:root {
    /* === Color Palette: Calming & Trustworthy === */
    --color-primary-main: #00796B; /* Teal 700 */
    --color-primary-dark: #004D40; /* Teal 900 */
    --color-primary-light: #E0F2F7; /* Lighter Teal/Cyan tint */
    --color-primary-contrast: #FFFFFF;

    --color-surface-main: #FFFFFF;
    --color-surface-raised: #FFFFFF;
    --color-surface-container: #F8FAFC; /* Very light grey-blue background */
    --color-surface-border: #E2E8F0; /* Softer border */
    --color-surface-border-light: #F1F5F9;

    --color-text-primary: #1E293B; /* Dark Slate */
    --color-text-secondary: #475569; /* Medium Slate */
    --color-text-disabled: #94A3B8; /* Light Slate */
    --color-text-on-primary: var(--color-primary-contrast);
    --color-text-link: var(--color-primary-main);

    --color-error-main: #E53E3E; /* Clear Red */
    --color-error-surface: #FFF5F5; /* Very light red */
    --color-error-contrast: var(--color-error-main);

    --color-focus-ring: rgba(0, 121, 107, 0.4); /* Teal focus */

    /* === Typography: Readability Focus === */
    --font-family-base: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol";
    --font-size-base: 1rem;       /* 16px */
    --font-size-sm: 0.875rem;   /* 14px */
    --font-size-lg: 1.125rem;   /* 18px */
    --font-size-xl: 1.5rem;     /* 24px */

    --line-height-base: 1.7; /* Increased for comfort */
    --line-height-heading: 1.4;
    --font-weight-regular: 400;
    --font-weight-medium: 600;
    --font-weight-bold: 700;

    /* === Spacing: Generous & Consistent (8px grid) === */
    --space-xs: 0.25rem;  /* 4px */
    --space-sm: 0.5rem;   /* 8px */
    --space-md: 1rem;     /* 16px */
    --space-lg: 1.5rem;   /* 24px */
    --space-xl: 2rem;     /* 32px */
    --space-xxl: 3rem;    /* 48px */

    /* === Borders & Radius === */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --border-width: 1px;

    /* === Shadows: Subtle Elevation === */
    --box-shadow-1: 0 1px 2px 0 rgba(21, 31, 43, 0.05);
    --box-shadow-2: 0 4px 6px -1px rgba(21, 31, 43, 0.08), 0 2px 4px -2px rgba(21, 31, 43, 0.05);
    --box-shadow-3: 0 10px 15px -3px rgba(21, 31, 43, 0.08), 0 4px 6px -4px rgba(21, 31, 43, 0.05);

    /* === Transitions === */
    --transition-duration: 0.2s;
    --transition-timing: ease-in-out;

    /* === Z-Indexes === */
    --z-index-snackbar: 100;
    --z-index-spinner-overlay: 10; /* Behålls om den används någon annanstans, annars kan den tas bort */
    --z-index-header: 50;
}

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

html {
    font-size: var(--font-size-base);
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
}

body {
    font-family: var(--font-family-base);
    font-weight: var(--font-weight-regular);
    line-height: var(--line-height-base);
    color: var(--color-text-primary);
    background-color: var(--color-surface-container);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* === Header (Mobile First) === */
.site-header {
    background-color: var(--color-surface-main);
    border-bottom: var(--border-width) solid var(--color-surface-border);
    box-shadow: var(--box-shadow-1);
    position: sticky;
    top: 0;
    z-index: var(--z-index-header);
    padding: var(--space-sm) var(--space-md);
}

.site-header .header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 100%;
    margin: 0 auto;
    padding: 0;
}

.logo {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary-main);
    display: flex;
    align-items: center;
}

.logo-link {
    text-decoration: none;
    color: inherit;
    display: inline-block;
}

.logo-link:hover,
.logo-link:focus {
    text-decoration: none;
    color: inherit;
    outline: none;
}

.header-nav-link {
    color: var(--color-text-link);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    border-radius: var(--border-radius-sm);
    transition: background-color var(--transition-duration) var(--transition-timing),
                color var(--transition-duration) var(--transition-timing);
    font-size: calc(var(--font-size-sm) * 0.95);
    padding: var(--space-xs);
}

.header-nav-link:hover,
.header-nav-link:focus {
    text-decoration: underline;
    color: var(--color-primary-dark);
    background-color: var(--color-surface-border-light);
    outline: none;
}


/* === Main Content (Mobile First) === */
.main-content {
    flex-grow: 1;
    display: flex;
    justify-content: center;
    align-items: flex-start;
    width: 100%;
    padding: var(--space-lg) var(--space-md);
}

.app-container {
    background-color: var(--color-surface-raised);
    box-shadow: var(--box-shadow-2);
    width: 100%;
    max-width: 768px;
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
    padding: var(--space-md);
    border-radius: var(--border-radius-md);
}

.query-section {
    position: relative;
}

.result-section:not(:empty) {
    border-top: var(--border-width) solid var(--color-surface-border-light);
    padding-top: var(--space-xl);
    margin-top: var(--space-xl);
}

/* === Footer (Mobile First) === */
.site-footer {
    background-color: transparent;
    color: var(--color-text-secondary);
    text-align: center;
    border-top: var(--border-width) solid var(--color-surface-border-light);
    margin-top: var(--space-xxl);
    font-size: var(--font-size-sm);
    padding: var(--space-md);
}

.site-footer a.footer-link {
    color: var(--color-text-link);
    text-decoration: none;
    font-size: var(--font-size-sm);
    margin-top: var(--space-xs);
    display: inline-block;
}
.site-footer a.footer-link:hover,
.site-footer a.footer-link:focus {
    text-decoration: underline;
    color: var(--color-primary-dark);
}

/* === Headings & Text (Mobile First) === */
.section-title {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-heading);
    margin-bottom: var(--space-lg);
    color: var(--color-text-primary);
    text-align: center;
    font-size: var(--font-size-lg);
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
    gap: var(--space-md);
}

.result-title {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.error-title {
    color: var(--color-error-main);
}

.error-icon {
    flex-shrink: 0;
    color: var(--color-error-main);
}

/* === Forms & Buttons === */
#question-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-control {
    width: 100%;
    padding: var(--space-md);
    border: var(--border-width) solid var(--color-surface-border);
    border-radius: var(--border-radius-md);
    font-size: var(--font-size-base);
    font-family: inherit;
    line-height: var(--line-height-base);
    color: var(--color-text-primary);
    background-color: var(--color-surface-main);
    transition: border-color var(--transition-duration) var(--transition-timing),
                box-shadow var(--transition-duration) var(--transition-timing);
    resize: vertical;
    min-height: 110px;
}

.form-control:focus-visible {
    outline: none;
    border-color: var(--color-primary-main);
    box-shadow: 0 0 0 3px var(--color-focus-ring);
    background-color: var(--color-surface-main);
}

.form-control::placeholder {
    color: var(--color-text-disabled);
    opacity: 1;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: calc(var(--space-md) - 2px) var(--space-lg);
    border: var(--border-width) solid transparent;
    border-radius: var(--border-radius-md);
    font-family: inherit;
    font-weight: var(--font-weight-medium);
    font-size: var(--font-size-base);
    cursor: pointer;
    text-align: center;
    text-decoration: none;
    transition: background-color var(--transition-duration) var(--transition-timing),
                border-color var(--transition-duration) var(--transition-timing),
                color var(--transition-duration) var(--transition-timing),
                box-shadow var(--transition-duration) var(--transition-timing),
                transform 0.1s ease-out;
    position: relative; /* Viktigt för positionering av laddningsinnehåll */
    overflow: hidden; /* För att hålla laddningsinnehållet snyggt */
    min-height: 50px; /* Exempel, justera så text och spinner får plats */
}

.btn:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px var(--color-focus-ring);
    z-index: 1;
}

.btn:active:not(:disabled) {
    transform: translateY(1px);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background-color: var(--color-primary-main);
    color: var(--color-text-on-primary);
    border-color: var(--color-primary-main);
    box-shadow: var(--box-shadow-1);
}

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    box-shadow: var(--box-shadow-2);
}

.btn-icon {
    padding: var(--space-xs);
    background-color: transparent;
    border: none;
    color: var(--color-text-secondary);
    border-radius: 50%;
    line-height: 0;
    transition: background-color var(--transition-duration) var(--transition-timing),
                color var(--transition-duration) var(--transition-timing);
}

.btn-icon svg {
    display: block;
}

.btn-icon:hover:not(:disabled) {
    background-color: var(--color-surface-border-light);
    color: var(--color-primary-dark);
}

/* === Results & Answers === */
.result-block {
    animation: resultFadeIn 0.4s ease-out forwards;
    opacity: 0;
    border-radius: var(--border-radius-md);
    padding: var(--space-lg);
    border: var(--border-width) solid var(--color-surface-border);
}

@keyframes resultFadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.answer-block {
    background-color: var(--color-surface-main);
}

.answer-content {
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    word-wrap: break-word;
    color: var(--color-text-secondary);
}

.answer-content p {
    margin-bottom: var(--space-md);
}
.answer-content p:last-child {
    margin-bottom: 0;
}

.answer-content strong {
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
}
.answer-content em {
    font-style: italic;
    color: var(--color-text-primary);
}

.answer-content ol,
.answer-content ul {
    padding-inline-start: var(--space-lg);
    margin-top: var(--space-md);
    margin-bottom: var(--space-md);
}

.answer-content li {
    margin-bottom: var(--space-sm);
    padding-left: var(--space-xs);
}

.answer-content p + ol,
.answer-content p + ul,
.answer-content ol + p,
.answer-content ul + p {
    margin-top: var(--space-md);
}

.answer-content ul ul,
.answer-content ol ol,
.answer-content ul ol,
.answer-content ol ul {
     margin-top: var(--space-sm);
     margin-bottom: var(--space-sm);
     padding-inline-start: var(--space-lg);
}

/* === Error States === */
.error-block {
    background-color: var(--color-error-surface);
    border-color: var(--color-error-main);
}

.error-message-content {
    font-size: var(--font-size-base);
    color: var(--color-error-main);
    font-weight: var(--font-weight-medium);
}

/* === Loading State === */
.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid var(--color-text-on-primary);
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

body.is-loading .form-control {
    background-color: var(--color-surface-border-light);
    cursor: not-allowed;
    opacity: 0.7;
}
body.is-loading .form-control:focus-visible {
     box-shadow: none;
}

/* Ask Button Loading Styles */
.ask-button-default-text {
    transition: opacity var(--transition-duration) var(--transition-timing),
                visibility var(--transition-duration) var(--transition-timing);
}

.ask-button-loading-content {
    position: absolute;
    inset: 0; /* Täcker hela knappen */
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-duration) var(--transition-timing),
                visibility var(--transition-duration) var(--transition-timing);
    /* Behåll knappens bakgrundsfärg för konsistens */
    background-color: inherit; /* Eller var(--color-primary-main) om .btn-primary är target */
    color: var(--color-text-on-primary);
    border-radius: inherit; /* Ärver knappens border-radius */
    padding: 0 var(--space-sm); /* Lite padding så spinner/text inte slår i kanterna */
}

.loading-text-details {
    display: flex;
    flex-direction: column;
    align-items: flex-start; /* Justera om spinnern är till vänster */
    text-align: left; /* Justera om spinnern är till vänster */
}

.loading-message {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: 1.2; /* Lite tightare för att spara plats */
    white-space: nowrap; /* Förhindra att meddelandet bryts om det är kort */
    overflow: hidden; /* Om meddelandet skulle bli för långt */
    text-overflow: ellipsis; /* ... om det blir för långt */
    max-width: 180px; /* Sätt en maxbredd så det inte blir för brett i knappen, justera efter behov */
}

.loading-timer {
    font-size: calc(var(--font-size-sm) * 0.85);
    opacity: 0.8;
    margin-top: calc(var(--space-xs) / 2);
    font-family: monospace;
}

body.is-loading #ask-button {
    cursor: wait;
}

body.is-loading #ask-button .ask-button-default-text {
    opacity: 0;
    visibility: hidden;
}

body.is-loading #ask-button .ask-button-loading-content {
    opacity: 1;
    visibility: visible;
}


/* === Snackbar (Mobile First) === */
.snackbar {
    position: fixed;
    background-color: var(--color-text-primary);
    color: var(--color-surface-main);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--border-radius-md);
    box-shadow: var(--box-shadow-3);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    z-index: var(--z-index-snackbar);
    transition: transform 0.4s cubic-bezier(0.2, 0, 0, 1), visibility 0s 0.4s;
    visibility: hidden;
    text-align: center;
    white-space: nowrap;
    width: calc(100% - var(--space-md) * 2);
    left: var(--space-md);
    bottom: var(--space-md);
    transform: translate(0, calc(100% + var(--space-md)));
}

.snackbar.show {
    transform: translate(0, 0);
    visibility: visible;
    transition: transform 0.4s cubic-bezier(0.2, 0, 0, 1), visibility 0s 0s;
}

/* === Beta / Test Version Styling === */
.beta-tag {
    display: inline-block;
    margin-left: var(--space-sm);
    padding: var(--space-xs) var(--space-sm);
    font-size: calc(var(--font-size-sm) * 0.85);
    font-weight: var(--font-weight-bold);
    line-height: 1;
    color: var(--color-primary-dark);
    background-color: var(--color-primary-light);
    border: 1px solid var(--color-primary-main);
    border-radius: var(--border-radius-sm);
    vertical-align: middle;
    text-transform: uppercase;
    align-self: center;
}

.beta-info-text {
    background-color: var(--color-primary-light);
    border: var(--border-width) solid var(--color-primary-main);
    border-radius: var(--border-radius-md);
    padding: var(--space-md);
    margin-bottom: var(--space-lg);
    text-align: center;
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.beta-info-text strong {
    color: var(--color-primary-dark);
    font-weight: var(--font-weight-bold);
}

.footer-beta-notice {
    display: block;
    margin-bottom: var(--space-xs);
    font-style: italic;
}

/* === Styles for About Page (tidigare inline) === */
.page-about .about-content h2 {
    font-weight: var(--font-weight-bold);
    color: var(--color-text-primary);
    margin-top: var(--space-lg);
    margin-bottom: var(--space-md);
    line-height: var(--line-height-heading);
    /* font-size ärvs från .section-title i mobile-first eller sätts specifikt i media queries nedan */
}

.page-about .about-content p,
.page-about .about-content ul {
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.page-about .about-content ul {
    list-style-position: outside;
    padding-inline-start: var(--space-lg);
}

.page-about .about-content li {
    margin-bottom: var(--space-sm);
    padding-left: var(--space-xs);
}

.page-about .about-content strong {
     font-weight: var(--font-weight-bold);
     color: var(--color-text-primary);
}

.page-about .important-note {
    background-color: var(--color-error-surface);
    border: var(--border-width) solid var(--color-error-main);
    border-radius: var(--border-radius-md);
    padding: var(--space-lg);
    margin-top: var(--space-xl);
    margin-bottom: var(--space-xl);
}
.page-about .important-note h2 { /* Mer specifik regel */
    color: var(--color-error-main);
    margin-top: 0;
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--font-size-lg); /* Kan behöva justeras per breakpoint */
}
 .page-about .important-note .error-icon {
    flex-shrink: 0;
    height: 20px;
    width: 20px;
}
.page-about .important-note p {
    color: var(--color-error-main);
    font-weight: var(--font-weight-medium);
    margin-bottom: 0;
}

.page-about .back-link {
    display: inline-block;
    margin-top: var(--space-lg);
    color: var(--color-text-link);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
}
.page-about .back-link:hover,
.page-about .back-link:focus {
    text-decoration: underline;
    color: var(--color-primary-dark);
}


/* === Responsiveness: Tablet and larger (min-width: 601px) === */
@media (min-width: 601px) {
    .site-header {
        padding: var(--space-md) var(--space-lg);
    }
    .header-nav-link {
        font-size: var(--font-size-sm);
        padding: var(--space-xs) var(--space-sm);
    }
    .main-content {
        padding: var(--space-xl) var(--space-md);
    }
    .app-container {
        padding: var(--space-lg);
    }
    .section-title {
        font-size: var(--font-size-xl);
    }
    .page-about .about-content h2 {
        font-size: var(--font-size-lg); /* Justering för Om-sidans H2 */
    }
    .page-about .important-note h2 {
        font-size: var(--font-size-lg); /* Justering för Om-sidans H2 inuti important note */
    }
    .snackbar {
        width: auto;
        max-width: calc(100% - var(--space-lg) * 2);
        left: 50%;
        bottom: var(--space-lg);
        transform: translate(-50%, calc(100% + var(--space-lg)));
    }
    .snackbar.show {
        transform: translate(-50%, 0);
    }
    .site-footer {
        padding: var(--space-lg) var(--space-md);
    }
    .loading-message {
        max-width: 220px; /* Ge lite mer plats på större skärmar */
    }
}

/* === Responsiveness: Desktop and larger (min-width: 901px) === */
@media (min-width: 901px) {
    .site-header .header-container {
        max-width: 960px;
    }
    .app-container {
        padding: var(--space-xl);
        border-radius: var(--border-radius-lg);
    }
     .main-content {
        padding: var(--space-xl) var(--space-lg);
    }
    .page-about .about-content h2 {
        font-size: var(--font-size-xl); /* Justering för Om-sidans H2 på desktop */
    }
     .page-about .important-note h2 {
        font-size: var(--font-size-xl); /* Justering för Om-sidans H2 inuti important note på desktop */
    }
     .loading-message {
        max-width: 250px; /* Ännu mer plats */
    }
}