:root {
    --white: #ffffff;
    --navy: #0a1628;
    --soft-gray: #f5f7fa;
    --clinical-blue: #2c5cf5;
    --clinical-blue-dark: #1e40af;
    --clinical-blue-soft: #eff6ff;
    --success: #10b981;
    --warning: #f59e0b;
    --alert: #ef4444;
    --info: #3b82f6;
    --text-primary: #1f2937;
    --text-secondary: #6b7280;
    --text-muted: #94a3b8;
    --border-light: #e5e7eb;
    --border-medium: #d1d5db;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 10px rgba(15, 23, 42, 0.05);
    --shadow-lg: 0 10px 15px rgba(15, 23, 42, 0.08);
    --shadow-xl: 0 20px 25px rgba(15, 23, 42, 0.1);
    --focus-ring: 0 0 0 3px rgba(44, 92, 245, 0.12);
    --ease-apple: cubic-bezier(0.4, 0, 0.2, 1);
    --page-width: 1280px;
    --content-width: 960px;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    scrollbar-color: rgba(10, 22, 40, 0.28) rgba(255, 255, 255, 0.42);
    scrollbar-width: thin;
}

body {
    margin: 0;
    font-family: "Inter", -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", sans-serif;
    color: var(--text-primary);
    background:
        radial-gradient(circle at top left, rgba(44, 92, 245, 0.08), transparent 28%),
        radial-gradient(circle at right 18%, rgba(16, 185, 129, 0.06), transparent 26%),
        linear-gradient(180deg, #fcfdff 0%, #f3f6fb 100%);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.42);
}

::-webkit-scrollbar-thumb {
    background: rgba(10, 22, 40, 0.28);
    border: 2px solid rgba(255, 255, 255, 0.42);
    border-radius: 999px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(10, 22, 40, 0.4);
}

[hidden] {
    display: none !important;
}

img {
    display: block;
    max-width: 100%;
}

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

a {
    color: inherit;
    text-decoration: none;
}

.nowrap {
    white-space: nowrap;
}

button {
    border: 0;
    background: none;
    cursor: pointer;
}

button:focus-visible,
input:focus-visible,
select:focus-visible,
a:focus-visible,
.upload-zone:focus-within {
    outline: none;
    box-shadow: var(--focus-ring);
}

.app-shell {
    min-height: 100vh;
    padding: 0 24px 40px;
}

.topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    padding: 16px 0;
}

.topbar--solid .topbar__inner {
    background: rgba(255, 255, 255, 0.94);
}

.topbar__inner {
    max-width: var(--page-width);
    margin: 0 auto;
    padding: 12px 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    border-radius: 20px;
    border: 1px solid rgba(10, 22, 40, 0.05);
    background: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(20px);
    box-shadow: var(--shadow-sm);
    transition: background-color 200ms var(--ease-apple), box-shadow 200ms var(--ease-apple);
}

.topbar__inner > * {
    min-width: 0;
}

.brand {
    display: inline-flex;
    align-items: center;
}

.brand__wordmark {
    height: 56px;
    width: auto;
}

.nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav a {
    position: relative;
    color: var(--text-secondary);
    font-size: 15px;
    font-weight: 500;
    transition: color 200ms var(--ease-apple);
}

.nav a::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    bottom: -8px;
    height: 2px;
    background: var(--clinical-blue);
    transform: scaleX(0);
    transition: transform 200ms var(--ease-apple);
}

.nav a:hover,
.nav a.is-active {
    color: var(--navy);
}

.nav a:hover::after,
.nav a.is-active::after {
    transform: scaleX(1);
}

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

.icon-button,
.profile-pill {
    min-height: 40px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0 16px;
    background: var(--white);
    border: 1px solid var(--border-light);
    color: var(--text-secondary);
    box-shadow: var(--shadow-sm);
}

.mobile-nav-toggle {
    display: none;
    width: 40px;
    padding: 0;
    flex-direction: column;
    gap: 4px;
}

.mobile-nav-toggle span {
    width: 18px;
    height: 2px;
    background: var(--navy);
    border-radius: 999px;
}

.profile-pill {
    width: 40px;
    padding: 0;
    color: var(--clinical-blue);
    font-weight: 700;
}

.mobile-nav {
    max-width: var(--page-width);
    margin: 8px auto 0;
    padding: 14px;
    display: none;
    flex-direction: column;
    gap: 12px;
    background: rgba(255, 255, 255, 0.92);
    border: 1px solid rgba(10, 22, 40, 0.06);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
}

.page-container {
    max-width: var(--page-width);
    margin: 0 auto;
}

.page-container,
.route-view,
.results-grid,
.upload-layout,
.technical-shell,
.technical-content,
.history-group,
.footer-grid,
.page-header--results,
.panel-header,
.history-card,
.nodule-card {
    min-width: 0;
}

.route-view {
    animation: routeFade 320ms var(--ease-apple);
}

.page-entrance {
    animation: pageRise 420ms var(--ease-apple);
}

.page-entrance--delay {
    animation-delay: 120ms;
    animation-fill-mode: both;
}

.hero {
    min-height: calc(100vh - 140px);
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(360px, 0.85fr);
    gap: 48px;
    align-items: center;
}

.eyebrow {
    margin: 0 0 14px;
    color: var(--clinical-blue);
    text-transform: uppercase;
    letter-spacing: 0.14em;
    font-size: 12px;
    font-weight: 700;
}

.hero h1,
.page-header h1 {
    margin: 0;
    color: var(--navy);
    font-size: clamp(3rem, 7vw, 4.5rem);
    line-height: 0.98;
    letter-spacing: -0.03em;
}

.hero__subtitle {
    margin: 18px 0 0;
    font-size: 24px;
    line-height: 1.35;
    color: var(--text-secondary);
}

.hero__lede,
.page-header p,
.section-copy p,
.feature-card p,
.step-card p,
.stat-card span,
.summary-text,
.history-card__file,
.history-card__score,
.empty-state p,
.modal__body p,
.settings-group label {
    color: var(--text-secondary);
    line-height: 1.7;
}

.hero__lede {
    max-width: 52ch;
    margin: 24px 0 0;
    font-size: 18px;
}

.hero__actions,
.page-header__actions {
    margin-top: 40px;
    display: flex;
    flex-wrap: wrap;
    gap: 16px;
}

.button {
    min-height: 48px;
    padding: 0 24px;
    border-radius: var(--radius-sm);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    font-weight: 600;
    transition:
        background-color 200ms var(--ease-apple),
        color 200ms var(--ease-apple),
        border-color 200ms var(--ease-apple),
        transform 200ms var(--ease-apple),
        box-shadow 200ms var(--ease-apple);
}

.button:hover {
    transform: translateY(-1px);
}

.button--hero {
    min-height: 56px;
    padding: 0 48px;
    color: var(--white);
    background: var(--clinical-blue);
    box-shadow: 0 1px 2px rgba(44, 92, 245, 0.16);
}

.button--primary {
    color: var(--white);
    background: linear-gradient(135deg, var(--clinical-blue) 0%, #3b82f6 100%);
    box-shadow: 0 1px 2px rgba(44, 92, 245, 0.16);
}

.button--primary:hover,
.button--hero:hover {
    background: var(--clinical-blue-dark);
    box-shadow: 0 4px 12px rgba(44, 92, 245, 0.22);
}

.button--secondary {
    color: var(--clinical-blue);
    background: rgba(255, 255, 255, 0.82);
    border: 1.5px solid rgba(44, 92, 245, 0.18);
}

.button--secondary:hover {
    background: var(--clinical-blue-soft);
    border-color: var(--clinical-blue);
}

.button--ghost {
    color: var(--text-secondary);
    background: transparent;
}

.button--ghost:hover {
    color: var(--text-primary);
    background: var(--soft-gray);
}

.button--danger {
    color: #b91c1c;
}

.button--danger:hover {
    background: rgba(239, 68, 68, 0.08);
}

.scroll-hint {
    margin-top: 40px;
}

.scroll-hint span {
    width: 18px;
    height: 18px;
    border-radius: 999px;
    display: inline-block;
    background: rgba(44, 92, 245, 0.24);
    animation: pulseHint 2s infinite var(--ease-apple);
}

.hero__visual {
    position: relative;
    min-height: 520px;
    display: grid;
    place-items: center;
}

.hero__visual-glow {
    position: absolute;
    inset: 10% 14%;
    border-radius: 32px;
    background:
        radial-gradient(circle at center, rgba(44, 92, 245, 0.18), transparent 55%),
        radial-gradient(circle at 65% 40%, rgba(59, 130, 246, 0.16), transparent 32%);
    filter: blur(18px);
}

.hero__visual-card,
.card,
.stat-card,
.step-card,
.feature-card,
.history-card,
.sample-card {
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid rgba(10, 22, 40, 0.06);
    box-shadow: var(--shadow-md);
}

.hero__visual-card {
    position: relative;
    z-index: 1;
    width: min(100%, 460px);
    padding: 28px;
    border-radius: 28px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.95), rgba(244, 248, 255, 0.92));
    border: 1px solid rgba(44, 92, 245, 0.08);
    box-shadow: var(--shadow-xl);
}

.hero__visual-card img {
    width: 100%;
}

.hero__visual-copy {
    margin-top: 18px;
}

.hero__visual-copy p {
    margin: 0;
    font-size: 22px;
    font-weight: 700;
    color: var(--navy);
}

.hero__visual-copy span {
    display: block;
    margin-top: 6px;
    color: var(--text-secondary);
    font-size: 15px;
}

.hero__symbol {
    position: absolute;
    right: 12px;
    bottom: 22px;
    width: 128px;
    opacity: 0.18;
}

.section-block {
    padding: 96px 0 0;
}

.section-copy h2,
.panel-header h2,
.panel-header h3,
.modal__header h2,
.card h3,
.empty-state h3 {
    margin: 0;
    color: var(--navy);
    letter-spacing: -0.02em;
}

.section-copy h2 {
    font-size: clamp(2rem, 3vw, 3rem);
    max-width: 16ch;
}

.steps-grid,
.stats-grid,
.feature-grid {
    margin-top: 28px;
    display: grid;
    gap: 24px;
}

.steps-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.stats-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.step-card,
.stat-card,
.feature-card,
.card,
.history-card,
.sample-card {
    padding: 28px;
    border-radius: var(--radius-lg);
}

.step-card:hover,
.feature-card:hover,
.history-card:hover,
.sample-card:hover {
    box-shadow: var(--shadow-lg);
}

.step-badge {
    width: 80px;
    height: 80px;
    margin-bottom: 28px;
    border-radius: 999px;
    display: grid;
    place-items: center;
    color: var(--clinical-blue);
    background: var(--clinical-blue-soft);
    font-size: 32px;
    font-weight: 700;
}

.step-card h3,
.feature-card h3 {
    margin: 0 0 12px;
    color: var(--navy);
    font-size: 24px;
}

.stat-card strong {
    display: block;
    color: var(--navy);
    font-size: clamp(2.2rem, 5vw, 3rem);
    letter-spacing: -0.03em;
}

.cta-panel {
    margin-top: 96px;
    padding: 40px;
    border-radius: 28px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.96) 0%, rgba(239, 244, 255, 0.98) 100%);
    border: 1px solid rgba(44, 92, 245, 0.08);
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.page-header {
    width: 100%;
    padding: 56px 0 20px;
}

.page-header p {
    margin: 14px 0 0;
    font-size: 18px;
}

.back-link,
.breadcrumb {
    display: inline-block;
    margin-bottom: 14px;
    color: var(--text-secondary);
    font-size: 14px;
}

.upload-layout {
    display: grid;
    gap: 32px;
    grid-template-columns: minmax(0, 1.2fr) minmax(280px, 360px);
    align-items: start;
    width: min(100%, 1120px);
    margin: 0 auto;
}

.upload-focus {
    padding: 32px;
}

.upload-zone {
    position: relative;
    min-height: 340px;
    padding: 36px;
    border-radius: 24px;
    border: 2px dashed var(--border-medium);
    background:
        radial-gradient(circle at top, rgba(44, 92, 245, 0.05), transparent 44%),
        linear-gradient(180deg, rgba(255, 255, 255, 0.96), rgba(245, 247, 250, 0.88));
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    transition: border-color 200ms var(--ease-apple), transform 200ms var(--ease-apple), box-shadow 200ms var(--ease-apple);
}

.upload-zone:hover,
.upload-zone.is-dragging {
    border-color: var(--clinical-blue);
    transform: translateY(-1px);
}

.upload-zone input {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

.upload-zone__icon {
    width: 88px;
    height: 88px;
    margin-bottom: 20px;
    border-radius: 999px;
    display: grid;
    place-items: center;
    background: linear-gradient(180deg, rgba(44, 92, 245, 0.14), rgba(44, 92, 245, 0.06));
}

.upload-zone__icon img {
    width: 56px;
    height: 56px;
}

.upload-zone h2 {
    margin: 0;
    max-width: 14ch;
    color: var(--navy);
    font-size: 36px;
    line-height: 1.1;
}

.upload-zone p {
    margin: 14px 0 0;
    color: var(--text-secondary);
}

.selected-file-panel {
    margin-top: 20px;
    padding: 24px;
    border-radius: var(--radius-lg);
    background: linear-gradient(180deg, rgba(239, 244, 255, 0.95), rgba(255, 255, 255, 0.96));
    border: 1px solid rgba(44, 92, 245, 0.12);
}

.selected-file__header strong {
    display: block;
    color: var(--navy);
    font-size: 18px;
    overflow-wrap: anywhere;
    word-break: break-word;
}

.selected-file__header p {
    margin: 6px 0 0;
    overflow-wrap: anywhere;
    word-break: break-word;
}

.file-facts {
    margin-top: 18px;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}

.file-facts div,
.timing-grid div {
    padding: 14px;
    border-radius: 12px;
    background: var(--soft-gray);
}

.file-facts span,
.timing-grid span,
.risk-banner__metrics span {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 12px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.file-facts strong,
.timing-grid strong {
    color: var(--navy);
    font-size: 16px;
    display: block;
    line-height: 1.35;
    overflow-wrap: anywhere;
    word-break: break-word;
}

.selected-file__actions {
    margin-top: 18px;
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

.pulse-button {
    animation: pulseButton 2s infinite var(--ease-apple);
}

.upload-divider {
    margin: 22px 0;
    text-align: center;
}

.upload-divider span {
    color: var(--text-muted);
    font-size: 13px;
    letter-spacing: 0.08em;
}

.sample-card {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 18px;
    text-align: left;
}

.sample-card__icon {
    width: 52px;
    height: 52px;
    border-radius: 16px;
    display: grid;
    place-items: center;
    background: var(--soft-gray);
    color: var(--clinical-blue);
    font-size: 28px;
}

.sample-card__copy strong,
.history-card h3 {
    display: block;
    color: var(--navy);
    font-size: 18px;
}

.sample-card__copy small {
    display: block;
    margin-top: 4px;
    color: var(--text-secondary);
    font-size: 14px;
}

.upload-sidebar {
    display: grid;
    gap: 24px;
}

.recent-uploads {
    margin-top: 18px;
    display: grid;
    gap: 14px;
}

.recent-upload-item {
    padding: 16px;
    border-radius: 12px;
    border: 1px solid var(--border-light);
    background: var(--white);
}

.recent-upload-item strong {
    display: block;
    color: var(--navy);
}

.recent-upload-item p {
    margin: 6px 0 0;
    color: var(--text-secondary);
    font-size: 14px;
}

.status-banner {
    margin-top: 18px;
    padding: 14px 16px;
    border-radius: 12px;
    font-size: 14px;
}

.status-banner--warning {
    color: #92400e;
    background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
    border: 1px solid rgba(245, 158, 11, 0.18);
}

.analysis-view {
    min-height: calc(100vh - 180px);
    display: grid;
    place-content: center;
    justify-items: center;
    text-align: center;
}

.analysis-pulse {
    width: 60px;
    height: 60px;
    border-radius: 999px;
    display: grid;
    place-items: center;
    animation: analysisPulse 2s infinite var(--ease-apple);
}

.analysis-pulse img {
    width: 60px;
    height: 60px;
    object-fit: contain;
}

.analysis-view h1 {
    margin: 28px 0 12px;
    color: var(--navy);
    font-size: 32px;
}

.analysis-detail {
    margin: 0;
    font-size: 18px;
}

.analysis-steps {
    margin-top: 20px;
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    justify-content: center;
}

.analysis-steps span {
    padding: 8px 14px;
    border-radius: 999px;
    background: var(--soft-gray);
    color: var(--text-secondary);
    transition: all 250ms var(--ease-apple);
}

.analysis-steps .is-active {
    background: rgba(44, 92, 245, 0.12);
    color: var(--clinical-blue);
}

.progress-module {
    margin-top: 28px;
    width: min(420px, 100%);
}

.progress-track,
.progress-bar {
    height: 8px;
    border-radius: 999px;
    background: var(--border-light);
    overflow: hidden;
}

.progress-track span,
.progress-bar span {
    display: block;
    height: 100%;
    width: 0;
    border-radius: inherit;
    transition: width 500ms var(--ease-apple);
}

.progress-track span {
    background: linear-gradient(90deg, #60a5fa 0%, var(--clinical-blue) 100%);
}

.progress-module strong {
    display: block;
    margin-top: 12px;
    color: var(--navy);
}

.page-header--results {
    max-width: none;
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    gap: 24px;
}

.scan-detail-grid {
    margin-top: 20px;
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 12px;
}

.scan-detail-grid div {
    padding: 14px;
    border-radius: 12px;
    background: rgba(255, 255, 255, 0.72);
    border: 1px solid rgba(10, 22, 40, 0.05);
}

.scan-detail-grid span {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 12px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.scan-detail-grid strong {
    color: var(--navy);
    display: block;
    line-height: 1.35;
    overflow-wrap: anywhere;
    word-break: break-word;
}

.risk-banner {
    margin-top: 12px;
    padding: 24px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--success);
}

.risk-banner--low {
    background: linear-gradient(135deg, #ecfdf5 0%, #d1fae5 100%);
    border-left-color: var(--success);
}

.risk-banner--medium {
    background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
    border-left-color: var(--warning);
}

.risk-banner--high {
    background: linear-gradient(135deg, #fef2f2 0%, #fee2e2 100%);
    border-left-color: var(--alert);
}

.risk-banner__identity,
.risk-banner__metrics {
    display: flex;
    align-items: center;
    gap: 18px;
}

.risk-banner__icon {
    width: 48px;
    height: 48px;
    border-radius: 999px;
    display: grid;
    place-items: center;
    color: var(--white);
    font-weight: 700;
    background: var(--success);
}

.risk-banner--medium .risk-banner__icon {
    background: var(--warning);
}

.risk-banner--high .risk-banner__icon {
    background: var(--alert);
}

.risk-banner__label {
    margin: 0 0 6px;
    color: var(--text-secondary);
    font-size: 13px;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.risk-banner__identity h2 {
    margin: 0;
    color: var(--navy);
    font-size: 28px;
}

.risk-banner__recommendation {
    display: block;
    margin-top: 6px;
    color: var(--text-secondary);
    font-size: 15px;
}

.risk-banner__metrics {
    margin-left: auto;
}

.risk-banner__metrics strong {
    color: var(--navy);
    font-size: 18px;
}

.results-grid {
    margin-top: 32px;
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(340px, 0.8fr);
    gap: 32px;
    align-items: start;
}

.results-sidebar {
    display: grid;
    gap: 24px;
}

.results-main {
    position: sticky;
    top: 104px;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 20px;
}

.scan-stage {
    min-height: 420px;
    border-radius: 20px;
    background: #02060d;
    display: grid;
    place-items: center;
    overflow: hidden;
}

.scan-stage img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.scan-placeholder {
    padding: 36px;
    text-align: center;
    color: rgba(255, 255, 255, 0.74);
}

.scan-placeholder img {
    width: min(240px, 60%);
    margin: 0 auto 24px;
    opacity: 0.65;
}

.legend {
    margin-top: 20px;
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    color: var(--text-secondary);
}

.dot {
    width: 10px;
    height: 10px;
    border-radius: 999px;
    display: inline-block;
    margin-right: 8px;
}

.dot--high {
    background: var(--alert);
}

.dot--medium {
    background: var(--warning);
}

.dot--low {
    background: var(--success);
}

.filter-select,
.search-input {
    min-height: 44px;
    padding: 0 14px;
    border-radius: 10px;
    border: 1px solid var(--border-medium);
    background: var(--white);
    color: var(--navy);
}

.timing-grid {
    margin-top: 18px;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 12px;
}

.empty-state {
    padding: 28px;
    border-radius: 20px;
    text-align: center;
    background: linear-gradient(135deg, #effcf7 0%, #ffffff 100%);
}

.empty-state__icon {
    width: 72px;
    height: 72px;
    margin: 0 auto 20px;
    border-radius: 999px;
    display: grid;
    place-items: center;
    color: var(--white);
    background: var(--success);
    font-size: 30px;
    font-weight: 700;
}

.nodules-list,
.history-groups {
    display: grid;
    gap: 18px;
}

.nodule-card {
    padding: 20px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-light);
    background: var(--white);
    box-shadow: var(--shadow-sm);
}

.nodule-card__top,
.history-card__row,
.metric-block__row,
.history-card__actions {
    display: flex;
    justify-content: space-between;
    gap: 16px;
    align-items: center;
}

.risk-pill {
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
}

.risk-pill--low {
    color: #047857;
    background: rgba(16, 185, 129, 0.12);
}

.risk-pill--medium {
    color: #b45309;
    background: rgba(245, 158, 11, 0.14);
}

.risk-pill--high {
    color: #b91c1c;
    background: rgba(239, 68, 68, 0.12);
}

.nodule-location {
    margin: 12px 0 20px;
    font-size: 14px;
    color: var(--text-secondary);
}

.metric-block + .metric-block,
.recommendation-block {
    margin-top: 18px;
}

.metric-block__row {
    margin-bottom: 10px;
}

.recommendation-block span {
    display: block;
    margin-bottom: 8px;
    color: var(--navy);
    font-size: 14px;
    font-weight: 600;
}

.recommendation-block p {
    margin: 0;
    color: var(--text-secondary);
}

.floating-bar {
    margin-top: 28px;
    padding: 16px;
    border-radius: 18px;
    position: sticky;
    bottom: 18px;
    display: flex;
    justify-content: space-between;
    gap: 12px;
    background: rgba(255, 255, 255, 0.88);
    border: 1px solid rgba(10, 22, 40, 0.06);
    backdrop-filter: blur(18px);
    box-shadow: var(--shadow-lg);
}

.history-toolbar {
    width: 100%;
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.history-toolbar .search-input {
    flex: 1 1 320px;
}

.history-group {
    width: 100%;
    padding-top: 28px;
}

.history-group h2 {
    margin: 0 0 16px;
    color: var(--navy);
    font-size: 24px;
}

.history-card__date {
    display: block;
    color: var(--text-secondary);
    font-size: 14px;
    margin-bottom: 12px;
}

.history-card__score {
    margin: 14px 0 10px;
}

.progress-bar--compact {
    margin-bottom: 14px;
}

.history-card__actions {
    margin-top: 18px;
}

.technical-shell {
    display: grid;
    gap: 24px;
}

.technical-tabs {
    width: 100%;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 12px;
}

.technical-tab {
    min-height: 44px;
    padding: 0 18px;
    border-radius: 999px;
    border: 1px solid var(--border-light);
    background: rgba(255, 255, 255, 0.9);
    color: var(--text-secondary);
    box-shadow: var(--shadow-sm);
    white-space: normal;
}

.technical-tab.is-active {
    color: var(--clinical-blue);
    border-color: rgba(44, 92, 245, 0.22);
    background: rgba(239, 244, 255, 0.95);
}

.technical-content {
    width: 100%;
}

.technical-card {
    display: grid;
    gap: 24px;
}

.section-copy--wide h2,
.section-copy--wide p {
    max-width: none;
}

.architecture-flow {
    padding: 24px;
    border-radius: 18px;
    background: linear-gradient(180deg, rgba(239, 244, 255, 0.9), rgba(255, 255, 255, 0.95));
    border: 1px solid rgba(44, 92, 245, 0.1);
    display: grid;
    gap: 12px;
    justify-items: center;
    text-align: center;
    color: var(--navy);
    font-weight: 600;
}

.architecture-flow__split,
.technical-columns,
.developer-grid,
.media-grid,
.footer-grid {
    display: grid;
    gap: 20px;
}

.architecture-flow__split {
    width: 100%;
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.architecture-flow__split div,
.metric-table div,
.code-card,
.media-card {
    padding: 18px;
    border-radius: 16px;
    background: var(--white);
    border: 1px solid var(--border-light);
}

.architecture-flow__split small {
    color: var(--text-secondary);
    font-size: 13px;
}

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

.technical-list {
    margin: 0;
    padding-left: 18px;
    color: var(--text-secondary);
    display: grid;
    gap: 10px;
}

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

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

.media-card img {
    width: 100%;
    border-radius: 12px;
}

.media-card figcaption {
    margin-top: 12px;
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
}

.metric-table {
    display: grid;
    gap: 12px;
}

.metric-table div {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr 0.8fr;
    align-items: center;
    gap: 12px;
}

.metric-table strong {
    color: var(--navy);
}

.stats-grid--four {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

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

.code-card__header {
    margin-bottom: 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
}

.code-card pre {
    margin: 0;
    padding: 18px;
    border-radius: 14px;
    background: #0f172a;
    color: #e2e8f0;
    overflow: auto;
    font-size: 13px;
    line-height: 1.7;
}

.footer {
    max-width: var(--page-width);
    margin: 48px auto 0;
    padding: 32px 0 12px;
    color: var(--text-secondary);
    font-size: 14px;
}

.footer-grid {
    grid-template-columns: 1.4fr repeat(3, minmax(0, 1fr));
    align-items: start;
}

.footer-brand {
    display: grid;
    gap: 14px;
    align-content: start;
}

.footer-brand__logo {
    width: clamp(180px, 24vw, 240px);
    max-width: 100%;
    height: auto;
    display: block;
}

.footer-grid strong {
    color: var(--navy);
    font-size: 16px;
}

.footer-grid p {
    margin: 10px 0 0;
    max-width: 30ch;
    line-height: 1.7;
}

.footer-heading {
    display: block;
    margin-bottom: 10px;
    color: var(--navy);
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.footer-link {
    display: block;
    margin-top: 8px;
    color: var(--text-secondary);
}

.footer-copy {
    display: block;
    margin-top: 8px;
}

.footer-strip {
    margin-top: 20px;
    padding: 14px 18px;
    border-top: 1px solid rgba(10, 22, 40, 0.06);
    color: var(--text-muted);
    font-size: 12px;
    letter-spacing: 0.06em;
    text-transform: uppercase;
}

#footerHelpButton,
#footerSettingsButton {
    padding: 0;
    border: 0;
    background: transparent;
    text-align: left;
    cursor: pointer;
    font: inherit;
}

.modal-backdrop {
    position: fixed;
    inset: 0;
    z-index: 80;
    background: rgba(10, 22, 40, 0.28);
    display: grid;
    place-items: center;
    padding: 24px;
}

.modal {
    width: min(100%, 420px);
    max-height: min(80vh, 720px);
    overflow: auto;
    border-radius: 18px;
    background: var(--white);
    box-shadow: var(--shadow-xl);
}

.modal--settings {
    width: min(100%, 400px);
}

.modal__header,
.modal__footer {
    padding: 18px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    border-bottom: 1px solid var(--border-light);
}

.modal__footer {
    border-top: 1px solid var(--border-light);
    border-bottom: 0;
    justify-content: flex-end;
}

.modal__body {
    padding: 20px;
    display: grid;
    gap: 18px;
}

.settings-group {
    display: grid;
    gap: 10px;
}

.settings-group h3 {
    margin: 0;
    color: var(--navy);
    font-size: 16px;
}

.icon-close {
    width: 36px;
    height: 36px;
    border-radius: 999px;
    background: var(--soft-gray);
    font-size: 24px;
    line-height: 1;
}

.notes-input {
    min-height: 120px;
    resize: vertical;
    padding: 14px;
    border-radius: 12px;
    border: 1px solid var(--border-medium);
    background: var(--white);
    color: var(--navy);
    font: inherit;
}

@keyframes routeFade {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

@keyframes pageRise {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes analysisPulse {
    0%,
    100% {
        transform: scale(1);
        opacity: 0.88;
    }

    50% {
        transform: scale(1.15);
        opacity: 1;
    }
}

@keyframes pulseHint {
    0%,
    100% {
        transform: scale(1);
        opacity: 0.48;
    }

    50% {
        transform: scale(1.2);
        opacity: 0.9;
    }
}

@keyframes pulseButton {
    0%,
    100% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.02);
    }
}

@media (max-width: 1100px) {
    .hero,
    .upload-layout,
    .results-grid,
    .steps-grid,
    .stats-grid,
    .feature-grid,
    .page-header--results,
    .technical-columns,
    .developer-grid,
    .media-grid,
    .footer-grid,
    .stats-grid--four {
        grid-template-columns: 1fr;
        display: grid;
    }

    .page-header--results {
        align-items: start;
    }

    .page-header__actions {
        width: 100%;
    }

    .results-main {
        position: static;
    }

    .risk-banner,
    .risk-banner__identity,
    .risk-banner__metrics,
    .floating-bar,
    .cta-panel {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 900px) {
    .topbar__inner {
        gap: 16px;
        padding: 12px 16px;
    }

    .hero {
        gap: 32px;
    }

    .hero__visual {
        min-height: 420px;
    }

    .section-block {
        padding-top: 72px;
    }

    .cta-panel,
    .upload-focus,
    .step-card,
    .stat-card,
    .feature-card,
    .card,
    .history-card,
    .sample-card {
        padding: 24px;
    }

    .page-header {
        padding: 40px 0 16px;
    }

    .page-header--results,
    .risk-banner,
    .panel-header,
    .nodule-card__top,
    .history-card__row,
    .metric-block__row,
    .history-card__actions,
    .modal__footer {
        flex-direction: column;
        align-items: flex-start;
    }

    .risk-banner__metrics {
        width: 100%;
        margin-left: 0;
        display: grid;
        grid-template-columns: repeat(3, minmax(0, 1fr));
        gap: 12px;
    }

    .floating-bar {
        flex-wrap: wrap;
        justify-content: flex-start;
    }

    .scan-stage {
        min-height: 340px;
    }

    .metric-table div {
        grid-template-columns: 1fr;
        justify-items: start;
    }

    .code-card__header {
        flex-direction: column;
        align-items: flex-start;
    }
}

@media (max-width: 767px) {
    .app-shell {
        padding: 0 16px 32px;
    }

    .topbar {
        padding: 12px 0;
    }

    .topbar__inner {
        padding: 10px 14px;
        gap: 12px;
    }

    .nav,
    .topbar__actions .icon-button:not(.mobile-nav-toggle) {
        display: none;
    }

    .mobile-nav-toggle {
        display: inline-flex;
    }

    .mobile-nav.is-open {
        display: flex;
    }

    .mobile-nav a {
        padding: 10px 4px;
    }

    .brand__wordmark {
        height: 44px;
    }

    .hero {
        min-height: auto;
        padding: 36px 0 12px;
        grid-template-columns: 1fr;
    }

    .hero__visual {
        min-height: 320px;
    }

    .hero__visual-card {
        padding: 20px;
        border-radius: 22px;
    }

    .hero__symbol {
        width: 88px;
        right: 4px;
        bottom: 12px;
    }

    .hero h1,
    .page-header h1 {
        font-size: clamp(2.4rem, 12vw, 3.4rem);
    }

    .hero__subtitle {
        font-size: 20px;
    }

    .hero__actions,
    .page-header__actions,
    .selected-file__actions,
    .history-card__actions {
        flex-direction: column;
        align-items: stretch;
    }

    .section-block {
        padding-top: 56px;
    }

    .step-card,
    .stat-card,
    .feature-card,
    .card,
    .history-card,
    .sample-card,
    .cta-panel,
    .upload-focus,
    .modal__header,
    .modal__body,
    .modal__footer {
        padding-left: 18px;
        padding-right: 18px;
    }

    .cta-panel {
        margin-top: 56px;
    }

    .button,
    .button--hero,
    .button--ghost,
    .button--secondary,
    .button--primary {
        width: 100%;
    }

    .button--hero {
        padding: 0 24px;
    }

    .file-facts,
    .timing-grid,
    .scan-detail-grid,
    .architecture-flow__split {
        grid-template-columns: 1fr;
    }

    .upload-zone {
        min-height: 280px;
        padding: 28px 20px;
    }

    .upload-zone h2 {
        font-size: 28px;
    }

    .sample-card {
        flex-direction: column;
        align-items: flex-start;
    }

    .analysis-view {
        min-height: calc(100vh - 140px);
    }

    .analysis-view h1 {
        font-size: 28px;
    }

    .risk-banner {
        padding: 20px;
    }

    .risk-banner__identity {
        align-items: flex-start;
    }

    .risk-banner__identity h2 {
        font-size: 24px;
    }

    .risk-banner__metrics {
        grid-template-columns: 1fr;
    }

    .scan-stage {
        min-height: 260px;
    }

    .scan-placeholder {
        padding: 24px 18px;
    }

    .technical-tabs {
        display: grid;
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .technical-tab {
        width: 100%;
        white-space: normal;
    }

    .metric-table div,
    .footer-grid,
    .developer-grid,
    .media-grid,
    .media-grid--two {
        grid-template-columns: 1fr;
    }

    .modal-backdrop {
        padding: 16px;
        align-items: end;
    }

    .modal {
        width: 100%;
        max-height: min(88vh, 760px);
    }

    .modal__footer {
        align-items: stretch;
    }

    .floating-bar {
        position: static;
        padding: 14px;
    }

    .history-toolbar {
        flex-direction: column;
    }

    .footer {
        margin-top: 40px;
    }
}

@media (max-width: 520px) {
    .technical-tabs {
        grid-template-columns: 1fr;
    }

    .step-badge {
        width: 64px;
        height: 64px;
        margin-bottom: 20px;
        font-size: 24px;
    }

    .step-card h3,
    .feature-card h3 {
        font-size: 20px;
    }

    .footer-strip {
        padding-left: 0;
        padding-right: 0;
        line-height: 1.5;
    }
}

body.theme-dark {
    background: #010101;
    color: #f4f4f5;
}

body.theme-dark .topbar__inner {
    background: rgba(0, 0, 0, 0.9);
    border-color: rgba(255, 255, 255, 0.08);
    box-shadow: 0 30px 60px rgba(0, 0, 0, 0.85);
}

body.theme-dark .nav a {
    color: rgba(255, 255, 255, 0.8);
}

body.theme-dark .nav a.is-active,
body.theme-dark .nav a:hover {
    color: #fff;
}

body.theme-dark h1,
body.theme-dark h2,
body.theme-dark h3,
body.theme-dark h4,
body.theme-dark h5,
body.theme-dark h6,
body.theme-dark p,
body.theme-dark span,
body.theme-dark strong,
body.theme-dark small {
    color: rgba(255, 255, 255, 0.95);
}

body.theme-dark .page-header h1,
body.theme-dark .page-header h2,
body.theme-dark .history-toolbar span,
body.theme-dark .hero__subtitle,
body.theme-dark .lead-text,
body.theme-dark .cta-panel h2,
body.theme-dark .page-header__actions button {
    color: #fff;
}

body.theme-dark .hero h1,
body.theme-dark .hero__subtitle,
body.theme-dark .hero__lede,
body.theme-dark .section-copy h2,
body.theme-dark .section-copy p,
body.theme-dark .panel-header h2,
body.theme-dark .panel-header p,
body.theme-dark .summary-text,
body.theme-dark .feature-card h3,
body.theme-dark .stat-card strong,
body.theme-dark .history-card h3,
body.theme-dark .history-card__file,
body.theme-dark .history-card__date,
body.theme-dark .history-card__score,
body.theme-dark .risk-banner__label,
body.theme-dark .legend span,
body.theme-dark .results-meta,
body.theme-dark .analysis-detail,
body.theme-dark .breadcrumb {
    color: rgba(255, 255, 255, 0.8);
}

body.theme-dark .card,
body.theme-dark .modal,
body.theme-dark .upload-zone,
body.theme-dark .hero__visual-card,
body.theme-dark .results-main,
body.theme-dark .results-sidebar .card,
body.theme-dark .history-card,
body.theme-dark .stat-card,
body.theme-dark .feature-card,
body.theme-dark .step-card,
body.theme-dark .cta-panel,
body.theme-dark .sample-card,
body.theme-dark .panel-header,
body.theme-dark .technical-card,
body.theme-dark .media-card,
body.theme-dark .code-card,
body.theme-dark .floating-bar,
body.theme-dark .upload-focus,
body.theme-dark .technical-columns,
body.theme-dark .metric-table div,
body.theme-dark .selected-file-panel,
body.theme-dark .file-facts div,
body.theme-dark .timing-grid div,
body.theme-dark .scan-detail-grid div,
body.theme-dark .nodule-card,
body.theme-dark .recent-upload-item,
body.theme-dark .empty-state {
    background: rgba(0, 0, 0, 0.85);
    border-color: rgba(255, 255, 255, 0.08);
    box-shadow: 0 25px 45px rgba(0, 0, 0, 0.9);
}

body.theme-dark .results-main,
body.theme-dark .results-sidebar .card {
    border: 1px solid rgba(255, 255, 255, 0.06);
}

body.theme-dark .modal-backdrop {
    background: rgba(0, 0, 0, 0.78);
}

body.theme-dark .upload-zone__icon,
body.theme-dark .status-banner {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: #fff;
}

body.theme-dark .risk-banner {
    border-left-width: 1px;
}

body.theme-dark .risk-banner--low {
    background: rgba(16, 185, 129, 0.12);
    border-left-color: var(--success);
}

body.theme-dark .risk-banner--medium {
    background: rgba(245, 158, 11, 0.12);
    border-left-color: var(--warning);
}

body.theme-dark .risk-banner--high {
    background: rgba(239, 68, 68, 0.12);
    border-left-color: var(--alert);
}

body.theme-dark .analysis-view h1 {
    color: #fff;
}

body.theme-dark .analysis-steps span {
    background: rgba(255, 255, 255, 0.08);
    color: #f4f4f5;
    border: 1px solid rgba(255, 255, 255, 0.12);
}

body.theme-dark input,
body.theme-dark textarea,
body.theme-dark select,
body.theme-dark .search-input,
body.theme-dark .filter-select {
    background: rgba(0, 0, 0, 0.92);
    border-color: rgba(255, 255, 255, 0.2);
    color: #f4f4f5;
}

body.theme-dark ::placeholder {
    color: rgba(255, 255, 255, 0.45);
}

body.theme-dark .scroll-hint span {
    background: rgba(255, 255, 255, 0.5);
}

body.theme-dark .upload-divider span {
    color: rgba(255, 255, 255, 0.45);
}

body.theme-dark .icon-button {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.12);
    color: #fff;
}

body.theme-dark .icon-button:hover {
    background: rgba(255, 255, 255, 0.12);
    border-color: rgba(255, 255, 255, 0.2);
}

body.theme-dark .footer,
body.theme-dark .footer-grid,
body.theme-dark .footer-strip {
    color: rgba(255, 255, 255, 0.7);
}

body.theme-dark .footer-link,
body.theme-dark .footer-heading {
    color: #fff;
}

body.theme-dark .technical-tabs {
    background: rgba(0, 0, 0, 0.95);
    border: 1px solid rgba(255, 255, 255, 0.08);
    padding: 14px;
    border-radius: 16px;
}

body.theme-dark .technical-tab {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.12);
    color: #fff;
    box-shadow: none;
}

body.theme-dark .technical-tab.is-active {
    background: rgba(255, 255, 255, 0.18);
    border-color: rgba(255, 255, 255, 0.2);
    color: #fff;
}