: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: 36px 20px 48px;
}

.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;
}

.logo {
    display: block;
    height: 52px;
    width: auto;
}

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

    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);
}

.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;
    letter-spacing: -0.03em;
}

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

h3 {
    font-size: 20px;
    margin: 0 0 14px;
}

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;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 220px;
    gap: 16px;
}

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

.optional {
    color: var(--color-muted);
    font-weight: 400;
}

input[type="text"],
textarea,
select {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--color-border);
    border-radius: 10px;
    font-size: 16px;
    font-family: inherit;
    background: #FFFFFF;
    color: var(--color-text);
}

textarea {
    min-height: 140px;
    resize: vertical;
}

input[type="text"]:focus,
textarea:focus,
select:focus {
    outline: 3px solid rgba(15, 118, 110, 0.14);
    border-color: var(--color-primary);
}

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);
}

button:disabled {
    opacity: 0.75;
    cursor: wait;
}

.hint {
    color: var(--color-muted);
    font-size: 14px;
    line-height: 1.5;
    margin-top: 6px;
}

.loading-box {
    display: none;
    margin-top: 16px;
    background: var(--color-soft);
    border-radius: 12px;
    padding: 14px 16px;
}

.loading-inline {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--color-primary-dark);
    font-weight: 700;
}

.spinner {
    width: 16px;
    height: 16px;
    border: 3px solid rgba(15, 118, 110, 0.18);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.85s linear infinite;
    flex: 0 0 auto;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

.error-box {
    background: #FEF2F2;
    border: 1px solid #FECACA;
    border-left: 5px solid var(--color-error);
    border-radius: 8px;
    padding: 16px 18px;
    color: #991B1B;
    margin-bottom: 24px;
}

.result-block {
    border-top: 1px solid var(--color-border);
    padding-top: 20px;
    margin-top: 20px;
}

#answer-section {
    scroll-margin-top: 32px;
}

.result-block:first-child {
    border-top: 0;
    padding-top: 0;
    margin-top: 0;
}

.result-text,
.analysis-box {
    white-space: pre-wrap;
    font-size: 16px;
    line-height: 1.65;
}

.analysis-box br {
    display: block;
    margin-bottom: 6px;
    content: "";
}

.notice {
    margin-top: 16px;
    padding: 14px 16px;
    background: var(--color-soft);
    border-radius: 12px;
    color: var(--color-muted);
    font-size: 14px;
    line-height: 1.5;
}

.copy-row {
    margin-top: 16px;
    display: flex;
    align-items: center;
    gap: 12px;
    flex-wrap: wrap;
}

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

summary {
    cursor: pointer;
    font-weight: 700;
    color: var(--color-primary-dark);
}

.details-content {
    margin-top: 14px;
    color: var(--color-text);
}

.details-content ul {
    padding-left: 20px;
    margin: 0 0 12px;
}

.details-content li {
    margin-bottom: 8px;
}

.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;
}

@media (max-width: 640px) {
    .page {
        padding: 24px 14px 32px;
    }

    .site-header {
        align-items: flex-start;
        gap: 16px;
        margin-bottom: 28px;
    }

    .logo {
        height: 42px;
    }

    .language-switcher {
        justify-content: flex-end;
        flex-wrap: wrap;
        font-size: 13px;
    }

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

    h1 {
        font-size: 32px;
    }

    .card {
        padding: 20px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }
}

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

    .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;
    }
}

.analysis-box p {
    margin: 0 0 8px;
}

.analysis-box p:last-child {
    margin-bottom: 0;
}

.analysis-box strong {
    font-weight: 800;
}

.analysis-box .labeled-result-line {
    margin: 0 0 6px;
    line-height: 1.45;
}

.analysis-box .labeled-result-line:last-child {
    margin-bottom: 0;
}

.analysis-box .labeled-result-line strong {
    font-weight: 800;
}

.privacy-hint {
    margin: 4px 0 4px;
    color: var(--color-muted);
    font-size: 14px;
    line-height: 1.55;
}

.privacy-hint a {
    color: var(--color-primary);
    font-weight: 700;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.privacy-hint a:hover {
    color: var(--color-primary-dark);
}