/* charmsec.css */
body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: #f8fafc;
    color: #1e293b;
    margin: 0;
    padding: 20px;
    line-height: 1.5;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: #ffffff;
    padding: 30px;
    border-radius: 12px;
    box-shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

header {
    border-bottom: 2px solid #e2e8f0;
    padding-bottom: 15px;
    margin-bottom: 25px;
}

h1 {
    color: #0f172a;
    font-size: 24px;
    margin: 0 0 5px 0;
}

.meta-info {
    font-size: 13px;
    color: #64748b;
    margin: 0;
}

.section {
    background-color: #f1f5f9;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 20px;
}

h2 {
    font-size: 18px;
    color: #334155;
    margin-top: 0;
    margin-bottom: 15px;
    border-left: 4px solid #3b82f6;
    padding-left: 10px;
}

.form-group {
    margin-bottom: 15px;
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: 5px;
    color: #475569;
    font-size: 14px;
}

/* ==========================================================================
   UIドメイン共通スタイル（入出力のルック＆フィール統一）
   ========================================================================== */

/* 1. データドメイン（数値データ空間：明るいデザインで一貫） */
.data-field {
    display: block;
    width: 100%;
    padding: 10px;
    border: 2px solid #cbd5e1;
    border-radius: 6px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 16px;
    box-sizing: border-box;
    background-color: #ffffff;
    color: #0f172a;
}
/* データ出力用（読み取り専用として背景を僅かに変化させつつ、トーンは一貫） */
div.data-field {
    min-height: 44px;
    background-color: #f8fafc;
}
input.data-field:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgb(59 130 246 / 15%);
}
/* エラー時の状態 */
.input-error {
    border-color: #dc2626 !important;
    box-shadow: 0 0 0 3px rgb(220 38 38 / 15%) !important;
}

/* 2. 符号ドメイン（Charmsec符号空間：ダークデザインで一貫） */
.code-field {
    display: block;
    width: 100%;
    padding: 10px;
    border: 2px solid #1e293b;
    border-radius: 6px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 18px;
    font-weight: bold;
    box-sizing: border-box;
    background-color: #0f172a;
    color: #38bdf8;
    letter-spacing: 1px;
}
/* 符号入力用（編集可能のカーソル色とフォーカス時の挙動） */
input.code-field {
    caret-color: #38bdf8;
}
input.code-field:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgb(59 130 246 / 30%);
}
/* 符号出力用（高さを入力ボックスと同期） */
div.code-field {
    min-height: 47px;
}

/* ========================================================================== */

.error-message {
    color: #dc2626;
    font-size: 13px;
    font-weight: 600;
    margin-top: 5px;
    display: none;
}
.error-message.is-visible {
    display: block;
}

button {
    background-color: #2563eb;
    color: #ffffff;
    border: none;
    padding: 10px 20px;
    font-size: 14px;
    font-weight: 500;
    border-radius: 6px;
    cursor: pointer;
    transition: background-color 0.2s;
}
button:hover {
    background-color: #1d4ed8;
}

.btn-secondary {
    background-color: #64748b;
}
.btn-secondary:hover {
    background-color: #475569;
}

.preset-buttons {
    margin-top: 10px;
}
.preset-buttons button {
    padding: 6px 12px;
    font-size: 12px;
    margin-right: 5px;
}

.char-display-area {
    display: flex;
    gap: 8px;
    margin-top: 10px;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
    font-size: 24px;
    font-weight: bold;
}
.char-display-area span {
    display: inline-block;
    width: 35px;
    height: 45px;
    line-height: 45px;
    text-align: center;
    border-radius: 4px;
    background: #e2e8f0;
}

footer {
    margin-top: 30px;
    text-align: center;
    font-size: 12px;
    color: #94a3b8;
    border-top: 1px solid #e2e8f0;
    padding-top: 15px;
}

.status-box {
    padding: 12px;
    border-radius: 6px;
    font-weight: 500;
    margin-bottom: 15px;
}

/* 誤りステータスカラー */
.status-ok { 
    background-color: #e6f4ea; 
    color: #137333; 
    border: 1px solid #ceead6; 
}
.char-display-area span.char-valid { 
    background-color: #dcfce7; 
    color: #166534; 
    border: 1px solid #bbf7d0; 
}

.status-corrected { 
    background-color: #fef7e0; 
    color: #b06000; 
    border: 1px solid #feebc8; 
}
.char-display-area span.char-corrected { 
    background-color: #fef7e0; 
    color: #b06000; 
    border: 1px solid #feebc8;
}

.status-detected { 
    background-color: #f1f3f4; 
    color: #5f6368; 
    border: 1px solid #e8eaed; 
}
.char-display-area span.char-uncorrectable { 
    background-color: #e1e3e4; 
    color: #5f6368; 
    border: 1px solid #cbd5e1;
}

.status-failure { 
    background-color: #fce8e6; 
    color: #a51d24; 
    border: 1px solid #fad2cf; 
}
.char-display-area span.char-false-corrected { 
    background-color: #fce8e6; 
    color: #a51d24; 
    border: 1px solid #fad2cf;
}
.char-display-area span.char-unknown,
.char-display-area span.char-missed { 
    background-color: #fff0d4; 
    color: #c05621; 
    border: 1px solid #fbd38d;
}
div.data-field.data-mismatch {
    background-color: #ffffff;
    color: #c05621;
    border-color: #cbd5e1;
}