:root {
    --radius: 8px;
    --bg: #f3f6fb;
    --panel: #ffffff;
    --panel-2: #f7f9fd;
    --text: #111827;
    --muted: #64748b;
    --line: #d9e1ef;
    --primary: #2563eb;
    --primary-strong: #1d4ed8;
    --danger: #dc2626;
    --success: #0f766e;
    --shadow: 0 18px 50px rgba(15, 23, 42, .10);
}

html[data-theme="dark"] {
    --bg: #0b1120;
    --panel: #111827;
    --panel-2: #172033;
    --text: #eef4ff;
    --muted: #94a3b8;
    --line: #273449;
    --primary: #60a5fa;
    --primary-strong: #3b82f6;
    --danger: #f87171;
    --success: #2dd4bf;
    --shadow: 0 18px 60px rgba(0, 0, 0, .28);
}

* { box-sizing: border-box; }
html, body { min-height: 100%; }
body {
    margin: 0;
    font-family: Arial, Helvetica, sans-serif;
    background: radial-gradient(circle at top left, color-mix(in srgb, var(--primary) 16%, transparent), transparent 32%), var(--bg);
    color: var(--text);
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, textarea { font: inherit; }

.topbar {
    min-height: 74px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 18px;
    padding: 14px 26px;
    border-bottom: 1px solid var(--line);
    background: color-mix(in srgb, var(--panel) 92%, transparent);
    backdrop-filter: blur(16px);
    position: sticky;
    top: 0;
    z-index: 20;
}

.brand { display: inline-flex; align-items: center; gap: 12px; font-weight: 800; letter-spacing: .04em; }
.brand img { width: 46px; height: 46px; border-radius: var(--radius); box-shadow: var(--shadow); }
.brand.big { align-items: flex-start; margin-bottom: 24px; }
.brand.big img { width: 72px; height: 72px; }
.brand h1 { margin: 0; font-size: 42px; }
.brand p { margin: 4px 0 0; color: var(--muted); }

.nav { display: flex; gap: 8px; padding: 4px; background: var(--panel-2); border: 1px solid var(--line); border-radius: var(--radius); }
.nav a { padding: 10px 16px; border-radius: var(--radius); color: var(--muted); font-weight: 700; }
.nav a.active, .nav a:hover { color: var(--text); background: var(--panel); }
.top-actions { display: flex; gap: 8px; align-items: center; }

.btn {
    border: 1px solid var(--line);
    background: var(--panel-2);
    color: var(--text);
    min-height: 42px;
    padding: 10px 14px;
    border-radius: var(--radius);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 700;
}
.btn:hover { border-color: var(--primary); }
.btn.primary { background: var(--primary); border-color: var(--primary); color: #fff; }
html[data-theme="dark"] .btn.primary { color: #06101f; }
.btn.ghost { background: transparent; }
.btn.danger { border-color: color-mix(in srgb, var(--danger) 40%, var(--line)); color: var(--danger); }
.btn.tiny { min-height: 34px; padding: 7px 10px; font-size: 13px; }
.btn.wide { width: 100%; margin-top: 16px; }
.button-row { display: flex; gap: 10px; flex-wrap: wrap; }

.login-page { display: grid; place-items: center; padding: 22px; }
.login-shell { width: min(460px, 100%); }
.login-card, .panel {
    background: color-mix(in srgb, var(--panel) 96%, transparent);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}
.login-card { padding: 30px; }
.hint { color: var(--muted); font-size: 13px; line-height: 1.5; }

.page-grid {
    display: grid;
    grid-template-columns: minmax(300px, 420px) minmax(560px, 1fr);
    grid-template-areas: "input calendar" "list calendar";
    gap: 18px;
    padding: 22px;
    max-width: 1680px;
    margin: 0 auto;
}
.input-panel { grid-area: input; }
.calendar-panel { grid-area: calendar; }
.list-panel { grid-area: list; }
.gallery-layout { display: grid; grid-template-columns: minmax(300px, 390px) 1fr; gap: 18px; padding: 22px; max-width: 1680px; margin: 0 auto; }
.panel { padding: 20px; }
.section-head h1, .section-head h2 { margin: 0; }
.section-head p { margin: 6px 0 18px; color: var(--muted); }

.form-stack { display: grid; gap: 14px; }
label { display: grid; gap: 7px; color: var(--muted); font-weight: 700; }
input, textarea {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    padding: 12px;
    background: var(--panel-2);
    color: var(--text);
    outline: none;
}
input:focus, textarea:focus { border-color: var(--primary); box-shadow: 0 0 0 3px color-mix(in srgb, var(--primary) 20%, transparent); }
.alert, .success { padding: 12px; border-radius: var(--radius); margin-bottom: 14px; font-weight: 700; }
.alert { background: color-mix(in srgb, var(--danger) 14%, transparent); color: var(--danger); border: 1px solid color-mix(in srgb, var(--danger) 35%, var(--line)); }
.success { background: color-mix(in srgb, var(--success) 14%, transparent); color: var(--success); border: 1px solid color-mix(in srgb, var(--success) 35%, var(--line)); }

.calendar-top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.calendar-top h2 { margin: 0; text-align: center; }
.calendar-grid { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); gap: 8px; }
.calendar-grid.names { margin-bottom: 8px; color: var(--muted); font-weight: 800; text-align: center; }
.day {
    min-height: 132px;
    border: 1px solid var(--line);
    background: var(--panel-2);
    border-radius: var(--radius);
    padding: 9px;
    overflow: hidden;
}
.day.muted { opacity: .35; }
.day.today { outline: 2px solid var(--primary); }
.day strong { display: block; margin-bottom: 8px; }
.event-pill {
    width: 100%;
    display: block;
    text-align: left;
    border: 0;
    border-radius: var(--radius);
    padding: 7px 8px;
    margin-bottom: 6px;
    background: color-mix(in srgb, var(--primary) 18%, var(--panel));
    color: var(--text);
    cursor: pointer;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.task-list { display: grid; gap: 10px; max-height: 520px; overflow: auto; padding-right: 4px; }
.task-card { display: grid; grid-template-columns: 1fr auto; gap: 12px; align-items: start; padding: 12px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--panel-2); }
.task-main { text-align: left; border: 0; background: transparent; color: var(--text); padding: 0; cursor: pointer; display: grid; gap: 6px; }
.task-main small { color: var(--muted); line-height: 1.45; }
.task-actions { display: flex; gap: 6px; align-items: center; }
.date-badge { color: var(--primary); font-weight: 800; font-size: 13px; }
.empty { color: var(--muted); }

.filters { display: grid; grid-template-columns: 180px 1fr auto auto; gap: 10px; margin-bottom: 18px; }
.photo-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 14px; }
.photo-card { border: 1px solid var(--line); background: var(--panel-2); border-radius: var(--radius); overflow: hidden; }
.photo-card img { width: 100%; height: 210px; object-fit: cover; background: var(--bg); }
.photo-info { padding: 12px; display: grid; gap: 8px; }
.photo-info form { margin-top: 2px; }

@media (max-width: 980px) {
    .topbar { position: static; flex-wrap: wrap; padding: 14px; }
    .nav { order: 3; width: 100%; display: grid; grid-template-columns: 1fr 1fr; }
    .nav a { text-align: center; }
    .page-grid, .gallery-layout { grid-template-columns: 1fr; grid-template-areas: none; padding: 14px; }
    .input-panel, .calendar-panel, .list-panel { grid-area: auto; }
    .calendar-grid { gap: 5px; }
    .day { min-height: 104px; padding: 7px; }
    .filters { grid-template-columns: 1fr; }
}

@media (max-width: 620px) {
    .top-actions { width: 100%; display: grid; grid-template-columns: 1fr 1fr; }
    .brand.big h1 { font-size: 34px; }
    .login-card, .panel { padding: 16px; }
    .calendar-panel { overflow-x: auto; }
    .calendar-grid { min-width: 720px; }
    .task-card { grid-template-columns: 1fr; }
    .task-actions { justify-content: flex-start; }
}