:root {
    color-scheme: dark;
    --background: #101114;
    --surface: #1a1c20;
    --surface-hover: #202329;
    --border: rgba(255, 255, 255, 0.08);
    --text: #f4f5f7;
    --text-muted: #8b8f98;
    --accent: #0077ff;
    --accent-hover: #2389ff;
    --danger: #ff4d5e;
    --success: #3fb950;
    --radius-s: 6px;
    --radius-m: 8px;
    --radius-l: 12px;
    --shadow-border: 0 0 0 1px var(--border);
    --focus-ring: 0 0 0 2px var(--background), 0 0 0 4px var(--accent);
    --ease-out: cubic-bezier(0.25, 1, 0.5, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    min-height: 100vh;
    padding: 0 16px 64px;
    background-color: var(--background);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Helvetica Neue", sans-serif;
    font-size: 15px;
    -webkit-font-smoothing: antialiased;
    display: flex;
    flex-direction: column;
    align-items: center;
}

body.centered {
    justify-content: center;
    padding: 24px 16px;
}

.page-title {
    margin-top: clamp(48px, 12vh, 112px);
    margin-bottom: 32px;
    font-size: clamp(28px, 5vw, 40px);
    font-weight: 600;
    letter-spacing: -0.03em;
    text-align: center;
}

.wrapper {
    width: 100%;
    max-width: 560px;
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.text-input {
    width: 100%;
    padding: 12px 16px;
    background-color: var(--surface);
    border: none;
    border-radius: var(--radius-m);
    box-shadow: var(--shadow-border);
    font: inherit;
    color: var(--text);
    caret-color: var(--accent);
    transition: box-shadow 150ms var(--ease-out);
}

.text-input::placeholder {
    color: var(--text-muted);
}

.text-input:focus {
    outline: none;
    box-shadow: 0 0 0 1px var(--accent), 0 0 0 4px rgba(0, 119, 255, 0.2);
}

.primary-button {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 12px 20px;
    background-color: var(--accent);
    border: none;
    border-radius: var(--radius-m);
    font: inherit;
    font-size: 14px;
    font-weight: 500;
    color: #fff;
    text-decoration: none;
    cursor: pointer;
    transition: background-color 150ms var(--ease-out), transform 150ms var(--ease-out);
}

.primary-button:hover {
    background-color: var(--accent-hover);
}

.primary-button:active {
    transform: scale(0.97);
}

.primary-button:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.card {
    width: 100%;
    max-width: 380px;
    padding: 32px;
    background-color: var(--surface);
    border-radius: var(--radius-l);
    box-shadow: var(--shadow-border);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.card-title {
    font-size: 22px;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.card-subtitle {
    color: var(--text-muted);
}

.card form {
    margin-top: 24px;
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.card .text-input {
    background-color: var(--background);
}

.card > .primary-button {
    margin-top: 24px;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.field label {
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
}

.status-icon {
    width: 48px;
    height: 48px;
    margin-bottom: 8px;
    border-radius: 50%;
    background-color: var(--accent);
    display: flex;
    justify-content: center;
    align-items: center;
}

.status-icon svg {
    width: 26px;
    height: 26px;
    fill: #fff;
}

.status-icon.error {
    background-color: rgba(255, 77, 94, 0.15);
}

.status-icon.error svg {
    fill: var(--danger);
}

@keyframes fade-up {
    from {
        opacity: 0;
        transform: translateY(8px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card > * {
    animation: fade-up 250ms var(--ease-out) backwards;
}

.card > *:nth-child(2) {
    animation-delay: 40ms;
}

.card > *:nth-child(3) {
    animation-delay: 80ms;
}

.card > *:nth-child(4) {
    animation-delay: 120ms;
}

.card > *:nth-child(n+5) {
    animation-delay: 120ms;
}

.card.wide {
    max-width: none;
}

.card-heading {
    font-size: 17px;
    font-weight: 600;
    letter-spacing: -0.01em;
}

body.with-sidebar {
    flex-direction: row;
    align-items: stretch;
    padding: 0;
}

.main {
    flex-grow: 1;
    min-width: 0;
    padding: 32px 16px 64px;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.content-title {
    font-size: 24px;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.sidebar {
    width: 232px;
    flex-shrink: 0;
    position: sticky;
    top: 0;
    height: 100vh;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    box-shadow: inset -1px 0 0 var(--border);
}

.sidebar-brand {
    padding: 8px 12px 20px;
    font-size: 16px;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.sidebar-nav {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sidebar-footer {
    padding-top: 12px;
    border-top: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.sidebar-user {
    padding: 0 12px;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.sidebar-user strong {
    font-size: 14px;
    font-weight: 500;
    overflow-wrap: anywhere;
}

.sidebar-user span {
    font-size: 12px;
    color: var(--text-muted);
}

.sidebar form {
    margin: 0;
}

.nav-item {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    background: none;
    border: none;
    border-radius: var(--radius-s);
    font: inherit;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-muted);
    text-decoration: none;
    cursor: pointer;
    transition: background-color 150ms var(--ease-out), color 150ms var(--ease-out);
}

.nav-item svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
    flex-shrink: 0;
}

.nav-item:hover {
    background-color: var(--surface);
    color: var(--text);
}

.nav-item:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.nav-item.active {
    background-color: var(--surface-hover);
    color: var(--text);
}

.nav-item.danger {
    color: var(--danger);
}

.nav-item.danger:hover {
    background-color: rgba(255, 77, 94, 0.1);
}

.icon-button.nav-toggle {
    display: none;
    position: fixed;
    top: 12px;
    left: 12px;
    z-index: 25;
    background-color: var(--surface);
    box-shadow: var(--shadow-border);
}

.nav-overlay {
    position: fixed;
    inset: 0;
    z-index: 28;
    background-color: rgba(0, 0, 0, 0.5);
}

@media (max-width: 820px) {
    .sidebar {
        position: fixed;
        top: 0;
        bottom: 0;
        left: 0;
        z-index: 30;
        height: auto;
        background-color: var(--background);
        transform: translateX(-100%);
        transition: transform 200ms var(--ease-out);
    }

    .sidebar.open {
        transform: none;
        box-shadow: inset -1px 0 0 var(--border), 8px 0 24px rgba(0, 0, 0, 0.4);
    }

    .icon-button.nav-toggle {
        display: flex;
    }

    body.with-sidebar .main {
        padding-top: 64px;
    }
}

.icon-button {
    width: 40px;
    height: 40px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: none;
    border: none;
    border-radius: var(--radius-m);
    color: var(--text-muted);
    cursor: pointer;
    transition: background-color 150ms var(--ease-out), color 150ms var(--ease-out);
}

.icon-button:hover {
    background-color: var(--surface);
    color: var(--text);
}

.icon-button:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.icon-button svg {
    width: 22px;
    height: 22px;
    fill: currentColor;
}

.user-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.user-row {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 12px 12px 16px;
    background-color: var(--surface);
    border-radius: var(--radius-m);
    box-shadow: var(--shadow-border);
}

.user-info {
    flex-grow: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.user-info strong {
    font-weight: 500;
    overflow-wrap: anywhere;
}

.user-meta {
    font-size: 13px;
    color: var(--text-muted);
    overflow-wrap: anywhere;
}

.role-badge {
    flex-shrink: 0;
    padding: 2px 10px;
    border-radius: 999px;
    font-size: 12px;
    font-weight: 500;
    background-color: rgba(0, 119, 255, 0.15);
    color: var(--accent-hover);
}

select.text-input {
    cursor: pointer;
}

.notice {
    font-size: 14px;
}

.notice.error {
    color: var(--danger);
}

.notice.success {
    color: var(--success);
}

.muted {
    color: var(--text-muted);
}

.link-button {
    background: none;
    border: none;
    padding: 0;
    font: inherit;
    color: var(--accent-hover);
    cursor: pointer;
}

.link-button:hover {
    text-decoration: underline;
}

.danger-button {
    align-self: flex-start;
    padding: 10px 16px;
    background: none;
    border: none;
    border-radius: var(--radius-m);
    box-shadow: 0 0 0 1px rgba(255, 77, 94, 0.4);
    font: inherit;
    font-size: 14px;
    font-weight: 500;
    color: var(--danger);
    cursor: pointer;
    transition: background-color 150ms var(--ease-out), box-shadow 150ms var(--ease-out);
}

.danger-button:hover {
    background-color: rgba(255, 77, 94, 0.1);
    box-shadow: 0 0 0 1px var(--danger);
}

.danger-button:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.secondary-button {
    align-self: flex-start;
    padding: 10px 16px;
    background-color: var(--surface-hover);
    border: none;
    border-radius: var(--radius-m);
    box-shadow: var(--shadow-border);
    font: inherit;
    font-size: 14px;
    font-weight: 500;
    color: var(--text);
    cursor: pointer;
    transition: background-color 150ms var(--ease-out);
}

.secondary-button:hover {
    background-color: #262a31;
}

.secondary-button:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

form {
    position: relative;
}

#todo-input {
    padding: 14px 20px;
    padding-right: 136px;
    border-radius: var(--radius-l);
}

#add-button {
    position: absolute;
    top: 6px;
    right: 6px;
    bottom: 6px;
    padding: 0 20px;
    border-radius: var(--radius-s);
}

#todo-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

#todo-list:empty {
    display: none;
}

.todo {
    position: relative;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 12px 12px 16px;
    background-color: var(--surface);
    border-radius: var(--radius-m);
    box-shadow: var(--shadow-border);
    transition: background-color 150ms var(--ease-out);
}

@media (hover: hover) {
    .todo:hover {
        background-color: var(--surface-hover);
    }
}

.todo input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.custom-checkbox {
    flex-shrink: 0;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    box-shadow: inset 0 0 0 2px var(--accent);
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: background-color 150ms var(--ease-out), box-shadow 150ms var(--ease-out);
}

.custom-checkbox svg {
    width: 14px;
    height: 14px;
    fill: transparent;
    transform: scale(0.6);
    transition: fill 150ms var(--ease-out), transform 150ms var(--ease-out);
}

.todo input:checked ~ .custom-checkbox {
    background-color: var(--accent);
}

.todo input:checked ~ .custom-checkbox svg {
    fill: #fff;
    transform: scale(1);
}

.todo input:focus-visible ~ .custom-checkbox {
    box-shadow: inset 0 0 0 2px var(--accent), var(--focus-ring);
}

.todo-text {
    flex-grow: 1;
    padding: 4px 0;
    overflow-wrap: anywhere;
    cursor: pointer;
    transition: color 150ms var(--ease-out);
}

.todo input:checked ~ .todo-text {
    color: var(--text-muted);
    text-decoration: line-through;
}

.delete-button {
    flex-shrink: 0;
    width: 32px;
    height: 32px;
    display: flex;
    justify-content: center;
    align-items: center;
    background: none;
    border: none;
    border-radius: var(--radius-s);
    color: var(--text-muted);
    cursor: pointer;
    transition: color 150ms var(--ease-out), background-color 150ms var(--ease-out);
}

.delete-button svg {
    width: 18px;
    height: 18px;
    fill: currentColor;
}

@media (hover: hover) {
    .delete-button:hover {
        color: var(--danger);
        background-color: rgba(255, 77, 94, 0.1);
    }
}

.delete-button:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

#empty-state {
    padding: 24px 16px;
    text-align: center;
    color: var(--text-muted);
}

.wrapper.dashboard {
    max-width: 960px;
}

#dash-content:not([hidden]) {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.chips {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.chip {
    padding: 6px 14px;
    background: none;
    border: none;
    border-radius: 999px;
    box-shadow: var(--shadow-border);
    font: inherit;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
    cursor: pointer;
    transition: background-color 150ms var(--ease-out), color 150ms var(--ease-out), box-shadow 150ms var(--ease-out);
}

.chip:hover {
    background-color: var(--surface);
    color: var(--text);
}

.chip:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.chip.active {
    background-color: var(--accent);
    box-shadow: none;
    color: #fff;
}

.toolbar-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.small {
    font-size: 13px;
}

.tiles {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 8px;
}

@media (max-width: 700px) {
    .tiles {
        grid-template-columns: repeat(2, 1fr);
    }
}

.tile {
    padding: 16px;
    background-color: var(--surface);
    border-radius: var(--radius-m);
    box-shadow: var(--shadow-border);
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.tile-label {
    font-size: 13px;
    color: var(--text-muted);
}

.tile-value {
    font-size: 26px;
    font-weight: 600;
    letter-spacing: -0.02em;
    font-variant-numeric: tabular-nums;
}

.tile-sub {
    font-size: 12px;
    color: var(--text-muted);
}

.chart-card {
    position: relative;
}

.chart-card svg {
    display: block;
    width: 100%;
    margin-top: 12px;
}

.chart-tip {
    position: absolute;
    z-index: 5;
    padding: 6px 10px;
    background-color: var(--surface-hover);
    border-radius: var(--radius-s);
    box-shadow: 0 0 0 1px var(--border), 0 4px 12px rgba(0, 0, 0, 0.4);
    font-size: 12px;
    font-variant-numeric: tabular-nums;
    pointer-events: none;
    white-space: nowrap;
}

.data-table {
    width: 100%;
    margin-top: 16px;
    border-collapse: collapse;
    font-size: 13px;
}

.data-table th {
    padding: 8px 7px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-muted);
    text-align: right;
    white-space: nowrap;
}

.data-table th:first-child {
    text-align: left;
}

.data-table td {
    padding: 10px 7px;
    border-top: 1px solid var(--border);
    text-align: right;
    font-variant-numeric: tabular-nums;
    white-space: nowrap;
}

.data-table td:first-child {
    text-align: left;
    font-weight: 500;
}

.data-table tfoot td {
    font-weight: 600;
}

.table-scroll {
    overflow-x: auto;
}

.sim-row {
    display: grid;
    grid-template-columns: 52px 1fr 110px 170px;
    align-items: center;
    gap: 12px;
    padding: 10px 0;
    border-top: 1px solid var(--border);
}

.sim-row:first-of-type {
    border-top: none;
}

.sim-name {
    font-weight: 500;
}

.sim-result {
    font-size: 13px;
    color: var(--text-muted);
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.sim-result strong {
    display: block;
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
}

.sim-input {
    width: 110px;
    padding: 8px 10px;
    text-align: right;
    font-variant-numeric: tabular-nums;
}

.sim-total {
    margin-top: 16px;
    padding: 16px;
    background-color: var(--background);
    border-radius: var(--radius-m);
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
}

.sim-total-value {
    font-size: 24px;
    font-weight: 600;
    letter-spacing: -0.02em;
    font-variant-numeric: tabular-nums;
}

input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    border-radius: 999px;
    background: var(--surface-hover);
    outline: none;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    transition: transform 150ms var(--ease-out);
}

input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.15);
}

input[type="range"]:focus-visible::-webkit-slider-thumb {
    box-shadow: var(--focus-ring);
}

.simulator-toolbar {
    margin-top: 12px;
}

.segmented {
    display: inline-flex;
    padding: 3px;
    gap: 2px;
    background-color: var(--background);
    border-radius: var(--radius-m);
}

.segmented button {
    padding: 6px 12px;
    background: none;
    border: none;
    border-radius: var(--radius-s);
    font: inherit;
    font-size: 13px;
    font-weight: 500;
    color: var(--text-muted);
    cursor: pointer;
    transition: background-color 150ms var(--ease-out), color 150ms var(--ease-out);
}

.segmented button.active {
    background-color: var(--surface-hover);
    color: var(--text);
}

.segmented button:focus-visible {
    outline: none;
    box-shadow: var(--focus-ring);
}

.toast {
    position: fixed;
    top: 24px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 20;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    background-color: var(--surface);
    border-radius: var(--radius-m);
    box-shadow: 0 0 0 1px var(--border), 0 8px 24px rgba(0, 0, 0, 0.4);
    font-size: 14px;
    animation: toast-in 200ms var(--ease-out);
    transition: opacity 200ms var(--ease-out), transform 200ms var(--ease-out);
}

.toast.hide {
    opacity: 0;
    transform: translateX(-50%) translateY(-8px);
}

@keyframes toast-in {
    from {
        opacity: 0;
        transform: translateX(-50%) translateY(-8px);
    }
}

.toast-icon {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background-color: var(--accent);
    display: flex;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
}

.toast-icon svg {
    width: 12px;
    height: 12px;
    fill: #fff;
}

@media (prefers-reduced-motion: reduce) {
    * {
        transition: none !important;
        animation: none !important;
    }
}