: 1;
        transform: translate(-50%, 0);
    }
}

@keyframes reindeerRun {
    from {
        opacity: 0;
        transform: translateX(-200%);
    }

    to {
        opacity: 1;
        transform: translateX(-50%);
    }
}

@keyframes merryFadeUp {
    from {
        opacity: 0;
        transform: translate(-50%, 20px);
    }

    to {
        opacity: 1;
        transform: translate(-50%, 0);
    }
}

@keyframes christmasFadeUp {
    from {
        opacity: 0;
        transform: translate(-50%, 40px);
    }

    to {
        opacity: 1;
        transform: translate(-50%, 0);
    }
}

/* Kích hoạt hiệu ứng khi overlay sách được mở */

#guideInfo.show .cover-moon {
    animation: moonFadeIn 1s ease-out forwards;
}

#guideInfo.show .cover-star {
    animation: starDrop 1s ease-out forwards;
    animation-delay: 1s;
}

#guideInfo.show .cover-pinetree {
    animation: treeUp 1s ease-out forwards;
    animation-delay: 1.5s;
}

#guideInfo.show .cover-reindeer {
    animation: reindeerRun 3s ease-in-out forwards;
    animation-delay: 2s;
}

#guideInfo.show .cover-merrytext {
    animation: merryFadeUp 1s ease-out forwards;
    animation-delay: 2.5s;
}

#guideInfo.show .cover-christmastext {
    animation: christmasFadeUp 1.2s ease-out forwards;
    animation-delay: 3s;
}

.card .details #messageContent p {
    color: #ffffff;
}

.text-right {
    text-align: right;
}

.star {
    position: absolute;
    background: #ffd700;
    border-radius: 50%;
    animation: twinkle 3s infinite;
}

@keyframes twinkle {

    0%,
    100% {
        opacity: 0.3;
        transform: scale(1);
    }

    50% {
        opacity: 1;
        transform: scale(1.2);
    }
}

/* Flying rabbit with ribbons - Middle left */

.flying-rabbit-section {
    position: fixed;
    bottom: 0;
    left: -50px;
    z-index: 8;
    opacity: 0;
    animation: rise-in-left 1s ease-out 0.2s forwards;
}

.flying-rabbit {
    width: 400px;
    height: 420px;
    animation: fly-around 6s ease-in-out infinite;
}

/* 
@keyframes fly-around {

    0%,
    100% {
        transform: translate(0, 0) rotate(0deg);
    }

    25% {
        transform: translate(20px, -20px) rotate(5deg);
    }

    50% {
        transform: translate(-10px, -30px) rotate(-5deg);
    }

    75% {
        transform: translate(-20px, -10px) rotate(3deg);
    }
} */

/* Traditional woman - Bottom right */

.woman-section {
    position: fixed;
    bottom: 1%;
    right: -1%;
    z-index: 7;
    opacity: 0;
    animation: rise-in-right 1s ease-out 0.35s forwards;
}

.woman {
    width: 350px;
    height: auto;
    animation: gentle-sway 4s ease-in-out infinite;
}

/* 
@keyframes gentle-sway {

    0%,
    100% {
        transform: rotate(-1deg);
    }

    50% {
        transform: rotate(1deg);
    }
} */

.mountain-section {
    position: fixed;
    bottom: -10%;
    z-index: 8;
    left: -70px;
}

.mountain {
    width: 110vw;
    height: 110%;
    /* height: 100%; */
}

.flying-rabbit-section,
.woman-section,
.mountain-section {
    pointer-events: none;
}

/* Intro animations cho nhân vật và background dưới */

@keyframes rise-in-left {
    from {
        opacity: 0;
        transform: translate(-60px, 40px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translate(0, 0) scale(1);
    }
}

@keyframes rise-in-right {
    from {
        opacity: 0;
        transform: translate(60px, 40px) scale(0.95);
    }

    to {
        opacity: 1;
        transform: translate(0, 0) scale(1);
    }
}

@keyframes fade-in-up {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mobile Responsive */

@media (max-width: 768px) {

    /* Book / card trên mobile */
    .card {
        width: 80vw;
        height: 70vh;
        transform: perspective(1600px);
        box-shadow: inset 60vw 0 50px rgba(0, 0, 0, 0.5), 10px 0 40px rgba(0, 0, 0, 0.5);
    }

    /* Trên mobile, khi mở sách không dịch sang phải như laptop */
    .card.book-opened {
        transform: perspective(1600px) rotate(8deg) scale(1.03) translateX(0);
    }

    /* Hover trên mobile (ít khi dùng) vẫn giữ hiệu ứng nhẹ */
    .card:hover {
        transform: perspective(1600px) rotate(10deg) scale(1.03) translateX(10px);
    }

    .card .details {
        margin-top: 40px;
        padding: 0 16px 16px 20px;
        height: 72%;
    }

    .card .details p {
        font-size: 18px;
        line-height: 26px;
        padding: 4px 8px 4px 8px;
    }

    .moon-container {
        top: -20%;
        width: 260px;
        height: 260px;
    }

    .cover-pinetree {
        width: 65%;
    }

    .cover-star {
        width: 90%;
    }

    .cover-reindeer {
        width: 30%;
        top: 8%;
        left: 70%;
    }

    .cover-merrytext {
        width: 80%;
        bottom: 13%;
    }

    .cover-christmastext {
        width: 100%;
        bottom: -20%;
    }

    /* Flying rabbit - thu nhỏ và điều chỉnh */
    .flying-rabbit-section {
        position: fixed;
        left: -8%;
    }

    .flying-rabbit {
        width: 200px;
        height: 230px;
    }

    /* Woman section - thu nhỏ và điều chỉnh vị trí */
    .woman-section {
        position: fixed;
        bottom: 1%;
        right: -10%;
    }

    .woman {
        width: 180px;
        height: auto;
    }

    /* Mountain - thu nhỏ và điều chỉnh */
    .mountain-section {
        position: fixed;
        bottom: -10px;
        left: 50%;
        transform: translateX(-50%);
        z-index: 8;
    }

    .mountain {
        width: 125vw;
        height: auto;
        max-height: 50vh;
        /* Giới hạn chiều cao để không bị quá lớn trên màn hình ngắn */
        object-fit: cover;
        object-position: bottom;
    }

    .decor-top-left,
    .decor-top-right {
        top: -20px;
    }

    .decor-top-left img,
    .decor-top-right img {
        max-width: 65%;
    }

    .decor-light-left img,
    .decor-light-right img {
        max-width: 56%;
    }

    .decor-light-left,
    .decor-light-right {
        top: 6%;
    }

    /* SVG Tree - đẩy lên cao hơn trên mobile */
    .mainSVG {
        transform: translateY(-7%);
        margin-top: -10vh;
    }
}

/* Tablet Responsive */

@media (max-width: 1024px) and (min-width: 769px) {

    /* Book / card trên tablet */
    /* Mountain - thu nhỏ và điều chỉnh */
    .mountain-section {
        position: fixed;
        bottom: -15px;
        left: 50%;
        transform: translateX(-50%);
        z-index: 8;
    }

    .mountain {
        width: 125vw;
        height: auto;
        max-height: 50vh;
        /* Giới hạn chiều cao để không bị quá lớn trên màn hình ngắn */
        object-fit: cover;
        object-position: bottom;
    }

    .decor-top-left,
    .decor-top-right {
        top: -35px;
    }

    /* Trên mobile, khi mở sách không dịch sang phải như laptop */
    .card.book-opened {
        transform: perspective(1600px) rotate(8deg) scale(1.03) translateX(50px);
    }

    .card {
        width: 60vw;
        height: 65vh;
        transform: perspective(1600px);
        box-shadow: inset 60vw 0 50px rgba(0, 0, 0, 0.5), 10px 0 40px rgba(0, 0, 0, 0.5);
    }

    .card .details {
        margin-top: 40px;
        padding: 0 16px 16px 20px;
        height: 72%;
    }

    .card .details p {
        font-size: 18px;
        line-height: 26px;
        padding: 4px 8px 4px 8px;
    }

    .moon-container {
        top: -20%;
        width: 260px;
        height: 260px;
    }

    .cover-pinetree {
        width: 65%;
    }

    .cover-star {
        width: 90%;
    }

    .cover-reindeer {
        width: 30%;
        top: 8%;
        left: 70%;
    }

    .cover-merrytext {
        width: 80%;
        bottom: 18%;
    }

    .cover-christmastext {
        width: 100%;
        bottom: -20%;
    }
}

/* Modal Styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 10001;
    /* Higher than waiting screen */
}

.modal-content.warm-frame {
    position: relative;
    background: #fff8e1;
    /* Warm white/cream */
    padding: 20px;
    border-radius: 15px;
    max-width: 90%;
    max-height: 90%;
    width: auto;
    text-align: center;

    /* Warm Frame Styling */
    border: 8px solid #b91c1c;
    /* Dark red */
    outline: 4px solid #d4af37;
    /* Gold outline */
    box-shadow:
        0 0 0 10px #b91c1c,
        /* Outer red border */
        0 0 50px rgba(255, 215, 0, 0.5),
        /* Golden glow */
        inset 0 0 20px rgba(0, 0, 0, 0.2);
    /* Inset shadow */

    /* Animation */
    animation: modalFadeZoom 0.5s ease-out forwards;
}

.modal-body img {
    max-width: 100%;
    max-height: 60vh;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    margin-bottom: 20px;
    border: 2px solid #d4af37;
}

.modal-body p {
    font-family: 'Dancing Script', cursive;
    font-size: 28px;
    color: #b91c1c;
    margin: 0;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.1);
}

.close-modal {
    position: absolute;
    top: -25px;
    right: -25px;
    background: #b91c1c;
    color: white;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 24px;
    border: 2px solid #d4af37;
    cursor: pointer;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.3);
    transition: transform 0.2s;
    font-family: Arial, sans-serif;
    font-weight: bold;
}

.close-modal:hover {
    transform: scale(1.1);
    background: #FF0000;
}

@keyframes modalFadeZoom {
    0% {
        opacity: 0;
        transform: scale(0.5);
    }

    100% {
        opacity: 1;
        transform: scale(1);
    }
}