/*
 * SplitSMART — styles.css
 * Paleta oficial Grovic Data (mesma visão de grovicdata.com / valerium.grovicdata.com):
 * navy quase-preto #020308 / superfícies #0A0D1A no dark · accent azul #1E4FCC→#4076EA.
 * Cores SÓ via tokens (--*) — zero hex literal fora deste bloco de tokens.
 *
 * Tema em 3 estados (padrão da casa p/ compat com host claro/escuro):
 *   :root                      → paleta light completa (default)
 *   @media dark + :not(light)  → dark quando o SISTEMA é dark e não há escolha explícita
 *   :root[data-theme="dark"]   → dark quando o usuário escolheu (toggle / host)
 * Os DOIS blocos dark são espelho um do outro — manter em sincronia.
 */

:root {
    color-scheme: light;

    /* escala de marca (constante nos dois temas) */
    --brand-300: #6190E8;
    --brand-400: #4076EA;
    --brand-500: #1E4FCC;
    --brand-700: #0E2C7A;
    --brand-950: #020308;

    --bg: #F5F7FC;
    --card: #FFFFFF;
    --elevated: #FFFFFF;
    --text: #0B0F1E;
    --text-soft: #333B52;
    --muted: #5C667F;
    --border: #E2E6F0;
    --border-strong: #C9D0E0;

    --accent: #1E4FCC;
    --accent-hover: #16389B;
    --on-accent: #FFFFFF;
    --accent-soft: #E4EBFB;
    --accent-soft-text: #16389B;
    --ring: #4076EA;

    --error: #B3261E;
    --error-bg: #FBEAE9;
    --success: #1E7A46;
    --warn: #8A5A00;
    --warn-bg: #FFF4DC;

    --title-gradient: linear-gradient(180deg, #0B0F1E 0%, #55607E 100%);

    --shadow: 0 1px 2px rgba(10, 13, 26, 0.05), 0 10px 30px rgba(10, 13, 26, 0.07);

    /* tipografia fluida (escala da família, quebra bem em 320-360px) */
    --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: ui-monospace, "Cascadia Code", Consolas, "Roboto Mono", monospace;
    --fs-sm: clamp(0.8125rem, 0.79rem + 0.12vw, 0.875rem);
    --fs-base: clamp(0.875rem, 0.84rem + 0.2vw, 1rem);
    --fs-lg: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
    --fs-xl: clamp(1.125rem, 1.05rem + 0.35vw, 1.25rem);
    --fs-2xl: clamp(1.25rem, 1.1rem + 0.75vw, 1.625rem);
    --fs-3xl: clamp(1.5rem, 1.25rem + 1.25vw, 2rem);
}

@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        color-scheme: dark;
        --bg: #020308;
        --card: #0A0D1A;
        --elevated: #11152A;
        --text: #F7F8FB;
        --text-soft: #C4CBDC;
        --muted: #8E97AD;
        --border: #1A1F36;
        --border-strong: #262D4A;
        --accent: #4076EA;
        --accent-hover: #6190E8;
        --on-accent: #FFFFFF;
        --accent-soft: #101C42;
        --accent-soft-text: #9DB7F2;
        --ring: #4076EA;
        --error: #F87171;
        --error-bg: #2B1113;
        --success: #4ADE80;
        --warn: #FBBF24;
        --warn-bg: #2A2008;
        --title-gradient: linear-gradient(180deg, #F7F8FB 0%, #565E78 100%);
        --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 10px 30px rgba(0, 0, 0, 0.35);
    }
}

:root[data-theme="dark"] {
    color-scheme: dark;
    --bg: #020308;
    --card: #0A0D1A;
    --elevated: #11152A;
    --text: #F7F8FB;
    --text-soft: #C4CBDC;
    --muted: #8E97AD;
    --border: #1A1F36;
    --border-strong: #262D4A;
    --accent: #4076EA;
    --accent-hover: #6190E8;
    --on-accent: #FFFFFF;
    --accent-soft: #101C42;
    --accent-soft-text: #9DB7F2;
    --ring: #4076EA;
    --error: #F87171;
    --error-bg: #2B1113;
    --success: #4ADE80;
    --warn: #FBBF24;
    --warn-bg: #2A2008;
    --title-gradient: linear-gradient(180deg, #F7F8FB 0%, #565E78 100%);
    --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 10px 30px rgba(0, 0, 0, 0.35);
}

/* ---------- reset ---------- */

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

* {
    margin: 0;
}

img,
svg {
    display: block;
    max-width: 100%;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: var(--fs-base);
    line-height: 1.55;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

:focus-visible {
    outline: 2px solid var(--ring);
    outline-offset: 2px;
}

::selection {
    background: var(--accent-soft);
    color: var(--accent-soft-text);
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0 0 0 0);
    white-space: nowrap;
    border: 0;
}

.num {
    font-variant-numeric: tabular-nums;
}

body.busy {
    cursor: progress;
}

/* ---------- layout ---------- */

.container {
    max-width: 800px;
    margin-inline: auto;
    padding-inline: 20px;
}

.skip-link {
    position: absolute;
    left: -999px;
    top: 8px;
    z-index: 10;
    background: var(--accent);
    color: var(--on-accent);
    padding: 8px 14px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: 600;
}

.skip-link:focus {
    left: 8px;
}

/* ---------- header (barra sticky, padrão Valerium) ---------- */

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    min-height: 60px;
    padding-block: 8px;
}

/* brand e controles com flex:1 → nav fica centrada de verdade */
.header-inner .brand,
.header-inner .header-controls {
    flex: 1;
}

.header-nav {
    display: flex;
    gap: 24px;
}

.header-nav a {
    color: var(--muted);
    text-decoration: none;
    font-size: var(--fs-sm);
    font-weight: 500;
    transition: color 0.15s;
}

.header-nav a:hover {
    color: var(--text);
}

.header-nav a[aria-current="page"] {
    color: var(--text);
}

/* .brand pode ser <a> (páginas internas) — mesma cara do <div> */
a.brand {
    text-decoration: none;
    color: inherit;
}

/* âncoras não somem embaixo da barra sticky */
.step,
.privacy-note {
    scroll-margin-top: 76px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand-badge {
    width: 34px;
    height: 34px;
    border-radius: 10px;
    background: linear-gradient(135deg, var(--brand-700), var(--brand-500));
    color: #FFFFFF;
    display: grid;
    place-items: center;
    font-size: 15px;
    line-height: 1;
    user-select: none;
}

.wordmark {
    font-size: 1.2rem;
    letter-spacing: -0.01em;
    color: var(--text);
}

.wordmark b {
    font-weight: 800;
    color: var(--accent);
}

.header-controls {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 8px;
}

/* ---------- botões ---------- */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    height: 38px;
    padding: 0 16px;
    border-radius: 10px;
    border: 1px solid transparent;
    font: inherit;
    font-size: var(--fs-base);
    font-weight: 600;
    cursor: pointer;
    background: transparent;
    color: var(--text);
    text-decoration: none;
    transition: background-color 0.15s, border-color 0.15s, color 0.15s;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--accent);
    color: var(--on-accent);
}

.btn-primary:hover:not(:disabled) {
    background: var(--accent-hover);
}

.btn-outline {
    border-color: var(--border-strong);
    background: var(--card);
}

.btn-outline:hover:not(:disabled) {
    border-color: var(--ring);
    color: var(--accent);
}

.btn-ghost {
    color: var(--muted);
}

.btn-ghost:hover:not(:disabled) {
    color: var(--error);
}

.btn-lg {
    height: 46px;
    padding: 0 26px;
    font-size: var(--fs-lg);
    border-radius: 12px;
}

.btn-sm {
    height: 34px;
    padding: 0 12px;
    font-size: var(--fs-sm);
    border-radius: 9px;
}

.btn svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
}

.icon-btn {
    display: grid;
    place-items: center;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    border: 1px solid var(--border-strong);
    background: var(--card);
    color: var(--text-soft);
    cursor: pointer;
    padding: 0;
    transition: border-color 0.15s, color 0.15s;
}

.icon-btn:hover {
    border-color: var(--ring);
    color: var(--accent);
}

.icon-btn svg {
    width: 16px;
    height: 16px;
}

.lang-btn {
    width: auto;
    padding-inline: 10px;
    font: inherit;
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.04em;
}

/* ---------- hero ---------- */

.hero {
    padding-block: 26px 6px;
}

.hero h1 {
    font-size: var(--fs-3xl);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.15;
    text-wrap: balance;
    margin-bottom: 14px;
    /* gradiente vertical no título — assinatura do design grovicdata.com */
    background: var(--title-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.privacy-note {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    background: var(--accent-soft);
    color: var(--accent-soft-text);
    border-radius: 12px;
    padding: 12px 14px;
    font-size: var(--fs-sm);
    font-weight: 500;
}

.privacy-note svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    margin-top: 1px;
}

/* ---------- passos ---------- */

.step {
    margin-block: 26px;
}

.step-head {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 14px;
}

.step-num {
    width: 30px;
    height: 30px;
    flex-shrink: 0;
    border-radius: 999px;
    background: var(--accent);
    color: var(--on-accent);
    font-family: var(--font-mono);
    font-weight: 700;
    font-size: 0.95rem;
    display: grid;
    place-items: center;
}

.step-head h2 {
    font-size: var(--fs-xl);
    font-weight: 700;
    letter-spacing: -0.01em;
}

.cutline {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--muted);
    font-size: 15px;
    margin-block: 4px;
    user-select: none;
}

.cutline::before,
.cutline::after {
    content: "";
    flex: 1;
    border-top: 2px dashed var(--border-strong);
}

/* ---------- dropzone ---------- */

.dropzone {
    border: 2px dashed var(--border-strong);
    border-radius: 16px;
    background: var(--card);
    transition: border-color 0.15s, background-color 0.15s;
}

.dropzone:hover,
.dropzone:focus-within,
.dropzone.dragging {
    border-color: var(--ring);
    background: var(--accent-soft);
}

.dropzone label {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: 42px 20px;
    text-align: center;
    cursor: pointer;
}

.dropzone-icon {
    color: var(--accent);
    margin-bottom: 4px;
}

.dropzone-icon svg {
    width: 38px;
    height: 38px;
}

.dropzone-cta {
    font-weight: 700;
    font-size: var(--fs-lg);
}

.dropzone-sub {
    color: var(--muted);
    font-size: var(--fs-sm);
}

.dropzone-sub .link-ish {
    color: var(--accent);
    font-weight: 600;
    text-decoration: underline;
}

.dropzone-hint {
    color: var(--muted);
    font-size: var(--fs-sm);
}

/* ---------- cards de arquivo ---------- */

.files-empty {
    color: var(--muted);
    font-size: var(--fs-sm);
    border: 1px dashed var(--border-strong);
    border-radius: 12px;
    padding: 16px;
    text-align: center;
}

#file-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.file-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    box-shadow: var(--shadow);
}

.file-head {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
}

.file-icon {
    color: var(--accent);
    flex-shrink: 0;
}

.file-icon svg,
.file-head > svg {
    width: 22px;
    height: 22px;
}

.file-titles {
    flex: 1;
    min-width: 0;
}

.file-name {
    font-weight: 700;
    overflow-wrap: anywhere;
}

.file-meta {
    color: var(--muted);
    font-size: var(--fs-sm);
}

.file-remove:hover {
    border-color: var(--error);
    color: var(--error);
}

.file-body {
    padding: 14px 16px 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.file-status-loading {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--muted);
}

.spinner {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    border: 2.5px solid var(--border-strong);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(1turn);
    }
}

.alert {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 14px;
    border-radius: 10px;
    font-size: var(--fs-sm);
    font-weight: 500;
}

.alert svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    margin-top: 2px;
}

.alert-error {
    background: var(--error-bg);
    color: var(--error);
}

.alert-warn {
    background: var(--warn-bg);
    color: var(--warn);
}

/* ---------- editor de partes ---------- */

.parts {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.part-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 108px 108px 36px;
    gap: 10px;
    align-items: end;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 4px;
    min-width: 0;
}

.field-label {
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--muted);
}

input[type="text"],
input[type="number"] {
    width: 100%;
    height: 38px;
    padding: 0 10px;
    border: 1px solid var(--border-strong);
    border-radius: 9px;
    background: var(--elevated);
    color: var(--text);
    font: inherit;
    font-size: var(--fs-base);
}

input[type="number"] {
    font-variant-numeric: tabular-nums;
}

input:focus {
    outline: 2px solid var(--ring);
    outline-offset: 1px;
    border-color: var(--ring);
}

input[aria-invalid="true"] {
    border-color: var(--error);
}

input::placeholder {
    color: var(--muted);
    opacity: 0.8;
}

.part-remove {
    height: 38px;
}

.part-remove:hover {
    border-color: var(--error);
    color: var(--error);
}

.part-error {
    color: var(--error);
    font-size: var(--fs-sm);
    font-weight: 500;
}

.parts-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

.parts-count {
    color: var(--muted);
    font-size: var(--fs-sm);
}

details.quick {
    border: 1px dashed var(--border-strong);
    border-radius: 10px;
    padding: 10px 12px;
}

details.quick summary {
    cursor: pointer;
    color: var(--accent);
    font-weight: 600;
    font-size: var(--fs-sm);
}

.quick-row {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 10px;
}

.quick-row input {
    flex: 1;
    min-width: 180px;
}

.quick-help {
    color: var(--muted);
    font-size: var(--fs-sm);
    margin-top: 6px;
}

.quick-error {
    color: var(--error);
    font-size: var(--fs-sm);
    font-weight: 500;
    margin-top: 6px;
}

/* ---------- gerar + resultados ---------- */

.generate-row {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
}

.hint {
    color: var(--muted);
    font-size: var(--fs-sm);
}

.status {
    color: var(--muted);
    font-size: var(--fs-sm);
    min-height: 1.3em;
}

.status.ok {
    color: var(--success);
    font-weight: 600;
}

#results {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-top: 12px;
}

.result-group {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 12px 16px 4px;
    box-shadow: var(--shadow);
}

.result-group-title {
    font-size: var(--fs-sm);
    font-weight: 600;
    color: var(--muted);
    overflow-wrap: anywhere;
    padding-block: 4px 8px;
}

.result-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding-block: 10px;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
}

.result-check {
    color: var(--success);
    flex-shrink: 0;
}

.result-row svg.result-check {
    width: 18px;
    height: 18px;
}

.result-info {
    flex: 1;
    min-width: 160px;
}

.result-name {
    font-weight: 700;
    overflow-wrap: anywhere;
}

.result-meta {
    color: var(--muted);
    font-size: var(--fs-sm);
}

.results-actions {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 16px;
}

/* ---------- páginas estáticas (como-funciona / privacidade) ---------- */

.page {
    padding-block: 36px 8px;
}

.page h1 {
    font-size: var(--fs-3xl);
    font-weight: 800;
    letter-spacing: -0.02em;
    line-height: 1.15;
    text-wrap: balance;
    margin-bottom: 14px;
    background: var(--title-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.page-intro {
    color: var(--text-soft);
    max-width: 62ch;
}

.page .step p {
    color: var(--text-soft);
    max-width: 65ch;
}

.page .step p + h3,
.page .step p + p {
    margin-top: 10px;
}

.page-sub {
    font-size: var(--fs-lg);
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 10px;
}

.page-list {
    margin: 0;
    padding-left: 20px;
    color: var(--text-soft);
    display: flex;
    flex-direction: column;
    gap: 8px;
    max-width: 65ch;
}

.page .cta-row {
    margin-top: 34px;
}

/* ---------- footer (colunas, padrão Valerium) ---------- */

.site-footer {
    margin-top: 64px;
    border-top: 1px solid var(--border);
    color: var(--muted);
    font-size: var(--fs-sm);
}

.footer-inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 32px 48px;
    padding-block: 40px;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 300px;
}

.footer-cols {
    display: flex;
    flex-wrap: wrap;
    gap: 24px 56px;
}

.footer-col {
    display: flex;
    flex-direction: column;
    min-width: 140px;
}

.footer-col-title {
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
    margin-bottom: 10px;
}

.footer-col a {
    color: var(--text-soft);
    text-decoration: none;
    padding-block: 5px;
    transition: color 0.15s;
}

.footer-col a:hover {
    color: var(--accent);
}

.footer-bottom {
    border-top: 1px solid var(--border);
}

.footer-bottom-inner {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 8px 24px;
    padding-block: 18px;
}

/* ---------- responsivo ---------- */

@media (max-width: 700px) {
    /* mobile: header só marca + toggles; nav vive no footer */
    .header-nav {
        display: none;
    }
}

@media (max-width: 560px) {
    .part-row {
        grid-template-columns: 1fr 1fr 44px;
    }

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

    .btn-lg {
        width: 100%;
    }

    /* alvo de toque confortável (~44px) em tela pequena */
    .btn,
    input[type="text"],
    input[type="number"] {
        height: 44px;
    }

    .icon-btn {
        width: 44px;
        height: 44px;
    }

    /* 16px+ evita o zoom automático do iOS ao focar input */
    input[type="text"],
    input[type="number"] {
        font-size: 1rem;
    }
}

/* ---------- movimento reduzido ---------- */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }

    .spinner {
        animation: none;
        border-top-color: var(--border-strong);
    }
}