/* Shared base styles across Schoolistry pages. Vanilla CSS, no framework. */

:root {
    --bg: #f6f7f9;
    --panel: #ffffff;
    --border: #e1e4e8;
    --text: #1a1d23;
    --text-muted: #6b7280;
    --accent: #2f6fed;
    --accent-hover: #244fc4;
    --danger: #d93025;
    --radius: 8px;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
}

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

.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 24px;
}

.panel {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
}

.btn {
    display: inline-block;
    padding: 9px 16px;
    border-radius: var(--radius);
    border: 1px solid transparent;
    background: var(--accent);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
}
.btn:hover { background: var(--accent-hover); }
.btn:disabled { opacity: 0.6; cursor: not-allowed; }
.btn.secondary { background: transparent; color: var(--accent); border-color: var(--accent); }
.btn.danger { background: var(--danger); }

.field { margin-bottom: 14px; }
.field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 5px; color: var(--text-muted); }
.field input, .field select, .field textarea {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
}

.error-text { color: var(--danger); font-size: 13px; margin-top: 8px; }
.muted { color: var(--text-muted); font-size: 13px; }

.top-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 12px 24px;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
}
.top-nav .brand { font-weight: 700; font-size: 16px; }
.top-nav nav a { margin-left: 16px; font-size: 14px; text-decoration: none; color: var(--text); }
.top-nav nav a.active { color: var(--accent); font-weight: 600; }

.chip-row { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.chip {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 5px 10px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 999px;
    font-size: 13px;
    cursor: grab;
}
.chip .rm { color: var(--danger); cursor: pointer; font-weight: 700; }

table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--text-muted); font-weight: 600; font-size: 12px; text-transform: uppercase; }

.modal-overlay {
    display: none;
    position: fixed; inset: 0;
    background: rgba(0,0,0,0.4);
    align-items: center; justify-content: center;
    z-index: 100;
}
.modal-overlay.open { display: flex; }
.modal-box {
    background: var(--panel);
    border-radius: var(--radius);
    padding: 20px;
    width: 420px;
    max-width: 92vw;
    max-height: 85vh;
    overflow-y: auto;
}
.modal-box h3 { margin-top: 0; }
.modal-footer { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }

.stat-tile {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 16px 20px;
    min-width: 130px;
}
.stat-tile .stat-value { font-size: 28px; font-weight: 800; line-height: 1.1; }
.stat-tile .stat-label { font-size: 12px; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: .03em; margin-top: 4px; }
.stat-tile.present .stat-value { color: #16a34a; }
.stat-tile.absent .stat-value { color: var(--danger); }
.stat-tile.pending .stat-value { color: #a16207; }