* { margin: 0; padding: 0; box-sizing: border-box; }
:root {
  --bg: #0f0f1a; --ink: #e0e0e0; --muted: #8b8fa3; --line: rgba(255,255,255,0.08);
  --card: rgba(255,255,255,0.04); --card-strong: rgba(255,255,255,0.07);
  --violet: #a78bfa; --violet-2: #7c3aed; --blue: #60a5fa; --blue-2: #2563eb;
  --teal: #2dd4bf; --teal-2: #0d9488; --amber: #fbbf24; --amber-2: #d97706;
  --ok: #34d399; --warn: #fbbf24; --bad: #f87171;
}
html { color-scheme: dark; }
body { font-family: 'Inter', -apple-system, 'Segoe UI', sans-serif; background: var(--bg); color: var(--ink); min-height: 100vh; padding: 20px 20px 60px; position: relative; overflow-x: hidden; }
a { color: inherit; }

.aurora { position: fixed; inset: 0; z-index: 0; pointer-events: none; overflow: hidden; }
.aurora-blob { position: absolute; border-radius: 50%; filter: blur(120px); opacity: 0.12; will-change: transform; }
.aurora-blob:nth-child(1) { width: 600px; height: 600px; background: radial-gradient(circle, #7c3aed 0%, transparent 70%); top: -10%; left: -5%; animation: drift1 25s ease-in-out infinite alternate; }
.aurora-blob:nth-child(2) { width: 500px; height: 500px; background: radial-gradient(circle, #2563eb 0%, transparent 70%); top: 30%; right: -10%; animation: drift2 30s ease-in-out infinite alternate; }
.aurora-blob:nth-child(3) { width: 700px; height: 500px; background: radial-gradient(circle, #06b6d4 0%, transparent 70%); bottom: -5%; left: 20%; animation: drift3 20s ease-in-out infinite alternate; }
.aurora-blob:nth-child(4) { width: 400px; height: 400px; background: radial-gradient(circle, #a78bfa 0%, transparent 70%); top: 50%; left: 50%; animation: drift4 35s ease-in-out infinite alternate; }
@keyframes drift1 { 0% { transform: translate(0,0) scale(1);} 50% { transform: translate(15vw,10vh) scale(1.2);} 100% { transform: translate(5vw,20vh) scale(0.9);} }
@keyframes drift2 { 0% { transform: translate(0,0) scale(1);} 50% { transform: translate(-20vw,-5vh) scale(1.15);} 100% { transform: translate(-10vw,15vh) scale(1.05);} }
@keyframes drift3 { 0% { transform: translate(0,0) scale(1);} 50% { transform: translate(10vw,-15vh) scale(1.3);} 100% { transform: translate(-5vw,-10vh) scale(0.95);} }
@keyframes drift4 { 0% { transform: translate(0,0) scale(1);} 50% { transform: translate(-15vw,10vh) scale(1.25);} 100% { transform: translate(10vw,-5vh) scale(1);} }
@media (prefers-reduced-motion: reduce) { .aurora-blob { animation: none; } }

.topbar, .page, .login-wrap { position: relative; z-index: 1; }
.topbar { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; max-width: 1200px; margin: 0 auto 22px; }
.topbar-left, .topbar-right { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; }
.brand { font-weight: 800; letter-spacing: -0.02em; text-decoration: none; font-size: 18px; }
.topnav { display: flex; gap: 6px; }
.topnav-link { text-decoration: none; font-weight: 600; font-size: 14px; padding: 6px 12px; border-radius: 999px; border: 1px solid var(--line); color: var(--muted); }
.topnav-link.is-active, .topnav-link:hover { color: #fff; background: var(--card-strong); }
.topnav-link.color-violet.is-active { border-color: var(--violet); }
.topnav-link.color-blue.is-active { border-color: var(--blue); }
.clock { font-variant-numeric: tabular-nums; font-weight: 700; font-size: 22px; }
.date-line { color: var(--muted); font-size: 14px; }
.logout { color: var(--muted); font-size: 13px; text-decoration: none; border: 1px solid var(--line); border-radius: 999px; padding: 5px 10px; }
.logout:hover { color: #fff; }

.page { max-width: 1200px; margin: 0 auto; display: grid; gap: 28px; }
.student { display: grid; gap: 16px; }
.student-head { display: grid; grid-template-columns: auto 1fr auto; gap: 14px; align-items: center; }
.avatar { width: 56px; height: 56px; border-radius: 50%; display: grid; place-items: center; font-weight: 800; font-size: 22px; color: #fff; overflow: hidden; flex-shrink: 0; }
.avatar img { width: 100%; height: 100%; object-fit: cover; }
.avatar.color-violet { background: linear-gradient(135deg, var(--violet), var(--violet-2)); }
.avatar.color-blue { background: linear-gradient(135deg, var(--blue), var(--blue-2)); }
.avatar.color-teal { background: linear-gradient(135deg, var(--teal), var(--teal-2)); }
.avatar.color-amber { background: linear-gradient(135deg, var(--amber), var(--amber-2)); }
.student-name { font-size: 24px; font-weight: 800; letter-spacing: -0.02em; }
.student-name a { text-decoration: none; }
.student-sub { color: var(--muted); font-size: 14px; margin-top: 2px; }
.student-status { justify-self: end; }
.badge { display: inline-block; padding: 5px 12px; border-radius: 999px; font-size: 12px; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; background: var(--card-strong); color: var(--muted); }
.badge.active { background: rgba(52,211,153,0.15); color: var(--ok); }
.badge.break { background: rgba(251,191,36,0.15); color: var(--warn); }
.badge.pill { background: rgba(167,139,250,0.18); color: var(--violet); }

.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 16px; align-items: start; }
.grid > .span-2 { grid-column: 1 / -1; }
/* karta na dwie kolumny (wiadomości); przy jednej kolumnie zostaje zwykła */
@media (min-width: 700px) { .grid > .wide { grid-column: span 2; } }
/* kilka kart w jednej komórce siatki (frekwencja + dni wolne) */
.grid > .stack { display: grid; gap: 16px; align-content: start; }
/* strona rodzica: dzieci obok siebie w kolumnach, w kolumnie karty jedna pod drugą
   wg ważności (plan dnia → oceny → sprawdziany → frekwencja → wiadomości) */
@media (min-width: 1000px) {
  .page.duo { grid-template-columns: repeat(auto-fit, minmax(430px, 1fr)); gap: 22px; align-items: start; }
  .page.duo .grid { grid-template-columns: minmax(0, 1fr); }
  .page.duo .grid > .span-2, .page.duo .grid > .wide { grid-column: auto; }
  .page.duo .student-head { position: sticky; top: 0; z-index: 3; padding: 10px 0; background: rgba(15,15,26,0.9); backdrop-filter: blur(8px); }
}
.card { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 18px 20px; backdrop-filter: blur(10px); }
/* plan dnia: pierwsza i najważniejsza karta, z paskiem w kolorze ucznia */
.card.primary { background: var(--card-strong); }
.color-violet .card.primary { box-shadow: inset 0 2px 0 var(--violet); }
.color-blue .card.primary { box-shadow: inset 0 2px 0 var(--blue); }
.color-teal .card.primary { box-shadow: inset 0 2px 0 var(--teal); }
.color-amber .card.primary { box-shadow: inset 0 2px 0 var(--amber); }
.card.loading { color: var(--muted); }
.card-title { font-size: 12px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); margin-bottom: 12px; display: flex; justify-content: space-between; align-items: baseline; gap: 10px; }
.card-title .count { font-weight: 600; letter-spacing: 0; text-transform: none; }
.empty { color: var(--muted); font-size: 14px; }

.now-block { display: grid; gap: 4px; margin-bottom: 12px; }
.now-label { font-size: 12px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.now-lesson { font-size: 28px; font-weight: 800; letter-spacing: -0.02em; line-height: 1.15; }
.now-room, .now-time { color: var(--muted); font-size: 14px; }
.now-empty { font-size: 18px; font-weight: 600; color: var(--muted); }
.progress { height: 6px; border-radius: 3px; background: var(--card-strong); overflow: hidden; margin: 6px 0 12px; }
.progress > i { display: block; height: 100%; }
.color-violet .progress > i { background: linear-gradient(90deg, var(--violet), var(--violet-2)); }
.color-blue .progress > i { background: linear-gradient(90deg, var(--blue), var(--blue-2)); }
.color-teal .progress > i { background: linear-gradient(90deg, var(--teal), var(--teal-2)); }
.color-amber .progress > i { background: linear-gradient(90deg, var(--amber), var(--amber-2)); }
.next { border-top: 1px solid var(--line); padding-top: 10px; margin-bottom: 12px; display: grid; gap: 2px; }
.next-lesson { font-weight: 600; }

.rows { display: grid; gap: 6px; }
.row { display: grid; grid-template-columns: 28px 104px 1fr auto; gap: 10px; align-items: baseline; padding: 7px 10px; border-radius: 10px; font-size: 14px; }
.row.is-current { background: var(--card-strong); font-weight: 600; }
.row.is-past { opacity: 0.45; }
.row .nr { color: var(--muted); font-variant-numeric: tabular-nums; }
.row .time { color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; }
.row .room { color: var(--muted); }
.tag { display: inline-block; font-size: 11px; font-weight: 700; letter-spacing: 0.05em; padding: 2px 7px; border-radius: 999px; margin-left: 6px; vertical-align: middle; }
.tag.cancel { background: rgba(248,113,113,0.18); color: var(--bad); }
.tag.change { background: rgba(251,191,36,0.18); color: var(--warn); }
.tag.exam { background: rgba(248,113,113,0.18); color: var(--bad); }
.tag.quiz { background: rgba(251,191,36,0.18); color: var(--warn); }
.tag.hw { background: rgba(96,165,250,0.18); color: var(--blue); }
.strike { text-decoration: line-through; opacity: 0.6; }

.week-wrap { overflow-x: auto; }
.week { width: 100%; border-collapse: collapse; font-size: 13px; }
.week th, .week td { padding: 6px 8px; border-bottom: 1px solid var(--line); vertical-align: top; text-align: left; }
.week th { font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); }
.week th.is-today, .week td.is-today { background: rgba(255,255,255,0.04); }
.week .t { color: var(--muted); white-space: nowrap; font-variant-numeric: tabular-nums; }
.week .cell-room { display: block; color: var(--muted); font-size: 11px; }
.week .cell-cancel { text-decoration: line-through; color: var(--bad); }
.week .cell-change { color: var(--warn); }
.week-switch { display: flex; gap: 6px; }
.week-switch button { background: transparent; color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 3px 10px; font: inherit; font-size: 12px; cursor: pointer; }
.week-switch button.is-on { color: #fff; background: var(--card-strong); }

.list { display: grid; gap: 8px; }
.item { display: grid; grid-template-columns: auto 1fr; gap: 10px; align-items: baseline; font-size: 14px; }
.item .when { color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; font-size: 13px; min-width: 52px; }
.item .what { line-height: 1.35; }
.item .sub { color: var(--muted); font-size: 13px; }
.grade { display: inline-grid; place-items: center; min-width: 40px; height: 40px; padding: 0 8px; border-radius: 10px; background: var(--card-strong); font-weight: 800; font-size: 18px; }
.grade.new { box-shadow: 0 0 0 2px rgba(52,211,153,0.5); }
.stats { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
.stat { background: var(--card-strong); border-radius: 10px; padding: 8px 12px; font-size: 13px; color: var(--muted); }
.stat b { display: block; font-size: 18px; color: var(--ink); }
.stat.bad b { color: var(--bad); }
.stat.warn b { color: var(--warn); }
.banner { text-align: center; padding: 26px; border-radius: 16px; background: var(--card); border: 1px solid var(--line); }
.banner .emoji { font-size: 40px; }
.banner h2 { margin-top: 6px; font-size: 22px; }
.banner p { color: var(--muted); margin-top: 4px; }
.sync-line { color: var(--muted); font-size: 12px; text-align: right; }
.sync-line.stale { color: var(--warn); }

.login-wrap { min-height: 80vh; display: grid; place-items: center; }
.login-card { width: min(380px, 100%); background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 28px; display: grid; gap: 14px; backdrop-filter: blur(10px); }
.login-card h1 { font-size: 24px; font-weight: 800; letter-spacing: -0.02em; }
.login-hint { color: var(--muted); font-size: 14px; }
.login-error { background: rgba(248,113,113,0.15); color: var(--bad); border-radius: 10px; padding: 10px 12px; font-size: 14px; }
.login-card label { display: grid; gap: 6px; font-size: 13px; color: var(--muted); }
.login-card input { font: inherit; padding: 11px 12px; border-radius: 10px; border: 1px solid var(--line); background: rgba(0,0,0,0.25); color: var(--ink); }
.login-card input:focus { outline: 2px solid var(--violet); outline-offset: 1px; }
.login-card button { font: inherit; font-weight: 700; padding: 12px; border-radius: 10px; border: 0; background: linear-gradient(135deg, var(--violet), var(--blue-2)); color: #fff; cursor: pointer; }
@media (max-width: 640px) {
  body { padding: 14px 12px 40px; }
  .student-head { grid-template-columns: auto 1fr; }
  .student-status { grid-column: 1 / -1; justify-self: start; }
  .row { grid-template-columns: 24px 98px 1fr; }
  .row .room { grid-column: 3; color: var(--muted); font-size: 12px; }
}

/* wiadomości i ogłoszenia: wiersz otwiera popup z pełną treścią */
.row-btn { display: grid; grid-template-columns: auto 1fr auto; gap: 10px; align-items: baseline; width: calc(100% + 16px); margin: 0 -8px; padding: 6px 8px; border: 0; border-radius: 10px; background: transparent; color: inherit; font: inherit; text-align: left; cursor: pointer; }
.row-btn:hover, .row-btn:focus-visible { background: var(--card-strong); outline: none; }
.row-btn .when { color: var(--muted); font-variant-numeric: tabular-nums; white-space: nowrap; font-size: 13px; min-width: 52px; }
.row-btn .what { min-width: 0; display: grid; gap: 1px; font-size: 14px; line-height: 1.35; }
.row-btn .ttl { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.row-btn .sub { color: var(--muted); font-size: 13px; }
.row-btn .preview { color: var(--ink); opacity: 0.7; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.row-btn .chev { color: var(--muted); font-size: 18px; line-height: 1; align-self: center; }
.tag.att { background: var(--card-strong); color: var(--muted); }

body.has-modal { overflow: hidden; }
.modal { position: fixed; inset: 0; z-index: 50; display: grid; place-items: center; padding: 20px; }
.modal[hidden] { display: none; }
.modal-backdrop { position: absolute; inset: 0; background: rgba(6, 6, 18, 0.72); backdrop-filter: blur(6px); }
.modal-card { position: relative; width: min(680px, 100%); max-height: min(86vh, 900px); overflow: auto; background: #16162a; border: 1px solid rgba(255,255,255,0.12); border-radius: 18px; padding: 24px 26px 26px; box-shadow: 0 30px 80px rgba(0,0,0,0.55); }
.modal-close { position: absolute; top: 12px; right: 12px; width: 34px; height: 34px; border-radius: 50%; border: 1px solid var(--line); background: var(--card-strong); color: var(--ink); font-size: 20px; line-height: 1; cursor: pointer; }
.modal-close:hover { color: #fff; }
.modal-kicker { font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); font-weight: 700; }
.modal-card h2 { font-size: 20px; font-weight: 800; letter-spacing: -0.01em; margin: 6px 40px 6px 0; line-height: 1.25; }
.modal-meta { color: var(--muted); font-size: 13px; margin-bottom: 14px; }
.modal-body { white-space: pre-line; line-height: 1.55; font-size: 15px; border-top: 1px solid var(--line); padding-top: 14px; overflow-wrap: anywhere; }
.modal-body a { color: var(--blue); }
/* załączniki wiadomości: nasza kopia albo link do dziennika */
.modal-files { border-top: 1px solid var(--line); margin-top: 16px; padding-top: 12px; display: grid; gap: 6px; }
.modal-files[hidden] { display: none; }
.files-title { font-size: 12px; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); }
.file { display: grid; grid-template-columns: auto 1fr auto; gap: 10px; align-items: center; padding: 9px 12px; border: 1px solid var(--line); border-radius: 10px; background: var(--card); text-decoration: none; font-size: 14px; }
.file:hover, .file:focus-visible { background: var(--card-strong); outline: none; }
.file .nm { overflow-wrap: anywhere; }
.file .size { color: var(--muted); font-size: 12px; white-space: nowrap; }
@media (max-width: 640px) {
  .modal { padding: 10px; }
  .modal-card { padding: 20px 18px 22px; }
}

/* kalendarz miesięczny: zadania domowe, kartkówki, sprawdziany, dni wolne */
.cal-nav { display: flex; gap: 8px; align-items: center; }
.cal-nav button { background: transparent; color: var(--muted); border: 1px solid var(--line); border-radius: 999px; width: 26px; height: 26px; font: inherit; font-size: 15px; line-height: 1; cursor: pointer; }
.cal-nav button:hover:not(:disabled) { color: #fff; background: var(--card-strong); }
.cal-nav button:disabled { opacity: 0.3; cursor: default; }
.cal-title { font-weight: 700; letter-spacing: 0; text-transform: none; color: var(--ink); min-width: 120px; text-align: center; }
.cal-wrap { overflow-x: auto; }
.cal { width: 100%; min-width: 560px; border-collapse: collapse; table-layout: fixed; font-size: 12px; }
.cal th { font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--muted); padding: 4px 6px; text-align: left; font-weight: 600; }
.cal th.is-off { opacity: 0.6; }
.cal td { border: 1px solid var(--line); vertical-align: top; height: 78px; padding: 4px 5px; }
.cal td.is-pad { border-color: transparent; }
.cal td.is-off { background: rgba(255,255,255,0.02); }
.cal td.is-past .d { opacity: 0.45; }
.cal td.is-free { background: rgba(167,139,250,0.08); }
.cal td.is-today { background: rgba(255,255,255,0.06); box-shadow: inset 0 0 0 1px rgba(255,255,255,0.3); }
.cal .d { display: block; text-align: right; font-weight: 700; font-variant-numeric: tabular-nums; margin-bottom: 2px; }
.cal-pill { display: block; margin-top: 3px; padding: 2px 6px; border-radius: 8px; font-size: 11px; line-height: 1.3; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.cal-pill i { display: block; font-style: normal; font-size: 9px; letter-spacing: 0.06em; text-transform: uppercase; opacity: 0.8; }
.cal-pill.hw { background: rgba(96,165,250,0.18); color: var(--blue); }
.cal-pill.quiz { background: rgba(251,191,36,0.18); color: var(--warn); }
.cal-pill.exam { background: rgba(248,113,113,0.18); color: var(--bad); }
.cal-pill.free { background: rgba(167,139,250,0.18); color: var(--violet); }
.cal-legend { display: flex; gap: 8px; margin-top: 10px; }
.cal-legend .cal-pill { display: inline-block; margin: 0; }

/* Telefony i tablety: bez rozmyć. Cztery animowane warstwy z filter: blur(120px) plus
   backdrop-filter na każdej karcie to sekundy przy pierwszym malowaniu i ścinanie przewijania;
   radialny gradient i tak jest miękki, więc bez blura wygląda prawie tak samo. */
@media (max-width: 900px) {
  .aurora-blob { filter: none; animation: none; will-change: auto; opacity: 0.22; }
  .aurora-blob:nth-child(3), .aurora-blob:nth-child(4) { display: none; }
  .card, .login-card { backdrop-filter: none; }
  .modal-backdrop { backdrop-filter: none; background: rgba(6, 6, 18, 0.92); }
}