/* ============================================================
   DOWNLOAD-APP.CSS — Official Companion App Download Page
   ResQplus IoT Product Website
   ============================================================ */

.app-page-wrapper {
    padding-top: calc(var(--nav-height) + var(--space-2xl));
    padding-bottom: var(--space-5xl);
    min-height: 100vh;
}

/* --- Hero Section --- */
.app-hero {
    text-align: center;
    padding: var(--space-xl) 0 var(--space-4xl);
}

.app-hero .label {
    display: inline-block;
    margin-bottom: var(--space-xs);
}

.app-hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.25rem, 5vw, 3.75rem);
    font-weight: var(--fw-bold);
    color: var(--text-primary);
    letter-spacing: -0.03em;
    line-height: 1.15;
    margin-bottom: var(--space-md);
}

.app-hero-subtitle {
    font-size: var(--fs-body-lg);
    color: var(--text-secondary);
    max-width: 620px;
    margin: 0 auto var(--space-2xl);
    line-height: var(--lh-relaxed);
}

/* --- Primary Download Cards Grid --- */
.download-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    max-width: 1080px;
    margin: 0 auto var(--space-4xl);
    align-items: stretch;
}

.download-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: clamp(2rem, 3.5vw, 2.5rem);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    text-align: center;
    position: relative;
    overflow: hidden;
    transition: all var(--duration-normal) var(--ease-out);
}

.download-card:hover {
    background: var(--bg-surface);
    border-color: rgba(0, 122, 204, 0.4);
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}

.download-card.featured {
    border-color: rgba(0, 122, 204, 0.5);
    background: linear-gradient(180deg, rgba(0, 122, 204, 0.08) 0%, var(--bg-elevated) 100%);
}

.featured-pill {
    position: absolute;
    top: 1.25rem;
    right: 1.25rem;
    font-size: var(--fs-xs);
    font-weight: var(--fw-semibold);
    color: #ffffff;
    background: linear-gradient(135deg, #005ea6 0%, #007acc 100%);
    padding: 3px 10px;
    border-radius: var(--radius-full);
}

.download-card-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-lg);
    background: rgba(0, 122, 204, 0.12);
    border: 1px solid rgba(0, 122, 204, 0.25);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-lg);
    color: var(--accent-light, #38bdf8);
}

.download-card-icon svg {
    width: 30px;
    height: 30px;
}

.download-card-title {
    font-family: var(--font-display);
    font-size: var(--fs-h3);
    font-weight: var(--fw-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.download-card-desc {
    font-size: var(--fs-small);
    color: var(--text-secondary);
    line-height: var(--lh-normal);
    margin-bottom: var(--space-lg);
    flex: 1;
}

.download-meta {
    font-size: var(--fs-xs);
    color: var(--text-muted);
    margin-bottom: var(--space-lg);
}

.btn-download-action {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    width: 100%;
    padding: 0.85rem 1.5rem;
    font-size: var(--fs-button);
    font-weight: var(--fw-semibold);
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, #005ea6 0%, #007acc 60%, #0c88e8 100%);
    color: #ffffff !important;
    text-decoration: none;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.25);
    transition: all var(--duration-fast) var(--ease-out);
}

.btn-download-action:hover {
    background: linear-gradient(135deg, #005291 0%, #006cb4 60%, #0b7ad1 100%);
    box-shadow: 0 6px 20px rgba(0, 122, 204, 0.35);
    transform: translateY(-2px);
}

.btn-download-outline {
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary) !important;
    box-shadow: none;
}

.btn-download-outline:hover {
    border-color: var(--accent-primary);
    color: #ffffff !important;
    background: var(--accent-glow);
}

/* --- QR Code Scanner Showcase Section --- */
.qr-showcase-section {
    padding: 0 0 var(--space-4xl);
}

.qr-showcase-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: clamp(2.5rem, 5vw, 3.5rem);
    display: grid;
    grid-template-columns: 1.1fr 0.9fr;
    gap: var(--space-2xl);
    align-items: center;
    max-width: 1080px;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.qr-showcase-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, #38bdf8 30%, #007acc 70%, transparent);
}

.qr-left .label {
    display: inline-block;
    margin-bottom: var(--space-xs);
}

.qr-title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 3.2vw, 2.35rem);
    font-weight: var(--fw-bold);
    color: var(--text-primary);
    line-height: 1.25;
    margin-bottom: var(--space-md);
}

.qr-desc {
    font-size: var(--fs-body);
    color: var(--text-secondary);
    line-height: var(--lh-relaxed);
    margin-bottom: var(--space-xl);
}

.qr-instructions {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
}

.qr-step {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: var(--fs-small);
    color: var(--text-secondary);
}

.qr-step-num {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: rgba(0, 122, 204, 0.15);
    border: 1px solid rgba(0, 122, 204, 0.3);
    color: var(--accent-light, #38bdf8);
    font-size: var(--fs-xs);
    font-weight: var(--fw-bold);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.qr-box-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-2xl);
    text-align: center;
}

.qr-code-graphic {
    padding: 12px;
    background: #ffffff;
    border-radius: var(--radius-md);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
    margin-bottom: var(--space-md);
}

.qr-box-container span {
    font-size: var(--fs-small);
    color: var(--text-muted);
}

.qr-box-container strong {
    color: var(--text-primary);
}

/* --- App Features Grid --- */
.app-features-section {
    padding: 0 0 var(--space-4xl);
}

.app-features-section .section-header {
    text-align: center;
    margin-bottom: var(--space-3xl);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-md);
    max-width: 1140px;
    margin: 0 auto;
}

.feature-item-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    transition: all var(--duration-normal) var(--ease-out);
}

.feature-item-card:hover {
    background: var(--bg-surface);
    border-color: rgba(0, 122, 204, 0.35);
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
}

.feature-item-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    background: rgba(0, 122, 204, 0.12);
    border: 1px solid rgba(0, 122, 204, 0.22);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-light, #38bdf8);
    margin-bottom: var(--space-md);
}

.feature-item-card h3 {
    font-size: var(--fs-body-lg);
    font-weight: var(--fw-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-2xs);
}

.feature-item-card p {
    font-size: var(--fs-small);
    color: var(--text-secondary);
    line-height: var(--lh-normal);
}

/* --- Setup Steps --- */
.app-setup-section {
    padding: 0 0 var(--space-4xl);
}

.setup-steps-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    max-width: 1080px;
    margin: 0 auto;
}

.setup-step-card {
    padding: var(--space-xl);
    background: var(--bg-elevated);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    position: relative;
}

.setup-step-num {
    font-family: var(--font-display);
    font-size: var(--fs-h2);
    font-weight: var(--fw-extrabold);
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-md);
    line-height: 1;
}

.setup-step-card h4 {
    font-size: var(--fs-h4);
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.setup-step-card p {
    font-size: var(--fs-small);
    color: var(--text-secondary);
    line-height: var(--lh-relaxed);
}

/* --- Need Help Banner --- */
.app-help-banner {
    max-width: 1080px;
    margin: 0 auto;
    background: radial-gradient(circle at 50% 0%, rgba(0, 122, 204, 0.1) 0%, var(--bg-elevated) 70%);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: clamp(2.5rem, 5vw, 3.5rem);
    text-align: center;
}

.app-help-banner h2 {
    font-size: var(--fs-h2);
    color: var(--text-primary);
    margin-bottom: var(--space-xs);
}

.app-help-banner p {
    font-size: var(--fs-body);
    color: var(--text-secondary);
    margin: 0 auto var(--space-xl);
    max-width: 520px;
}

.app-help-actions {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    flex-wrap: wrap;
}

/* --- Responsive --- */
@media (max-width: 900px) {
    .download-grid {
        grid-template-columns: 1fr;
        max-width: 480px;
    }

    .qr-showcase-card {
        grid-template-columns: 1fr;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .setup-steps-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 600px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

/* Light Theme Styling for Download App Page */
[data-theme="light"] .download-card {
    background: #ffffff;
    border: 1px solid rgba(15, 23, 42, 0.12);
    box-shadow: 0 4px 18px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.04);
}

[data-theme="light"] .download-card:hover {
    background: #ffffff;
    border-color: rgba(0, 110, 184, 0.5);
    box-shadow: 0 0 0 1.5px rgba(0, 110, 184, 0.25), 0 16px 36px rgba(15, 23, 42, 0.12);
    transform: translateY(-4px);
}

[data-theme="light"] .download-card-icon {
    background: rgba(0, 110, 184, 0.08);
    border-color: rgba(0, 110, 184, 0.22);
    color: var(--accent-primary);
}

[data-theme="light"] .qr-showcase-card {
    background: #ffffff;
    border: 1px solid rgba(15, 23, 42, 0.12);
    box-shadow: 0 6px 24px rgba(15, 23, 42, 0.07), 0 2px 6px rgba(15, 23, 42, 0.04);
}

[data-theme="light"] .feature-item-card {
    background: #ffffff;
    border: 1px solid rgba(15, 23, 42, 0.12);
    box-shadow: 0 3px 12px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.04);
}

[data-theme="light"] .feature-item-card:hover {
    background: #ffffff;
    border-color: rgba(0, 110, 184, 0.5);
    box-shadow: 0 0 0 1.5px rgba(0, 110, 184, 0.25), 0 16px 34px rgba(15, 23, 42, 0.12);
    transform: translateY(-3px);
}

[data-theme="light"] .feature-item-icon {
    background: rgba(0, 110, 184, 0.08);
    border-color: rgba(0, 110, 184, 0.22);
    color: var(--accent-primary);
}

[data-theme="light"] .setup-step-card {
    background: #ffffff;
    border: 1px solid rgba(15, 23, 42, 0.12);
    box-shadow: 0 3px 12px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.04);
}

[data-theme="light"] .setup-step-card:hover {
    background: #ffffff;
    border-color: rgba(0, 110, 184, 0.5);
    box-shadow: 0 0 0 1.5px rgba(0, 110, 184, 0.25), 0 16px 34px rgba(15, 23, 42, 0.12);
    transform: translateY(-3px);
}