/* =============================================================================
   Desktop App Download Page (/download)

   Uses the same CSS tokens as the main app (surface, accent, text-dim, etc.)
   so visual language stays consistent even though this page is served
   standalone by its own Flask template.
   ============================================================================= */

body.dl-page {
    margin: 0;
    padding: 0;
    min-height: 100vh;
    background: var(--bg);
    color: var(--text);
    font-family: var(--ui);
    line-height: 1.55;
    -webkit-font-smoothing: antialiased;
}

.dl-shell {
    max-width: 880px;
    margin: 0 auto;
    padding: 48px 24px 96px;
}

/* ---- Top bar (just a link back to the main app) ---- */
.dl-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 48px;
}

.dl-brand {
    font-family: var(--display);
    font-size: 1.15rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--text);
    text-decoration: none;
}

.dl-brand:hover {
    color: var(--accent);
}

.dl-back-link {
    font-size: 0.85rem;
    color: var(--text-dim);
    text-decoration: none;
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    transition: border-color 0.15s ease, color 0.15s ease;
}

.dl-back-link:hover {
    color: var(--text);
    border-color: var(--border-strong);
}

/* ---- Hero ---- */
.dl-hero {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 40px;
    padding: 40px 32px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    position: relative;
    overflow: hidden;
}

.dl-hero::before {
    /* Subtle accent glow anchored to the corner — matches app aesthetic */
    content: '';
    position: absolute;
    top: -80px;
    right: -80px;
    width: 260px;
    height: 260px;
    background: radial-gradient(closest-side, rgba(86, 194, 255, 0.22), transparent 70%);
    pointer-events: none;
}

.dl-eyebrow {
    font-family: var(--display);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: var(--accent);
    margin: 0;
}

.dl-title {
    font-family: var(--display);
    font-size: 2.4rem;
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: 0.01em;
    color: var(--text);
    margin: 0;
}

.dl-subtitle {
    font-size: 1.05rem;
    color: var(--text-dim);
    max-width: 62ch;
    margin: 0;
}

/* ---- Download meta row (version / size / date) ---- */
.dl-meta-row {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 8px;
    font-size: 0.9rem;
    color: var(--text-dim);
}

.dl-meta-item {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.dl-meta-label {
    color: var(--text-muted);
    text-transform: uppercase;
    font-size: 0.72rem;
    letter-spacing: 0.08em;
    font-weight: 600;
}

.dl-meta-value {
    font-family: var(--mono);
    color: var(--text);
    font-weight: 500;
}

/* ---- Download button ---- */
.dl-cta-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 14px;
    margin-top: 12px;
    z-index: 1;
    position: relative;
}

.dl-button {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 26px;
    background: var(--accent);
    color: #0a0d14;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    border: 1px solid var(--accent);
    border-radius: 10px;
    text-decoration: none;
    transition: filter 0.15s ease, transform 0.15s ease;
    cursor: pointer;
}

.dl-button:hover {
    filter: brightness(1.08);
    transform: translateY(-1px);
}

.dl-button:focus-visible {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
}

.dl-button.is-disabled {
    background: var(--surface-alt);
    color: var(--text-muted);
    border-color: var(--border);
    pointer-events: none;
    cursor: not-allowed;
    filter: none;
    transform: none;
}

.dl-button-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.dl-refresh-link {
    font-size: 0.85rem;
    color: var(--text-dim);
    background: none;
    border: none;
    padding: 6px 10px;
    cursor: pointer;
    text-decoration: underline;
    text-underline-offset: 3px;
}

.dl-refresh-link:hover {
    color: var(--accent);
}

.dl-status {
    margin-top: 6px;
    font-size: 0.9rem;
    color: var(--text-dim);
    max-width: 60ch;
}

.dl-status-pending {
    color: var(--amber);
}

/* ---- Section cards ---- */
.dl-section {
    margin-top: 40px;
    padding: 32px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
}

.dl-section-title {
    font-family: var(--display);
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    color: var(--text);
    margin: 0 0 16px;
}

.dl-section-lead {
    color: var(--text-dim);
    margin: 0 0 20px;
    max-width: 68ch;
}

/* ---- SmartScreen walkthrough (numbered steps + callouts) ---- */
.dl-callout {
    display: flex;
    gap: 14px;
    padding: 16px 18px;
    margin: 18px 0;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-left: 3px solid var(--accent);
    border-radius: 8px;
    color: var(--text-dim);
    font-size: 0.92rem;
}

.dl-callout-warning {
    border-left-color: var(--amber);
}

.dl-callout-info {
    border-left-color: var(--accent);
}

.dl-callout-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    margin-top: 2px;
    color: var(--accent);
}

.dl-callout-warning .dl-callout-icon {
    color: var(--amber);
}

.dl-callout-body {
    flex: 1;
}

.dl-callout-body strong {
    color: var(--text);
}

.dl-steps {
    list-style: none;
    padding: 0;
    margin: 24px 0 12px;
    counter-reset: dl-step;
}

.dl-step {
    counter-increment: dl-step;
    position: relative;
    padding: 16px 20px 16px 64px;
    margin-bottom: 12px;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: 10px;
}

.dl-step::before {
    content: counter(dl-step);
    position: absolute;
    left: 18px;
    top: 50%;
    transform: translateY(-50%);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    background: var(--accent-dim);
    color: var(--accent);
    border: 1px solid rgba(86, 194, 255, 0.35);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--mono);
    font-size: 0.95rem;
    font-weight: 700;
}

.dl-step-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text);
    margin: 0 0 4px;
}

.dl-step-body {
    font-size: 0.92rem;
    color: var(--text-dim);
    margin: 0;
}

.dl-kbd {
    display: inline-block;
    padding: 1px 8px;
    font-family: var(--mono);
    font-size: 0.82rem;
    color: var(--text);
    background: var(--surface-hi);
    border: 1px solid var(--border-strong);
    border-bottom-width: 2px;
    border-radius: 4px;
}

/* ---- "What it does" feature list ---- */
.dl-features {
    list-style: none;
    padding: 0;
    margin: 0;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 14px;
}

.dl-feature {
    display: flex;
    gap: 12px;
    padding: 14px 16px;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: 8px;
}

.dl-feature-bullet {
    flex-shrink: 0;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--accent);
    margin-top: 8px;
}

.dl-feature-text {
    color: var(--text-dim);
    font-size: 0.93rem;
}

.dl-feature-text strong {
    color: var(--text);
    display: block;
    margin-bottom: 2px;
    font-weight: 600;
}

/* ---- System requirements ---- */
.dl-req-list {
    list-style: none;
    padding: 0;
    margin: 0;
    color: var(--text-dim);
    font-size: 0.92rem;
}

.dl-req-list li {
    padding: 8px 0;
    border-bottom: 1px solid var(--border);
}

.dl-req-list li:last-child {
    border-bottom: none;
}

.dl-req-list strong {
    color: var(--text);
    font-weight: 600;
}

/* ---- SHA-256 verification block ---- */
.dl-sha-block {
    margin-top: 18px;
    padding: 14px 16px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: 8px;
}

.dl-sha-label {
    font-family: var(--display);
    font-size: 0.72rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.dl-sha-value {
    font-family: var(--mono);
    font-size: 0.82rem;
    color: var(--text-dim);
    word-break: break-all;
    user-select: all;
}

/* ---- Footer ---- */
.dl-footer {
    margin-top: 48px;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    font-size: 0.82rem;
    color: var(--text-muted);
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 12px;
}

.dl-footer a {
    color: var(--text-dim);
    text-decoration: none;
}

.dl-footer a:hover {
    color: var(--accent);
}

/* ---- Header "Get Desktop App" button in the main app ---- */
.btn-get-desktop {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 12px;
    border: 1px solid var(--border-strong);
    border-radius: 6px;
    background: transparent;
    color: var(--accent);
    font-family: var(--ui);
    font-size: 0.8rem;
    font-weight: 600;
    text-decoration: none;
    transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}

.btn-get-desktop:hover {
    background: var(--accent-dim);
    border-color: var(--accent);
}

.btn-get-desktop-icon {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

/* ---- Small screens ---- */
@media (max-width: 640px) {
    .dl-shell {
        padding: 28px 16px 64px;
    }
    .dl-hero {
        padding: 28px 20px;
    }
    .dl-title {
        font-size: 1.8rem;
    }
    .dl-section {
        padding: 22px 18px;
    }
    .dl-step {
        padding: 14px 16px 14px 56px;
    }
    .dl-step::before {
        left: 12px;
        width: 28px;
        height: 28px;
    }
}