:root { color-scheme:dark; font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif; background:#0d1015; color:#f1f4f8; line-height:1.5; }
* { box-sizing:border-box; }
body { margin:0; }
[hidden] { display:none !important; }
a { color:#a6cfff; }
button,input,select { font:inherit; }
button,a,input,select { -webkit-tap-highlight-color:transparent; }
input:not([type=checkbox]) { display:block; width:100%; min-width:0; border:1px solid #465166; border-radius:9px; background:#111720; color:#f1f4f8; padding:10px 12px; margin-top:6px; }
input[type=checkbox] { width:19px; height:19px; accent-color:#6fa9ff; }
input:focus-visible,select:focus-visible,button:focus-visible,a:focus-visible { outline:3px solid #8bbcff; outline-offset:3px; }
h1,h2,h3,p { margin-top:0; }
h1 { font-size:clamp(26px,4vw,36px); line-height:1.2; margin-bottom:10px; }
h2 { font-size:21px; margin-bottom:7px; }
h3 { font-size:16px; margin-bottom:3px; }
.admin-main { width:min(1100px,100% - 40px); margin:36px auto 70px; }
.login-main { max-width:460px; margin-top:12vh; }
.card { padding:28px; background:#171d27; border:1px solid #303b4d; border-radius:18px; margin-bottom:24px; }
.page-heading,.section-heading,.next-step { display:flex; gap:20px; align-items:center; justify-content:space-between; }
.page-heading { margin-bottom:28px; }
.eyebrow { color:#83b7ff; font-size:13px; font-weight:650; letter-spacing:.08em; text-transform:uppercase; margin-bottom:9px; }
.muted { color:#afb9c9; }
.small { font-size:14px; }
.timezone,.count { white-space:nowrap; background:#253653; color:#bcd7ff; border-radius:99px; padding:8px 13px; font-size:14px; }
.stack { display:grid; gap:24px; }
.login-card .stack { gap:12px; }
fieldset { border:0; padding:0; margin:0; min-width:0; }
legend { font-size:16px; font-weight:650; margin-bottom:12px; }
.day-options { display:flex; gap:10px; flex-wrap:wrap; }
.day-option { position:relative; }
.day-option input { position:absolute; opacity:0; }
.day-option span { display:block; border:1px solid #53627b; border-radius:10px; padding:11px 16px; cursor:pointer; }
.day-option input:checked + span { background:#244b80; border-color:#7eb4ff; color:#fff; }
.day-option input:focus-visible + span { outline:3px solid #8bbcff; outline-offset:3px; }
.workday-fields { display:grid; grid-template-columns:1fr 1fr 1fr; gap:20px; }
.workday-section,.breaks-section { padding-top:20px; border-top:1px solid #303b4d; }
.day-editor-panel { padding:18px; border:1px solid #3f536e; border-radius:12px; background:#101925; min-width:0; }
.day-editor-panel .breaks-section { margin-top:16px; }
.break-actions { display:flex; align-items:center; flex-wrap:wrap; gap:8px; }
.break-actions > span { margin-right:5px; }
.break-action-feedback { margin:12px 0 0; padding:10px 12px; border-radius:8px; background:#20352f; color:#bce9d5; font-size:13px; }
.break-row { display:grid; grid-template-columns:110px 1fr 1fr auto; align-items:end; gap:16px; margin-bottom:14px; padding:14px; border:1px solid #354155; border-radius:10px; background:#121923; }
.break-meta { align-self:center; display:grid; gap:2px; }
.break-number { font-size:14px; color:#e1bd8b; }
.break-length { font-size:12px; color:#aebfd4; }
.break-row.is-selected { border-color:#9e7b49; }
.availability-preview { padding:22px; border:1px solid #47638b; border-radius:14px; background:#111b29; }
.availability-preview .section-heading { gap:12px; }
.availability-preview h3 { font-size:19px; }
.preview-status { color:#b9dfcd; font-size:12px; border:1px solid #47695e; border-radius:99px; padding:5px 10px; white-space:nowrap; }
.preview-status.unsaved { color:#ffdc9f; border-color:#826a3d; }
.preview-summary { color:#e0eaff; font-size:14px; font-weight:600; margin:18px 0; }
.preview-grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(150px,1fr)); gap:10px; }
.preview-day { padding:13px 10px; border:1px solid #35465e; border-radius:10px; background:#182436; min-width:0; }
.preview-day h4 { margin:0 0 12px; font-size:13px; }
.preview-slots { display:grid; gap:6px; }
.preview-slot { display:block; border:1px solid #3d638b; background:#1c3551; color:#d6eaff; padding:7px 4px; border-radius:6px; font-size:12px; text-align:center; font-variant-numeric:tabular-nums; }
.preview-break { grid-column:1/-1; display:grid; gap:2px; padding:8px 4px; border:1px dashed #796341; border-radius:6px; background:#30291e; color:#f0d2a5; font-size:12px; text-align:center; font-variant-numeric:tabular-nums; }
.preview-break-label { font-size:11px; color:#d3ba95; }
.preview-note { margin:16px 0 0; }
button:disabled { cursor:default; opacity:.5; }
.button { display:inline-flex; align-items:center; justify-content:center; text-align:center; border:1px solid transparent; border-radius:9px; padding:10px 15px; min-height:44px; font:inherit; font-size:14px; font-weight:600; cursor:pointer; text-decoration:none; white-space:normal; }
.primary { background:#8abbff; color:#10213b; }
.primary:hover { background:#b3d2ff; }
.secondary { border-color:#647795; background:transparent; color:#d6e6ff; }
.subtle { background:transparent; color:#ffb9bb; border-color:#78474d; }
.form-actions { text-align:right; }
.message { padding:16px 20px; border:1px solid #586b86; border-radius:10px; }
.error { border-color:#d37c82; background:#361f2b; color:#ffd5d7; }
.success { border-color:#5aa68c; background:#163c35; color:#b8f5da; }
.add-student-form { display:grid; grid-template-columns:2fr 1fr 1fr auto; gap:16px; align-items:end; margin:24px 0; }
.student-row { display:flex; gap:20px; align-items:center; justify-content:space-between; border-top:1px solid #303b4d; padding:20px 0; }
.student-row p { margin-bottom:0; }
.student-actions { display:flex; align-items:center; gap:8px; flex-wrap:wrap; justify-content:flex-end; }
.student-actions form { margin:0; }
code { overflow-wrap:anywhere; }
@media(max-width:800px) { .add-student-form { grid-template-columns:1fr 1fr; } .student-row { align-items:flex-start; flex-direction:column; gap:12px; } .student-actions { justify-content:flex-start; } .workday-fields { grid-template-columns:1fr 1fr; } .break-row { grid-template-columns:1fr 1fr; } .break-meta { grid-column:1/-1; display:flex; align-items:center; gap:10px; } .break-row .remove-break { grid-column:1/-1; justify-self:start; } }
@media(max-width:480px) { .admin-main { width:calc(100% - 24px); margin-top:22px; } .card { padding:18px; border-radius:14px; } .page-heading,.section-heading,.next-step { flex-direction:column; align-items:flex-start; gap:12px; } .add-student-form,.workday-fields { grid-template-columns:1fr; } .day-options { gap:7px; } .day-option span { padding:10px 12px; } .student-actions { width:100%; } .student-actions .button { flex-grow:1; } .form-actions .button { width:100%; } .day-editor-panel { padding:14px 10px; } .break-row { padding:12px; gap:12px; } .break-row label { font-size:13px; min-width:0; } .break-row .time-trigger { padding:9px; gap:6px; } .break-row .time-clock { display:none; } .break-row .time-value { font-size:17px; } .break-row .time-chevron { width:12px; } .availability-preview { padding:15px; } .preview-grid { grid-template-columns:minmax(0,1fr); } .preview-slots { grid-template-columns:1fr 1fr; } }