:root {
    --bg: #070b14;
    --panel: #111827;
    --panel-soft: #172033;
    --border: #2b3852;
    --text: #eef4ff;
    --muted: #9aabc4;
    --accent: #4f8cff;
    --accent-hover: #70a2ff;
    --danger: #b93b4c;
    --highlight: #ffe66d;
    --highlight-text: #111827;
    --special: #ff8d8d;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: Arial, Helvetica, sans-serif;
}

button, input, textarea { font: inherit; }

button {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 9px 14px;
    background: var(--panel-soft);
    color: var(--text);
    cursor: pointer;
}

button:hover:not(:disabled) { border-color: var(--accent); }
button:disabled { opacity: .45; cursor: not-allowed; }
button.primary { background: var(--accent); border-color: var(--accent); }
button.primary:hover { background: var(--accent-hover); }
button.danger { background: var(--danger); border-color: var(--danger); }

.otp-container {
    width: min(1500px, calc(100% - 28px));
    margin: 24px auto 48px;
}

.otp-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 24px;
    margin-bottom: 18px;
}

.otp-header h1 { margin: 2px 0 8px; font-size: clamp(2rem, 5vw, 3.2rem); }
.otp-kicker { color: var(--accent-hover); text-transform: uppercase; letter-spacing: .12em; margin: 0; }
.otp-description { color: var(--muted); max-width: 850px; line-height: 1.55; }

.status-box {
    min-width: 230px;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--panel);
    color: var(--muted);
}

.status-box.error { border-color: var(--danger); color: #ffb2bc; }
.status-box.success { border-color: #318663; color: #a9f4d5; }

.panel {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 18px;
}

.controls-panel, .key-panel, .probability-panel { margin-bottom: 18px; }
.button-row, .settings-row, .manual-controls, .ranking-area, .score-box {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
}

.settings-row { margin-top: 14px; justify-content: space-between; }
.settings-row label { color: var(--muted); }
.settings-row input {
    width: 100px;
    margin-left: 8px;
    border: 1px solid var(--border);
    border-radius: 7px;
    padding: 7px;
    background: var(--bg);
    color: var(--text);
}

.progress-wrap { min-width: min(100%, 430px); display: grid; gap: 6px; color: var(--muted); }
progress { width: 100%; }

.section-title-row, .field-title-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}
.section-title-row h2 { margin: 0 0 4px; }
.section-title-row p { margin: 0 0 12px; color: var(--muted); }
.field-title-row { margin-bottom: 7px; font-weight: 700; }
.format-button { min-width: 58px; padding: 7px 10px; }

.byte-input, #tabelaProbabilidades {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: 9px;
    padding: 12px;
    resize: vertical;
    background: #070d19;
    color: var(--text);
    line-height: 1.5;
    font-family: Consolas, "Courier New", monospace;
}
.byte-input:focus, #tabelaProbabilidades:focus { outline: 2px solid rgba(79,140,255,.35); border-color: var(--accent); }

.byte-preview, .byte-output {
    min-height: 49px;
    margin-top: 8px;
    padding: 11px;
    border: 1px dashed var(--border);
    border-radius: 9px;
    background: #09101e;
    font-family: Consolas, "Courier New", monospace;
    line-height: 1.7;
    overflow-wrap: anywhere;
    white-space: pre-wrap;
}
.byte-preview.compact { min-height: 42px; }
.byte-token { display: inline-block; padding: 0 1px; border-radius: 3px; }
.byte-token.special { color: var(--special); font-weight: 700; }
.byte-token.selected { background: var(--highlight); color: var(--highlight-text); }

.manual-controls, .ranking-area, .score-box { margin-top: 14px; }
.selected-position { padding: 8px 10px; color: var(--muted); }
.ranking-area { border-top: 1px solid var(--border); padding-top: 14px; }
.ranking-buttons { display: flex; flex-wrap: wrap; gap: 6px; }
.ranking-buttons button { width: 42px; padding-inline: 0; }
.score-box { color: var(--muted); }
.score-box strong { color: var(--text); margin-right: 14px; }

.messages-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
    margin-bottom: 18px;
}
.message-card { position: relative; }
.message-number { color: var(--accent-hover); font-weight: 700; margin-bottom: 14px; }
.field-block { min-width: 0; }
.xor-symbol { text-align: center; color: var(--muted); padding: 8px; font-weight: 700; }

.probability-panel code { color: #b8d0ff; }
.table-note { color: var(--muted); margin-bottom: 0; }

@media (max-width: 900px) {
    .messages-grid { grid-template-columns: 1fr; }
    .otp-header { flex-direction: column; }
    .status-box { width: 100%; }
}

.cipher-preview[hidden] { display: none !important; }
.table-open-controls { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.table-open-controls select {
    min-width: 240px;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 9px 12px;
    background: var(--panel-soft);
    color: var(--text);
}
@media (max-width: 700px) {
    .probability-title-row { align-items: flex-start; flex-direction: column; }
    .table-open-controls, .table-open-controls select { width: 100%; }
}