@import url(../../assets/fonts/IosevkaCustom.css);

:root {
    --bg: #fbf1c7;
    --text: #4f3829;
    --text-dim: #7c5c48;
    --link: #45707a;
    --red: #c14a4a;
    --card-bg: rgba(0, 0, 0, 0.03);
    --card-border: rgba(0, 0, 0, 0.07);
    --divider: rgba(0, 0, 0, 0.1);
    --noise-opacity: 0.035;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #282828;
        --text: #ddc7a1;
        --text-dim: #b8a48a;
        --link: #7daea3;
        --red: #ea6962;
        --card-bg: rgba(255, 255, 255, 0.03);
        --card-border: rgba(255, 255, 255, 0.08);
        --divider: rgba(255, 255, 255, 0.1);
        --noise-opacity: 0.06;
    }
}

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

body {
    font-family: "Iosevka Custom Web", monospace;
    font-size: large;
    line-height: 1.7;
    background-color: var(--bg);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    padding: 3em 1.2em 5em;
    position: relative;
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    z-index: 0;
    opacity: var(--noise-opacity);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='300' height='300'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.35' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='300' height='300' filter='url(%23n)' opacity='1'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 200px 200px;
}

#page {
    position: relative;
    z-index: 1;
    width: 30em;
    max-width: 100%;
}

.page-header {
    margin-bottom: 2.5em;
    padding-bottom: 2em;
    border-bottom: 1px solid var(--divider);
}

.page-header h1 {
    font-weight: 300;
    font-size: 2.4em;
    letter-spacing: 0.04em;
    margin: 0 0 0.2em;
}

.back-link {
    font-size: 0.8em;
    color: var(--link);
    text-decoration: none;
}

.back-link:hover {
    color: var(--red);
    transition: color 0.2s;
}

.back-link::before {
    content: "← ";
}

.converter-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.8em 1.5em;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 0.25em;
}

.field label {
    font-size: 0.72em;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text-dim);
    display: flex;
    align-items: center;
    gap: 0.5em;
}

.field input[type="text"] {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 3px;
    padding: 0.3em 0.5em;
    font-family: "Iosevka Custom Web", monospace;
    font-size: 0.85em;
    color: var(--text);
    outline: none;
    width: 100%;
    transition: border-color 0.15s;
}

.field input[type="text"]:focus {
    border-color: var(--link);
}

select.bits-select {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 2px;
    color: var(--text-dim);
    font-family: "Iosevka Custom Web", monospace;
    font-size: 1em;
    padding: 0 0.2em;
    outline: none;
    cursor: pointer;
}

.custom-base-label {
    display: flex;
    align-items: center;
    gap: 0.4em;
}

input.custom-size-input {
    width: 2.5ch;
    background: var(--card-bg);
    border: none;
    border-bottom: 1px solid var(--text-dim);
    color: var(--text-dim);
    font-family: "Iosevka Custom Web", monospace;
    font-size: 1em;
    text-align: center;
    outline: none;
    padding: 0;
}

@media (max-width: 600px) {
    body {
        padding: 2em 1em 4em;
    }

    .converter-grid {
        grid-template-columns: 1fr;
    }

    .f32-grid {
        --f32-btn: min(0.6em, calc((100vw - 2em - 39px) / 32));
    }
}

/* ── float32 breakdown ───────────────────────────────────────── */

.float32-field {
    grid-column: 1 / -1;
}

.f32-grid {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    gap: 0;
    margin-top: 0.5em;
    /* 32 buttons + 31 gaps(1px) + 2 group separators(~8px) must fit in available width.
       available ≈ 100vw - 2*1.2em padding. button width = (avail - 39px) / 32        */
    --f32-btn: min(0.6em, calc((100vw - 2.4em - 39px) / 32));
    font-size: var(--f32-btn);
}

.f32-group {
    display: flex;
    flex-direction: column;
    gap: 0.3em;
}

.f32-exp {
    border-left: 1px solid var(--divider);
    border-right: 1px solid var(--divider);
    padding: 0 2px;
    margin: 0 1px;
}

.f32-bits {
    display: flex;
    flex-direction: row;
    gap: 1px;
}

.f32-bit {
    width: 1.4em;
    height: 1.8em;
    border: 1px solid var(--card-border);
    border-radius: 2px;
    background: var(--card-bg);
    color: var(--text-dim);
    font-family: "Iosevka Custom Web", monospace;
    font-size: 1em;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.1s, color 0.1s, border-color 0.1s;
    user-select: none;
    padding: 0;
}

.f32-bit:hover {
    border-color: var(--text-dim);
    color: var(--text);
}

.f32-sign .f32-bit[data-val="1"] {
    background: rgba(193, 74, 74, 0.15);
    border-color: rgba(193, 74, 74, 0.45);
    color: var(--red);
}

.f32-exp .f32-bit[data-val="1"] {
    background: rgba(69, 112, 122, 0.15);
    border-color: rgba(69, 112, 122, 0.45);
    color: var(--link);
}

.f32-mantissa .f32-bit[data-val="1"] {
    background: rgba(79, 56, 41, 0.12);
    border-color: rgba(79, 56, 41, 0.3);
    color: var(--text);
}

@media (prefers-color-scheme: dark) {
    .f32-sign .f32-bit[data-val="1"] {
        background: rgba(234, 105, 98, 0.15);
        border-color: rgba(234, 105, 98, 0.45);
    }
    .f32-exp .f32-bit[data-val="1"] {
        background: rgba(125, 174, 163, 0.15);
        border-color: rgba(125, 174, 163, 0.45);
    }
    .f32-mantissa .f32-bit[data-val="1"] {
        background: rgba(221, 199, 161, 0.10);
        border-color: rgba(221, 199, 161, 0.25);
    }
}

.f32-label {
    font-size: 1em;
    letter-spacing: 0.04em;
    color: var(--text-dim);
    white-space: nowrap;
    padding-top: 0.3em;
}