* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    background: var(--paper);
    color: var(--ink);
    font-family: "Nunito", system-ui, sans-serif;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

body::after {
    content: "";
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    opacity: 0.16;
    mix-blend-mode: multiply;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

.storybook-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
    overflow: hidden;
}
.storybook-bg svg {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: auto;
}

header,
nav,
main,
footer,
#toTop {
    position: relative;
    z-index: 1;
}
header {
    z-index: 50;
}
nav.sticky-safe {
    z-index: 40;
}
#toTop {
    z-index: 60;
}

.font-display {
    font-family: "Baloo 2", "Fredoka", system-ui, sans-serif;
}

.c-yellow {
    --c: var(--yellow);
}
.c-red {
    --c: var(--red);
}
.c-blue {
    --c: var(--blue);
}
.c-pink {
    --c: var(--pink);
}
.c-green {
    --c: var(--green);
}
.c-purple {
    --c: var(--purple);
}
.c-orange {
    --c: var(--orange);
}
.c-amber {
    --c: var(--amber);
}
.c-teal {
    --c: var(--teal);
}
.c-lime {
    --c: var(--lime);
}
.c-slate {
    --c: var(--slate);
}

.book-card {
    position: relative;
    display: block;
    color: var(--ink);
    background: radial-gradient(120% 140% at 20% 10%, rgba(255, 255, 255, 0.6), transparent 55%),
        linear-gradient(160deg, color-mix(in srgb, var(--c) 55%, #fff) 0%, var(--c) 100%);
    border: 3px solid var(--ink);
    border-radius: 26px 22px 28px 20px;
    padding: 18px;
    box-shadow:
        4px 5px 0 0 var(--ink),
        0 10px 18px rgba(74, 53, 36, 0.12);
    transform: rotate(var(--rot, 0deg));
    transition:
        transform 0.22s cubic-bezier(0.34, 1.6, 0.5, 1),
        box-shadow 0.22s ease;
}
.book-card::before {
    content: "";
    position: absolute;
    inset: 0;
    border-radius: inherit;
    pointer-events: none;
    opacity: 0.14;
    mix-blend-mode: multiply;
    z-index: 0;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='c'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23c)'/%3E%3C/svg%3E");
}
.book-card > * {
    position: relative;
    z-index: 1;
}
.book-card:nth-child(4n + 1) {
    --rot: -1.4deg;
}
.book-card:nth-child(4n + 2) {
    --rot: 1deg;
}
.book-card:nth-child(4n + 3) {
    --rot: -0.6deg;
}
.book-card:nth-child(4n) {
    --rot: 1.3deg;
}
.book-card:hover {
    transform: translateY(-7px) rotate(0deg) scale(1.025);
    box-shadow:
        5px 8px 0 0 var(--ink),
        0 16px 26px rgba(74, 53, 36, 0.2);
}
.book-card:focus-visible {
    outline: 3px dashed var(--ink);
    outline-offset: 4px;
}

.ico {
    width: 50px;
    height: 50px;
    display: grid;
    place-items: center;
    font-size: 25px;
    background: #fffdf5;
    border: 3px solid var(--ink);
    border-radius: 50% 48% 52% 50%;
    box-shadow: 2px 2px 0 var(--ink);
    margin-bottom: 12px;
}
.card-title {
    font-family: "Baloo 2", sans-serif;
    font-weight: 700;
    font-size: 1.12rem;
    line-height: 1.1;
}
.card-desc {
    font-size: 0.8rem;
    margin-top: 4px;
    color: var(--ink-soft);
    font-weight: 600;
}

.sticker {
    position: absolute;
    top: -11px;
    right: -9px;
    z-index: 3;
    font-family: "Baloo 2", sans-serif;
    font-weight: 700;
    font-size: 11px;
    letter-spacing: 0.01em;
    color: var(--ink);
    background: var(--sticker, #fffdf5);
    border: 2.5px solid var(--ink);
    border-radius: 14px 12px 15px 11px;
    padding: 3px 10px;
    box-shadow: 2px 2px 0 var(--ink);
    transform: rotate(7deg);
}

.cat-head {
    display: flex;
    align-items: center;
    gap: 13px;
    margin-bottom: 18px;
}
.cat-coin {
    width: 56px;
    height: 56px;
    flex: 0 0 auto;
    display: grid;
    place-items: center;
    font-size: 28px;
    background: radial-gradient(120% 140% at 25% 15%, rgba(255, 255, 255, 0.6), transparent 55%), var(--c);
    border: 3px solid var(--ink);
    border-radius: 30% 70% 62% 38% / 45% 38% 62% 55%;
    box-shadow: 3px 3px 0 var(--ink);
}
.cat-eyebrow {
    font-family: "Baloo 2", sans-serif;
    font-size: 11px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--ink-soft);
    font-weight: 600;
}
.cat-title {
    font-family: "Baloo 2", sans-serif;
    font-weight: 800;
    font-size: 1.8rem;
    line-height: 1;
}
.cat-tag {
    font-family: "Baloo 2", sans-serif;
    font-weight: 700;
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    background: var(--c);
    color: var(--ink);
    border: 2.5px solid var(--ink);
    border-radius: 999px;
    padding: 5px 13px;
    box-shadow: 2px 2px 0 var(--ink);
    transform: rotate(-2deg);
}
.cat-rule {
    flex: 1 1 auto;
    height: 0;
    border-top: 3px dashed var(--ink);
    opacity: 0.35;
    border-radius: 3px;
}

.no-scrollbar {
    -ms-overflow-style: none;
    scrollbar-width: none;
}
.no-scrollbar::-webkit-scrollbar {
    display: none;
}

.pill {
    flex: 0 0 auto;
    white-space: nowrap;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    font-family: "Baloo 2", sans-serif;
    font-weight: 700;
    font-size: 0.76rem;
    color: var(--ink);
    background: #fffdf5;
    border: 2.5px solid var(--c);
    border-radius: 999px;
    padding: 6px 11px;
    box-shadow: 3px 3px 0 0 color-mix(in srgb, var(--c) 70%, var(--ink));
    transition:
        transform 0.14s ease,
        box-shadow 0.14s ease,
        background-color 0.14s ease;
}
.pill:hover {
    transform: translateY(-2px) rotate(-1deg);
    box-shadow: 4px 5px 0 0 color-mix(in srgb, var(--c) 70%, var(--ink));
}
.pill:focus-visible {
    outline: 3px dashed var(--ink);
    outline-offset: 3px;
}
.pill.is-active {
    background: var(--c);
    border-color: var(--ink);
    box-shadow: 2px 2px 0 0 var(--ink);
    transform: translateY(0) rotate(0deg);
}
.pill-ico {
    font-size: 1rem;
}
.pill .pill-txt {
    transition: opacity 0.15s ease;
}

#toTop {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 58px;
    height: 58px;
    display: grid;
    place-items: center;
    font-size: 24px;
    line-height: 1;
    color: var(--ink);
    background: radial-gradient(120% 140% at 25% 15%, rgba(255, 255, 255, 0.6), transparent 55%), var(--sun);
    border: 3px solid var(--ink);
    border-radius: 42% 58% 45% 55% / 55% 45% 58% 42%;
    box-shadow: 4px 4px 0 var(--ink);
    cursor: pointer;
    opacity: 0;
    transform: translateY(14px);
    pointer-events: none;
    transition:
        opacity 0.3s ease,
        transform 0.3s ease,
        box-shadow 0.14s ease;
}
#toTop::after {
    content: "⭐";
    position: absolute;
    top: -12px;
    left: -10px;
    font-size: 18px;
    transform: rotate(-12deg);
}
#toTop.show {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}
#toTop:hover {
    transform: translateY(-3px) rotate(-3deg);
}
#toTop:active {
    transform: translateY(2px);
    box-shadow: 2px 2px 0 var(--ink);
}
#toTop:focus-visible {
    outline: 3px dashed var(--ink);
    outline-offset: 3px;
}

.sticky-safe {
    position: sticky;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    .book-card,
    .pill,
    #toTop,
    .pill .pill-txt {
        transition: none;
    }
    .book-card {
        transform: rotate(var(--rot, 0deg));
    }
    .book-card:hover {
        transform: rotate(0deg);
    }
}