/* Lens Preview: user guide, local photo fitting, comparison and manual alignment. */
html.preview-splash-open { overflow: hidden; }
.preview-splash { position: fixed; inset: 0; box-sizing: border-box; width: 100%; max-width: none; height: 100vh; height: 100dvh; max-height: none; margin: 0; padding: 72px 24px 24px; border: 0; background: radial-gradient(ellipse at center, var(--color-surface) 25%, var(--color-surface-brand) 100%); color: var(--color-text-primary); overflow: hidden; font-family: var(--font-inter); }
.preview-splash::backdrop { background: var(--color-surface); }
.preview-splash[open] { display: grid; place-items: center; }
.preview-splash__close { position: fixed; top: max(20px, env(safe-area-inset-top)); right: max(24px, env(safe-area-inset-right)); z-index: 1; }
.preview-splash__close .ui-icon { --icon-size: 28px; }
.preview-splash__content { display: grid; grid-template-rows: auto minmax(0, 1fr) auto; gap: 24px; width: min(100%, 960px); height: min(700px, 100%); max-height: 100%; min-width: 0; min-height: 0; text-align: center; }
.preview-splash__content .ui-eyebrow { margin: 0 0 12px; }
.preview-splash__content h2 { margin: 0; font: 600 clamp(25px, 4vw, 36px)/1.3 var(--font-manrope); letter-spacing: -.035em; }
.preview-splash__panels { min-width: 0; min-height: 0; overflow: auto; overscroll-behavior: contain; padding: 8px 4px; }
.preview-splash__panel { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1.1fr); align-items: center; gap: 40px; min-width: 0; text-align: left; animation: preview-guide-reveal 420ms cubic-bezier(.22, 1, .36, 1) both; }
.preview-splash__visual { box-sizing: border-box; display: grid; grid-template-rows: minmax(0, 1fr); width: 100%; height: 350px; min-width: 0; min-height: 0; padding: 20px; overflow: hidden; border-radius: 28px; background: var(--color-surface-brand); }
.preview-splash__mockup { display: grid; grid-template-rows: 44px minmax(0, 1fr); width: 100%; height: 100%; min-width: 0; min-height: 0; overflow: hidden; border: 1px solid var(--color-border); border-radius: 16px; background: var(--color-surface); box-shadow: 0 8px 20px rgb(50 30 35 / 6%); }
.preview-splash__mockup-bar { display: flex; align-items: center; gap: 10px; min-width: 0; padding: 0 12px; border-bottom: 1px solid var(--color-border); }
.preview-splash__mockup-icon { display: grid; place-items: center; flex-shrink: 0; color: var(--color-primary); }
.preview-splash__mockup-icon .ui-icon { --icon-size: 17px; }
.preview-splash__mockup-title { flex: 1; min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font: 700 12px/1.5 var(--font-manrope); }
.preview-splash__mockup-number { padding: 2px 7px; border-radius: 99px; color: var(--color-primary); background: var(--color-surface-brand); font: 700 10px/1.5 var(--font-manrope); }
.preview-splash__screen-frame { display: grid; min-width: 0; min-height: 0; padding: 12px; overflow: hidden; }
.preview-splash__screen { display: block; width: 100%; height: 100%; max-width: 100%; max-height: 100%; min-width: 0; min-height: 0; object-fit: contain; }
.preview-splash__step { margin: 0 0 12px; color: var(--color-primary); font: 700 14px/1.4 var(--font-manrope); letter-spacing: .08em; }
.preview-splash__copy h3 { margin: 0; font: 700 clamp(24px, 3vw, 32px)/1.3 var(--font-manrope); letter-spacing: -.03em; }
.preview-splash__copy > p:not(.preview-splash__step) { margin: 18px 0 0; color: var(--color-text-secondary); font-size: 15px; line-height: 1.8; }
.preview-splash__panel .preview-splash__copy > .preview-splash__tip { display: flex; align-items: flex-start; gap: 10px; font-size: 12px; }
.preview-splash__tip .ui-icon { flex-shrink: 0; margin-top: 3px; color: var(--color-primary); --icon-size: 18px; }
.preview-splash__footer { padding-top: 12px; border-top: 1px solid var(--color-border); }
.preview-splash__navigation { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 12px; }
.preview-splash__dismiss { margin-top: 8px; gap: 8px; }
.preview-splash__dismiss .ui-icon { --icon-size: 16px; }
.preview-splash__storage-error { margin: 0 auto; max-width: 50ch; }
.preview-splash__navigation > .ui-button { min-width: 0; padding-inline: 0; white-space: nowrap; }
.preview-splash__navigation > :first-child { justify-self: start; }
.preview-splash__navigation > :last-child { justify-self: end; }
.preview-splash__navigation [aria-disabled=true] { color: var(--color-text-muted); cursor: default; }
.preview-splash__indicators { display: flex; align-items: center; }
.preview-splash__dot { display: grid; place-items: center; width: 44px; height: 44px; padding: 0; border: 0; background: transparent; cursor: pointer; }
.preview-splash__dot span { width: 7px; height: 7px; border-radius: 99px; background: var(--color-primary); opacity: .35; transition: width 300ms ease, opacity 300ms ease; }
.preview-splash__dot[aria-current=step] span { width: 32px; opacity: 1; }
.preview-splash__dot:is(:hover, :focus-visible) span { opacity: 1; }
.preview-splash__dot:focus-visible { outline: 2px solid var(--color-focus); outline-offset: -3px; border-radius: var(--radius-control); }
.preview-heading { position: relative; }
@keyframes preview-guide-reveal { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: translateY(0); } }
.site-main:has(> .lens-preview-page) { max-width: none; padding-inline: 0; }
.site-surface:has(> .site-main > .lens-preview-page) { padding-top: 0; }
.lens-preview-page { font-family: var(--font-inter); }
html:has(.lens-preview-page) { scroll-behavior: smooth; }
.preview-hero__start { min-width: 180px; }
.preview-container { width: 100%; max-width: calc(1440px + 2 * var(--page-gutter)); margin-inline: auto; padding-inline: var(--page-gutter); }
.preview-hero { position: relative; overflow: hidden; display: grid; align-items: center; min-height: clamp(440px, 43vw, 780px); background: #fcf9f6; }
.preview-hero__image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: right center; }
.preview-hero__inner { position: relative; padding-block: calc(var(--site-header-height) + 56px) 64px; }
.preview-hero__copy { width: 45%; }
.preview-hero .ui-eyebrow { margin: 0 0 16px; }
.preview-hero h1 { margin: 0; font: 600 clamp(34px, 3.7vw, 60px)/1.15 var(--font-manrope); letter-spacing: -.04em; }
.preview-hero__title-line { display: block; }
.preview-hero__title-slanted { display: inline-block; font-style: normal; transform: skewX(-10deg); transform-origin: left bottom; }
.preview-hero__copy > p:not(.ui-eyebrow) { margin: 22px 0 28px; color: var(--color-text-secondary); line-height: 1.8; }
.preview-workspace { position: relative; isolation: isolate; padding-block: 56px 80px; scroll-margin-top: calc(var(--site-header-height) + 20px); }
.preview-workspace::before { content: ''; position: absolute; z-index: -1; inset-block: 0; inset-inline: max(12px, calc((100% - 1440px) / 2 - 24px)); background: var(--color-surface); }
.preview-heading h2 { margin: 0 0 12px; font: 600 clamp(26px, 2.5vw, 38px)/1.3 var(--font-manrope); letter-spacing: -.035em; }
.preview-heading p { margin: 0; color: var(--color-text-secondary); font-size: 14px; }
.preview-layout { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(300px, 1fr); gap: 32px; align-items: stretch; }
.preview-photo-panel, .preview-lenses { display: flex; flex-direction: column; min-width: 0; padding: 24px; background: var(--color-surface-brand); border-radius: var(--radius-panel); }
.preview-photo-panel > .preview-stage { flex: 1; }
.preview-lenses h3 { margin: 0; font: 700 21px/1.4 var(--font-manrope); }
.preview-stage { position: relative; display: grid; place-items: center; width: 100%; min-width: 0; min-height: 420px; aspect-ratio: 4 / 3; overflow: hidden; border: 1px dashed var(--color-border-input); border-radius: var(--radius-panel); background: var(--color-surface); }
.preview-stage.is-dragging { border: 2px solid var(--color-primary); background: var(--color-surface-selected); }
.preview-stage[data-invalid=true] { border-color: var(--color-border-error); }
.preview-stage.is-aligning { cursor: crosshair; touch-action: manipulation; }
.preview-stage__loading { position: absolute; inset: 0; z-index: 1; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 16px; background: rgb(255 255 255 / 78%); color: var(--color-text-secondary); font-size: 14px; }
.preview-spinner { width: 40px; height: 40px; border: 3px solid var(--color-border); border-top-color: var(--color-primary); border-radius: 50%; animation: preview-spin 800ms linear infinite; }
.preview-tools { display: flex; align-items: center; flex-wrap: wrap; gap: 12px; width: fit-content; max-width: 100%; padding: 6px; margin-bottom: 16px; border-radius: 999px; background: var(--color-surface-brand); }
.preview-tools__actions, .preview-compare { display: flex; align-items: center; gap: 4px; }
.preview-compare { padding-left: 12px; border-left: 1px solid var(--color-border); }
.preview-tools .ui-icon-button, .preview-selection .ui-icon-button { border-radius: 50%; background: var(--color-surface); transition: color var(--transition-ui), background-color var(--transition-ui); }
.preview-tools .ui-icon-button:is(:hover, :focus-visible, [aria-pressed=true]):not(:disabled), .preview-selection .ui-icon-button:is(:hover, :focus-visible):not(:disabled) { background: var(--color-primary); color: var(--color-text-inverse); }
.preview-intensity { display: flex; align-items: center; gap: 16px; margin-top: 16px; color: var(--color-text-secondary); font-size: 13px; }
.preview-intensity input { flex: 1; min-width: 0; accent-color: var(--color-primary); }
.preview-intensity output { min-width: 4ch; text-align: right; font-variant-numeric: tabular-nums; }
.preview-manual { padding: 12px 16px; border-radius: var(--radius-control); background: var(--color-surface-brand); }
.preview-manual p { margin: 0; font-size: 13px; line-height: 1.6; }
.preview-manual label { display: flex; align-items: center; gap: 16px; margin-top: 12px; font-size: 13px; }
.preview-manual input { flex: 1; min-width: 0; accent-color: var(--color-primary); }
.preview-lens-option:has(input:disabled) { opacity: .5; cursor: not-allowed; }
@keyframes preview-spin { to { transform: rotate(360deg); } }
.preview-stage__empty { display: grid; justify-items: center; gap: 16px; padding: 32px; text-align: center; }
.preview-stage__portrait { display: grid; place-items: center; width: 100px; height: 116px; border: 1px solid var(--color-border-selected); border-radius: 50%; color: var(--color-primary); }
.preview-stage__portrait .ui-icon { --icon-size: 56px; }
.preview-stage__empty h4 { margin: 4px 0 0; font: 700 22px/1.4 var(--font-manrope); }
.preview-stage__empty p { max-width: 28ch; margin: 0; color: var(--color-text-secondary); font-size: 14px; line-height: 1.8; }
.preview-stage__empty small { color: var(--color-text-muted); font-size: 12px; }
.preview-stage__photo { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: contain; }
.preview-stage__badge { position: absolute; top: 16px; left: 16px; padding: 6px 12px; border-radius: 999px; background: var(--color-surface); color: var(--color-text-secondary); font-size: 12px; }
.preview-brands { display: flex; flex-wrap: wrap; gap: 12px 20px; margin: 20px 0; }
.preview-brands button { min-height: 44px; padding: 0; border: 0; font-size: 13px; }
.preview-lens-options { display: grid; align-content: start; flex: 1 1 0; gap: 8px; min-width: 0; min-height: 360px; overflow-y: auto; overscroll-behavior: contain; margin: 0; padding: 0 4px 0 0; border: 0; }
.preview-lens-option { position: relative; display: flex; align-items: center; gap: 12px; padding: 12px; border: 1px solid transparent; border-radius: var(--radius-control); background: var(--color-surface); cursor: pointer; }
.preview-lens-option:has(input:checked) { border-color: var(--color-primary); }
.preview-lens-option__image { display: grid; place-items: center; flex: 0 0 48px; width: 48px; height: 48px; overflow: hidden; border-radius: 50%; color: var(--color-primary); }
.preview-lens-option__image img { display: block; width: 100%; height: 100%; object-fit: cover; }
.preview-lens-option__copy { display: grid; gap: 4px; min-width: 0; }
.preview-lens-option__copy strong { font: 700 13px/1.5 var(--font-manrope); }
.preview-lens-option__copy small { color: var(--color-text-secondary); font-size: 11px; }
.preview-selection { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; column-gap: 12px; padding-block: 20px; }
.preview-selection > p { grid-column: 1 / -1; margin: 0 0 6px; color: var(--color-text-secondary); font-size: 12px; }
.preview-selection > strong { display: block; min-width: 0; overflow-wrap: anywhere; font: 600 20px/1.4 var(--font-manrope); }
.preview-selection .ui-icon-button { justify-self: end; }
.preview-fit-button { width: 100%; }
.preview-notice { margin: 16px 0 0; color: var(--color-text-secondary); font-size: 12px; line-height: 1.8; }
.preview-visually-hidden { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); white-space: nowrap; }
.lens-preview-page [hidden] { display: none; }
@media (width < 1200px) {
    .preview-workspace::before { inset-inline: 0; }
    .preview-layout { grid-template-columns: minmax(0, 1.3fr) minmax(280px, 1fr); gap: 24px; }
    .preview-stage { min-height: 400px; }
    .preview-photo-panel, .preview-lenses { padding: 20px; }
}
@media (width < 768px) {
    .preview-splash { padding: max(72px, calc(env(safe-area-inset-top) + 52px)) 24px max(24px, env(safe-area-inset-bottom)); }
    .preview-splash__content { height: 100%; gap: 16px; }
    .preview-splash__panel { grid-template-columns: minmax(0, 1fr); gap: 20px; }
    .preview-splash__visual { height: 220px; max-width: 360px; margin-inline: auto; padding: 12px; border-radius: 22px; }
    .preview-splash__mockup { grid-template-rows: 38px minmax(0, 1fr); border-radius: 12px; }
    .preview-splash__screen-frame { padding: 8px; }
    .preview-splash__copy h3 { font-size: 25px; }
    .preview-splash__copy > p:not(.preview-splash__step) { margin-top: 12px; font-size: 14px; }
    .preview-splash__navigation { gap: 8px; }
    .preview-splash__navigation > .ui-button { gap: 5px; font-size: 12px; }
    .preview-splash__dot { width: 32px; }
    .preview-splash__dot[aria-current=step] span { width: 25px; }
    .preview-hero { min-height: 520px; }
    .preview-hero__image { top: auto; height: auto; aspect-ratio: 1916 / 821; object-fit: contain; object-position: right bottom; }
    .preview-hero__inner { padding-block: calc(var(--site-header-height) + 32px) 220px; }
    .preview-hero__copy { width: 100%; }
    .preview-hero h1 { font-size: clamp(28px, 8.2vw, 42px); }
    .preview-hero__copy > p:not(.ui-eyebrow) { margin: 16px 0 20px; font-size: 14px; }
    .preview-hero .ui-button { font-size: 13px; }
    .preview-workspace { padding-block: 32px 48px; }
    .preview-layout { grid-template-columns: minmax(0, 1fr); }
    .preview-stage { min-height: 380px; aspect-ratio: 4 / 5; }
    .preview-stage__empty { padding: 24px 16px; }
    .preview-stage__empty h4 { font-size: 20px; }
    .preview-lenses h3 { font-size: 19px; }
    .preview-lens-options { flex: none; min-height: 0; max-height: 300px; }
}
@media (prefers-reduced-motion: reduce) {
    .preview-tools .ui-icon-button, .preview-selection .ui-icon-button { transition: none; }
    html:has(.lens-preview-page) { scroll-behavior: auto; }
    .preview-splash__panel { animation: none; }
    .preview-spinner { animation-duration: 1600ms; }
    .preview-splash__dot span { transition: none; }
}
@media (max-height: 600px) {
    .preview-splash { align-items: start; }
}