/* --- Monochrome Pure Palette --- */
:root {
    --bg-color: #000000;

    /* Text */
    --text-main: #FFFFFF;         /* Pure white */
    --text-muted: #888888;        /* Medium gray for labels */

    /* Accent: WHITE (replaces gold/orange) */
    --accent: #FFFFFF;
    --accent-hover: #D4D4D4;      /* Very light gray for hover */

    /* UI */
    --border: #333333;            /* More visible borders */
    --input-bg: #111111;
    --input-border: #333333;
    --danger-hover: #ffffff;      /* Delete action turns white */
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    margin: 0;
    padding: 20px;
    -webkit-font-smoothing: antialiased;
}

.container { max-width: 950px; margin: 0 auto; }

h1 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 25px;
    color: var(--text-main);
    letter-spacing: -0.5px;
}

/* INPUT ZONE */
.input-group {
    background-color: var(--bg-color);
    padding: 10px 0 30px 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 20px;
    align-items: end;
    border-bottom: 1px solid var(--border);
    margin-bottom: 40px;
}

.field { display: flex; flex-direction: column; gap: 8px; }

.field label {
    font-size: 11px;
    color: var(--text-muted);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
}

input {
    background-color: var(--input-bg);
    border: 1px solid var(--input-border);
    color: var(--text-main);
    padding: 14px;
    border-radius: 6px;
    font-size: 14px;
    outline: none;
    transition: border-color 0.2s;
}

input:focus {
    border-color: var(--accent); /* White border while typing */
}

/* ADD BUTTON: White with black text */
button.btn-add {
    background-color: var(--accent);
    color: #000000;
    border: none;
    padding: 0 24px;
    height: 46px;
    border-radius: 6px;
    font-weight: 700;
    cursor: pointer;
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: background-color 0.2s;
}
button.btn-add:hover { background-color: var(--accent-hover); }

/* LAYOUT */
.grid {
    display: grid;
    gap: 40px;
    grid-template-columns: 1fr;
}
@media(min-width: 900px) { .grid { grid-template-columns: 2fr 1fr; } }

/* CARD */
.card {
    background-color: var(--bg-color);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
}

/* TABLE */
table { width: 100%; border-collapse: collapse; font-size: 14px; }

th {
    text-align: left;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    padding: 12px 8px;
    font-weight: 600;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

td {
    padding: 16px 8px;
    border-bottom: 1px solid var(--border);
    color: var(--text-main);
    font-variant-numeric: tabular-nums;
}
tr:last-child td { border-bottom: none; }

.val-consumption { color: #888888; }
/* KPI (unit cost): Now WHITE, no longer orange */
.val-kpi { color: var(--accent); font-weight: 700; }

/* DELETE BUTTON */
.btn-del {
    background: transparent;
    border: none;
    color: #444;
    font-size: 20px;
    cursor: pointer;
    padding: 8px;
    transition: color 0.2s;
}


.btn-del:hover { color: var(--danger-hover); }
/* --- ADDITION FOR EXCEL IMPORT --- */
.import-box {
    background-color: var(--input-bg);
    border: 1px dashed var(--border);
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 30px;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn { from { opacity: 0; transform: translateY(-10px); } to { opacity: 1; transform: translateY(0); } }

.paste-area {
    width: 100%;
    height: 120px;
    background-color: #080808; /* Darker than the normal input */
    color: var(--text-main);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 12px;
    font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
    font-size: 12px;
    resize: vertical;
    outline: none;
    display: block;
    margin-bottom: 15px;
    box-sizing: border-box;
}

.paste-area:focus { border-color: var(--accent); }

.import-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* Secondary button (Cancel/Close) */
.btn-sec {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    padding: 0 16px;
    height: 40px; /* Slightly smaller than btn-add */
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    font-size: 12px;
    text-transform: uppercase;
    transition: all 0.2s;
}
.btn-sec:hover { border-color: #fff; color: #fff; }