:root {
    --color-primary: #0F766E;
    --color-primary-dark: #115E59;
    --color-primary-light: #CCFBF1;

    --color-bg: #F8FAFC;
    --color-surface: #FFFFFF;
    --color-border: #E2E8F0;

    --color-text: #0F172A;
    --color-muted: #64748B;
    --color-soft: #F1F5F9;

    --color-success: #15803D;
    --color-warning: #B45309;
    --color-error: #B91C1C;
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.5;
}

.page {
    max-width: 880px;
    margin: 0 auto;
    padding: 48px 20px;
}

.hero {
    margin-bottom: 32px;
}

.eyebrow {
    color: var(--color-primary);
    font-weight: 700;
    margin-bottom: 8px;
}

h1 {
    font-size: 40px;
    line-height: 1.1;
    margin: 0 0 16px;
}

h2 {
    font-size: 24px;
    margin: 0 0 16px;
}

h3 {
    font-size: 18px;
    margin: 24px 0 12px;
}

p {
    margin: 0 0 12px;
}

.muted {
    color: var(--color-muted);
}

.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(15, 23, 42, 0.06);
    padding: 24px;
    margin-bottom: 24px;
}

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

label {
    display: block;
    font-weight: 600;
    margin-bottom: 6px;
}

input[type="text"] {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    font-size: 16px;
}

button {
    background: var(--color-primary);
    color: #FFFFFF;
    border: 0;
    border-radius: 10px;
    padding: 12px 18px;
    font-size: 16px;
    font-weight: 700;
    cursor: pointer;
}

button:hover {
    background: var(--color-primary-dark);
}

.result-list {
    padding-left: 20px;
}

.success {
    color: var(--color-success);
    font-weight: 700;
}

.warning {
    color: var(--color-warning);
    font-weight: 700;
}

.error {
    color: var(--color-error);
    font-weight: 700;
}

.choice {
    border-top: 1px solid var(--color-border);
    padding-top: 18px;
    margin-top: 18px;
}

.choice:first-of-type {
    border-top: 0;
    padding-top: 0;
    margin-top: 0;
}

details {
    background: var(--color-soft);
    border-radius: 12px;
    padding: 14px 16px;
    margin-top: 16px;
}

summary {
    cursor: pointer;
    font-weight: 700;
}

@media (max-width: 640px) {
    .page {
        padding: 32px 14px;
    }

    h1 {
        font-size: 32px;
    }

    .card {
        padding: 20px;
    }
}

.warning-box {
    margin: 16px 0 24px;
    padding: 16px 18px;

    background: #F8FAFC;
    border: 1px solid #CBD5E1;
    border-left: 4px solid #94A3B8;

    border-radius: 10px;

    color: #334155;
}

.warning-box strong {
    font-weight: 700;
}

.warning-box-title {
    display: block;
    margin-bottom: 8px;
}

.warning-box-row {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
    align-items: baseline;
}

.footer {
    margin-top: 48px;
    text-align: center;
    color: var(--color-muted);
    font-size: 14px;
    line-height: 1.5;
}

.footer p {
    margin: 4px 0;
}

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

.footer a:hover {
    text-decoration: underline;
}

.score-section {
    margin-bottom: 24px;
}

.score-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 16px;
    margin-top: 20px;
}

.score-tile {
    border: 1px solid var(--color-border);
    border-radius: 14px;
    background: var(--color-soft);
    padding: 18px;
}

.score-label {
    display: block;
    color: var(--color-muted);
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 8px;
}

.score-tile strong {
    display: block;
    color: var(--color-primary);
    font-size: 34px;
    line-height: 1;
    margin-bottom: 10px;
}

.score-tile span:last-child {
    color: var(--color-muted);
}

.source-slider {
    position: relative;
    overflow: hidden;
    min-height: 0;
    margin-top: 24px;

    border: 1px solid var(--color-border);
    border-radius: 16px;
    background: var(--color-surface);

    transition: height 220ms ease;
}

.source-panel {
    background: var(--color-surface);
}

.source-panel-osm {
    position: relative;
    padding-right: 92px;
    z-index: 1;
}

.source-panel-google,
.source-panel-other {
    position: absolute;
    inset: 0;
    z-index: 2;

    display: grid;

    transform: translateX(100%);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;

    transition:
        transform 260ms ease,
        opacity 120ms ease,
        visibility 0s linear 260ms;

    background: var(--color-surface);
    box-shadow: -18px 0 35px rgba(15, 23, 42, 0.10);
}

.source-slider.is-google-active .source-panel-google {
    z-index: 4;
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;

    transition:
        transform 260ms ease,
        opacity 120ms ease;
}

.source-slider.is-other-active .source-panel-other {
    z-index: 4;
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
    pointer-events: auto;

    transition:
        transform 260ms ease,
        opacity 120ms ease;
}

.source-slider.is-google-active .source-panel-google {
    transform: translateX(0);
}

.source-slider.is-other-active .source-panel-other {
    transform: translateX(0);
}

.source-panel-content {
    padding: 24px;
}

.source-panel-content-osm {
    padding-right: 28px;
}

.source-panel-content-google,
.source-panel-content-other {
    overflow: visible;
}

.source-strip {
    all: unset;
    box-sizing: border-box;

    width: 46px;
    min-height: 100%;

    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;

    writing-mode: vertical-rl;
    text-orientation: mixed;

    cursor: pointer;
    user-select: none;

    background: #F0FDFA;
    color: var(--color-primary-dark);

    border-left: 1px solid var(--color-border);
    border-right: 1px solid var(--color-border);

    font-size: 13px;
    font-weight: 800;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.source-strip:hover {
    background: var(--color-primary-light);
}

.source-strip-stack {
    position: absolute;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: 2;

    display: grid;
    grid-template-columns: 46px 46px;
}

.source-slider.is-google-active .source-strip-stack,
.source-slider.is-other-active .source-strip-stack {
    opacity: 0;
    pointer-events: none;
}

.source-strip-osm {
    grid-column: 1;
    grid-row: 1;
}

.source-panel-google .source-panel-content {
    grid-column: 2;
    grid-row: 1;
}

.source-panel-google > .source-strip-other {
    grid-column: 3;
    grid-row: 1;
}

.source-panel-other > .source-strip-osm {
    grid-column: 1;
    grid-row: 1;
}

.source-panel-other > .source-strip-google {
    grid-column: 2;
    grid-row: 1;
}

.source-panel-other .source-panel-content {
    grid-column: 3;
    grid-row: 1;
}

.source-panel h3 {
    margin-top: 0;
}

.source-panel h4 {
    font-size: 20px;
    margin: 32px 0 14px;
}

.platform-card {
    border: 1px solid var(--color-border);
    border-radius: 14px;
    background: var(--color-soft);
    padding: 18px;
    margin: 18px 0;
}

.platform-card h4 {
    margin-top: 0;
}

.platform-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 16px;
}

.platform-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;

    color: #0F766E;
    text-decoration: none;
    font-size: 14px;
    font-weight: 700;

    border: 1px solid #99F6E4;
    border-radius: 999px;
    background: #F0FDFA;

    padding: 8px 12px;
}

.platform-link:hover {
    background: var(--color-primary-light);
}

.platform-note {
    margin-top: 22px;
    color: var(--color-muted);
    font-size: 14px;
}

@media (max-width: 640px) {
    .score-grid {
        grid-template-columns: 1fr;
    }

    .source-slider {
        min-height: 680px;
    }

    .source-panel {
        min-height: 680px;
    }

    .source-panel-osm {
        padding-right: 80px;
    }

    .source-panel-google {
        grid-template-columns: 40px minmax(0, 1fr) 40px;
    }

    .source-panel-other {
        grid-template-columns: 40px 40px minmax(0, 1fr);
    }

    .source-strip {
        width: 40px;
        font-size: 11px;
    }

    .source-strip-stack {
        grid-template-columns: 40px 40px;
    }

    .source-panel-content {
        padding: 20px;
    }

    .platform-actions {
        flex-direction: column;
        align-items: flex-start;
    }
}

.language-switcher {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 8px;

    margin-bottom: 18px;

    color: var(--color-muted);
    font-size: 14px;
    line-height: 1.4;
}

.language-switcher a {
    color: var(--color-muted);
    text-decoration: none;

    padding: 4px 8px;
    border-radius: 999px;

    transition:
        background-color 160ms ease,
        color 160ms ease;
}

.language-switcher a:hover {
    color: var(--color-primary-dark);
    background: var(--color-soft);
}

.language-switcher a.active {
    color: var(--color-primary-dark);
    background: var(--color-primary-light);
    font-weight: 700;
}

.language-switcher span {
    color: var(--color-border);
}

@media (max-width: 640px) {
    .language-switcher {
        justify-content: flex-start;
        flex-wrap: wrap;

        margin-bottom: 20px;
        font-size: 13px;
    }

    .language-switcher a {
        padding: 4px 7px;
    }
}

.site-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    margin-bottom: 34px;
}

.logo-link {
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    flex: 0 0 auto;
    max-width: 240px;
}

.site-header .logo-link img,
.site-header .logo {
    display: block;
    height: 52px;
    width: auto;
    max-width: 240px;
    object-fit: contain;
}

.site-header .language-switcher {
    margin-bottom: 0;
}

@media (max-width: 640px) {
    .site-header {
        align-items: flex-start;
        gap: 16px;
        margin-bottom: 28px;
    }

    .logo-link {
        max-width: 210px;
    }

    .site-header .logo-link img,
    .site-header .logo {
        height: 42px;
        max-width: 210px;
    }
}

@media (max-width: 420px) {
    .site-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .site-header .language-switcher {
        justify-content: flex-start;
    }
}

.app-footer {
    margin-top: 56px;
    padding-top: 28px;
    border-top: 1px solid var(--color-border);
    color: var(--color-muted);
    font-size: 14px;
    line-height: 1.5;
}

.app-footer-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
}

.app-footer-brand {
    margin: 0;
}

.app-footer-links {
    display: flex;
    align-items: center;
    gap: 22px;
    flex-wrap: wrap;
}

.app-footer-links a {
    color: #0066cc;
    text-decoration: none;
}

.app-footer-links a:hover {
    text-decoration: underline;
}

@media (max-width: 640px) {
    .app-footer {
        margin-top: 42px;
        padding-top: 22px;
    }

    .app-footer-inner {
        flex-direction: column;
        align-items: flex-start;
        gap: 14px;
    }

    .app-footer-links {
        gap: 14px;
    }
}