:root {
    --green-dark: #1f5d2b;
    --green: #5aa832;
    --green-light: #e4f3d9;
    --bg: #f3faf0;
    --text: #23331f;
}
* { box-sizing: border-box; }
body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: "Nunito", system-ui, sans-serif;
}
.container { max-width: 1100px; margin: 0 auto; padding: 24px 16px; }
h1 { color: var(--green-dark); font-weight: 800; margin: 0 0 20px; }
.table-wrap { overflow-x: auto; }
table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 6px;
    min-width: 760px;
}
th {
    background: var(--green-dark);
    color: #fff;
    padding: 10px;
    border-radius: 10px;
}
td { background: #fff; border-radius: 10px; padding: 8px; vertical-align: top; height: 72px;}
td.time { background: var(--green-light); color: var(--green-dark); font-weight: 700; text-align: center; }
.lesson { padding: 6px 8px; margin-bottom: 6px; border-left: 4px solid var(--green); background: var(--green-light); border-radius: 6px; }
.lesson b { display: block; color: var(--green-dark); }
.lesson .groups { font-size: 0.9em; }
.lesson small { color: #5b6b57; }

.site-header { background: #fff; border-bottom: 4px solid var(--green); }
.header-inner { display: flex; align-items: center; gap: 16px; }
.logo { height: 72px; width: auto; }
.school-name { font-size: 1.8rem; font-weight: 800; color: var(--green-dark); line-height: 1.1; }
.address { color: #5b6b57; }

.summary { margin-bottom: 20px; }
.summary-today { font-size: 1.2rem; color: var(--green-dark); margin-bottom: 8px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip { background: var(--green-light); color: var(--green-dark); border: 2px solid var(--green); border-radius: 999px; padding: 4px 14px; font-weight: 700; }

.year { font-size: 1.2rem; color: var(--green-dark); margin: -8px 0 16px; }
.textbook { display: grid; grid-template-columns: max-content 1fr; gap: 4px 16px; background: #fff; border: 2px solid var(--green-light); border-radius: 12px; padding: 12px 16px; margin: 0 0 20px; }
.textbook dt { color: #5b6b57; font-weight: 700; }
.textbook dd { margin: 0; }

.plan td, .plan th { height: auto; }
.plan .module-row td { background: var(--green-dark); color: #fff; font-weight: 800; text-align: center; }
.plan .vacation-row td { background: #fff; border: 2px dashed var(--green); color: #5b6b57; font-style: italic; text-align: center; }
.plan .week-cell { width: 44px; padding: 4px; text-align: center; color: var(--green-dark); font-weight: 700; }
.plan .vert { display: inline-block; writing-mode: vertical-rl; transform: rotate(180deg); white-space: nowrap; }
.plan .row-test td { font-weight: 800; }
.plan .row-review td { font-style: italic; }
.plan .m9, .plan .m9 td { background: #fff3e0; }
.plan .m10, .plan .m10 td { background: #ffdca8; }
.plan .m11, .plan .m11 td { background: #ffc078; }
.plan .m12, .plan .m12 td { background: #e3f0fb; }
.plan .m1, .plan .m1 td { background: #bcd9f3; }
.plan .m2, .plan .m2 td { background: #8fc0ea; }
.plan .m3, .plan .m3 td { background: #eaf6e2; }
.plan .m4, .plan .m4 td { background: #cdebb8; }
.plan .m5, .plan .m5 td { background: #a8dc8a; }

.plan tr.current td { font-weight: 800; box-shadow: inset 0 3px 0 var(--green-dark), inset 0 -3px 0 var(--green-dark); }

.lesson a { color: var(--green-dark); text-decoration: underline; text-decoration-thickness: 2px; text-underline-offset: 3px; }
.lesson a::after { content: " ›"; font-weight: 800; }
.lesson a:hover { background: var(--green-light); }
.lesson:has(a) { background: #fff; border-left-color: var(--green-dark); box-shadow: 0 0 0 2px var(--green); }

.lesson-page { max-width: 860px; }
.lesson-meta { color: #5b6b57; margin: -8px 0 20px; }
.lesson-section { background: #fff; border-radius: 12px; padding: 4px 20px 12px; margin-bottom: 16px; }
.lesson-section h2 { color: var(--green-dark); font-size: 1.2rem; border-bottom: 2px solid var(--green-light); padding-bottom: 6px; }
.md img { max-width: 100%; }
.md pre { overflow-x: auto; }

.plan td a { color: inherit; text-decoration: none; }
.plan td a:hover { text-decoration: underline; }

.lesson-form { display: flex; flex-direction: column; gap: 6px; max-width: 860px; }
.lesson-form label { font-weight: 700; color: var(--green-dark); margin-top: 10px; }
.lesson-form input, .lesson-form textarea { font: inherit; padding: 8px 10px; border: 2px solid var(--green-light); border-radius: 10px; width: 100%; }
.lesson-form textarea { resize: vertical; font-family: Consolas, monospace; }
.form-hint { color: #5b6b57; font-size: 0.9rem; margin: 4px 0 0; }
.preview { background: #fff; border: 2px dashed var(--green); border-radius: 10px; padding: 4px 16px; }
.form-buttons { display: flex; gap: 16px; align-items: center; margin-top: 16px; }
.btn-save { background: var(--green-dark); color: #fff; border: 0; border-radius: 10px; padding: 10px 24px; font: inherit; font-weight: 800; cursor: pointer; }

.cheatsheet { background: #fff; border: 2px solid var(--green-light); border-radius: 10px; padding: 8px 14px; margin: 4px 0; }
.cheatsheet summary { cursor: pointer; font-weight: 700; color: var(--green-dark); }
.cheatsheet table { margin-top: 8px; border-collapse: collapse; }
.cheatsheet td { padding: 3px 14px 3px 0; vertical-align: top; }

.auth { margin-left: auto; display: flex; align-items: center; gap: 12px; color: var(--green-dark); font-weight: 700; }
.auth form { margin: 0; }
.auth a, .auth button { background: none; border: 2px solid var(--green-dark); border-radius: 10px; padding: 6px 14px; font: inherit; font-weight: 700; color: var(--green-dark); cursor: pointer; text-decoration: none; }
.auth a:hover, .auth button:hover { background: var(--green-light); }

.due { font-weight: 800; color: var(--green-dark); }

.btn-print { background: none; border: 2px solid var(--green-dark); border-radius: 10px; padding: 6px 14px; font: inherit; font-weight: 700; color: var(--green-dark); cursor: pointer; }
@media print {
    body { background: #fff; }
    .site-header, .no-print { display: none !important; }
    .lesson-page { max-width: none; padding: 0; }
    .lesson-section { padding: 0 0 8px; }
    .lesson-section h2 { break-after: avoid; }
    .md pre, .md img { break-inside: avoid; }
}

.md blockquote { margin: 4px 0 14px; padding: 2px 12px; border-left: 3px solid #cfd8cb; color: #6b7767; font-size: 0.9em; }
.btn-fill { background: var(--green-light); color: var(--green-dark); border: 2px solid var(--green); border-radius: 10px; padding: 8px 18px; font: inherit; font-weight: 700; cursor: pointer; }

.prompt-dialog { width: 92%; max-width: 760px; border: 3px solid var(--green); border-radius: 14px; padding: 16px 20px; }
.prompt-dialog::backdrop { background: rgba(0, 0, 0, 0.4); }
.prompt-grid { display: grid; grid-template-columns: max-content 1fr; gap: 8px 12px; align-items: center; }
.prompt-grid input, .prompt-grid select, .prompt-dialog textarea { font: inherit; padding: 6px 10px; border: 2px solid var(--green-light); border-radius: 8px; width: 100%; }
.prompt-dialog textarea { margin-top: 12px; font-family: Consolas, monospace; }

.grade-table { border-collapse: collapse; width: 100%; margin-bottom: 12px; }
.grade-table th, .grade-table td { text-align: left; padding: 6px 10px; border-bottom: 1px solid var(--green-light); }

.fancy-select {
    appearance: none;
    -webkit-appearance: none;
    width: 100%;
    background: #fff url("data:image/svg+xml;utf8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='9' viewBox='0 0 14 9'%3E%3Cpath d='M1 1l6 6 6-6' fill='none' stroke='%231f5d2b' stroke-width='2' stroke-linecap='round'/%3E%3C/svg%3E") no-repeat right 12px center;
    border: 2px solid var(--green);
    border-radius: 10px;
    padding: 8px 36px 8px 12px;
    font: inherit;
    color: var(--text);
    cursor: pointer;
}
.fancy-select:hover, .fancy-select:focus { border-color: var(--green-dark); outline: none; box-shadow: 0 0 0 3px var(--green-light); }

.gradebook-filter { display: flex; flex-wrap: wrap; align-items: center; gap: 12px; margin-bottom: 16px; }
.gradebook-filter .fancy-select { width: auto; }
.gradebook { border-collapse: collapse; background: #fff; }
.gradebook th, .gradebook td { border: 1px solid var(--green-light); padding: 6px 10px; text-align: center; white-space: nowrap; }
.gradebook th { background: var(--green-dark); color: #fff; }
.gradebook th a { color: #fff; }
.gradebook .gb-name { text-align: left; font-weight: 700; background: var(--green-light); position: sticky; left: 0; }
.gb-date { font-size: 0.75rem; opacity: 0.85; }
.gradebook.hide-empty .no-grades { display: none; }

.switch { display: inline-flex; align-items: center; gap: 10px; cursor: pointer; font-weight: 700; color: var(--green-dark); }
.switch input { position: absolute; opacity: 0; width: 0; height: 0; }
.slider { position: relative; width: 46px; height: 26px; border-radius: 13px; background: #cfd8cb; transition: background 0.2s; flex-shrink: 0; }
.slider::before { content: ""; position: absolute; top: 3px; left: 3px; width: 20px; height: 20px; border-radius: 50%; background: #fff; transition: transform 0.2s; box-shadow: 0 1px 3px rgba(0, 0, 0, 0.3); }
.switch input:checked + .slider { background: var(--green); }
.switch input:checked + .slider::before { transform: translateX(20px); }
.switch input:focus-visible + .slider { outline: 3px solid var(--green-light); outline-offset: 2px; }

.plan-create { display: inline; margin: 0 0 0 6px; }
.plan-create button { border: 2px solid var(--green); background: #fff; color: var(--green-dark); border-radius: 50%; width: 24px; height: 24px; line-height: 1; font-weight: 800; cursor: pointer; }

.textbook-form { display: grid; grid-template-columns: max-content 1fr; gap: 6px 16px; align-items: center; background: #fff; border: 2px solid var(--green-light); border-radius: 12px; padding: 12px 16px; margin: 0 0 20px; }
.textbook-form label { color: #5b6b57; font-weight: 700; }
.textbook-form input { font: inherit; padding: 6px 10px; border: 2px solid var(--green-light); border-radius: 8px; width: 100%; }
.textbook-form input.missing { background: #fff8e6; border-color: #f0a030; }
.textbook-form .btn-save { grid-column: 2; justify-self: start; }

.cal-legend { display: flex; flex-wrap: wrap; gap: 8px; margin: 8px 0 16px; }
.cal-legend span { padding: 4px 12px; border-radius: 8px; border: 1px solid #d0d8cc; font-size: 0.9rem; }
.cal-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 16px; }
.cal-month { background: #fff; border-radius: 12px; padding: 8px 12px 12px; }
.cal-month h2 { font-size: 1.05rem; color: var(--green-dark); margin: 4px 0 8px; }
.cal-month table { width: 100%; border-collapse: separate; border-spacing: 2px; table-layout: fixed; min-width: 0; }
.cal-month th { background: none; color: #5b6b57; font-size: 0.75rem; padding: 2px; border-radius: 0; }
.cal-month td { text-align: center; padding: 6px 0; border-radius: 6px; height: auto; }
.cal-working { background: #fff; }
.cal-weekend { background: #fde4ea; }
.cal-vacation { background: #fff3b0; }
.cal-holiday { background: #bfe8bc; }
.cal-none { background: repeating-linear-gradient(45deg, #fff, #fff 4px, #e8e8e8 4px, #e8e8e8 8px); }
.cal-out { color: #b9c2b5; }
.cal-today { outline: 3px solid var(--green-dark); font-weight: 800; }

.brand { display: flex; align-items: center; gap: 16px; color: inherit; text-decoration: none; }
.main-nav { display: flex; flex-wrap: wrap; gap: 16px; margin-left: 24px; }
.main-nav a { color: var(--green-dark); font-weight: 700; text-decoration: none; }
.main-nav a:hover { text-decoration: underline; }

.lesson-nav { display: flex; justify-content: space-between; gap: 16px; margin: 0 0 16px; }
.lesson-nav a { color: var(--green-dark); font-weight: 700; text-decoration: none; }
.lesson-nav a:hover { text-decoration: underline; }

.approval { margin: 16px 0; font-weight: 700; color: var(--green-dark); }
.approval a { text-decoration: none; margin-left: 8px; }

style.css: .reflow-form { margin: 0 0 16px; }

.swap-buttons { display: inline-flex; gap: 4px; margin-left: 10px; vertical-align: middle; }
.swap-buttons form { display: inline; margin: 0; }
.swap-buttons button { border: 1px solid var(--green); background: #fff; color: var(--green-dark); border-radius: 6px; width: 26px; height: 26px; cursor: pointer; }
.swap-buttons button:hover { background: var(--green-light); }

.undated { background: #ffd6d6; border: 2px solid #b3261e; border-radius: 12px; padding: 4px 16px 8px; margin: 16px 0; }
.undated-title { color: #b3261e; font-weight: 800; }