:root {
    --primary: #ff2e63;
    --primary-dark: #d61c4e;
    --secondary: #5f27cd;
    --accent: #10ac84;
    --warning: #e67e22;
    --danger: #d63031;
    --bg: #f0f2f5;
    --card-bg: #ffffff;
    --surface-soft: #f8f7fb;
    --text: #1a1a2e;
    --text-light: #576574;
    --border: #1a1a2e;
    --shadow: 6px 6px 0 #1a1a2e;
    --shadow-small: 3px 3px 0 #1a1a2e;
    --radius: 6px;
    --radius-lg: 10px;
    --sidebar-width: 260px;
    --content-width: 1180px;
}

[data-theme="dark"] {
    --bg: #0f0f1a;
    --card-bg: #1a1a2e;
    --surface-soft: #23233a;
    --text: #f1f2f6;
    --text-light: #b0b6c0;
    --border: #050509;
    --shadow: 6px 6px 0 #050509;
    --shadow-small: 3px 3px 0 #050509;
}

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

.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

[hidden] {
    display: none !important;
}

html {
    scroll-behavior: smooth;
}

body {
    min-width: 320px;
    min-height: 100vh;
    background: var(--bg);
    color: var(--text);
    font-family: "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
    line-height: 1.55;
}

button,
input,
select,
textarea {
    font: inherit;
}

button,
a,
summary,
input,
select,
textarea {
    outline: none;
}

button:focus-visible,
a:focus-visible,
summary:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 3px solid #ffb400;
    outline-offset: 3px;
}

.app {
    min-height: 100vh;
}

.sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 100;
    display: flex;
    width: var(--sidebar-width);
    flex-direction: column;
    background: var(--card-bg);
    border-right: 3px solid var(--border);
    box-shadow: var(--shadow);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 22px;
    border-bottom: 3px solid var(--border);
}

.logo-icon {
    display: grid;
    width: 44px;
    height: 44px;
    flex: 0 0 auto;
    place-items: center;
    border: 3px solid var(--border);
    border-radius: var(--radius);
    background: var(--primary);
    box-shadow: var(--shadow-small);
    font-size: 22px;
}

.logo h1 {
    font-size: 18px;
    font-weight: 900;
    letter-spacing: .3px;
}

.logo p {
    color: var(--text-light);
    font-size: 11px;
}

.nav {
    display: flex;
    flex: 1;
    flex-direction: column;
    gap: 8px;
    padding: 18px 12px;
}

.nav-item {
    display: flex;
    min-height: 48px;
    align-items: center;
    gap: 12px;
    padding: 11px 16px;
    border: 2px solid transparent;
    border-radius: var(--radius);
    color: var(--text-light);
    font-weight: 700;
    text-decoration: none;
    transition: transform .15s ease, background .15s ease;
}

.nav-item:hover {
    color: var(--primary);
    transform: translateX(3px);
}

.nav-item.active {
    border-color: var(--border);
    background: var(--primary);
    box-shadow: var(--shadow-small);
    color: #fff;
}

.nav-icon {
    font-size: 19px;
}

.sidebar-footer {
    padding: 16px;
    border-top: 3px solid var(--border);
    color: var(--text-light);
    font-size: 12px;
    text-align: center;
}

.status-dot {
    display: inline-block;
    width: 8px;
    height: 8px;
    margin: 10px 4px 0 0;
    border-radius: 50%;
    background: var(--accent);
}

.main {
    min-height: 100vh;
    margin-left: var(--sidebar-width);
}

.header {
    position: sticky;
    top: 0;
    z-index: 50;
    display: flex;
    min-height: 72px;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 10px 28px;
    border-bottom: 3px solid var(--border);
    background: color-mix(in srgb, var(--card-bg) 94%, transparent);
    backdrop-filter: blur(10px);
}

.page-title {
    font-size: 20px;
}

.header-subtitle {
    color: var(--text-light);
    font-size: 11px;
}

.header-actions,
.intro-actions,
.hero-actions,
.button-row,
.modal-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

.icon-btn {
    display: grid;
    width: 42px;
    min-width: 42px;
    height: 42px;
    place-items: center;
    border: 3px solid var(--border);
    border-radius: 50%;
    background: var(--surface-soft);
    color: var(--text);
    cursor: pointer;
    font-size: 18px;
}

.menu-toggle {
    display: none;
}

.user-avatar {
    display: grid;
    width: 42px;
    height: 42px;
    place-items: center;
    border: 3px solid var(--border);
    border-radius: 50%;
    background: var(--secondary);
}

.content {
    width: min(100%, var(--content-width));
    min-height: calc(100vh - 130px);
    margin: 0 auto;
    padding: 28px;
}

.page {
    display: none;
    animation: enter .25s ease;
}

.page.active {
    display: block;
}

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

.footer {
    padding: 18px 28px;
    border-top: 3px solid var(--border);
    background: var(--card-bg);
    color: var(--text-light);
    font-size: 12px;
    text-align: center;
}

.hero-card {
    display: flex;
    min-height: 230px;
    align-items: center;
    justify-content: space-between;
    gap: 28px;
    padding: 32px;
    border: 3px solid var(--border);
    border-radius: var(--radius-lg);
    background: linear-gradient(135deg, var(--primary), #ff5c7f);
    box-shadow: var(--shadow);
    color: #fff;
}

.hero-text h3 {
    max-width: 680px;
    margin: 5px 0 8px;
    font-size: clamp(24px, 3vw, 36px);
    line-height: 1.2;
}

.hero-text > p {
    margin-bottom: 22px;
    opacity: .92;
}

.hero-stat {
    min-width: 120px;
    text-align: center;
}

.stat-circle {
    display: grid;
    width: 100px;
    height: 100px;
    margin: 0 auto 8px;
    place-items: center;
    border: 4px solid rgba(255,255,255,.9);
    border-radius: 50%;
    background: rgba(255,255,255,.14);
    font-size: 24px;
    font-weight: 900;
}

.eyebrow {
    display: block;
    color: var(--primary);
    font-size: 11px;
    font-weight: 900;
    letter-spacing: 1.1px;
    text-transform: uppercase;
}

.hero-card .eyebrow {
    color: #fff;
    opacity: .8;
}

.grid {
    display: grid;
    gap: 20px;
}

.two-col {
    grid-template-columns: minmax(0, 1.25fr) minmax(300px, .75fr);
}

.dashboard-grid {
    margin-top: 24px;
}

.stack {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.card,
.metric-card,
.plan-card,
.boundary-card,
.summary-panel {
    border: 3px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--card-bg);
    box-shadow: var(--shadow);
}

.card {
    padding: 22px;
}

.card > h3,
.section-header h3 {
    margin-bottom: 14px;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
}

.section-header.compact {
    margin-bottom: 16px;
}

.section-header.compact h3 {
    margin: 2px 0 0;
}

.tag,
.advice-badge {
    display: inline-flex;
    align-items: center;
    white-space: nowrap;
    border: 2px solid var(--border);
    border-radius: 999px;
    font-size: 11px;
    font-weight: 900;
}

.tag {
    padding: 4px 9px;
    background: var(--surface-soft);
    color: var(--text-light);
}

.advice-badge {
    padding: 3px 8px;
    background: #fff4d6;
    color: #7c5200;
}

.btn {
    min-height: 42px;
    padding: 9px 16px;
    border: 3px solid var(--border);
    border-radius: var(--radius);
    background: var(--card-bg);
    box-shadow: var(--shadow-small);
    color: var(--text);
    cursor: pointer;
    font-size: 13px;
    font-weight: 900;
    transition: transform .12s ease, box-shadow .12s ease, opacity .12s ease;
}

.btn:hover:not(:disabled) {
    transform: translate(-1px, -1px);
}

.btn:active:not(:disabled) {
    transform: translate(3px, 3px);
    box-shadow: none;
}

.btn:disabled {
    cursor: not-allowed;
    opacity: .5;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

.btn-secondary {
    background: var(--secondary);
    color: #fff;
}

.btn-light {
    background: #fff;
    color: #1a1a2e;
}

.btn-ghost-light {
    border-color: #fff;
    background: transparent;
    box-shadow: 3px 3px 0 rgba(255,255,255,.55);
    color: #fff;
}

.btn-small {
    min-height: 36px;
    padding: 6px 10px;
    font-size: 11px;
}

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

.exercise-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.exercise-row {
    display: grid;
    grid-template-columns: 36px minmax(0, 1fr) auto;
    align-items: start;
    gap: 12px;
    padding: 14px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface-soft);
}

.exercise-row.done {
    opacity: .65;
}

.exercise-index {
    display: grid;
    width: 34px;
    height: 34px;
    place-items: center;
    border: 2px solid var(--border);
    border-radius: 50%;
    background: var(--primary);
    color: #fff;
    font-weight: 900;
}

.exercise-copy {
    min-width: 0;
}

.exercise-copy > strong,
.exercise-copy > span {
    display: block;
}

.exercise-copy > span {
    color: var(--text-light);
    font-size: 12px;
}

details {
    margin-top: 8px;
}

summary {
    color: var(--secondary);
    cursor: pointer;
    font-size: 12px;
    font-weight: 800;
}

details ul {
    margin: 8px 0 6px 18px;
}

details p,
details li {
    margin-top: 4px;
    color: var(--text-light);
    font-size: 12px;
}

.safety-copy {
    color: var(--danger) !important;
}

.source-copy,
.fine-print {
    color: var(--text-light);
    font-size: 11px;
}

.finish-workout-btn {
    width: 100%;
    margin-top: 4px;
}

.workout-timer {
    margin-bottom: 16px;
    padding: 16px;
    border: 3px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface-soft);
    box-shadow: var(--shadow-small);
}

.timer-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.timer-heading strong {
    display: block;
    margin-top: 3px;
    font-size: 18px;
}

.timer-value {
    min-width: 104px;
    color: var(--primary);
    font-size: 36px;
    font-weight: 900;
    letter-spacing: 1px;
    text-align: right;
}

.workout-timer > p {
    margin: 8px 0;
    color: var(--text-light);
    font-size: 12px;
}

.timer-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.exercise-row.skipped {
    opacity: .55;
    border-style: dashed;
}

.exercise-row.current {
    outline: 3px solid var(--accent);
    outline-offset: 2px;
}

.tip-list {
    display: flex;
    flex-direction: column;
    gap: 9px;
    margin: 8px 0 14px;
    padding-left: 20px;
}

.tip-list li::marker {
    color: var(--accent);
}

.progress-card {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.progress-card div {
    padding: 12px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface-soft);
}

.progress-card strong {
    display: block;
    margin-top: 4px;
    font-size: 26px;
}

.page-intro {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 20px;
    margin-bottom: 22px;
}

.page-intro h3 {
    margin: 3px 0;
    font-size: clamp(24px, 3vw, 34px);
}

.page-intro p {
    color: var(--text-light);
}

.notice {
    width: min(calc(100% - 32px), var(--content-width));
    margin: 18px auto;
    padding: 13px 16px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    font-size: 13px;
}

.content > .notice,
.page > .notice,
.card .notice,
.onboarding-main .notice {
    width: 100%;
    margin: 14px 0;
}

.notice-info {
    background: #eaf2ff;
    color: #163d73;
}

.notice-warning {
    background: #fff4d6;
    color: #714b00;
}

.notice-danger {
    background: #ffe8e8;
    color: #8f1d1d;
}

[data-theme="dark"] .notice-info { background: #1b3558; color: #d9e9ff; }
[data-theme="dark"] .notice-warning { background: #4b3a14; color: #ffe7a3; }
[data-theme="dark"] .notice-danger { background: #512424; color: #ffd8d8; }

.plan-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
}

.diet-summary-grid {
    margin: 18px 0 22px;
}

.diet-week-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 18px;
}

.diet-day-card {
    padding: 18px;
}

.diet-day-heading {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
}

.diet-day-heading h3 {
    margin-top: 2px;
}

.day-number {
    display: grid;
    width: 42px;
    height: 42px;
    flex: 0 0 auto;
    place-items: center;
    border: 3px solid var(--border);
    border-radius: 50%;
    background: var(--secondary);
    color: #fff;
    font-weight: 900;
}

.diet-meals {
    display: flex;
    flex-direction: column;
}

.diet-meals > div {
    display: grid;
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 10px;
    padding: 10px 0;
    border-bottom: 2px solid var(--border);
}

.diet-meals > div:last-child {
    border-bottom: 0;
}

.diet-meals dt {
    color: var(--text-light);
    font-weight: 800;
}

.diet-meals dd {
    overflow-wrap: anywhere;
}

.diet-sources {
    margin-top: 20px;
}

.diet-sources p {
    margin-bottom: 14px;
    color: var(--text-light);
}

.customization-card {
    margin: 18px 0 22px;
}

.customization-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 10px;
    margin-bottom: 14px;
}

.customization-item {
    padding: 13px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface-soft);
}

.customization-item > div {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
}

.customization-item span,
.customization-item p {
    color: var(--text-light);
    font-size: 12px;
}

.customization-item p {
    margin-top: 7px;
}

.legacy-customization-notice {
    grid-column: 1 / -1;
    margin: 0;
}

.plan-card {
    overflow: hidden;
    padding: 19px;
}

.plan-card.current {
    box-shadow: 8px 8px 0 var(--primary);
}

.plan-day-head {
    display: flex;
    align-items: start;
    justify-content: space-between;
    gap: 12px;
    margin-bottom: 12px;
}

.plan-day-head h4 {
    margin-top: 3px;
    font-size: 18px;
}

.plan-exercises {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.plan-exercise {
    padding: 9px 11px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface-soft);
}

.plan-exercise summary {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    list-style: none;
    color: var(--text);
}

.plan-exercise summary::-webkit-details-marker {
    display: none;
}

.plan-exercise summary small {
    color: var(--text-light);
}

.rest-copy {
    min-height: 80px;
    color: var(--text-light);
}

.advice-line {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-top: 15px;
    color: var(--text-light);
    font-size: 11px;
}

.metric-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 18px;
    margin-bottom: 22px;
}

.metric-card {
    padding: 20px;
}

.metric-card span,
.metric-card small {
    display: block;
    color: var(--text-light);
    font-size: 12px;
}

.metric-card strong {
    display: inline-block;
    margin: 4px 4px 0 0;
    color: var(--primary);
    font-size: 34px;
}

.form-grid {
    display: grid;
    gap: 16px;
}

.form-grid.two,
.form-grid:not(.two) {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 15px;
    color: var(--text-light);
    font-size: 13px;
    font-weight: 700;
}

.field input,
.field select,
.field textarea {
    width: 100%;
    min-height: 46px;
    padding: 10px 12px;
    border: 3px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface-soft);
    color: var(--text);
}

.field textarea {
    min-height: 94px;
    resize: vertical;
}

.field small {
    font-weight: 400;
}

.field-error,
.form-error {
    min-height: 22px;
    margin: 8px 0;
    color: var(--danger);
    font-size: 13px;
    font-weight: 800;
}

.timeline {
    display: flex;
    max-height: 400px;
    flex-direction: column;
    gap: 12px;
    overflow: auto;
}

.timeline-item {
    display: grid;
    grid-template-columns: 92px 1fr;
    gap: 12px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--border);
}

.timeline-item > span,
.timeline-item p {
    color: var(--text-light);
    font-size: 12px;
}

.weekly-review-card {
    margin-top: 20px;
}

.weekly-review-fields {
    grid-template-columns: repeat(3, minmax(0, 1fr)) !important;
}

.weekly-review-result {
    margin-top: 16px;
}

.review-suggestion {
    padding: 16px;
    border: 3px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface-soft);
}

.review-suggestion p {
    margin: 8px 0;
    color: var(--text-light);
}

.review-suggestion .button-row {
    margin-top: 12px;
}

.review-status {
    font-weight: 800;
}

.assistant-usage-guide {
    margin: 18px 0;
    overflow: hidden;
    border: 3px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--card-bg);
    box-shadow: var(--shadow-small);
}

.assistant-usage-guide summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 16px 18px;
    background: var(--surface-soft);
    cursor: pointer;
    list-style: none;
}

.assistant-usage-guide summary::-webkit-details-marker {
    display: none;
}

.assistant-usage-guide summary span:first-child {
    display: flex;
    align-items: baseline;
    gap: 10px;
}

.assistant-usage-guide summary strong {
    font-size: 17px;
}

.assistant-usage-guide summary small,
.usage-toggle {
    color: var(--text-light);
}

.usage-toggle {
    font-size: 11px;
    font-weight: 800;
}

.usage-steps {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
    margin: 0;
    padding: 18px;
    list-style: none;
}

.usage-steps li {
    display: flex;
    gap: 10px;
    min-width: 0;
    padding: 13px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface-soft);
}

.usage-steps li > span {
    display: grid;
    width: 28px;
    height: 28px;
    flex: 0 0 auto;
    place-items: center;
    border: 2px solid var(--border);
    border-radius: 50%;
    background: var(--secondary);
    font-weight: 900;
}

.usage-steps strong,
.usage-steps p {
    display: block;
}

.usage-steps p {
    margin: 5px 0 0;
    color: var(--text-light);
    font-size: 12px;
    line-height: 1.65;
}

.usage-notes {
    margin: 0 18px 18px;
    padding: 13px 15px;
    border-left: 5px solid var(--primary);
    background: color-mix(in srgb, var(--primary) 8%, var(--surface-soft));
}

.usage-notes p {
    margin: 5px 0;
    color: var(--text-light);
    font-size: 12px;
}

.assistant-chat-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 20px;
    margin-top: 30px;
}

.assistant-chat-heading h3,
.assistant-chat-heading p {
    margin: 4px 0 0;
}

.assistant-chat-heading p {
    color: var(--text-light);
    font-size: 13px;
}

.assistant-agent-capabilities {
    display: flex;
    align-items: center;
    gap: 9px;
    flex-wrap: wrap;
    margin: 12px 0 16px;
    padding: 12px 14px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    background: color-mix(in srgb, var(--secondary) 15%, var(--surface-soft));
}

.assistant-agent-capabilities > span {
    padding: 5px 9px;
    border: 2px solid var(--border);
    border-radius: 999px;
    background: var(--secondary);
    font-size: 11px;
    font-weight: 900;
}

.assistant-agent-capabilities > strong {
    font-size: 12px;
}

.assistant-agent-capabilities > strong::before {
    content: '✓';
    margin-right: 4px;
    color: var(--primary);
}

.assistant-agent-capabilities > small {
    width: 100%;
    color: var(--text-light);
}

.assistant-mode-panel {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(260px, 1fr);
    gap: 12px 20px;
    align-items: center;
    margin: 16px 0 20px;
    padding: 16px;
    border: 3px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface-soft);
}

.provider-control,
.provider-security-card {
    min-width: 0;
}

.provider-control .field {
    margin: 0;
}

.provider-control select {
    margin-top: 7px;
}

.provider-status-line {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 10px;
}

.provider-config-status {
    font-size: 12px;
    font-weight: 800;
    color: var(--text-light);
}

.provider-security-card {
    padding: 12px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    background: var(--card-bg);
}

.provider-security-card p {
    margin: 7px 0 10px;
    font-size: 12px;
}

.provider-security-card code {
    display: inline-block;
    max-width: 100%;
    padding: 2px 5px;
    border-radius: 5px;
    background: var(--surface-soft);
    overflow-wrap: anywhere;
}

.provider-test-result {
    display: inline-block;
    margin-left: 8px;
    font-size: 12px;
    font-weight: 800;
}

.assistant-mode-panel p {
    margin: 7px 0 0;
    color: var(--text-light);
}

.assistant-mode-panel > small {
    grid-column: 1 / -1;
    color: var(--text-light);
}

.mode-status {
    display: inline-flex;
    padding: 5px 10px;
    border: 2px solid var(--border);
    border-radius: 999px;
    font-size: 12px;
    font-weight: 900;
}

.mode-local { background: var(--surface-soft); }
.mode-ready { background: color-mix(in srgb, var(--secondary) 28%, var(--surface-soft)); }
.mode-remote { background: color-mix(in srgb, var(--accent) 28%, var(--surface-soft)); }

.assistant-send-consent {
    grid-column: 1 / -1;
    min-width: 0;
    margin: 0;
    padding: 12px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    background: var(--card-bg);
    overflow-wrap: anywhere;
}

.assistant-send-consent input:disabled + span {
    color: var(--text-light);
}

.assistant-layout {
    display: grid;
    grid-template-columns: 230px minmax(0, 1fr);
    gap: 20px;
}

.quick-prompts {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.prompt-chip {
    min-height: 48px;
    padding: 10px 14px;
    border: 3px solid var(--border);
    border-radius: var(--radius);
    background: var(--card-bg);
    box-shadow: var(--shadow-small);
    color: var(--text);
    cursor: pointer;
    font-weight: 800;
    text-align: left;
}

.agent-prompt-primary {
    background: var(--primary);
    color: #fff;
}

.chat-box {
    overflow: hidden;
    border: 3px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--card-bg);
    box-shadow: var(--shadow);
}

.chat-messages {
    display: flex;
    min-height: 330px;
    max-height: 520px;
    flex-direction: column;
    gap: 14px;
    overflow-y: auto;
    padding: 20px;
}

.chat-welcome {
    margin: auto;
    padding: 22px;
    color: var(--text-light);
    text-align: center;
}

.chat-message {
    display: flex;
    align-items: flex-start;
    gap: 10px;
}

.chat-message.user-message {
    flex-direction: row-reverse;
}

.chat-message.user-message .avatar {
    background: var(--accent);
}

.chat-message.user-message .bubble {
    background: color-mix(in srgb, var(--primary) 12%, var(--surface-soft));
}

.chat-message .avatar {
    display: grid;
    width: 36px;
    height: 36px;
    flex: 0 0 auto;
    place-items: center;
    border: 2px solid var(--border);
    border-radius: 50%;
    background: var(--secondary);
}

.bubble {
    max-width: 760px;
    padding: 13px;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface-soft);
}

.bubble p {
    margin: 8px 0;
    white-space: pre-wrap;
    overflow-wrap: anywhere;
}

.bubble small {
    color: var(--text-light);
}

.pending-message .bubble {
    min-width: min(100%, 280px);
    border-style: dashed;
    background: color-mix(in srgb, var(--secondary) 14%, var(--surface-soft));
}

.pending-message .bubble p {
    margin-bottom: 5px;
}

.typing-dots {
    display: inline-flex;
    gap: 4px;
    align-items: center;
    height: 14px;
}

.typing-dots i {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--primary);
    animation: typing-pulse 1s infinite ease-in-out;
}

.typing-dots i:nth-child(2) { animation-delay: .15s; }
.typing-dots i:nth-child(3) { animation-delay: .3s; }

@keyframes typing-pulse {
    0%, 70%, 100% { opacity: .25; transform: translateY(0); }
    35% { opacity: 1; transform: translateY(-3px); }
}

.template-mode-bar {
    display: flex;
    justify-content: space-between;
    gap: 12px;
    padding: 12px 16px;
    border-top: 3px solid var(--border);
    background: var(--surface-soft);
    color: var(--text-light);
    font-size: 11px;
}

.assistant-composer {
    padding: 14px 16px 10px;
    border-top: 3px solid var(--border);
    background: var(--card-bg);
}

.assistant-composer textarea {
    width: 100%;
    min-height: 72px;
    padding: 11px 12px;
    resize: vertical;
    border: 3px solid var(--border);
    border-radius: var(--radius);
    background: var(--surface-soft);
    color: var(--text);
}

.composer-actions {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 8px;
}

.composer-actions span {
    color: var(--text-light);
    font-size: 12px;
}

.assistant-composer .field-error {
    margin-bottom: 0;
}

.profile-summary,
.summary-list {
    display: flex;
    flex-direction: column;
}

.profile-summary div,
.summary-list div {
    display: grid;
    grid-template-columns: 110px 1fr;
    gap: 12px;
    padding: 11px 0;
    border-bottom: 2px solid var(--border);
}

.profile-summary dt,
.summary-list dt {
    color: var(--text-light);
}

.profile-summary dd,
.summary-list dd {
    font-weight: 800;
}

.storage-card p {
    margin-bottom: 20px;
    color: var(--text-light);
}

.empty-state {
    padding: 26px;
    border: 2px dashed var(--text-light);
    border-radius: var(--radius);
    color: var(--text-light);
    text-align: center;
}

.onboarding-shell {
    display: grid;
    min-height: 100vh;
    grid-template-columns: minmax(320px, .8fr) minmax(520px, 1.2fr);
    background: var(--bg);
}

.onboarding-aside {
    position: sticky;
    top: 0;
    display: flex;
    height: 100vh;
    flex-direction: column;
    justify-content: space-between;
    padding: 46px;
    border-right: 3px solid var(--border);
    background: linear-gradient(145deg, var(--secondary), #8f62ef);
    color: #fff;
}

.onboarding-aside .logo {
    padding: 0;
    border: 0;
}

.onboarding-aside .logo p,
.onboarding-aside .eyebrow {
    color: #fff;
    opacity: .8;
}

.onboarding-aside h2 {
    max-width: 520px;
    margin: 8px 0 16px;
    font-size: clamp(30px, 4vw, 50px);
    line-height: 1.12;
}

.onboarding-aside > div > p {
    max-width: 520px;
    opacity: .86;
}

.local-data-note {
    padding: 18px;
    border: 2px solid rgba(255,255,255,.7);
    border-radius: var(--radius);
    background: rgba(255,255,255,.1);
}

.local-data-note p {
    margin-top: 5px;
    font-size: 12px;
}

.onboarding-main {
    width: min(100%, 780px);
    margin: auto;
    padding: 48px;
}

.step-header {
    margin-bottom: 28px;
    color: var(--text-light);
    font-size: 12px;
    font-weight: 800;
}

.step-track {
    height: 8px;
    margin-top: 9px;
    overflow: hidden;
    border: 2px solid var(--border);
    border-radius: 999px;
    background: var(--card-bg);
}

.step-track span {
    display: block;
    height: 100%;
    background: var(--primary);
    transition: width .2s ease;
}

.assessment-step {
    display: none;
}

.assessment-step.active {
    display: block;
    animation: enter .2s ease;
}

.assessment-step h3 {
    margin: 5px 0 22px;
    font-size: clamp(25px, 4vw, 36px);
}

.boundary-card,
.summary-panel {
    margin: 16px 0 22px;
    padding: 22px;
}

.boundary-card {
    background: var(--card-bg);
}

.boundary-card h4 {
    margin-bottom: 8px;
    color: var(--primary);
    font-size: 18px;
}

fieldset {
    margin: 18px 0;
    border: 0;
}

legend {
    margin-bottom: 10px;
    color: var(--text-light);
    font-size: 13px;
    font-weight: 800;
}

.choice-group,
.check-group {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.choice-group legend,
.check-group legend {
    width: 100%;
}

.choice input {
    position: absolute;
    opacity: 0;
}

.choice span,
.check-row {
    display: flex;
    min-height: 46px;
    align-items: center;
    gap: 9px;
    padding: 10px 14px;
    border: 3px solid var(--border);
    border-radius: var(--radius);
    background: var(--card-bg);
    cursor: pointer;
    font-weight: 800;
}

.choice input:checked + span {
    background: var(--primary);
    box-shadow: var(--shadow-small);
    color: #fff;
}

.choice input:focus-visible + span {
    outline: 3px solid #ffb400;
    outline-offset: 3px;
}

.check-row input {
    width: 20px;
    height: 20px;
    accent-color: var(--primary);
}

.consent-row {
    align-items: flex-start;
    margin-top: 20px;
    background: var(--surface-soft);
    font-weight: 700;
}

.risk-list {
    display: flex;
    flex-direction: column;
    gap: 9px;
}

.risk-list .check-row {
    width: 100%;
}

.step-actions {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    margin-top: 24px;
}

.modal {
    position: fixed;
    inset: 0;
    z-index: 300;
    display: grid;
    place-items: center;
    padding: 20px;
    background: rgba(0,0,0,.55);
}

.modal-content {
    width: min(100%, 520px);
    padding: 24px;
    border: 3px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--card-bg);
    box-shadow: var(--shadow);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    margin-bottom: 14px;
}

.modal-close {
    width: 38px;
    height: 38px;
    border: 0;
    background: transparent;
    color: var(--text-light);
    cursor: pointer;
    font-size: 28px;
}

.modal-actions {
    justify-content: flex-end;
    margin-top: 20px;
}

.toast {
    position: fixed;
    right: 24px;
    bottom: 24px;
    z-index: 500;
    max-width: min(420px, calc(100vw - 32px));
    padding: 13px 17px;
    border: 3px solid var(--border);
    border-radius: var(--radius);
    background: var(--accent);
    box-shadow: var(--shadow);
    color: #fff;
    font-weight: 800;
    opacity: 0;
    pointer-events: none;
    transform: translateY(12px);
    transition: opacity .2s ease, transform .2s ease;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast-error {
    background: var(--danger);
}

.sidebar-overlay {
    display: none;
}

@media (max-width: 980px) {
    .two-col {
        grid-template-columns: 1fr;
    }

    .onboarding-shell {
        grid-template-columns: minmax(260px, .65fr) minmax(480px, 1.35fr);
    }

    .onboarding-aside,
    .onboarding-main {
        padding: 32px;
    }
}

@media (max-width: 768px) {
    .sidebar {
        inset: auto 0 0;
        width: 100%;
        height: 72px;
        border-top: 3px solid var(--border);
        border-right: 0;
        box-shadow: 0 -4px 0 var(--border);
    }

    .sidebar .logo,
    .sidebar-footer {
        display: none;
    }

    .nav {
        display: grid;
        grid-template-columns: repeat(6, 1fr);
        gap: 0;
        padding: 5px;
    }

    .nav-item {
        min-width: 0;
        min-height: 58px;
        flex-direction: column;
        justify-content: center;
        gap: 1px;
        padding: 4px 2px;
        border-width: 2px;
        font-size: 10px;
    }

    .nav-item:hover {
        transform: none;
    }

    .nav-icon {
        font-size: 18px;
    }

    .main {
        margin-left: 0;
        padding-bottom: 72px;
    }

    .header {
        min-height: 64px;
        padding: 8px 14px;
    }

    .header-subtitle {
        display: none;
    }

    .menu-toggle {
        display: none;
    }

    .user-avatar {
        display: none;
    }

    .content {
        padding: 16px;
    }

    .hero-card {
        min-height: 0;
        align-items: flex-start;
        padding: 22px;
    }

    .hero-stat {
        min-width: 82px;
    }

    .stat-circle {
        width: 74px;
        height: 74px;
        font-size: 18px;
    }

    .hero-actions,
    .button-row,
    .intro-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .exercise-row {
        grid-template-columns: 34px minmax(0, 1fr);
    }

    .exercise-toggle {
        grid-column: 1 / -1;
        width: 100%;
    }

    .timer-heading,
    .timer-actions {
        align-items: stretch;
        flex-direction: column;
    }

    .timer-value {
        text-align: left;
    }

    .timer-actions .btn {
        width: 100%;
    }

    .page-intro {
        align-items: stretch;
        flex-direction: column;
    }

    .metric-grid {
        grid-template-columns: 1fr;
    }

    .assistant-layout {
        grid-template-columns: 1fr;
    }

    .assistant-mode-panel {
        grid-template-columns: 1fr;
    }

    .usage-steps {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }


    .assistant-chat-heading {
        align-items: flex-start;
        flex-direction: column;
        gap: 4px;
    }

    .customization-list {
        grid-template-columns: 1fr;
    }

    .quick-prompts {
        display: grid;
        grid-template-columns: 1fr 1fr;
    }

    .onboarding-shell {
        display: block;
    }

    .onboarding-aside {
        position: static;
        height: auto;
        min-height: 340px;
        padding: 26px 20px;
        border-right: 0;
        border-bottom: 3px solid var(--border);
    }

    .onboarding-aside h2 {
        margin-top: 6px;
        font-size: 30px;
    }

    .onboarding-logo,
    .local-data-note {
        display: none !important;
    }

    .onboarding-main {
        width: 100%;
        padding: 26px 18px 40px;
    }

    .form-grid.two,
    .form-grid:not(.two) {
        grid-template-columns: 1fr;
    }

    .weekly-review-fields {
        grid-template-columns: 1fr !important;
    }

    .choice-group,
    .check-group {
        flex-direction: column;
    }

    .choice,
    .choice span,
    .check-row {
        width: 100%;
    }

    .step-actions {
        position: sticky;
        bottom: 0;
        z-index: 10;
        margin: 20px -18px -40px;
        padding: 14px 18px;
        border-top: 3px solid var(--border);
        background: var(--card-bg);
    }

    .step-actions .btn {
        flex: 1;
    }

    .profile-summary div,
    .summary-list div {
        grid-template-columns: 1fr;
        gap: 2px;
    }

    .template-mode-bar {
        flex-direction: column;
    }

    .toast {
        right: 16px;
        bottom: 92px;
    }
}

@media (max-width: 430px) {
    .assistant-mode-panel,
    .chat-messages,
    .assistant-composer {
        padding-right: 12px;
        padding-left: 12px;
    }

    .composer-actions {
        align-items: stretch;
        flex-wrap: wrap;
    }

    .composer-actions .btn {
        flex: 1;
    }

    .hero-card {
        flex-direction: column;
    }

    .hero-stat {
        display: flex;
        width: 100%;
        align-items: center;
        gap: 10px;
        text-align: left;
    }

    .stat-circle {
        margin: 0;
    }

    .progress-card,
    .quick-prompts,
    .usage-steps {
        grid-template-columns: 1fr;
    }

    .assistant-usage-guide summary span:first-child {
        align-items: flex-start;
        flex-direction: column;
        gap: 2px;
    }

    .plan-grid {
        grid-template-columns: 1fr;
    }

    .diet-week-grid {
        grid-template-columns: 1fr;
    }

    .card,
    .plan-card,
    .metric-card {
        padding: 17px;
    }

    .timeline-item {
        grid-template-columns: 1fr;
        gap: 3px;
    }

    .modal-actions {
        align-items: stretch;
        flex-direction: column-reverse;
    }

    .modal-actions .btn {
        width: 100%;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        scroll-behavior: auto !important;
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
    }
}