:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --surface: #ffffff;
  --surface-muted: #f7f8fc;
  --line: #e8eaf1;
  --line-strong: #dcdfea;
  --ink: #1e2433;
  --ink-muted: #72798c;
  --ink-faint: #a4a9b7;
  --accent: #5b57e8;
  --accent-strong: #4a46d8;
  --accent-soft: #eeedff;
  --green: #2da978;
  --green-soft: #e6f7ef;
  --amber: #d1882f;
  --amber-soft: #fff4e1;
  --shadow: 0 18px 45px rgba(33, 39, 73, 0.08);
  --shadow-soft: 0 4px 18px rgba(33, 39, 73, 0.05);
  --radius-lg: 22px;
  --radius-md: 13px;
  --radius-sm: 9px;
  font-family: 'DM Sans', 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --bg: #171922;
    --surface: #20232e;
    --surface-muted: #272a37;
    --line: #343846;
    --line-strong: #45495a;
    --ink: #f2f3f8;
    --ink-muted: #a9aec0;
    --ink-faint: #73798c;
    --accent: #8b87ff;
    --accent-strong: #9c98ff;
    --accent-soft: #302e57;
    --green: #56d09b;
    --green-soft: #1f3d32;
    --amber: #ecaa58;
    --amber-soft: #44351f;
    --shadow: 0 18px 45px rgba(0, 0, 0, 0.24);
    --shadow-soft: 0 4px 18px rgba(0, 0, 0, 0.14);
  }
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--ink); }
body { min-width: 320px; }
.auth-view { min-height: 100vh; display: grid; place-items: center; padding: 24px; background: var(--bg); }
.auth-view[hidden] { display: none; }
.auth-card { width: min(390px, 100%); padding: 32px; border: 1px solid var(--line); border-radius: 20px; background: var(--surface); box-shadow: var(--shadow); }
.auth-brand { padding: 0 0 28px; }
.auth-kicker { margin: 0 0 8px; color: var(--accent); font-size: 11px; font-weight: 700; letter-spacing: .12em; }
.auth-card h2 { margin: 0 0 24px; font-size: 25px; }
.auth-form { display: grid; gap: 16px; }
.auth-form label { display: grid; gap: 7px; color: var(--ink-muted); font-size: 12px; }
.auth-form input { width: 100%; padding: 12px; border: 1px solid var(--line-strong); border-radius: 9px; outline: 0; color: var(--ink); background: var(--surface-muted); font-size: 14px; }
.auth-form input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 12%, transparent); }
.auth-form .primary-button { width: 100%; margin-top: 4px; padding: 12px; }
.auth-error { margin: -3px 0 0; color: #c4453e; font-size: 12px; }
.logout-button { margin-left: auto; white-space: nowrap; }
.app-shell[hidden] { display: none; }
button, input, select { font: inherit; }
button { color: inherit; }
button:focus-visible, input:focus-visible, select:focus-visible { outline: 3px solid color-mix(in srgb, var(--accent) 25%, transparent); outline-offset: 2px; }

.app-shell { display: flex; min-height: 100vh; }
.sidebar { width: 292px; flex: 0 0 292px; display: flex; flex-direction: column; padding: 28px 20px 20px; background: var(--surface); border-right: 1px solid var(--line); }
.brand { display: flex; align-items: center; gap: 11px; padding: 0 10px 35px; }
.brand-mark { display: grid; place-items: center; width: 40px; height: 40px; color: #fff; background: linear-gradient(145deg, #7571ff, #4f4bd8); border-radius: 12px; box-shadow: 0 8px 18px rgba(91, 87, 232, .22); }
.brand-mark svg { width: 22px; height: 22px; }
.eyebrow { margin: 0 0 2px; color: var(--accent); font-size: 9px; font-weight: 700; letter-spacing: .17em; }
.brand h1 { margin: 0; font-size: 17px; letter-spacing: -.02em; }
.brand-version { color: var(--ink-muted); font-size: .58em; font-weight: 600; letter-spacing: 0; white-space: nowrap; }
.sidebar-section-title { display: flex; align-items: center; justify-content: space-between; padding: 0 9px 12px; color: var(--ink-muted); font-size: 12px; font-weight: 600; }
.icon-button { display: inline-grid; place-items: center; width: 30px; height: 30px; padding: 0; border: 0; border-radius: 8px; background: transparent; cursor: pointer; color: var(--ink-muted); transition: .18s ease; }
.icon-button:hover { color: var(--accent); background: var(--accent-soft); }
.icon-button svg { width: 17px; height: 17px; }
.project-list { display: flex; flex-direction: column; gap: 4px; }
.project-row { position: relative; display: flex; align-items: center; gap: 9px; min-height: 43px; padding: 7px 8px 7px 12px; border: 1px solid transparent; border-radius: 11px; cursor: pointer; transition: .18s ease; }
.project-row:hover { background: var(--surface-muted); }
.project-row.is-active { color: var(--accent); background: var(--accent-soft); border-color: color-mix(in srgb, var(--accent) 10%, transparent); }
.project-row.is-dragging { opacity: .5; }
.project-row.is-over { border-color: var(--accent); }
.project-dot { width: 8px; height: 8px; flex: 0 0 8px; border: 2px solid currentColor; border-radius: 50%; opacity: .7; }
.project-row.is-active .project-dot { background: currentColor; opacity: 1; }
.project-row-name { min-width: 0; flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13px; font-weight: 500; }
.project-row-count { color: var(--ink-faint); font-size: 11px; }
.project-row.is-active .project-row-count { color: var(--accent); opacity: .7; }
.project-row-actions { display: flex; gap: 0; opacity: 0; transition: opacity .18s ease; }
.project-row:hover .project-row-actions, .project-row:focus-within .project-row-actions { opacity: 1; }
.project-row-actions .icon-button { width: 25px; height: 25px; }
.project-row-actions svg { width: 14px; height: 14px; }
.sidebar-empty { padding: 4px 10px 20px; color: var(--ink-muted); font-size: 12px; }
.sidebar-empty p { margin: 0 0 8px; }
.text-button { padding: 0; border: 0; background: none; color: var(--accent); font-size: 12px; cursor: pointer; }
.text-button:hover { text-decoration: underline; }
.sidebar-bottom { display: flex; flex-direction: column; gap: 3px; margin-top: auto; padding-top: 20px; border-top: 1px solid var(--line); }
.sidebar-action { display: flex; align-items: center; gap: 10px; width: 100%; padding: 9px 10px; border: 0; border-radius: 9px; background: transparent; color: var(--ink-muted); text-align: left; font-size: 12px; cursor: pointer; transition: .18s ease; }
.sidebar-action:hover { color: var(--accent); background: var(--accent-soft); }
.sidebar-action svg { width: 16px; height: 16px; }
.local-note { display: flex; align-items: center; gap: 7px; margin: 13px 10px 0; color: var(--ink-faint); font-size: 10px; }
.status-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green); box-shadow: 0 0 0 3px var(--green-soft); }

.main-content { min-width: 0; flex: 1; }
.topbar { display: flex; align-items: center; gap: 20px; height: 80px; padding: 0 clamp(22px, 5vw, 72px); border-bottom: 1px solid var(--line); }
.mobile-brand { display: none; align-items: center; gap: 8px; font-weight: 600; }
.search-box { display: flex; align-items: center; gap: 10px; width: min(450px, 100%); padding: 9px 11px; color: var(--ink-faint); background: var(--surface); border: 1px solid var(--line); border-radius: 10px; transition: .18s ease; }
.search-box:focus-within { border-color: color-mix(in srgb, var(--accent) 50%, var(--line)); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 10%, transparent); }
.search-box svg { width: 17px; height: 17px; flex: 0 0 17px; }
.search-box input { width: 100%; min-width: 0; padding: 0; border: 0; outline: 0; color: var(--ink); background: transparent; font-size: 12px; }
.search-box input::placeholder { color: var(--ink-faint); }
kbd { padding: 3px 5px; border: 1px solid var(--line-strong); border-radius: 4px; color: var(--ink-faint); background: var(--surface-muted); font-size: 10px; white-space: nowrap; }
.topbar-caption { margin-left: auto; color: var(--ink-faint); font-size: 11px; white-space: nowrap; }
.content-wrap { max-width: 1040px; margin: 0 auto; padding: clamp(28px, 5vw, 64px) clamp(22px, 5vw, 72px) 80px; }
.reminder-area { margin-bottom: 18px; }
.reminder-bar { display: flex; align-items: flex-start; gap: 12px; padding: 12px 14px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); box-shadow: var(--shadow-soft); }
.reminder-title { display: flex; align-items: center; gap: 7px; flex: 0 0 auto; color: var(--ink); font-size: 11px; }
.reminder-mark { display: grid; place-items: center; width: 20px; height: 20px; border-radius: 7px; color: #fff; background: var(--accent); font-size: 12px; font-weight: 700; }
.reminder-list { display: flex; flex-wrap: wrap; gap: 7px; min-width: 0; }
.reminder-chip { display: flex; align-items: baseline; gap: 7px; max-width: 100%; padding: 5px 8px; border: 0; border-radius: 7px; font: inherit; font-size: 10px; text-align: left; cursor: pointer; transition: .18s ease; }
.reminder-chip strong { white-space: nowrap; font-size: 10px; }
.reminder-chip span { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.reminder-chip-today { color: var(--amber); background: var(--amber-soft); }
.reminder-chip-overdue { color: #c4453e; background: #ffebe8; }
.reminder-chip:hover { filter: brightness(.97); transform: translateY(-1px); }
.reminder-chip:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.project-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; margin-bottom: 29px; }
.heading-kicker { margin: 0 0 7px; color: var(--accent); font-size: 11px; font-weight: 700; letter-spacing: .13em; }
.project-heading h2 { margin: 0; font-size: clamp(25px, 3vw, 35px); letter-spacing: -.04em; line-height: 1.15; }
.heading-subtitle { display: flex; align-items: center; gap: 9px; margin-top: 11px; color: var(--ink-muted); font-size: 12px; }
.heading-subtitle .divider { width: 3px; height: 3px; border-radius: 50%; background: var(--ink-faint); }
.heading-actions { display: flex; align-items: center; gap: 7px; }
.quiet-button { display: inline-flex; align-items: center; gap: 6px; padding: 8px 10px; border: 1px solid var(--line); border-radius: 8px; color: var(--ink-muted); background: var(--surface); font-size: 11px; cursor: pointer; transition: .18s ease; }
.quiet-button:hover { border-color: var(--line-strong); color: var(--accent); background: var(--surface-muted); }
.quiet-button svg { width: 14px; height: 14px; }
.progress-card { display: flex; align-items: center; gap: 18px; min-width: 220px; padding: 13px 15px; border: 1px solid var(--line); border-radius: 13px; background: var(--surface); box-shadow: var(--shadow-soft); }
.progress-ring { position: relative; width: 46px; height: 46px; flex: 0 0 46px; }
.progress-ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.progress-ring circle { fill: none; stroke-width: 3.7; }
.progress-ring .track { stroke: var(--line); }
.progress-ring .value { stroke: var(--accent); stroke-linecap: round; transition: stroke-dashoffset .3s ease; }
.progress-ring-label { position: absolute; inset: 0; display: grid; place-items: center; color: var(--ink); font-size: 10px; font-weight: 700; }
.progress-copy p { margin: 0; color: var(--ink-muted); font-size: 10px; }
.progress-copy strong { display: block; margin-bottom: 3px; font-size: 13px; }
.filter-bar { display: flex; align-items: center; gap: 5px; margin-bottom: 13px; }
.filter-button { padding: 7px 11px; border: 0; border-radius: 7px; color: var(--ink-muted); background: transparent; font-size: 11px; cursor: pointer; }
.filter-button:hover { color: var(--ink); background: var(--surface); }
.filter-button.is-active { color: var(--accent); background: var(--accent-soft); font-weight: 600; }
.filter-spacer { flex: 1; }
.add-item { display: flex; align-items: center; gap: 10px; margin-bottom: 20px; padding: 4px 5px 4px 14px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); box-shadow: var(--shadow-soft); transition: .18s ease; }
.add-item:focus-within { border-color: color-mix(in srgb, var(--accent) 50%, var(--line)); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 10%, transparent); }
.add-item svg { width: 17px; height: 17px; color: var(--accent); }
.add-item input { width: 100%; min-width: 0; padding: 11px 0; border: 0; outline: 0; color: var(--ink); background: transparent; font-size: 13px; }
.add-item input::placeholder { color: var(--ink-faint); }
.item-list { display: flex; flex-direction: column; gap: 7px; }
.item-row { display: flex; align-items: center; gap: 11px; min-height: 64px; padding: 10px 13px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); transition: .18s ease; }
.item-row:hover { border-color: var(--line-strong); box-shadow: var(--shadow-soft); }
.item-row.is-dragging { opacity: .45; }
.item-row.is-over { border-color: var(--accent); }
.check-button { display: grid; place-items: center; width: 22px; height: 22px; flex: 0 0 22px; padding: 0; border: 1.5px solid var(--line-strong); border-radius: 7px; color: #fff; background: transparent; cursor: pointer; transition: .18s ease; }
.check-button:hover { border-color: var(--accent); }
.item-row.is-completed .check-button { border-color: var(--green); background: var(--green); }
.check-button svg { width: 14px; height: 14px; opacity: 0; transform: scale(.6); transition: .16s ease; }
.item-row.is-completed .check-button svg { opacity: 1; transform: scale(1); }
.item-main { min-width: 0; flex: 1; }
.item-name { display: block; overflow: hidden; color: var(--ink); font-size: 13px; font-weight: 500; text-overflow: ellipsis; white-space: nowrap; }
.item-row.is-completed .item-name { color: var(--ink-muted); text-decoration: line-through; text-decoration-color: var(--ink-faint); }
.status-select { max-width: 100px; padding: 6px 24px 6px 8px; border: 1px solid transparent; border-radius: 7px; color: var(--ink-muted); background: var(--surface-muted); font-size: 10px; cursor: pointer; }
.status-select:hover { border-color: var(--line-strong); }
.status-select.status-in-progress { color: var(--accent); background: var(--accent-soft); }
.status-select.status-pending { color: var(--amber); background: var(--amber-soft); }
.date-field { display: inline-flex; align-items: center; gap: 5px; max-width: 158px; padding: 5px 7px; border-radius: 7px; font-size: 10px; }
.date-field input { display: block; box-sizing: border-box; width: 104px; max-width: 104px; height: 18px; min-width: 0; min-height: 18px; padding: 0; border: 0; outline: 0; color: inherit; background: transparent; font: inherit; font-size: 10px; line-height: 1.2; }
.date-field input::-webkit-datetime-edit, .date-field input::-webkit-datetime-edit-fields-wrapper { padding: 0; }
.date-field input::-webkit-date-and-time-value { min-height: 18px; }
.date-field input::-webkit-calendar-picker-indicator { opacity: .75; cursor: pointer; }
.date-field.date-upcoming { color: var(--green); background: var(--green-soft); }
.date-field.date-today { color: var(--amber); background: var(--amber-soft); }
.date-field.date-overdue { color: #c4453e; background: #ffebe8; }
.completed-badge { display: inline-flex; align-items: center; gap: 5px; padding: 6px 8px; border-radius: 7px; color: var(--green); background: var(--green-soft); font-size: 10px; }
.completed-badge svg { width: 12px; height: 12px; }
.item-actions { display: flex; align-items: center; gap: 2px; opacity: 0; transition: opacity .18s ease; }
.item-row:hover .item-actions, .item-row:focus-within .item-actions { opacity: 1; }
.item-actions .icon-button { width: 27px; height: 27px; }
.item-actions svg { width: 14px; height: 14px; }
.drag-handle { color: var(--ink-faint); cursor: grab; }
.drag-handle:active { cursor: grabbing; }
.empty-card { display: grid; place-items: center; min-height: 260px; padding: 35px; border: 1px dashed var(--line-strong); border-radius: 15px; color: var(--ink-muted); text-align: center; }
.empty-card-illustration { display: grid; place-items: center; width: 54px; height: 54px; margin-bottom: 16px; border-radius: 16px; color: var(--accent); background: var(--accent-soft); }
.empty-card-illustration svg { width: 26px; height: 26px; }
.empty-card h3 { margin: 0 0 7px; color: var(--ink); font-size: 15px; }
.empty-card p { margin: 0; font-size: 11px; }
.search-heading { display: flex; align-items: end; justify-content: space-between; margin-bottom: 24px; }
.search-heading h2 { margin: 0; font-size: 27px; letter-spacing: -.03em; }
.search-heading p { margin: 0; color: var(--ink-muted); font-size: 11px; }
.search-heading-actions { display: flex; align-items: center; gap: 12px; }
.search-results { display: flex; flex-direction: column; gap: 8px; }
.search-result { display: flex; align-items: center; gap: 13px; padding: 15px 16px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); cursor: pointer; transition: .18s ease; }
.search-result:hover { border-color: color-mix(in srgb, var(--accent) 40%, var(--line)); transform: translateY(-1px); box-shadow: var(--shadow-soft); }
.search-result-icon { display: grid; place-items: center; width: 34px; height: 34px; flex: 0 0 34px; border-radius: 10px; color: var(--accent); background: var(--accent-soft); font-size: 14px; font-weight: 700; }
.search-result-main { min-width: 0; flex: 1; }
.search-result-name { display: block; overflow: hidden; color: var(--ink); font-size: 13px; font-weight: 600; text-overflow: ellipsis; white-space: nowrap; }
.search-result-project { display: block; margin-top: 4px; color: var(--ink-muted); font-size: 10px; }
.search-result-arrow { color: var(--ink-faint); }
.search-result-arrow svg { width: 16px; height: 16px; }
.search-empty { padding: 65px 20px; color: var(--ink-muted); text-align: center; }
.search-empty strong { display: block; margin-bottom: 7px; color: var(--ink); font-size: 14px; }
.toast { position: fixed; right: 24px; bottom: 24px; z-index: 20; max-width: 310px; padding: 11px 14px; border: 1px solid var(--line); border-radius: 9px; color: var(--ink); background: var(--surface); box-shadow: var(--shadow); font-size: 12px; opacity: 0; pointer-events: none; transform: translateY(10px); transition: .22s ease; }
.toast.is-visible { opacity: 1; transform: translateY(0); }
.modal-backdrop { position: fixed; z-index: 30; inset: 0; display: grid; place-items: center; padding: 20px; background: rgba(17, 20, 33, .3); backdrop-filter: blur(4px); }
.modal-backdrop[hidden] { display: none; }
.modal-card { width: min(390px, 100%); padding: 25px; border: 1px solid var(--line); border-radius: 17px; background: var(--surface); box-shadow: var(--shadow); }
.modal-kicker { margin: 0 0 7px; color: var(--accent); font-size: 10px; font-weight: 700; letter-spacing: .13em; }
.modal-card h2 { margin: 0 0 20px; font-size: 20px; letter-spacing: -.03em; }
.modal-label { display: block; margin-bottom: 7px; color: var(--ink-muted); font-size: 11px; }
.modal-input { width: 100%; padding: 11px 12px; border: 1px solid var(--line-strong); border-radius: 9px; outline: 0; color: var(--ink); background: var(--surface-muted); font-size: 13px; }
.modal-input:focus { border-color: var(--accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 12%, transparent); }
.modal-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 22px; }
.primary-button { display: inline-flex; align-items: center; justify-content: center; padding: 9px 15px; border: 0; border-radius: 8px; color: #fff; background: var(--accent); font-size: 11px; font-weight: 600; cursor: pointer; transition: .18s ease; }
.primary-button:hover { background: var(--accent-strong); }

@media (max-width: 760px) {
  .sidebar { position: fixed; z-index: 10; inset: 0 auto 0 0; width: min(292px, 86vw); transform: translateX(-100%); box-shadow: var(--shadow); transition: transform .23s ease; }
  .sidebar.is-open { transform: translateX(0); }
  .mobile-brand { display: flex; }
  .topbar { height: 64px; gap: 11px; padding: 0 16px; }
  .topbar-caption { display: none; }
  .search-box { margin-left: auto; width: min(285px, 100%); }
  kbd { display: none; }
  .content-wrap { padding: 28px 16px 60px; }
  .project-heading { display: block; }
  .heading-actions { margin-top: 20px; }
  .progress-card { width: 100%; }
  .filter-bar { overflow-x: auto; padding-bottom: 2px; }
  .item-row { gap: 8px; padding-left: 10px; padding-right: 9px; }
  .status-select { max-width: 87px; }
  .date-field { max-width: 132px; }
  .date-field input { width: 88px; max-width: 88px; }
  .item-actions { opacity: 1; }
  .reminder-bar { display: block; }
  .reminder-title { margin-bottom: 8px; }
  .reminder-list { display: grid; grid-template-columns: minmax(0, 1fr); }
  .reminder-chip { width: 100%; min-width: 0; flex-wrap: wrap; }
  .reminder-chip span { min-width: 0; white-space: normal; overflow: hidden; text-overflow: ellipsis; display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2; }
}

@media (max-width: 420px) {
  .heading-actions { display: block; }
  .heading-actions .quiet-button { width: 100%; justify-content: center; }
  .progress-card { margin-top: 8px; }
}