* {
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

:root {
    color-scheme: light;
    --bg-page: #ececef;
    --bg-surface: #ffffff;
    --bg-surface-elevated: #ffffff;
    --bg-muted: #f3f3f5;
    --bg-tabs: #ffffff;
    --bg-week-header: #ebebed;
    --text-primary: #141414;
    --text-secondary: #5c5c5c;
    --text-muted: #8a8a8a;
    --border: #d4d4d8;
    --border-soft: #e8e8ec;
    --accent: #3d3d42;
    --accent-hover: #2a2a2e;
    --on-accent: #ffffff;
    --selected: #2f2f33;
    --link: #2f2f33;
    --shadow-card: 0 8px 28px rgba(0, 0, 0, 0.06);
    --status-success: #1b5e20;
    --status-error: #b71c1c;
    --backdrop: rgba(0, 0, 0, 0.4);
}

:root[data-theme="dark"] {
    color-scheme: dark;
    --bg-page: #0c0c0e;
    --bg-surface: #17171a;
    --bg-surface-elevated: #1c1c20;
    --bg-muted: #222226;
    --bg-tabs: #141418;
    --bg-week-header: #1f1f24;
    --text-primary: #ededed;
    --text-secondary: #b0b0b8;
    --text-muted: #888890;
    --border: #3a3a42;
    --border-soft: #2e2e34;
    --accent: #d8d8dc;
    --accent-hover: #eeeeef;
    --on-accent: #121214;
    --selected: #c8c8cc;
    --link: #d0d0d5;
    --shadow-card: 0 12px 36px rgba(0, 0, 0, 0.45);
    --status-success: #81c784;
    --status-error: #ef9a9a;
    --backdrop: rgba(0, 0, 0, 0.65);
}

body {
    margin: 0;
    background: var(--bg-page);
    color: var(--text-primary);
}

.auth-screen {
    min-height: 100vh;
    display: grid;
    place-items: center;
    padding: 24px;
    background: var(--bg-page);
    color: var(--text-primary);
}

.auth-screen.is-hidden {
    display: none;
}

.auth-card {
    width: 100%;
    max-width: 400px;
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 28px 28px 24px;
    box-shadow: var(--shadow-card);
}

.auth-title {
    margin: 0 0 8px;
    font-size: 1.45rem;
}

.auth-subtitle {
    margin: 0 0 20px;
    color: var(--text-secondary);
    font-size: 14px;
}

.auth-form {
    display: grid;
    gap: 14px;
}

.auth-label {
    display: grid;
    gap: 6px;
    font-size: 14px;
}

.auth-error {
    margin: 0;
    font-size: 14px;
    color: var(--status-error);
}

.auth-submit {
    margin-top: 4px;
}

.app.is-hidden {
    display: none;
}

.app {
    max-width: 1000px;
    margin: 0 auto;
    padding: 16px;
}

.app-header-top {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 4px;
}

.app-header-text h1 {
    margin: 0;
}

.app-header-text p {
    margin: 8px 0 0;
    color: var(--text-secondary);
}

.app-header-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: center;
}

.theme-toggle {
    padding: 10px 14px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-muted);
    color: var(--text-primary);
    cursor: pointer;
    font-weight: 600;
    font-size: 14px;
}

.tabs {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    background: var(--bg-tabs);
    padding: 8px;
    border: 1px solid var(--border-soft);
    border-radius: 12px;
    position: sticky;
    top: 0;
    z-index: 5;
}

.tab-button {
    border: 1px solid var(--border);
    background: var(--bg-muted);
    padding: 12px 16px;
    cursor: pointer;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.tab-button.active {
    border-color: var(--accent);
    background: var(--accent);
    color: var(--on-accent);
    font-weight: 700;
}

.tab-content {
    display: none;
    background: var(--bg-surface);
    padding: 16px;
    border-radius: 10px;
    border: 1px solid var(--border-soft);
}

.tab-content.active {
    display: block;
}

.form-grid,
#client-form,
#service-form {
    display: grid;
    gap: 12px;
}

label {
    display: grid;
    gap: 6px;
    font-size: 14px;
}

input,
select,
button {
    padding: 10px;
    border-radius: 8px;
    border: 1px solid var(--border);
    background: var(--bg-surface);
    color: var(--text-primary);
}

button {
    background: var(--accent);
    color: var(--on-accent);
    border: none;
    cursor: pointer;
}

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

/* Узгоджений контраст: фон hover ↔ колір тексту */
.tab-button:hover,
.duration-btn:hover,
.date-trigger:hover {
    background: var(--accent-hover);
    color: var(--on-accent);
    border-color: var(--accent-hover);
}

button.theme-toggle:hover {
    background: var(--border-soft);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-muted);
    color: var(--accent);
    border-color: var(--accent);
}

:root[data-theme="dark"] .btn-secondary:hover {
    color: var(--text-primary);
    border-color: var(--border);
}

.date-picker-nav-btn:hover {
    background: var(--bg-muted);
    color: var(--text-primary);
    border-color: var(--border);
}

.date-picker-day:not(.selected):not(.disabled):hover {
    background: var(--bg-muted);
    color: var(--text-primary);
}

.date-picker-day.selected:hover {
    background: var(--selected);
    color: var(--on-accent);
}

.time-picker-option:not(.selected):not(.disabled):hover {
    background: var(--bg-muted);
    color: var(--text-primary);
}

.time-picker-option.selected:hover {
    background: var(--selected);
    color: var(--on-accent);
    border-color: var(--selected);
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
}

.lists-grid {
    margin-top: 24px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 20px;
}

.lists-grid--services-wide {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

@media (min-width: 960px) {
    .lists-grid--services-wide {
        grid-template-columns: minmax(320px, 2.2fr) minmax(260px, 1fr);
    }
}

.services-hint {
    font-size: 13px;
    color: var(--text-secondary);
    margin: 0 0 12px;
    line-height: 1.4;
}

.categories-list-block {
    margin-top: 16px;
}

.categories-subheading {
    margin: 0 0 8px;
    font-size: 14px;
    font-weight: 600;
    color: var(--text-secondary);
}

.categories-empty {
    margin: 8px 0 0;
    font-size: 14px;
    color: var(--text-secondary);
}

.services-category-group {
    margin-bottom: 20px;
}

.services-category-group:last-child {
    margin-bottom: 0;
}

.services-category-heading {
    margin: 0 0 8px;
    font-size: 15px;
    font-weight: 700;
    color: var(--text-primary);
}

.service-category-field {
    display: grid;
    gap: 4px;
    margin-top: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-secondary);
}

.service-category-field select {
    font-weight: 400;
}

.simple-list-item--service-manage {
    align-items: flex-start;
}

.item-actions--reorder {
    flex-wrap: wrap;
    max-width: 240px;
    justify-content: flex-end;
}

.appointment-service-group {
    margin-bottom: 12px;
}

.appointment-service-group:last-child {
    margin-bottom: 0;
}

.appointment-service-group-title {
    margin: 0 0 6px;
    font-size: 13px;
    font-weight: 700;
    color: var(--text-secondary);
}

.simple-list {
    border: 1px solid var(--border-soft);
    border-radius: 10px;
    overflow: hidden;
    background: var(--bg-surface);
}

.simple-list-item {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 8px;
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-soft);
    align-items: center;
}

.simple-list-item:last-child {
    border-bottom: none;
}

.item-main {
    display: grid;
    gap: 3px;
}

.item-sub {
    color: var(--text-secondary);
    font-size: 13px;
}

.item-actions {
    display: flex;
    gap: 6px;
}

.btn-small {
    padding: 7px 10px;
    font-size: 13px;
}

.btn-secondary {
    background: var(--bg-surface);
    border: 1px solid var(--accent);
    color: var(--accent);
}

:root[data-theme="dark"] .btn-secondary {
    color: var(--text-primary);
    border-color: var(--border);
}

.status {
    margin-top: 12px;
    min-height: 20px;
    color: var(--text-secondary);
}

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

.status.status--error {
    color: var(--status-error);
}

.day-card {
    border: 1px solid var(--border-soft);
    border-radius: 12px;
    padding: 0;
    margin-bottom: 10px;
    background: var(--bg-surface);
    overflow: hidden;
}

.week-grid {
    display: grid;
    gap: 10px;
    grid-template-columns: 1fr;
}

.appointment-item {
    padding: 10px 12px;
    border-bottom: 1px solid var(--border-soft);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 12px;
}

.appointment-item:last-child {
    border-bottom: none;
}

.week-date-title {
    margin: 0;
    padding: 10px 12px;
    font-size: 14px;
    font-weight: 700;
    letter-spacing: 0.2px;
    border-bottom: 1px solid var(--border-soft);
    background: var(--bg-week-header);
    color: var(--text-primary);
}

.appointment-main {
    min-width: 0;
    display: grid;
    gap: 4px;
}

.appointment-time-client {
    margin: 0;
    font-size: 16px;
}

.appointment-meta {
    margin: 0;
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.35;
    word-break: break-word;
}

.client-phone-link {
    margin-left: 0;
    color: var(--link);
    text-decoration: none;
    font-weight: 700;
    font-size: 14px;
}

.client-phone-link:hover {
    text-decoration: underline;
}

.archive-block {
    margin-top: 24px;
    border: 1px solid var(--border-soft);
    border-radius: 12px;
    background: var(--bg-surface);
    overflow: hidden;
}

.archive-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 16px;
    border: none;
    background: var(--bg-week-header);
    color: var(--text-primary);
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
    text-align: left;
}

.archive-toggle:hover {
    background: var(--bg-muted);
}

.archive-toggle-chevron {
    display: inline-block;
    width: 10px;
    height: 10px;
    border-right: 2px solid var(--text-secondary);
    border-bottom: 2px solid var(--text-secondary);
    transform: rotate(45deg);
    transition: transform 0.2s ease;
    flex-shrink: 0;
    margin-top: -4px;
}

.archive-toggle[aria-expanded="true"] .archive-toggle-chevron {
    transform: rotate(-135deg);
    margin-top: 4px;
}

.archive-panel {
    padding: 16px;
    border-top: 1px solid var(--border-soft);
}

.archive-panel.is-collapsed {
    display: none;
}

.archive-filters {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-end;
    gap: 12px;
    margin-bottom: 16px;
}

.archive-filter-label {
    display: grid;
    gap: 6px;
    font-size: 14px;
}

.archive-date-input {
    min-width: 150px;
}

.archive-list:empty {
    display: none;
}

.field-title {
    display: inline-block;
    margin-bottom: 6px;
    font-size: 14px;
}

.duration-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 8px;
}

.duration-btn {
    background: var(--bg-surface);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.duration-btn.active {
    background: var(--accent);
    border-color: var(--accent);
    color: var(--on-accent);
}

.time-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
}

.native-time-select {
    display: none;
}

.service-checklist {
    display: grid;
    gap: 8px;
}

.service-option {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 10px;
    border: 1px solid var(--border-soft);
    border-radius: 8px;
    padding: 8px 10px;
    background: var(--bg-surface);
}

.service-option input {
    width: 18px;
    height: 18px;
    accent-color: var(--accent);
}

.total-box {
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 12px;
    font-weight: 700;
    background: var(--bg-muted);
    color: var(--text-primary);
}

.date-trigger {
    width: 100%;
    text-align: left;
    background: var(--bg-surface);
    color: var(--text-primary);
    border: 1px solid var(--border);
    font-weight: 400;
}

.date-picker-modal {
    position: fixed;
    inset: 0;
    display: none;
    z-index: 100;
}

.date-picker-modal.open {
    display: block;
}

.date-picker-backdrop {
    position: absolute;
    inset: 0;
    background: var(--backdrop);
}

.date-picker-dialog {
    position: relative;
    max-width: 360px;
    margin: 40px auto;
    background: var(--bg-surface);
    border-radius: 18px;
    border: 1px solid var(--border-soft);
    padding: 16px;
    color: var(--text-primary);
}

.date-picker-header {
    margin-bottom: 10px;
}

.date-picker-label {
    margin: 0;
    color: var(--text-secondary);
    font-size: 14px;
}

.date-picker-current {
    margin: 8px 0 0;
    font-size: 34px;
    font-weight: 500;
}

.date-picker-nav {
    display: grid;
    grid-template-columns: 36px 1fr 36px;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.date-picker-month-label {
    text-align: center;
    margin: 0;
    font-size: 22px;
}

.date-picker-nav-btn {
    padding: 8px;
    border-radius: 999px;
    background: var(--bg-surface);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.date-picker-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    text-align: center;
    font-weight: 600;
    color: var(--text-secondary);
    margin: 10px 0 6px;
}

.date-picker-days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
}

.date-picker-day {
    padding: 0;
    width: 100%;
    aspect-ratio: 1 / 1;
    border-radius: 999px;
    border: 1px solid transparent;
    background: transparent;
    color: var(--text-primary);
}

.date-picker-day:hover {
    background: var(--bg-muted);
}

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

.date-picker-day.selected {
    background: var(--selected);
    color: var(--on-accent);
}

.date-picker-day.disabled {
    color: var(--text-muted);
    pointer-events: none;
}

.date-picker-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 14px;
}

.appointment-success-dialog {
    max-width: 400px;
    text-align: center;
}

.appointment-success-body {
    margin-bottom: 6px;
}

.appointment-success-title {
    margin: 0 0 10px;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--text-primary);
}

.appointment-success-text {
    margin: 0;
    font-size: 15px;
    line-height: 1.45;
    color: var(--text-secondary);
}

.time-picker-dialog {
    max-width: 420px;
}

.time-picker-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}

.time-picker-col-title {
    margin: 0 0 8px;
    font-size: 14px;
    color: var(--text-secondary);
    font-weight: 600;
}

.time-picker-list {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
    max-height: 270px;
    overflow: auto;
    padding-right: 2px;
}

.time-picker-option {
    padding: 10px 0;
    border-radius: 999px;
    background: var(--bg-surface);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.time-picker-option.selected {
    background: var(--selected);
    border-color: var(--selected);
    color: var(--on-accent);
}

.time-picker-empty {
    margin: 0;
    padding: 12px 4px;
    font-size: 14px;
    color: var(--text-secondary);
    text-align: center;
}

.time-picker-option.disabled {
    color: var(--text-muted);
    border-color: var(--border-soft);
    pointer-events: none;
}

@media (max-width: 768px) {
    .week-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .day-card {
        margin-bottom: 0;
    }

    .appointment-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }

    .week-date-title {
        font-size: 12px;
        padding: 8px 10px;
    }

    .appointment-time-client {
        font-size: 14px;
    }

    .appointment-meta {
        font-size: 12px;
    }

    .client-phone-link {
        font-size: 13px;
    }

    .item-actions {
        width: 100%;
        display: grid;
        grid-template-columns: 1fr 1fr;
    }

    .item-actions .btn-small {
        width: 100%;
        font-size: 12px;
        padding: 7px 6px;
    }

    .app-header-actions {
        width: 100%;
        justify-content: flex-start;
    }
}