@import url('https://fonts.googleapis.com/css2?family=Coiny&family=Titan+One&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Nerko+One&family=Sriracha&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Dancing+Script:wght@700&display=swap');
* {
    padding: 0;
    margin: 0;
    box-sizing: border-box;
}

:root {
    --color-pink: #feecea;
    --color-white: #fff;
    --color-black: #333;
    --color-text-pink: #ff7882;
    --color-heart: #f61f1f;
    --color-bg-letter: #fff8e4;
    --color-border: #DACCBF;
}

html {
    height: 100%;
}

body {
    position: relative;
    font-size: 16px;
    margin: 0;
    padding: 0;
    min-height: 100%;
    background-image: linear-gradient(var(--color-pink), var(--color-pink));
    overflow-x: hidden;
}

#wrapper {
    position: relative;
    background-color: transparent;
    background-image: linear-gradient(0deg, transparent 24%, rgba(255, 255, 255, 1) 25%, rgba(255, 255, 255, 1) 26%, transparent 27%, transparent 74%, rgba(255, 255, 255, 1) 75%, rgba(255, 255, 255, 1) 76%, transparent 77%, transparent), linear-gradient(90deg, transparent 24%, rgba(255, 255, 255, 1) 25%, rgba(255, 255, 255, 1) 26%, transparent 27%, transparent 74%, rgba(255, 255, 255, 1) 75%, rgba(255, 255, 255, 1) 76%, transparent 77%, transparent);
    min-height: 100vh;
    background-size: 80px 80px;
    overflow-x: hidden;
    z-index: 1;
}


/* ── FLAG ────────────────────────────────────────────── */

.flag__birthday {
    display: flex;
    justify-content: space-between;
    transform: translateY(-200px);
    animation: translateYFlag 1.5s 2s forwards;
}

@keyframes translateYFlag {
    to {
        transform: translateY(-10px);
    }
}

.flag__birthday .flag__left {
    transform: rotate(-10deg) translate(-20px, 30px);
}

.flag__birthday .flag__right {
    transform: rotate(10deg) translate(20px, 30px) scaleX(-1);
}


/* ── CONTENT LAYOUT ──────────────────────────────────── */

.content {
    width: 100%;
    position: relative;
    display: flex;
    padding-top: 3rem;
}

.content .left,
.content .right {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.content .left {
    width: 40%;
    padding-left: 100px;
}

.content .right {
    width: 60%;
}


/* ── BUTTON ──────────────────────────────────────────── */

.left .btn {
    transform: scale(0);
    animation: scaleCricle 2s 16s forwards ease-in-out;
}

#btn__letter {
    position: relative;
    margin-top: 30px;
    background-color: var(--color-text-pink);
    outline: none;
    padding: 5px 15px;
    font-size: 1rem;
    border-radius: 50px;
    border: 3px solid var(--color-black);
    font-family: "Sriracha", cursive;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 2;
    transform: scale(1);
    transition: all .5s ease-in-out;
}

#btn__letter:active {
    transform: scale(0.7);
}

#btn__letter i {
    margin-left: 5px;
}

#btn__letter:hover {
    border-color: var(--color-heart);
    background-color: var(--color-heart);
    color: #fff;
    box-shadow: rgba(0, 0, 0, 0.24) 0px 3px 8px;
}

#btn__letter:hover i {
    animation: rotateHeart 1s infinite linear;
}

@keyframes rotateHeart {
    0%,
    50%,
    100% {
        transform: rotate(0deg);
    }
    25% {
        transform: rotate(12deg);
    }
    75% {
        transform: rotate(-12deg);
    }
}


/* ── TITLE ───────────────────────────────────────────── */

.title {
    position: relative;
    width: 100%;
    display: flex;
    justify-content: center;
    font-family: "Titan One", sans-serif;
    font-size: 3rem;
    flex-direction: column;
    perspective: 1000px;
}

.title .happy,
.title .birthday {
    position: relative;
    text-shadow: 4px 4px var(--color-black), -4px 4px var(--color-black), 4px -4px var(--color-black), -4px -4px var(--color-black), 4px 8px 0 var(--color-black);
    font-weight: bold;
    display: flex;
    justify-content: center;
}

.title .happy {
    color: var(--color-white);
}

.title .happy span,
.title .birthday span {
    transform: translateY(50px);
    opacity: 0;
    visibility: hidden;
    animation: txtTranslateY .5s var(--t) forwards;
}

@keyframes txtTranslateY {
    100% {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
}

.title .birthday {
    color: var(--color-text-pink);
}

.title .hat {
    position: absolute;
    right: 45px;
    top: -350px;
    transform: rotate(-40deg);
    z-index: -1;
    animation: topHat 4s 7s forwards ease;
}

@keyframes topHat {
    20%,
    30% {
        top: -30px;
        transform-origin: left;
        transform: rotate(-40deg);
    }
    35%,
    100% {
        top: -30px;
        transform: rotate(0deg);
    }
}


/* ── DATE OF BIRTH ───────────────────────────────────── */

.date__of__birth,
.name {
    display: flex;
    justify-content: space-around;
    align-items: center;
    background-color: var(--color-text-pink);
    border-radius: 50px;
    margin-top: 20px;
    font-family: "Sriracha", cursive;
}

.date__of__birth {
    border: 3px solid var(--color-black);
    position: relative;
    transform: translateY(-100px);
    z-index: -1;
    opacity: 0;
    visibility: hidden;
    width: 0px;
    animation: dateOfBirth 5s 9s forwards;
}

@keyframes dateOfBirth {
    20%,
    40% {
        width: 0px;
        height: 0;
        transform: translateY(0px);
        opacity: 1;
        visibility: visible;
    }
    45% {
        transform: translateY(0px);
        opacity: 1;
        visibility: visible;
        width: 300px;
        height: 0px;
    }
    50%,
    100% {
        transform: translateY(0px);
        opacity: 1;
        visibility: visible;
        width: 300px;
        height: 50px;
    }
}

.name {
    position: absolute;
    padding: 0px 40px;
    bottom: -20px;
    border: 3px solid var(--color-black);
}

.date__of__birth span,
.name span {
    font-weight: bold;
    margin: 0px 40px;
}

.date__of__birth span {
    font-size: 1.2rem;
}

.name span {
    font-size: 1.7rem;
}


/* ── PROFILE IMAGE ───────────────────────────────────── */

.right .box__account {
    position: relative;
    transform: translateY(700px);
    animation: topBoxImage 8s 7s forwards ease-in;
}

@keyframes topBoxImage {
    to {
        transform: translateY(0);
    }
}

.content .right .image {
    position: relative;
    width: 400px;
    height: 400px;
    border-radius: 50%;
    overflow: hidden;
    display: flex;
    align-items: center;
    border: 6px solid var(--color-black);
}

.content .right .image img {
    width: 100%;
    object-fit: cover;
}


/* ── CIRCLE TEXT ─────────────────────────────────────── */

.cricle {
    position: absolute;
    top: 20px;
    right: 50px;
    display: flex;
    justify-content: center;
    align-items: center;
    transform: scale(0);
    animation: scaleCricle 3s 15s forwards ease-in-out;
}

@keyframes scaleCricle {
    0% {
        transform: scale(0);
    }
    10% {
        transform: scale(1.3);
    }
    20% {
        transform: scale(0.7);
    }
    30%,
    100% {
        transform: scale(1);
    }
}

.text__cricle {
    width: 100px;
    height: 100px;
    background-color: var(--color-text-pink);
    border-radius: 50%;
    border: 5px solid var(--color-black);
    display: flex;
    justify-content: center;
    align-items: center;
    animation: rotateCricle 5s linear infinite;
}

@keyframes rotateCricle {
    to {
        transform: rotate(360deg);
    }
}

.text__cricle span {
    top: 0%;
    left: 50%;
    position: absolute;
    color: var(--color-black);
    transform: rotate(calc(var(--i) * 24deg));
    transform-origin: 0 45px;
    font-family: "Sriracha", cursive;
    text-transform: uppercase;
    font-size: 0.7rem;
}


/* ── HEARTS ──────────────────────────────────────────── */

.fa-heart {
    color: var(--color-heart);
    filter: drop-shadow(0 0 3px var(--color-heart));
    animation: scaleHeart 1s infinite linear;
}

.cricle .fa-heart {
    position: absolute;
    transform: scale(0.85);
}

@keyframes scaleHeart {
    50% {
        transform: scale(1.2);
    }
}


/* ── BALLOONS ────────────────────────────────────────── */

.right .balloon_one {
    position: absolute;
    top: -70px;
    left: -70px;
    animation: balloon1 2s infinite linear;
}

@keyframes balloon1 {
    0%,
    50%,
    100% {
        transform-origin: bottom right;
        transform: rotate(0deg);
    }
    25% {
        transform-origin: bottom right;
        transform: rotate(3deg);
    }
    75% {
        transform-origin: bottom right;
        transform: rotate(-3deg);
    }
}

.right .balloon_two {
    position: absolute;
    top: 170px;
    right: -65px;
    z-index: -1;
    transform: rotate(10deg);
    animation: balloon2 2s infinite linear;
}

@keyframes balloon2 {
    0%,
    50%,
    100% {
        transform-origin: bottom left;
        transform: rotate(10deg);
    }
    25% {
        transform-origin: bottom left;
        transform: rotate(7deg);
    }
    75% {
        transform-origin: bottom left;
        transform: rotate(13deg);
    }
}


/* ── DECORATIONS ─────────────────────────────────────── */

.decorate_star {
    position: absolute;
    transform: scale(0);
    background-color: var(--color-black);
    clip-path: polygon(0 50%, 35% 35%, 50% 0, 65% 35%, 100% 50%, 65% 65%, 50% 100%, 35% 65%);
    animation: scaleCricle 3s var(--t) forwards, scaleStar 2s 16s infinite ease-in-out;
}

.decorate_star.star1 {
    width: 20px;
    height: 20px;
    top: 75px;
    left: 300px;
}

.decorate_star.star2 {
    width: 15px;
    height: 20px;
    top: 35px;
    right: 360px;
}

.decorate_star.star3 {
    width: 14px;
    height: 14px;
    top: 290px;
    left: 630px;
}

.decorate_star.star4 {
    width: 18px;
    height: 18px;
    bottom: 60px;
    left: 35px;
}

.decorate_star.star5 {
    width: 16px;
    height: 18px;
    bottom: 140px;
    left: 500px;
}

@keyframes scaleStar {
    25% {
        transform: scale(0.8);
    }
    50% {
        transform: scale(1.1);
    }
}

.decorate_bottom {
    position: absolute;
    right: 0;
    bottom: -10px;
}

.decorate_flower--one {
    position: absolute;
    top: 250px;
    left: 50px;
    transform: scale(0);
    animation: scaleCricle 3s var(--t) forwards ease-in-out;
}

.decorate_flower--two {
    position: absolute;
    top: 225px;
    left: 540px;
    transform: scale(0);
    animation: scaleCricle 3s var(--t) forwards ease-in-out;
}

.decorate_flower--three {
    position: absolute;
    top: 150px;
    right: 235px;
    transform: scale(0);
    animation: scaleCricle 3s var(--t) forwards ease-in-out;
}

.smiley__icon {
    position: absolute;
    bottom: 180px;
    left: 600px;
    transform: scale(0);
    animation: scaleCricle 3s 15s forwards ease-in-out;
}


/* ══════════════════════════════════════════════════════
   MODAL / LETTER BOX
   ══════════════════════════════════════════════════════ */

.box__letter {
    position: fixed;
    top: 0;
    left: 0;
    background-color: rgba(0, 0, 0, .5);
    width: 100%;
    height: 100%;
    z-index: 10;
    display: none;
    /* centre the inner card */
    justify-content: center;
    align-items: center;
    overflow-y: auto;
    /* allow scroll on very small heights */
    padding: 16px;
}

.box__letter .letter__border {
    position: relative;
    /* NOT absolute – let flexbox centre it */
    width: min(55vw, 620px);
    max-height: 90vh;
    /* never taller than the viewport */
    overflow-y: auto;
    background-color: var(--color-white);
    border-radius: 27px;
    padding: 17px;
    box-shadow: rgba(0, 0, 0, 0.24) 0px 3px 8px;
    /* remove the old translate(-50%,-50%) trick */
    top: unset;
    left: unset;
    transform: none;
    display: none;
}

.letter__border .close {
    position: absolute;
    right: -10px;
    top: -10px;
    width: 30px;
    height: 30px;
    background-color: var(--color-white);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: rgba(99, 99, 99, 0.2) 0px 2px 8px 0px;
    cursor: pointer;
    z-index: 20;
}

.letter__border .letter {
    width: 100%;
    height: 100%;
    background-color: var(--color-bg-letter);
    border-radius: 10px;
    padding-top: 15px;
}

.letter__border .letter .title__letter {
    text-align: center;
    font-family: 'Dancing Script', cursive;
    font-weight: bold;
    font-size: 2.4rem;
}

.title__letter .fa-solid {
    margin-left: 5px;
    font-size: 1.3rem;
}

.letter__border .letter .content__letter {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    padding-top: 1.5rem;
    padding-bottom: 70px;
}

.letter__border .letter .content__letter .left {
    position: relative;
    width: 50%;
    height: 100%;
    padding: 1.7rem;
    border-right: 3px solid var(--color-border);
}

.content__letter .left #heart__letter {
    opacity: 0;
    width: 100%;
}

#heart__letter.animationOp {
    animation: opacityHeart 1s 1s forwards;
}

@keyframes opacityHeart {
    to {
        opacity: 1;
    }
}

.content__letter .left .heart {
    position: absolute;
    opacity: 0;
}

.content__letter .left .heart.animation {
    animation: scaleHeartLetter 1s var(--t) infinite ease-in-out;
}

@keyframes scaleHeartLetter {
    0% {
        opacity: 1;
        transform: scale(0);
    }
    10% {
        opacity: 1;
        transform: scale(1.3);
    }
    20% {
        opacity: 1;
        transform: scale(0.7);
    }
    30%,
    100% {
        opacity: 1;
        transform: scale(1);
    }
}

.content__letter .left .heart_1 {
    top: 90px;
    left: 30px;
}

.content__letter .left .heart_2 {
    top: 20px;
    right: 70px;
}

.content__letter .left .heart_3 {
    bottom: 50px;
    left: 145px;
}

.content__letter .left .heart_4 {
    top: 140px;
    right: 35px;
}

.content__letter .right {
    position: relative;
    width: 50%;
}

.content__letter .right .love__img {
    opacity: 0;
    position: absolute;
    right: 20px;
    top: -100px;
}

.love__img.animationOp {
    animation: opacityHeart 1s 1s forwards;
}

.content__letter .right .text__letter {
    margin-top: 60px;
    padding: 20px 15px 10px 15px;
    font-family: 'Dancing Script', cursive;
    font-size: 1.3rem;
}

.content__letter .right #mewmew {
    position: absolute;
    bottom: 0;
    right: 0;
    opacity: 0;
}

#mewmew.animationOp {
    animation: opacityHeart 1s 1s forwards;
}


/* ══════════════════════════════════════════════════════
   MOBILE  – iPhone 13 normal ≈ 390 × 844
   ══════════════════════════════════════════════════════ */

@media screen and (max-width: 480px) {
    /* flags */
    .flag__birthday img {
        width: 200px !important;
    }
    .flag__birthday .flag__left {
        transform: rotate(-10deg) translate(-40px, 10px);
    }
    .flag__birthday .flag__right {
        transform: rotate(10deg) translate(40px, 10px) scaleX(-1);
    }
    /* main layout – stack vertically */
    .content {
        flex-direction: column;
        align-items: center;
        padding-top: 1.5rem;
        gap: 20px;
    }
    .content .left {
        width: 100%;
        padding-left: 0;
        align-items: center;
    }
    .content .right {
        width: 100%;
    }
    /* title */
    .title {
        font-size: 2rem;
        letter-spacing: 4px;
    }
    /* hat */
    .title .hat {
        right: 10px;
        top: -250px !important;
    }
    .title .hat img {
        width: 80px !important;
    }
    /* date badge */
    @keyframes dateOfBirth {
        20%,
        40% {
            width: 0px;
            height: 0;
            transform: translateY(0);
            opacity: 1;
            visibility: visible;
        }
        45% {
            width: 220px;
            height: 0px;
            transform: translateY(0);
            opacity: 1;
            visibility: visible;
        }
        50%,
        100% {
            width: 220px;
            height: 44px;
            transform: translateY(0);
            opacity: 1;
            visibility: visible;
        }
    }
    /* profile circle */
    .content .right .image {
        width: 220px;
        height: 220px;
    }
    /* name badge */
    .name {
        padding: 0 12px;
        bottom: -14px;
    }
    .name span {
        font-size: 1rem;
        margin: 0 10px;
    }
    /* balloons */
    .right .balloon_one {
        top: -50px;
        left: -55px;
    }
    .right .balloon_one img {
        width: 65px !important;
    }
    .right .balloon_two {
        top: 120px;
        right: -45px;
    }
    .right .balloon_two img {
        width: 65px !important;
    }
    /* circle text badge */
    .cricle {
        top: 5px;
        right: -40px;
    }
    .text__cricle {
        width: 80px;
        height: 80px;
    }
    .text__cricle span {
        font-size: 0.55rem;
        transform-origin: 0 36px;
    }
    /* decorations – hide off-screen ones, keep flowers */
    .decorate_star.star1 {
        left: 60px;
    }
    .decorate_star.star2 {
        right: 60px;
    }
    .decorate_star.star3 {
        left: auto;
        right: 20px;
        top: 160px;
    }
    .decorate_star.star4 {
        left: 15px;
    }
    .decorate_star.star5 {
        left: 50%;
    }
    .decorate_flower--two {
        left: 60%;
        top: 200px;
    }
    .decorate_flower--three {
        right: 20px;
        top: 100px;
    }
    .smiley__icon {
        left: auto;
        right: 10px;
        bottom: 100px;
    }
    .smiley__icon img {
        width: 60px !important;
    }
    .decorate_bottom img {
        width: 60px !important;
    }
    /* ── MODAL on mobile ─────────────────────────────── */
    .box__letter {
        padding: 12px;
        align-items: flex-start;
        /* allow top-scroll on very short modals */
        padding-top: max(12px, env(safe-area-inset-top));
    }
    .box__letter .letter__border {
        width: 100%;
        max-height: calc(100vh - 40px);
        border-radius: 18px;
        padding: 12px;
    }
    .letter__border .letter .title__letter {
        font-size: 1.4rem;
    }
    /* stack letter sections vertically on phone */
    .letter__border .letter .content__letter {
        flex-direction: column;
        padding-bottom: 40px;
        padding-top: 0.5rem;
    }
    .letter__border .letter .content__letter .left {
        width: 100%;
        border-right: none;
        border-bottom: 2px solid var(--color-border);
        padding: 0.8rem;
        height: auto;
    }
    .content__letter .left #heart__letter {
        width: 100%;
        max-width: 180px;
        display: block;
        margin: 0 auto;
    }
    .content__letter .left .heart_1 {
        top: 20px;
        left: 10px;
    }
    .content__letter .left .heart_2 {
        top: 5px;
        right: 10px;
    }
    .content__letter .left .heart_3 {
        bottom: 10px;
        left: 60%;
    }
    .content__letter .left .heart_4 {
        top: 50px;
        right: 10px;
    }
    .content__letter .right {
        width: 100%;
        padding: 0.5rem;
    }
    .content__letter .right .love__img {
        position: relative;
        top: auto;
        right: auto;
        opacity: 0;
        display: flex;
        justify-content: center;
        margin-bottom: 8px;
    }
    .content__letter .right .love__img img {
        width: 120px !important;
    }
    .content__letter .right .text__letter {
        margin-top: 8px;
        font-size: 0.95rem;
        padding: 10px 10px 8px 10px;
    }
    .content__letter .right #mewmew {
        position: relative;
        bottom: auto;
        right: auto;
        display: block;
        margin: 8px auto 0;
        width: 60px !important;
    }
}


/* ── tablets 481-768 ─────────────────────────────────── */

@media screen and (min-width: 481px) and (max-width: 768px) {
    .content {
        flex-direction: column;
        align-items: center;
        padding-top: 2rem;
        gap: 20px;
    }
    .content .left {
        width: 100%;
        padding-left: 0;
    }
    .content .right {
        width: 100%;
    }
    .title {
        font-size: 2.5rem;
    }
    .content .right .image {
        width: 300px;
        height: 300px;
    }
    .box__letter .letter__border {
        width: 88vw;
        max-height: 90vh;
    }
    .letter__border .letter .content__letter {
        flex-direction: column;
        padding-bottom: 50px;
    }
    .letter__border .letter .content__letter .left {
        width: 100%;
        border-right: none;
        border-bottom: 2px solid var(--color-border);
    }
    .content__letter .right {
        width: 100%;
    }
    .content__letter .right .love__img {
        position: relative;
        top: auto;
        right: auto;
        opacity: 0;
    }
    .content__letter .right #mewmew {
        position: relative;
        bottom: auto;
        right: auto;
    }
}