/* ============================================================
   KS Investment CRM — Minimalist Theme
   Grey / White / Black only. No external fonts or CDNs —
   everything here is self-contained on your own server.
   ============================================================ */

:root {
    --color-black: #111111;
    --color-dark-grey: #333333;
    --color-mid-grey: #6e6e6e;
    --color-light-grey: #e5e5e5;
    --color-off-white: #fafafa;
    --color-white: #ffffff;

    --font-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

    --radius: 6px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 40px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: var(--font-base);
    background: var(--color-off-white);
    color: var(--color-dark-grey);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Headings: large + bold, per client requirement */
h1, h2, h3 {
    color: var(--color-black);
    font-weight: 800;
    margin: 0 0 var(--spacing-md);
}
h1 { font-size: 2rem; }        /* ~32px */
h2 { font-size: 1.5rem; }      /* ~24px */
h3 { font-size: 1.15rem; }
.label-strong {
    font-weight: 700;
    color: var(--color-black);
}

a { color: var(--color-black); }

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: var(--spacing-lg) var(--spacing-md);
}

/* Top bar */
.topbar {
    background: var(--color-black);
    color: var(--color-white);
    padding: var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}
.topbar .brand { font-weight: 800; font-size: 1.1rem; }
.topbar a { color: var(--color-white); text-decoration: none; font-weight: 600; }

/* Cards */
.card {
    background: var(--color-white);
    border: 1px solid var(--color-light-grey);
    border-radius: var(--radius);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

/* Stat blocks (MTD / YTD / Since Inception) */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}
.stat-box {
    background: var(--color-white);
    border: 1px solid var(--color-light-grey);
    border-radius: var(--radius);
    padding: var(--spacing-md);
    text-align: center;
}
.stat-box .stat-label {
    font-size: 0.85rem;
    color: var(--color-mid-grey);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 700;
}
.stat-box .stat-value {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-black);
}
.stat-positive { color: #1a1a1a; } /* kept grayscale intentionally; swap if client wants green/red later */
.stat-negative { color: #1a1a1a; text-decoration: underline; }

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
    background: var(--color-white);
}
th, td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-light-grey);
    font-size: 0.95rem;
}
th {
    font-weight: 700;
    color: var(--color-black);
    background: var(--color-off-white);
}

/* Forms */
label {
    display: block;
    font-weight: 700;
    color: var(--color-black);
    margin-bottom: 4px;
    margin-top: var(--spacing-md);
}
input, select, textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--color-mid-grey);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
    background: var(--color-white);
    color: var(--color-black);
}
input:focus, select:focus, textarea:focus {
    outline: 2px solid var(--color-black);
    outline-offset: 1px;
}

button, .btn {
    display: inline-block;
    background: var(--color-black);
    color: var(--color-white);
    border: none;
    padding: 12px 20px;
    border-radius: var(--radius);
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    margin-top: var(--spacing-md);
    text-decoration: none;
    text-align: center;
}
button:hover, .btn:hover { background: var(--color-dark-grey); }
.btn-secondary {
    background: var(--color-white);
    color: var(--color-black);
    border: 1px solid var(--color-black);
}
.btn-secondary:hover { background: var(--color-light-grey); }

.error-msg {
    background: var(--color-off-white);
    border-left: 4px solid var(--color-black);
    padding: var(--spacing-sm) var(--spacing-md);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

/* Mobile friendly */
@media (max-width: 640px) {
    .stats-grid { grid-template-columns: 1fr; }
    h1 { font-size: 1.6rem; }
    h2 { font-size: 1.25rem; }
    .topbar { flex-direction: column; align-items: flex-start; gap: var(--spacing-sm); }
    table, thead, tbody, th, td, tr { display: block; }
    thead { display: none; }
    tr { margin-bottom: var(--spacing-md); border: 1px solid var(--color-light-grey); border-radius: var(--radius); }
    td {
        border: none;
        border-bottom: 1px solid var(--color-light-grey);
        position: relative;
        padding-left: 45%;
    }
    td:before {
        content: attr(data-label);
        position: absolute;
        left: 12px;
        font-weight: 700;
        color: var(--color-black);
    }
}