/* markup-margin-calculator.css — Station 04.
   Light working surface inside the dark station chrome, matching the other
   tools: this is a thing you read numbers off, and dark-on-dark digits at
   small sizes are harder to scan. */

.mm-grid { display: grid; gap: 16px; grid-template-columns: repeat(auto-fit, minmax(330px, 1fr)); }

.mm-card {
    background: #fff; border: 1px solid var(--border); border-radius: 4px;
    padding: 22px 22px 18px;
}
.mm-head { display: flex; align-items: baseline; gap: 12px; }
.mm-step {
    font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
    font-size: 11px; letter-spacing: .18em; color: #9aa3b2;
}
.mm-card h2 { margin: 0; font-size: 1.02rem; color: var(--primary); font-weight: 700; }
.mm-hint { margin: 4px 0 18px; color: var(--text-muted); font-size: .88rem; }

.mm-field { display: block; margin-bottom: 14px; }
.mm-field span {
    display: block; font-size: 11px; letter-spacing: .1em; text-transform: uppercase;
    color: var(--text-muted); font-weight: 700; margin-bottom: 6px;
}
.mm-field input {
    width: 100%; box-sizing: border-box; padding: 11px 13px;
    border: 1px solid var(--border); border-radius: 3px;
    font: inherit; font-size: 1.05rem; color: var(--text);
    font-variant-numeric: tabular-nums;
}
.mm-field input:focus {
    outline: none; border-color: var(--accent);
    box-shadow: 0 0 0 3px rgba(27,111,184,.12);
}

.mm-presets { display: flex; gap: 8px; flex-wrap: wrap; margin: -4px 0 16px; }
.mm-preset {
    border: 1px solid var(--border); background: var(--light-bg); color: var(--text-muted);
    border-radius: 999px; padding: 5px 14px; font: inherit; font-size: .82rem;
    font-weight: 700; cursor: pointer;
}
.mm-preset:hover { border-color: var(--accent); color: var(--accent); }

.mm-results { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 4px; }
.mm-res {
    flex: 1 1 120px; background: var(--light-bg); border: 1px solid var(--border);
    border-radius: 3px; padding: 12px 14px;
}
.mm-res-primary { background: #eef4fb; border-color: #c8ddf2; }
.mm-res-label {
    display: block; font-size: 10px; letter-spacing: .1em; text-transform: uppercase;
    color: var(--text-muted); font-weight: 700;
}
.mm-res-val {
    display: block; margin-top: 4px; font-size: 1.5rem; font-weight: 800; color: var(--primary);
    font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
    font-variant-numeric: tabular-nums; letter-spacing: -.01em;
}
.mm-res-primary .mm-res-val { color: var(--accent); }
.mm-res-val.is-muted { color: #b6bfcc; }
.mm-res-foot { display: block; margin-top: 2px; font-size: 10.5px; color: #9aa3b2; }

.mm-note {
    margin: 14px 0 0; font-size: .88rem; color: var(--text); line-height: 1.5;
    border-left: 3px solid var(--accent); padding-left: 11px;
}
.mm-note.is-muted { color: var(--text-muted); border-left-color: var(--border); }

.mm-explain {
    margin-top: 20px; background: #fff; border: 1px solid var(--border);
    border-radius: 4px; padding: 24px 22px;
}
.mm-explain h2 { margin: 6px 0 12px; color: var(--primary); font-size: 1.15rem; }
.mm-explain p { margin: 0 0 12px; color: var(--text); line-height: 1.65; max-width: 70ch; }
.mm-explain .stn-seclabel { color: var(--accent); }

.mm-table-wrap { overflow-x: auto; margin-top: 10px; }
.mm-table { border-collapse: collapse; font-size: .9rem; min-width: 300px; }
.mm-table th, .mm-table td {
    text-align: left; padding: 7px 22px 7px 0; border-bottom: 1px solid var(--border);
    font-variant-numeric: tabular-nums;
}
.mm-table th {
    font-size: 10px; letter-spacing: .1em; text-transform: uppercase; color: var(--text-muted);
}