/* =========================================================
   TCDevHub — Binary Converter
   ========================================================= */

:root {
    color-scheme: light;

    --bg: #f7f9fc;
    --surface: #ffffff;

    --text: #111827;
    --muted: #667085;
    --subtle: #98a2b3;

    --border: #e4e7ec;
    --border-strong: #d0d5dd;

    --blue: #2563eb;
    --blue-dark: #1d4ed8;
    --blue-soft: #eff6ff;

    --error: #dc2626;
    --success: #16a34a;

    --header-bg: rgba(255, 255, 255, 0.96);
    --mode-bg: #f2f4f7;
    --input-header-bg: #fbfcfe;
    --input-bg: #ffffff;
    --result-bg: #fbfcfe;
    --button-hover-bg: #f9fafb;

    --placeholder: #b2b8c2;
    --focus-ring: rgba(37, 99, 235, 0.08);
    --mode-shadow: rgba(16, 24, 40, 0.06);

    --button-primary-text: #ffffff;

    --radius: 14px;
    --radius-small: 10px;
}

[data-theme="dark"] {
    color-scheme: dark;

    --bg: #202124;
    --surface: #292a2d;

    --text: #e8eaed;
    --muted: #bdc1c6;
    --subtle: #9aa0a6;

    --border: #3c4043;
    --border-strong: #5f6368;

    --blue: #8ab4f8;
    --blue-dark: #aecbfa;
    --blue-soft: rgba(138, 180, 248, 0.12);

    --error: #f28b82;
    --success: #81c995;

    --header-bg: rgba(32, 33, 36, 0.96);
    --mode-bg: #303134;
    --input-header-bg: #252629;
    --input-bg: #292a2d;
    --result-bg: #252629;
    --button-hover-bg: #303134;

    --placeholder: #70757a;
    --focus-ring: rgba(138, 180, 248, 0.15);
    --mode-shadow: rgba(0, 0, 0, 0.30);

    --button-primary-text: #202124;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;

    background: var(--bg);
    color: var(--text);

    font-family: "Inter", sans-serif;
}

button,
textarea {
    font: inherit;
}

button {
    cursor: pointer;
}

a {
    color: inherit;
    text-decoration: none;
}


/* =========================
   PAGE
========================= */

.binary-page {
    width: min(960px, calc(100% - 40px));
    margin: 0 auto;
}


/* =========================
   HEADER
========================= */

.tool-header {
    margin: 0 -20px;

    background: var(--header-bg);
    border-bottom: 1px solid var(--border);
}

.header-content {
    width: min(1180px, calc(100% - 40px));
    min-height: 76px;

    margin: 0 auto;

    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;

    gap: 28px;
}

.tool-brand {
    display: inline-flex;
    align-items: center;
}

.tool-logo {
    display: block;
    width: 148px;
    height: auto;
}

.tool-header-info {
    min-width: 0;
}

.tool-eyebrow {
    display: block;
    margin-bottom: 4px;

    color: var(--subtle);

    font-family: "IBM Plex Mono", monospace;
    font-size: 10px;
    font-weight: 600;

    letter-spacing: 0.12em;
}

.tool-header-info h1 {
    margin: 0;

    font-size: 16px;
    line-height: 1.3;
    font-weight: 700;
}

.tool-description {
    display: none;
}

.tool-back {
    display: inline-flex;
    align-items: center;
    gap: 7px;

    color: var(--muted);

    font-size: 13px;
    font-weight: 600;

    transition:
        color 0.15s ease,
        transform 0.15s ease;
}

.tool-back:hover {
    color: var(--text);
    transform: translateX(-2px);
}


/* =========================
   INTRO
========================= */

.tool-intro {
    padding: 64px 0 38px;

    display: flex;
    align-items: flex-end;
    justify-content: space-between;

    gap: 30px;
}

.tool-kicker {
    display: block;

    color: var(--blue);

    font-family: "IBM Plex Mono", monospace;
    font-size: 10px;
    font-weight: 600;

    letter-spacing: 0.1em;
}

.tool-intro h2 {
    margin: 10px 0 8px;

    font-size: clamp(32px, 5vw, 46px);
    line-height: 1.08;

    letter-spacing: -0.04em;
    font-weight: 800;
}

.tool-intro p {
    max-width: 600px;
    margin: 0;

    color: var(--muted);

    font-size: 15px;
    line-height: 1.7;
}

.tool-intro-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;

    padding-bottom: 4px;
}

.tool-intro-meta span {
    padding: 7px 10px;

    border: 1px solid var(--border);
    border-radius: 8px;

    background: var(--surface);
    color: var(--muted);

    font-family: "IBM Plex Mono", monospace;
    font-size: 10px;
    font-weight: 500;
}


/* =========================
   CONVERTER
========================= */

.conversor {
    padding: 30px;

    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}


/* =========================
   MODE
========================= */

.modo {
    display: grid;
    grid-template-columns: 1fr 1fr;

    padding: 4px;

    background: var(--mode-bg);
    border-radius: var(--radius-small);

    margin-bottom: 28px;
}

.modo button {
    min-height: 42px;

    padding: 0 14px;

    border: 0;
    border-radius: 7px;

    background: transparent;
    color: var(--muted);

    font-size: 13px;
    font-weight: 600;

    transition:
        background 0.15s ease,
        color 0.15s ease,
        box-shadow 0.15s ease;
}

.modo button:hover {
    color: var(--text);
}

.modo button.modo-ativo {
    background: var(--surface);
    color: var(--text);

    box-shadow:
        0 1px 2px var(--mode-shadow);
}


/* =========================
   INPUT
========================= */

.entrada {
    border: 1px solid var(--border);
    border-radius: var(--radius-small);

    overflow: hidden;
}

.campo-topo,
.resultado-topo {
    min-height: 48px;

    padding: 0 14px;

    display: flex;
    align-items: center;
    justify-content: space-between;

    background: var(--input-header-bg);
    border-bottom: 1px solid var(--border);
}

.campo-topo label,
.resultado-topo label {
    font-size: 12px;
    font-weight: 700;
}

.campo-topo span,
.resultado-topo span {
    color: var(--subtle);

    font-family: "IBM Plex Mono", monospace;
    font-size: 9px;
    font-weight: 600;

    letter-spacing: 0.08em;
}

#entradaTexto,
#resultadoTexto {
    display: block;

    width: 100%;
    min-height: 260px;

    padding: 18px;

    border: 0;
    outline: 0;

    resize: vertical;

    background: var(--input-bg);
    color: var(--text);

    font-family: "IBM Plex Mono", monospace;
    font-size: 13px;
    line-height: 1.7;
}

#entradaTexto:focus {
    box-shadow:
        inset 0 0 0 2px var(--focus-ring);
}

#entradaTexto::placeholder,
#resultadoTexto::placeholder {
    color: var(--placeholder);
}

.campo-rodape {
    min-height: 40px;

    padding: 0 14px;

    display: flex;
    align-items: center;
    justify-content: space-between;

    border-top: 1px solid var(--border);

    color: var(--subtle);

    font-family: "IBM Plex Mono", monospace;
    font-size: 10px;
}


/* =========================
   ACTIONS
========================= */

.acoes {
    display: flex;
    gap: 10px;

    padding: 18px 0;
}

.btn-principal,
.btn-secundario {
    min-height: 42px;

    padding: 0 18px;

    border-radius: var(--radius-small);

    font-size: 13px;
    font-weight: 600;

    transition:
        background 0.15s ease,
        border-color 0.15s ease;
}

.btn-principal {
    border: 1px solid var(--blue);

    background: var(--blue);
    color: var(--button-primary-text);
}

.btn-principal:hover {
    background: var(--blue-dark);
}

.btn-secundario {
    border: 1px solid var(--border);

    background: var(--input-bg);
    color: var(--text);
}

.btn-secundario:hover {
    border-color: var(--border-strong);
    background: var(--button-hover-bg);
}


/* =========================
   RESULT
========================= */

.resultado {
    border: 1px solid var(--border);
    border-radius: var(--radius-small);

    overflow: hidden;
}

.resultado-topo button {
    min-height: 30px;

    padding: 0 10px;

    border: 1px solid var(--border);
    border-radius: 7px;

    background: var(--input-bg);
    color: var(--text);

    font-size: 11px;
    font-weight: 600;

    transition:
        border-color 0.15s ease,
        background 0.15s ease;
}

.resultado-topo button:hover {
    border-color: var(--blue);
    background: var(--blue-soft);
    color: var(--blue);
}

#resultadoTexto {
    min-height: 220px;

    background: var(--result-bg);
}


/* =========================
   MESSAGE
========================= */

.mensagem {
    min-height: 20px;

    margin: 14px 2px 0;

    color: var(--error);

    font-size: 12px;
    line-height: 1.5;
}


/* =========================
   INFO
========================= */

.info {
    display: grid;
    grid-template-columns: repeat(3, 1fr);

    margin-top: 18px;

    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);

    overflow: hidden;
}

.info-item {
    min-height: 82px;

    padding: 18px;

    display: flex;
    flex-direction: column;
    justify-content: center;

    gap: 5px;
}

.info-item + .info-item {
    border-left: 1px solid var(--border);
}

.info-item span {
    color: var(--subtle);

    font-family: "IBM Plex Mono", monospace;
    font-size: 9px;
    font-weight: 600;

    letter-spacing: 0.08em;
}

.info-item strong {
    font-size: 13px;
    font-weight: 600;
}

.info-item .status {
    color: var(--success);
}


/* =========================
   FOOTER
========================= */

.tool-footer {
    min-height: 90px;

    margin-top: 42px;
    padding: 22px 0;

    display: flex;
    align-items: center;
    justify-content: space-between;

    gap: 20px;

    border-top: 1px solid var(--border);

    color: var(--subtle);
    font-size: 11px;
}

.tool-footer-brand img {
    display: block;

    width: 128px;
    height: auto;
}


/* =========================
   RESPONSIVE
========================= */

@media (max-width: 700px) {

    .binary-page {
        width: calc(100% - 28px);
    }

    .tool-header {
        margin: 0 -14px;
    }

    .header-content {
        width: calc(100% - 28px);

        min-height: 68px;

        grid-template-columns: auto 1fr auto;

        gap: 16px;
    }

    .tool-logo {
        width: 124px;
    }

    .tool-header-info h1 {
        font-size: 14px;
    }

    .tool-eyebrow {
        font-size: 9px;
    }

    .tool-back {
        font-size: 12px;
    }

    .tool-back span {
        display: none;
    }

    .tool-intro {
        align-items: flex-start;
        flex-direction: column;

        padding: 46px 0 28px;
    }

    .tool-intro h2 {
        font-size: 34px;
    }

    .conversor {
        padding: 22px;
    }

    .info-item {
        padding: 14px;
    }
}


@media (max-width: 430px) {

    .tool-header-info {
        display: none;
    }

    .header-content {
        grid-template-columns: 1fr auto;
    }

    .tool-logo {
        width: 132px;
    }

    .tool-intro {
        padding-top: 38px;
    }

    .tool-intro h2 {
        font-size: 30px;
    }

    .tool-intro p {
        font-size: 14px;
    }

    .conversor {
        padding: 16px;
    }

    .modo {
        grid-template-columns: 1fr;

        gap: 2px;
    }

    .modo button {
        min-height: 44px;
    }

    .acoes {
        flex-direction: column;
    }

    .btn-principal,
    .btn-secundario {
        width: 100%;
    }

    #entradaTexto {
        min-height: 220px;
    }

    #resultadoTexto {
        min-height: 190px;
    }

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

    .info-item {
        min-height: 68px;
    }

    .info-item + .info-item {
        border-top: 1px solid var(--border);
        border-left: 0;
    }

    .tool-footer {
        align-items: flex-start;
        flex-direction: column;

        gap: 12px;

        padding: 20px 0;
    }
}