/* ============================================================
   CLEANSHEET — Product Page Styles
   ============================================================ */

/* ---------- Product Hero ---------- */
.product-hero {
    padding: calc(56px + var(--space-20)) 0 var(--space-16);
    border-bottom: 1px solid var(--color-border);
}

.product-hero-badge {
    font-size: var(--text-xs);
    font-weight: var(--weight-medium);
    color: var(--color-accent);
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: var(--space-3);
}

.product-hero h1 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: var(--weight-bold);
    letter-spacing: -0.03em;
    margin-bottom: var(--space-5);
    line-height: var(--leading-tight);
}

.product-hero-desc {
    font-size: var(--text-base);
    color: var(--color-text-secondary);
    max-width: 560px;
    line-height: var(--leading-normal);
}

/* ---------- Features ---------- */
.product-features {
    padding: var(--space-20) 0;
    border-bottom: 1px solid var(--color-border);
}

.product-features h2 {
    margin-bottom: var(--space-10);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8) var(--space-6);
}

.feature-item {
    display: flex;
    flex-direction: column;
}

.feature-item h3 {
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    margin-bottom: var(--space-2);
    letter-spacing: -0.01em;
}

.feature-item p {
    font-size: var(--text-sm);
    color: var(--color-text-secondary);
    line-height: var(--leading-normal);
}

/* ---------- Application Area ---------- */
.product-app-area {
    padding: var(--space-20) 0;
}

.app-placeholder {
    border: 1px solid var(--color-border);
    background-color: var(--color-surface);
}

.app-placeholder-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 360px;
    padding: var(--space-12);
    text-align: center;
    color: var(--color-text-muted);
}

.app-placeholder-inner p {
    font-size: var(--text-sm);
    color: var(--color-text-muted);
}

.app-placeholder-hint {
    margin-top: var(--space-2);
    font-size: var(--text-xs) !important;
    font-family: var(--font-mono);
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-6);
    }
}

@media (max-width: 640px) {
    .product-hero {
        padding-top: calc(56px + var(--space-12));
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .product-features,
    .product-app-area {
        padding: var(--space-12) 0;
    }

    .app-placeholder-inner {
        min-height: 240px;
    }
}

/* ============================================================================
   Unified Mubsira Navigation Shell
   ============================================================================ */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: rgba(15, 24, 37, 0.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.nav-container {
    max-width: 1040px;
    margin: 0 auto;
    padding: 0 24px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.nav-brand {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
    color: #fff;
    font-weight: 700;
    font-size: 15px;
    letter-spacing: -0.02em;
}
.nav-brand .brand-dot { color: #4a8eff; }
.nav-brand .brand-sep { opacity: 0.3; font-weight: 400; margin: 0 4px; }
.nav-brand .brand-app { font-weight: 600; opacity: 0.85; }
.nav-right {
    display: flex;
    align-items: center;
    gap: 20px;
}
.nav-links {
    display: flex;
    gap: 20px;
    list-style: none;
    padding: 0;
    margin: 0;
}
.nav-links a {
    font-size: 13px;
    font-weight: 400;
    color: rgba(255, 255, 255, 0.55);
    text-decoration: none;
    transition: color 0.15s ease;
}
.nav-links a:hover { color: #fff; }
.nav-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}
.nav-btn {
    padding: 6px 12px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    background: transparent;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
    color: rgba(255, 255, 255, 0.5);
    cursor: pointer;
    letter-spacing: 0.06em;
    transition: border-color 0.15s ease, color 0.15s ease;
}
.nav-btn:hover {
    border-color: rgba(255, 255, 255, 0.5);
    color: #fff;
}
.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    padding: 8px;
    cursor: pointer;
    background: none;
    border: none;
}
.nav-toggle span {
    display: block;
    width: 18px;
    height: 1.5px;
    background-color: #fff;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

/* Unified Footer */
.site-footer {
    background-color: #0f1825;
    padding: 32px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.06);
}
.footer-inner {
    max-width: 1040px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
.footer-copy {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
}
.footer-links-list {
    display: flex;
    gap: 20px;
    list-style: none;
    padding: 0;
    margin: 0;
}
.footer-links-list a {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.4);
    text-decoration: none;
    transition: color 0.15s ease;
}
.footer-links-list a:hover { color: rgba(255, 255, 255, 0.8); }

/* Mobile nav */
@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 56px;
        left: 0;
        right: 0;
        background-color: rgba(15, 24, 37, 0.97);
        backdrop-filter: blur(16px);
        border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        flex-direction: column;
        padding: 16px 24px;
        gap: 12px;
        transform: translateY(-110%);
        opacity: 0;
        pointer-events: none;
        transition: transform 0.2s ease, opacity 0.2s ease;
        z-index: 999;
    }
    .nav-links.is-open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }
    .nav-links a { font-size: 14px; color: rgba(255, 255, 255, 0.7); }
    .nav-toggle { display: flex; }
    .brand-sep, .brand-app { display: none; }
    .product-hero {
        padding-top: calc(56px + var(--space-12));
    }
    .footer-inner {
        flex-direction: column;
        text-align: center;
        gap: 12px;
    }
    .footer-links-list {
        flex-wrap: wrap;
        justify-content: center;
        gap: 12px;
    }
}