/* ==========================================================================
   Info pages: help.html, privacy.html, terms.html.

   One stylesheet for the three pages a stranger reads, the same way auth.css
   serves the three auth sub-pages. It replaced help.html's inline <style> in
   Phase 0E session 1; privacy.html and terms.html loaded no stylesheet at all.

   A FIXED-DARK surface: white text over earth.jpg regardless of theme, so the
   header logo is pinned to simplified-h-dark.svg and carries no
   data-pista-logo (see .claude/rules/frontend.md). The favicon still swaps.
   ========================================================================== */

html, body {
    margin: 0;
    min-height: 100vh;
    min-height: 100dvh;
    font-family: Roboto, sans-serif;
    color: #ffffff;
    overscroll-behavior: none;
}

/* On html ONLY: shown until earth.jpg arrives. A background on body would paint
   over .earth-bg, which sits at z-index: -1 inside the root stacking context. */
html {
    background: #0e0b16;
}

.earth-bg {
    position: fixed;
    inset: 0;
    z-index: -1;
    background: url("./pictures/earth.jpg") center / cover no-repeat;
}

a {
    color: #d0bcff;
}

/* --- Back button ---------------------------------------------------------- */

.back-button {
    position: fixed;
    top: 24px;
    left: 24px;
    z-index: 1000;
}

.back-button md-filled-tonal-button {
    height: 48px;
    --md-filled-tonal-button-container-color: #244788;
    --md-filled-tonal-button-label-text-color: #ffffff;
    --md-filled-tonal-button-icon-color: #ffffff;
    --md-filled-tonal-button-hover-label-text-color: #ffffff;
    --md-filled-tonal-button-hover-icon-color: #ffffff;
    --md-filled-tonal-button-focus-label-text-color: #ffffff;
    --md-filled-tonal-button-pressed-label-text-color: #ffffff;
}

/* --- Layout --------------------------------------------------------------- */

.container {
    box-sizing: border-box;
    max-width: 900px;
    margin: 0 auto;
    padding: 100px 20px 60px;
}

.header {
    text-align: center;
    margin-bottom: 40px;
}

.header-logo {
    display: block;
    height: 42px;
    width: auto;
    margin: 0 auto 24px;
}

.header h1 {
    font-size: 56px;
    font-weight: 900;
    letter-spacing: 3px;
    margin: 0;
    text-shadow: 0 4px 16px rgba(0, 0, 0, 0.5);
}

.header p {
    font-size: 18px;
    margin: 16px 0 0;
}

/* --- Help: search --------------------------------------------------------- */

.search-box {
    margin-bottom: 40px;
}

.search-box md-filled-text-field {
    width: 100%;
}

.search-empty {
    text-align: center;
    color: rgba(255, 255, 255, 0.85);
    margin: 0 0 32px;
}

/* --- Help: FAQ accordion (native <details name="faq">) ---------------------- */

.faq-section {
    margin-bottom: 32px;
}

.section-title {
    font-size: 28px;
    font-weight: 700;
    margin: 0 0 20px;
    color: rgba(255, 255, 255, 0.95);
}

.faq-item {
    background: rgba(35, 29, 52, 0.65);
    backdrop-filter: blur(8px);
    border-radius: 16px;
    margin-bottom: 12px;
    transition: background 0.3s ease;
}

.faq-item:hover,
.faq-item[open] {
    background: rgba(30, 26, 40, 0.9);
}

.faq-item summary {
    display: flex;
    align-items: center;
    gap: 16px;
    min-height: 48px;
    padding: 12px 24px;
    cursor: pointer;
    user-select: none;
    list-style: none;
    border-radius: 16px;
}

.faq-item summary::-webkit-details-marker {
    display: none;
}

.faq-item summary:focus-visible {
    outline: 2px solid #d0bcff;
    outline-offset: 2px;
}

.faq-q {
    margin: 0;
    font-size: 18px;
    font-weight: 500;
    flex: 1;
    min-width: 0;
}

.faq-item summary md-icon {
    flex-shrink: 0;
    transition: transform 0.3s ease;
    color: rgba(255, 255, 255, 0.7);
}

.faq-item[open] summary md-icon {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 24px 20px;
}

.faq-answer p {
    margin: 0;
    line-height: 1.6;
    color: rgba(255, 255, 255, 0.85);
}

/* --- Help: contact -------------------------------------------------------- */

.contact-section {
    background: rgba(20, 16, 30, 0.85);
    backdrop-filter: blur(8px);
    border-radius: 20px;
    padding: 32px;
    text-align: center;
    margin-top: 48px;
}

.contact-section h2 {
    font-size: 32px;
    font-weight: 700;
    margin: 0 0 12px;
}

.contact-section p {
    font-size: 16px;
    color: rgba(255, 255, 255, 0.8);
    margin: 0 0 24px;
}

.contact-address {
    font-weight: 500;
    color: #ffffff;
}

.contact-buttons {
    display: flex;
    gap: 12px;
    justify-content: center;
    flex-wrap: wrap;
}

.contact-buttons md-filled-tonal-button {
    height: 48px;
    --md-filled-tonal-button-container-color: rgba(255, 255, 255, 0.3);
    --md-filled-tonal-button-label-text-color: #ffffff;
    --md-filled-tonal-button-icon-color: #ffffff;
    --md-filled-tonal-button-hover-label-text-color: #ffffff;
    --md-filled-tonal-button-hover-icon-color: #ffffff;
}

/* --- Legal pages ------------------------------------------------------------
   One <article data-legal-lang> per language; info.js un-hides the one that
   matches i18n.js's language. English is the one visible without JavaScript. */

.legal {
    background: rgba(20, 16, 30, 0.85);
    backdrop-filter: blur(8px);
    border-radius: 20px;
    padding: 32px 40px;
    line-height: 1.65;
    color: rgba(255, 255, 255, 0.88);
}

.legal[hidden] {
    display: none;
}

.legal .updated {
    margin-top: 0;
    color: rgba(255, 255, 255, 0.7);
    font-size: 14px;
}

.legal h2 {
    font-size: 22px;
    font-weight: 700;
    color: #ffffff;
    margin: 32px 0 8px;
}

.legal ul {
    padding-left: 22px;
}

.legal li {
    margin-bottom: 6px;
}

.legal code {
    font-size: 0.92em;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 4px;
    padding: 1px 5px;
    overflow-wrap: anywhere;
}

.legal .note {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.7);
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    margin-top: 32px;
    padding-top: 16px;
}

/* --- Phones --------------------------------------------------------------- */

@media (max-width: 768px) {
    .back-button {
        top: 16px;
        left: 16px;
    }

    .container {
        padding: 88px 16px 40px;
    }

    .header h1 {
        font-size: 36px;
        letter-spacing: 1px;
    }

    .header p {
        font-size: 16px;
    }

    .section-title {
        font-size: 22px;
    }

    .faq-item summary {
        padding: 12px 16px;
    }

    .faq-q {
        font-size: 16px;
    }

    .faq-answer {
        padding: 0 16px 16px;
    }

    .contact-section {
        padding: 24px 16px;
    }

    .contact-section h2 {
        font-size: 26px;
    }

    .legal {
        padding: 24px 16px;
    }

    .legal h2 {
        font-size: 19px;
    }
}