:root {
    --bg: #0f0f10;
    --surface: #17171a;
    --border: #26262b;
    --text: #ececef;
    --muted: #8a8a93;
    --accent: #7cd992;
    --on-accent: #0b1a10;
    --green: #4ade80;
    --yellow: #facc15;
    --red: #f87171;
    --green-bg: rgba(74, 222, 128, 0.12);
    --yellow-bg: rgba(250, 204, 21, 0.12);
    --red-bg: rgba(248, 113, 113, 0.12);
    --focus-bg: #1f2a22;
    --placeholder: #55555d;
    --hover-bg: rgba(255, 255, 255, 0.07);
    --switch-off: #34343a;
    --overlay: rgba(0, 0, 0, 0.6);
    color-scheme: dark;
}

:root[data-theme="light"] {
    --bg: #f7f7f8;
    --surface: #ffffff;
    --border: #e4e4e8;
    --text: #18181b;
    --muted: #6b6b76;
    --accent: #178a48;
    --on-accent: #ffffff;
    --green: #15803d;
    --yellow: #a16207;
    --red: #dc2626;
    --green-bg: rgba(21, 128, 61, 0.10);
    --yellow-bg: rgba(161, 98, 7, 0.10);
    --red-bg: rgba(220, 38, 38, 0.08);
    --focus-bg: #eef7f1;
    --placeholder: #a1a1aa;
    --hover-bg: rgba(0, 0, 0, 0.06);
    --switch-off: #d4d4d8;
    --overlay: rgba(0, 0, 0, 0.35);
    color-scheme: light;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    background: var(--bg);
    color: var(--text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    font-size: 1rem;
    line-height: 1.5;
    -webkit-text-size-adjust: 100%;
}

.app {
    max-width: 640px;
    margin: 0 auto;
    padding: 32px 16px 64px;
}

/* Шапка */
.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
}

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

.logo {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    display: block;
}

h1 {
    margin: 0;
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.subtitle {
    margin: 8px 0 28px;
    color: var(--muted);
}

h2 {
    margin: 36px 0 12px;
    font-size: 0.8125rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
}

/* Иконка-кнопка (шестерёнка) */
.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 38px;
    height: 38px;
    padding: 0;
    border: none;
    border-radius: 10px;
    background: transparent;
    color: var(--muted);
    font-family: inherit;
    font-size: 1rem;
    cursor: pointer;
    opacity: 0.7;
    -webkit-tap-highlight-color: transparent;
    transition: opacity 0.15s ease, background-color 0.15s ease, color 0.15s ease;
}

.icon-btn:hover,
.icon-btn:focus-visible {
    opacity: 1;
    background: var(--hover-bg);
    color: var(--text);
}

.icon-btn svg {
    width: 20px;
    height: 20px;
}

/* Добавление слова */
.input-container {
    display: flex;
    gap: 8px;
}

input[type="text"] {
    flex: 1;
    min-width: 0;
    padding: 12px 14px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    font-size: max(16px, 1rem); /* не меньше 16px, чтобы iOS не зумил при фокусе */
    font-family: inherit;
}

input[type="text"]::placeholder {
    color: var(--muted);
}

input[type="text"]:focus {
    outline: none;
    border-color: var(--accent);
}

button#addBtn {
    padding: 12px 20px;
    border: none;
    border-radius: 10px;
    background: var(--accent);
    color: var(--on-accent);
    font-size: 1rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    transition: opacity 0.15s ease;
}

button#addBtn:hover {
    opacity: 0.85;
}

.hint {
    margin: 8px 2px 0;
    font-size: 0.8125rem;
    color: var(--muted);
}

/* Прогресс */
.progress {
    margin: 0 0 14px;
}

.progress-text {
    margin-bottom: 6px;
    font-size: 0.8125rem;
    color: var(--muted);
}

.progress-bar {
    height: 6px;
    border-radius: 999px;
    background: var(--border);
    overflow: hidden;
}

.progress-fill {
    width: 0;
    height: 100%;
    border-radius: 999px;
    background: var(--green);
    transition: width 0.3s ease;
}

/* Таблица */
.styled-table {
    width: 100%;
    border-collapse: collapse;
    table-layout: fixed;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
}

.styled-table th {
    padding: 12px 14px;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--muted);
    border-bottom: 1px solid var(--border);
}

.styled-table td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
    overflow-wrap: anywhere;
    touch-action: pan-y;
}

.styled-table tbody tr:last-child td {
    border-bottom: none;
}

.styled-table th.col-status,
.styled-table td.col-status {
    width: 7.4rem;
}

/* Редактируемые ячейки */
.editable-cell {
    outline: none;
    cursor: text;
    transition: background-color 0.15s ease;
}

.editable-cell:focus {
    background: var(--focus-bg);
}

.editable-cell:empty:before {
    content: attr(data-placeholder);
    color: var(--placeholder);
    font-size: 0.875rem;
}

/* Статус */
.status-badge {
    display: inline-block;
    padding: 5px 12px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: transparent;
    color: var(--muted);
    font-family: inherit;
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: background-color 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}

.status-badge[data-status="learned"] {
    color: var(--green);
    border-color: var(--green);
    background: var(--green-bg);
}

.status-badge[data-status="partial"] {
    color: var(--yellow);
    border-color: var(--yellow);
    background: var(--yellow-bg);
}

.status-badge[data-status="not"] {
    color: var(--red);
    border-color: var(--red);
    background: var(--red-bg);
}

/* Озвучка (колонка скрыта, пока не включена в настройках) */
.styled-table .col-speak {
    display: none;
}

:root[data-speech="on"] .styled-table .col-speak {
    display: table-cell;
}

.styled-table th.col-speak,
.styled-table td.col-speak {
    width: 2.5rem;
    padding-left: 0;
    padding-right: 0;
    text-align: center;
}

.speak-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    padding: 0;
    border: none;
    border-radius: 8px;
    background: transparent;
    color: var(--muted);
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition: color 0.15s ease, background-color 0.15s ease;
}

.speak-btn svg {
    width: 18px;
    height: 18px;
}

.speak-btn:hover {
    color: var(--accent);
    background: var(--hover-bg);
}

.speak-btn:disabled {
    opacity: 0.3;
    cursor: default;
    background: transparent;
    color: var(--muted);
}

/* Телефоны */
@media (max-width: 480px) {
    .app {
        padding: 20px 12px 48px;
    }

    h1 {
        font-size: 1.5rem;
    }

    .logo {
        width: 38px;
        height: 38px;
    }

    .styled-table th,
    .styled-table td {
        padding: 10px;
    }

    .styled-table th.col-status,
    .styled-table td.col-status {
        width: 6rem;
    }

    .status-badge {
        padding: 6px 8px;
        font-size: 0.6875rem;
    }
}

/* Аккаунт */
.auth-bar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px 12px;
    margin: -12px 0 24px;
    font-size: 0.8125rem;
    color: var(--muted);
}

.auth-bar[hidden],
.auth-form[hidden] {
    display: none;
}

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

.auth-form {
    display: flex;
    flex: 1 1 100%;
    gap: 8px;
}

.auth-form input {
    flex: 1;
    min-width: 0;
    padding: 10px 12px;
    border-radius: 10px;
    border: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    font-size: max(16px, 1rem);
    font-family: inherit;
}

.auth-form input:focus {
    outline: none;
    border-color: var(--accent);
}

.auth-form button {
    padding: 10px 16px;
    border: none;
    border-radius: 10px;
    background: var(--accent);
    color: var(--on-accent);
    font-size: 0.875rem;
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
}

/* Удаление */
.styled-table th.col-del,
.styled-table td.col-del {
    width: 2.75rem;
    padding-left: 0;
    padding-right: 8px;
    text-align: center;
}

.del-btn {
    padding: 6px 8px;
    border: none;
    border-radius: 8px;
    background: transparent;
    color: var(--muted);
    font-size: 0.875rem;
    cursor: pointer;
    opacity: 0;
    transition: opacity 0.15s ease, color 0.15s ease, background-color 0.15s ease;
}

.styled-table tr:hover .del-btn,
.del-btn:focus-visible {
    opacity: 1;
}

.del-btn:hover {
    color: var(--red);
    background: var(--red-bg);
}

tr.swiping {
    background: var(--red-bg);
}

/* На телефонах крестик не нужен, там свайп */
@media (hover: none) {
    .styled-table .col-del {
        display: none;
    }
}

/* Настройки */
.overlay {
    position: fixed;
    inset: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 16px;
    background: var(--overlay);
}

.overlay[hidden] {
    display: none;
}

.panel {
    width: 100%;
    max-width: 380px;
    max-height: calc(100vh - 32px);
    overflow-y: auto;
    padding: 20px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.25);
}

.panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 18px;
}

.panel-head h2 {
    margin: 0;
    font-size: 1.125rem;
    font-weight: 700;
    letter-spacing: 0;
    text-transform: none;
    color: var(--text);
}

.setting {
    margin-bottom: 20px;
}

.setting[hidden] {
    display: none;
}

.setting.row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    cursor: pointer;
}

.setting-label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.875rem;
    font-weight: 600;
}

.setting.row .setting-label {
    margin-bottom: 2px;
}

.setting-hint {
    display: block;
    font-size: 0.8125rem;
    color: var(--muted);
}

.setting-note {
    margin: 0;
    font-size: 0.75rem;
    color: var(--muted);
}

.setting-section {
    margin: 4px 0 10px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--muted);
}

.segmented {
    display: flex;
    gap: 2px;
    padding: 3px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 10px;
}

.segmented button {
    flex: 1;
    padding: 8px 10px;
    border: none;
    border-radius: 8px;
    background: transparent;
    color: var(--muted);
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
}

.segmented button.active {
    background: var(--surface);
    color: var(--text);
    box-shadow: 0 0 0 1px var(--border);
}

/* Ползунок размера текста */
.setting-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 8px;
}

.setting-top .setting-label {
    margin-bottom: 0;
}

.setting-value {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    font-size: 0.8125rem;
    color: var(--muted);
}

.slider-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.slider-row input[type="range"] {
    flex: 1;
    min-width: 0;
    height: 28px;
    margin: 0;
    accent-color: var(--accent);
    cursor: pointer;
}

.slider-a {
    font-weight: 600;
    line-height: 1;
    color: var(--muted);
}

.slider-a.small {
    font-size: 12px;
}

.slider-a.large {
    font-size: 20px;
}

.switch {
    -webkit-appearance: none;
    appearance: none;
    position: relative;
    flex: none;
    width: 44px;
    height: 26px;
    margin: 0;
    border-radius: 999px;
    background: var(--switch-off);
    cursor: pointer;
    transition: background-color 0.15s ease;
}

.switch::after {
    content: "";
    position: absolute;
    top: 3px;
    left: 3px;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: #ffffff;
    transition: transform 0.15s ease;
}

.switch:checked {
    background: var(--accent);
}

.switch:checked::after {
    transform: translateX(18px);
}

.switch:disabled {
    opacity: 0.4;
    cursor: default;
}

.btn {
    display: block;
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: transparent;
    color: var(--text);
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.15s ease;
}

.btn:hover {
    background: var(--hover-bg);
}

.btn + .btn {
    margin-top: 8px;
}

.btn-danger {
    color: var(--red);
    border-color: var(--red);
}

.btn-danger:hover {
    background: var(--red-bg);
}