@import url('https://fonts.googleapis.com/css2?family=Space+Mono:wght@400;700&family=DM+Sans:ital,wght@0,300;0,400;0,500;0,600;1,400&display=swap');

:root {
    --bg:           #0e0e10;
    --bg-surface:   #16161a;
    --bg-elevated:  #1e1e24;
    --bg-input:     #121216;
    --border:       #2a2a35;
    --border-focus: #4a9eff;

    --text-primary:   #e8e8f0;
    --text-secondary: #8888a8;
    --text-dim:       #55556a;

    --accent:     #22c55e;
    --accent-dim: #14532d;
    --accent-glow: rgba(34, 197, 94, 0.15);

    --blue:   #4a9eff;
    --purple: #a855f7;
    --amber:  #f59e0b;
    --red:    #ef4444;
    --red-dim:#450a0a;

    --radius-sm: 6px;
    --radius:    10px;
    --radius-lg: 16px;

    --font-mono: 'Space Mono', monospace;
    --font-sans: 'DM Sans', sans-serif;

    --shadow:    0 4px 16px rgba(0,0,0,.5);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }

body {
    background-color: var(--bg);
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: .9375rem;
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a { color: var(--blue); text-decoration: none; }
a:hover { text-decoration: underline; }
img { max-width: 100%; display: block; }

.converter-wrapper { max-width: 900px; margin: 0 auto; padding: 0 20px 60px; }

/* ── Header ── */
.converter-header { padding: 48px 0 32px; text-align: center; position: relative; }
.converter-header::after { content: ''; display: block; width: 48px; height: 2px; background: var(--accent); margin: 20px auto 0; }
.converter-header h1 { font-family: var(--font-mono); font-size: clamp(1.25rem,4vw,1.875rem); font-weight: 700; letter-spacing: -.02em; line-height: 1.2; }
.converter-header h1 span { color: var(--accent); }
.converter-header p { color: var(--text-secondary); font-size: .9rem; margin-top: 10px; font-weight: 300; }

/* ── Ad slots ── */
.ad-slot { border-radius: var(--radius); background: var(--bg-surface); border: 1px dashed var(--border); display: flex; align-items: center; justify-content: center; color: var(--text-dim); font-family: var(--font-mono); font-size: .7rem; letter-spacing: .05em; text-transform: uppercase; overflow: hidden; }
.ad-slot--top { height: 90px; margin-bottom: 28px; }

/* ── Card ── */
.converter-card { background: var(--bg-surface); border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 28px; box-shadow: var(--shadow); }

/* ── Upload zone ── */
.upload-zone { border: 2px dashed var(--border); border-radius: var(--radius); padding: 36px 24px; text-align: center; cursor: pointer; transition: border-color .2s, background .2s; position: relative; background: var(--bg-input); }
.upload-zone:hover, .upload-zone.drag-over { border-color: var(--accent); background: var(--accent-glow); }
.upload-zone.has-files { border-style: solid; border-color: var(--border-focus); padding: 16px 24px; }

.upload-icon { width: 44px; height: 44px; margin: 0 auto 12px; border-radius: 10px; background: var(--bg-elevated); border: 1px solid var(--border); display: flex; align-items: center; justify-content: center; color: var(--text-secondary); transition: border-color .2s, color .2s; }
.upload-zone:hover .upload-icon, .upload-zone.drag-over .upload-icon { border-color: var(--accent); color: var(--accent); }

.upload-label { font-size: .9rem; color: var(--text-secondary); }
.upload-label strong { color: var(--text-primary); cursor: pointer; }
.upload-label strong:hover { color: var(--accent); }
.upload-hint { font-size: .75rem; color: var(--text-dim); margin-top: 6px; font-family: var(--font-mono); }

#file-input { position: absolute; width: 1px; height: 1px; opacity: 0; overflow: hidden; }

/* Upload default -> hidden when files present */
.upload-zone.has-files #upload-default { display: none; }

/* ── Batch summary header (dentro do upload-zone quando tem arquivos) ── */
.upload-batch-summary {
    display: none;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.upload-zone.has-files .upload-batch-summary { display: flex; }

.upload-batch-count {
    font-size: .875rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 8px;
}

.upload-batch-count .count-badge {
    background: var(--accent-dim);
    color: var(--accent);
    font-family: var(--font-mono);
    font-size: .7rem;
    padding: 2px 9px;
    border-radius: 100px;
    border: 1px solid rgba(34,197,94,.3);
}

.upload-batch-actions { display: flex; gap: 8px; }

/* ── Section label ── */
.section-label { font-family: var(--font-mono); font-size: .7rem; text-transform: uppercase; letter-spacing: .1em; color: var(--text-dim); margin-bottom: 10px; }

/* ── Format selectors ── */
.format-row { display: grid; grid-template-columns: 1fr auto 1fr; gap: 12px; align-items: end; margin-bottom: 20px; }
.format-arrow { width: 36px; height: 42px; display: flex; align-items: center; justify-content: center; color: var(--text-dim); font-size: 1rem; }

.format-select { width: 100%; background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--radius-sm); color: var(--text-primary); font-family: var(--font-sans); font-size: .9rem; padding: 10px 32px 10px 12px; outline: none; transition: border-color .2s; cursor: pointer; appearance: none; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%238888a8' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; background-position: right 12px center; }
.format-select:focus { border-color: var(--border-focus); }
.format-select:disabled { opacity: .5; cursor: not-allowed; }

.format-tip { font-size: .75rem; color: var(--text-secondary); margin-top: 6px; padding: 8px 10px; background: var(--bg-elevated); border-radius: var(--radius-sm); border-left: 2px solid var(--accent); display: none; }
.format-tip.visible { display: block; }

/* ── Options ── */
.options-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 20px; }
@media (max-width: 520px) { .options-grid { grid-template-columns: 1fr; } }

.option-toggle { background: var(--bg-input); border: 1px solid var(--border); border-radius: var(--radius-sm); padding: 12px 14px; cursor: pointer; transition: border-color .2s, background .2s; display: flex; align-items: flex-start; gap: 10px; }
.option-toggle:hover { border-color: var(--border-focus); }
.option-toggle input[type="checkbox"] { width: 16px; height: 16px; margin-top: 2px; accent-color: var(--accent); flex-shrink: 0; cursor: pointer; }
.option-text strong { display: block; font-size: .875rem; font-weight: 600; line-height: 1.3; }
.option-text span { font-size: .75rem; color: var(--text-secondary); }
.option-toggle.active { border-color: var(--accent); background: var(--accent-glow); }

/* ── Quality slider ── */
.quality-block { margin-bottom: 20px; display: none; }
.quality-block.visible { display: block; }
.quality-row { display: flex; align-items: center; gap: 12px; }
.quality-slider { flex: 1; accent-color: var(--accent); height: 4px; cursor: pointer; }
.quality-value { font-family: var(--font-mono); font-size: .875rem; color: var(--accent); width: 36px; text-align: right; }

.preset-row { display: flex; gap: 8px; margin-top: 10px; flex-wrap: wrap; }
.preset-btn { font-size: .75rem; font-family: var(--font-mono); padding: 4px 10px; border-radius: 100px; border: 1px solid var(--border); background: var(--bg-elevated); color: var(--text-secondary); cursor: pointer; transition: border-color .15s, color .15s; }
.preset-btn:hover { border-color: var(--border-focus); color: var(--text-primary); }

/* ── Botões principais ── */
.btn-convert { width: 100%; padding: 14px 24px; background: var(--accent); color: #fff; font-family: var(--font-sans); font-size: 1rem; font-weight: 600; border: none; border-radius: var(--radius-sm); cursor: pointer; letter-spacing: .01em; transition: opacity .2s, transform .1s; }
.btn-convert:hover:not(:disabled) { opacity: .9; }
.btn-convert:active:not(:disabled) { transform: scale(.99); }
.btn-convert:disabled { opacity: .45; cursor: not-allowed; }

/* ── Progress global ── */
.progress-bar-wrap { margin-top: 12px; background: var(--bg-elevated); border-radius: 100px; height: 4px; overflow: hidden; display: none; }
.progress-bar-wrap.visible { display: block; }
.progress-bar-fill { height: 100%; background: var(--accent); border-radius: 100px; transition: width .3s ease; width: 0%; }

/* ── BATCH QUEUE ── */
.batch-queue {
    margin-top: 20px;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.batch-item {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    display: grid;
    grid-template-columns: 44px 1fr auto auto;
    align-items: center;
    gap: 12px;
    animation: slideIn .2s ease;
    transition: border-color .2s;
}

.batch-item.converting { border-color: var(--blue); }
.batch-item.done       { border-color: var(--accent-dim); }
.batch-item.error      { border-color: var(--red); }

@keyframes slideIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }

.batch-thumb {
    width: 44px;
    height: 44px;
    object-fit: cover;
    border-radius: 5px;
    border: 1px solid var(--border);
    background: var(--bg-input);
    flex-shrink: 0;
}

.batch-info { min-width: 0; }

.batch-filename {
    font-size: .82rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.batch-meta {
    font-size: .72rem;
    color: var(--text-secondary);
    font-family: var(--font-mono);
    margin-top: 2px;
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.batch-reduction {
    color: var(--accent);
    font-weight: 700;
}

.batch-reduction.warn { color: var(--amber); }

.batch-status {
    font-family: var(--font-mono);
    font-size: .68rem;
    padding: 3px 9px;
    border-radius: 100px;
    white-space: nowrap;
    flex-shrink: 0;
}

.batch-status.queued    { background: var(--bg-input); color: var(--text-dim); border: 1px solid var(--border); }
.batch-status.converting { background: rgba(74,158,255,.12); color: var(--blue); border: 1px solid rgba(74,158,255,.3); }
.batch-status.done       { background: var(--accent-dim); color: var(--accent); border: 1px solid rgba(34,197,94,.3); }
.batch-status.over100    { background: rgba(245,158,11,.1); color: var(--amber); border: 1px solid rgba(245,158,11,.3); }
.batch-status.error      { background: var(--red-dim); color: var(--red); border: 1px solid rgba(239,68,68,.3); }

.batch-item-actions { display: flex; gap: 6px; flex-shrink: 0; }

/* ── Batch stats bar ── */
.batch-stats {
    display: none;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 14px 18px;
    margin-top: 16px;
    gap: 0;
}

.batch-stats.visible { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 16px; }

.batch-stat { text-align: center; }
.batch-stat-value { font-family: var(--font-mono); font-size: 1.1rem; font-weight: 700; color: var(--accent); line-height: 1; margin-bottom: 4px; }
.batch-stat-value.blue { color: var(--blue); }
.batch-stat-value.amber { color: var(--amber); }
.batch-stat-label { font-size: .68rem; color: var(--text-dim); text-transform: uppercase; letter-spacing: .07em; }

/* ── Download all ── */
.batch-download-row {
    display: none;
    gap: 10px;
    margin-top: 14px;
    flex-wrap: wrap;
}

.batch-download-row.visible { display: flex; }

/* ── Error ── */
.error-msg { background: var(--red-dim); border: 1px solid rgba(239,68,68,.3); border-radius: var(--radius-sm); padding: 12px 16px; color: var(--red); font-size: .875rem; margin-top: 12px; display: none; }
.error-msg.visible { display: block; }

/* ── Generic buttons ── */
.btn { display: inline-flex; align-items: center; gap: 8px; padding: 10px 18px; border-radius: var(--radius-sm); font-family: var(--font-sans); font-size: .875rem; font-weight: 600; cursor: pointer; transition: opacity .2s; border: none; white-space: nowrap; text-decoration: none; }
.btn-primary { background: var(--accent); color: #fff; flex: 1; justify-content: center; }
.btn-primary:hover { opacity: .88; }
.btn-secondary { background: var(--bg-elevated); border: 1px solid var(--border); color: var(--text-secondary); }
.btn-secondary:hover { border-color: var(--border-focus); color: var(--text-primary); }
.btn-ghost { background: none; border: 1px solid var(--border); color: var(--text-dim); font-size: .8rem; }
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }
.btn-sm { padding: 6px 12px; font-size: .78rem; }

/* ── Copy notify ── */
.copy-notify { position: fixed; bottom: 24px; right: 24px; background: var(--bg-elevated); border: 1px solid var(--accent); color: var(--accent); font-family: var(--font-mono); font-size: .8rem; padding: 10px 18px; border-radius: var(--radius-sm); box-shadow: var(--shadow); opacity: 0; transform: translateY(8px); transition: opacity .25s, transform .25s; pointer-events: none; z-index: 9999; }
.copy-notify.show { opacity: 1; transform: translateY(0); }

/* ── Info / FAQ ── */
.info-section { margin-top: 40px; }
.info-section h2 { font-family: var(--font-mono); font-size: 1rem; font-weight: 700; margin-bottom: 16px; color: var(--text-secondary); text-transform: uppercase; letter-spacing: .06em; }
.faq-item { border-bottom: 1px solid var(--border); padding: 16px 0; }
.faq-item:last-child { border-bottom: none; }
.faq-question { font-weight: 600; font-size: .9rem; margin-bottom: 6px; }
.faq-answer { font-size: .85rem; color: var(--text-secondary); line-height: 1.6; }

/* ── Footer ── */
.converter-footer { text-align: center; padding: 32px 0 0; color: var(--text-dim); font-size: .75rem; font-family: var(--font-mono); border-top: 1px solid var(--border); margin-top: 40px; }
.footer-links { display: flex; justify-content: center; gap: 20px; margin-bottom: 10px; flex-wrap: wrap; }
.footer-links a { color: var(--text-dim); font-size: .7rem; letter-spacing: .05em; text-transform: uppercase; }
.footer-links a:hover { color: var(--text-secondary); }

/* ── Spinner ── */
.spinner { display: inline-block; width: 14px; height: 14px; border: 2px solid rgba(255,255,255,.3); border-top-color: #fff; border-radius: 50%; animation: spin .7s linear infinite; vertical-align: middle; }
.spinner-blue { border-color: rgba(74,158,255,.3); border-top-color: var(--blue); }
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Theme (light) ── */
[data-theme="light"] {
    --bg: #f4f4f7; --bg-surface: #fff; --bg-elevated: #f0f0f5; --bg-input: #f8f8fc;
    --border: #dddde8; --border-focus: #3b82f6;
    --text-primary: #111118; --text-secondary: #5a5a78; --text-dim: #9999b8;
    --accent: #16a34a; --accent-dim: #dcfce7; --accent-glow: rgba(22,163,74,.08);
    --blue: #2563eb; --amber: #d97706; --red: #dc2626; --red-dim: #fee2e2;
    --shadow: 0 2px 12px rgba(0,0,0,.08);
}

[data-theme="light"] .format-select { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%235a5a78' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E"); }

/* ── Theme toggle ── */
.theme-toggle { position: fixed; top: 16px; right: 16px; background: var(--bg-surface); border: 1px solid var(--border); border-radius: 100px; padding: 6px 12px; display: flex; align-items: center; gap: 6px; font-size: .75rem; font-family: var(--font-mono); color: var(--text-secondary); cursor: pointer; z-index: 100; box-shadow: 0 1px 3px rgba(0,0,0,.2); transition: border-color .2s, color .2s; }
.theme-toggle:hover { border-color: var(--accent); color: var(--text-primary); }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ── Responsive ── */
@media (max-width: 640px) {
    .converter-card { padding: 20px; }
    .batch-item { grid-template-columns: 36px 1fr; grid-template-rows: auto auto; }
    .batch-item-actions, .batch-status { grid-column: 2; }
    .batch-download-row { flex-direction: column; }
}

/* ── Utilities ── */
.hidden { display: none !important; }
.mt-4  { margin-top: 4px; }
.mt-8  { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mt-20 { margin-top: 20px; }