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

:root{
    --cream: #f5efe0;
    --checker1: #ede4d0;
    --checker2: #e0d5be;
    --mustard: #e8a020;
    --mustard-dark: #c47f00;
    --mustard-bg: #fdf3d8;
    --brick: #c0392b;
    --brick-bg: #fde8e6;
    --sage: #4a7c59;
    --sage-bg: #e4f0e8;
    --sky: #3a7ebf;
    --sky-bg: #ddeeff;
    --brown: #5c3d1e;
    --text: #3b2a14;
    --muted: #8a7055;
    --radius: 16px;
}

body{
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: 40px 16px 60px;
    background-color: var(--cream);
    background-image: 
        linear-gradient(45deg,var(--checker1)25%,transparent 25%),
        linear-gradient(-45deg,var(--checker1)25%,transparent 75%),
        linear-gradient(45deg,transparent 75%,var(--checker2)75%),
        linear-gradient(-45deg, transparent 75%,var(--checker2) 75%);
    background-size: 40px 40px;
    background-position: 0 0, 0 20px, 20px -20px, -20px 0;
    font-family: 'Nunito',sans-serif;
    color: var(--text);
}

.page-title{
    font-family: 'Fredoka One', cursive;
    font-size: 30px;
    color: #fff;
    background: var(--brown);
    padding: 13px 38px;
    border-radius: 50px;
    margin-bottom: 32px;
    box-shadow: 0 4px 0 #3a2005,0 6px 18px rgba(0,0,0,0.15);
    text-align: center;
    letter-spacing: 0.4px;
}

.card {
    width: 100%;
    max-width: 540px;
    background: var(--cream);
    border: 3px solid var(--checker2);
    border-radius: 24px;
    padding: 32px 26px;
    box-shadow: 0 6px 0 #cbbfa5,0 12px 32px rgba(0,0,0,0.12);
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.section{
    position:relative;
    border-radius: var(--radius);
    padding:22px 18px 18px;
}

.section-label{
    position:absolute;
    top:-15px;
    left:16px;
    font-family:'Fredoka One',cursive;
    font-size: 16px;
    padding:4px 16px;
    border-radius: 100px;
    line-height: 1.5;
    letter-spacing: 0.3px;
}

.block-mustard{
    background: var(--mustard-bg);
    border: 2.5px solid var(--mustard);
}
.block-mustard .section-label{
    background: var(--mustard);
    color: #fff;
}
.block-brick{
    background:var(--brick-bg);
    border: 2.5px solid var(--brick);
}
.block-brick .section-label{
    background: var(--brick);
    color: #fff;
}
.block-sage{
    background: var(--sage-bg);
    border: 2.5px solid var(--sage);
}
.block-sage .section-label{
    background: var(--sage);
    color: #fff;
}
.block-sky{
    background: var(--sky-bg);
    border: 2.5px solid var(--sky);
}
.block-sky .section-label{
    background: var(--sky);
    color: #fff;
}
input[type="text"]{
    width: 100%;
    margin-top: 6px;
    padding: 13px 16px;
    border-radius: 12px;
    border: 2.5px solid var(--mustard);
    background: #fffdf6;
    font-family: 'Nunito',sans-serif;
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    outline: none;
    transition: border-color 0.2s,box-shadow 0.2s;
}
input[type="text"]::placeholder{
    color: #c4a97a;
    font-weight: 500;
}
input[type="text"]:focus{
    border-color: var(--mustard-dark);
    box-shadow: 0 0 0 3px rgba(232,160,32,0.22);
}
.hint{
    font-size: 12px;
    font-weight: 600;
    color: var(--muted);
    margin-top: 9px;
}
.chip-row{
    display:flex;
    gap: 10px;
    flex-wrap:wrap;
    margin-top:6px;
}
.chip{
    padding: 7px 18px;
    border-radius: 100px;
    border: 2.5px solid var(--brick);
    background: transparent;
    font-family:'Nunito',sans-serif;
    font-size: 13px;
    font-weight: 700;
    color: var(--brick);
    cursor: pointer;
    transition: all 0.15s;
}
.chip.active,.chip:hover{
    background: var(--brick);
    color: #fff;
}
.btn-generate{
    width: 100%;
    padding: 15px;
    border: none;
    border-radius: 14px;
    font-family: 'Fredoka One',cursive;
    font-size: 20px;
    letter-spacing: 0.4px;
    color: #fff;
    background:var(--sage);
    cursor: pointer;
    box-shadow: 0 4px 0 #2e5438, 0 6px 16px rgba(0,0,0,0.14);
    transition: transform 0.12s , box-shadow 0.12s;
}
.btn-generate:hover {
    transform : translateY(-2px);
    box-shadow: 0 6px 0 #2e5438, 0 10px 22px rgba(0,0,0,0.18);
}
.btn-generate:active{
    transform: translateY(2px);
    box-shadow: 0 2px 0 #2e5438;
}
.error-msg{
    display: none;
    font-size: 12px;
    font-weight: 700;
    color: var(--brick);
    margin-top:7px;
}
.error-msg.show{
    display: block;
}
#qr-section{
    opacity: 0;
    transform: translateY(10px) scale(0.97);
    transition: opacity 0.4s ease, transform 0.4s ease;
    pointer-events: none;
    visibility: hidden;
    display: none;
}
#qr-section.show{
    opacity: 1;
    transform: none;
    pointer-events: auto;
    visibility: visible;
    display: block;
}
.qr-inner{
    display: flex;
    flex-direction : column;
    align-items: center;
    gap: 16px;
    padding-top: 6px;
}
.qr-frame{
    background: white;
    border: 3px dashed var(--sky);
    border-radius: 18px;
    padding: 16px;
    box-shadow:0 4px 0 #1f5a99, 0 8px 22px rgba(0,0,0,0.1);
    position: relative;
}

.qr-frame::before, .qr-frame::after {
    content: '✦';
    position:absolute;
    font-size: 13px;
    color: var(--sky);
    line-height: 1;
}
.qr-frame::before{
    top: 7px;
    left:9px;
}
.qr-frame::after{
    bottom:7px;
    right:9px;
}
#qr-img{
    display: block;
    border-radius: 8px;
    image-rendering: pixelated;
    width: 200px;
    height: 200px;
    object-fit: contain;
    background: #f8f8f8;
    transition: opacity 0.3s;
}
#qr-img.loading{
    opacity: 0.3;
}
.qr-status{
    font-size: 12px;
    font-weight: 700;
    min-height: 18px;
    color: var(--muted);
    text-align: center;
}
.qr-status.error{
    color: var(--brick);
}
.encoded-label{
    font-size: 11px;
    font-weight:700;
    color: var(--muted);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}
.encoded-value{
    font-size: 13px;
    font-weight: 700;
    color: var(--sky);
    max-width: 340px;
    overflow: hidden;
    text-overflow:ellipsis;
    white-space: nowrap;
    text-align: center;
}
.btn-download{
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    border: 2.5px solid var(--mustard);
    border-radius: 100px;
    background: var(--mustard-bg);
    font-family: 'Nunito',sans-serif;
    font-size: 13px;
    font-weight: 800;
    color: var(--mustard-dark);
    cursor: pointer;
    box-shadow: 0 3px 0 var(--mustard);
    transition: all 0.15s;
}
.btn-download:hover{
    background: var(--mustard);
    color: #fff;
    box-shadow: 0 3px 0 var(--mustard-dark);

}
.btn-download:active{
    transform: translateY(2px);
    box-shadow: none;
}
.btn-download svg{
    width: 14px;
    height: 14px;
}
.footer{
    margin-top: 26px;
    font-size: 12px;
    font-weight: 700;
    color: var(--muted);
    text-align: center;
    letter-spacing: 0.04em;
}