/* ==========================================================================
   APP-UI.CSS - PANTHERA STORE NATIVE APP LAYOUT & M3 COMPONENTS
   ========================================================================== */

/* --- 1. THE APP SHELL --- */
#app-shell {
    position: relative;
    width: 100vw;
    height: 100vh;
    height: 100dvh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* --- 2. TOP APP BAR (M3 Top App Bar) --- */
.app-bar {
    position: fixed;
    top: 0; left: 0; width: 100%;
    height: var(--app-bar-height);
    background: var(--app-bar-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex; align-items: center; justify-content: space-between;
    padding: 0 16px; z-index: 50;
    border-bottom: 1px solid var(--border-color);
    transition: background-color var(--transition-fast);
}
.brand-title { display: flex; align-items: center; gap: 8px; font-size: 1.2rem; font-weight: 800; letter-spacing: -0.5px; }
.app-bar-logo { width: 32px; height: 32px; border-radius: var(--radius-sm); }
.icon-btn { width: 40px; height: 40px; display: flex; align-items: center; justify-content: center; font-size: 1.5rem; color: var(--text-primary); border-radius: 50%; transition: background var(--transition-fast); }
.icon-btn:active { background: var(--bg-surface-variant); }

/* --- 3. SWIPEABLE VIEWPORT (3 Screens: Home, Blogs, Reader) --- */
.view-container {
    position: relative; width: 100vw;
    height: calc(100vh - var(--app-bar-height));
    height: calc(100dvh - var(--app-bar-height));
    margin-top: var(--app-bar-height); 
    overflow: hidden;
}

.swipe-track {
    display: flex;
    width: 300vw; /* 3 pages */
    height: 100%;
    transition: transform var(--transition-swipe);
    will-change: transform;
}

/* Scroll Fix Applied Here */
.view-page {
    width: 100vw; 
    height: 100%; 
    overflow-y: scroll; /* Forces vertical scroll inside the page */
    -webkit-overflow-scrolling: touch;
    padding-bottom: 120px; /* Space for bottom nav so content isn't hidden */
}

.page-content { padding: 20px; max-width: 800px; margin: 0 auto; }

/* ==========================================================================
   HEAVY HOME PAGE STYLING (M3 Cards)
   ========================================================================== */

/* Hero Section */
.hero-section { padding: 40px 0 30px; text-align: left; }
.main-heading { font-size: 2.6rem; font-weight: 900; line-height: 1.1; margin-bottom: 16px; letter-spacing: -1px; }
.highlight-text { color: var(--accent-green); }
.sub-heading { font-size: 1.1rem; color: var(--text-secondary); margin-bottom: 30px; line-height: 1.6; max-width: 90%; }
.hero-buttons { display: flex; gap: 12px; flex-wrap: wrap; }

/* M3 Buttons */
.btn-primary { background: var(--accent-green); color: #fff; padding: 14px 28px; border-radius: var(--radius-pill); font-weight: 700; font-size: 1rem; box-shadow: var(--shadow-md); transition: transform var(--transition-fast), box-shadow var(--transition-fast); }
.btn-primary:active { transform: scale(0.97); box-shadow: var(--shadow-sm); }
.btn-secondary { background: var(--bg-surface-variant); color: var(--text-primary); padding: 14px 28px; border-radius: var(--radius-pill); font-weight: 700; font-size: 1rem; border: 1px solid var(--border-color); transition: transform var(--transition-fast); }
.btn-secondary:active { transform: scale(0.97); }
.btn-text { color: var(--text-secondary); font-weight: 600; font-size: 1rem; display: flex; align-items: center; gap: 8px; padding: 8px 0; margin-bottom: 20px; transition: color var(--transition-fast); }
.btn-text:active { color: var(--text-primary); }

/* Features Grid */
.features-grid { display: grid; grid-template-columns: 1fr; gap: 16px; margin-bottom: 40px; }
@media(min-width: 600px) { .features-grid { grid-template-columns: 1fr 1fr; } }
.feature-card { background: var(--bg-surface); padding: 28px; border-radius: var(--radius-lg); border: 1px solid var(--border-color); box-shadow: var(--shadow-sm); }
.feature-icon { font-size: 2rem; color: var(--accent-green); margin-bottom: 16px; }
.feature-card h3 { font-size: 1.25rem; margin-bottom: 8px; letter-spacing: -0.5px; }
.feature-card p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.6; }

/* Section Titles */
.section-title { font-size: 1.5rem; margin-bottom: 20px; font-weight: 800; letter-spacing: -0.5px; }

/* Ecosystem Showcase */
.ecosystem-section { margin-bottom: 40px; }
.product-showcase { background: linear-gradient(145deg, var(--bg-surface), var(--bg-surface-variant)); border: 1px solid var(--border-color); border-radius: var(--radius-lg); padding: 28px; position: relative; overflow: hidden; box-shadow: var(--shadow-sm); }
.product-logo { width: 56px; height: 56px; border-radius: var(--radius-sm); margin-bottom: 16px; box-shadow: var(--shadow-sm); }
.product-showcase h3 { font-size: 1.5rem; margin-bottom: 8px; letter-spacing: -0.5px; }
.product-showcase p { color: var(--text-secondary); margin-bottom: 20px; line-height: 1.6; }
.product-link { display: inline-flex; align-items: center; gap: 8px; color: var(--accent-green); font-weight: 700; font-size: 1.05rem; }

/* Founder Section */
.founder-section { display: flex; align-items: center; gap: 20px; padding: 28px; background: var(--bg-surface); border-radius: var(--radius-lg); border: 1px solid var(--border-color); margin-bottom: 50px; box-shadow: var(--shadow-sm); }
.founder-img { width: 80px; height: 80px; border-radius: 50%; object-fit: cover; border: 2px solid var(--accent-green); }
.founder-title { font-size: 0.85rem; color: var(--accent-green); font-weight: 800; text-transform: uppercase; letter-spacing: 0.5px; margin-bottom: 4px; display: block; }
.founder-details h3 { font-size: 1.3rem; margin-bottom: 6px; letter-spacing: -0.5px; }
.founder-bio { font-size: 0.95rem; color: var(--text-secondary); line-height: 1.5; }

/* Heavy Footer */
.app-footer { text-align: center; padding: 30px 0 20px; border-top: 1px dashed var(--border-color); margin-top: 20px; }
.footer-brand { display: flex; justify-content: center; align-items: center; gap: 8px; margin-bottom: 12px; font-weight: 800; font-size: 1.1rem; letter-spacing: -0.5px; }
.footer-logo { width: 24px; height: 24px; opacity: 0.8; }
.footer-text { font-size: 0.85rem; color: var(--text-secondary); margin-bottom: 16px; }
.footer-links { display: flex; justify-content: center; gap: 12px; font-size: 0.9rem; color: var(--text-secondary); font-weight: 600; }
.footer-links a:hover { color: var(--text-primary); }


/* ==========================================================================
   BLOGS FEED & READER (M3 Standard)
   ========================================================================== */

/* Blog Cards (List View) */
#blog-feed-container { display: flex; flex-direction: column; gap: 20px; }
.blog-card { background: var(--bg-surface); border: 1px solid var(--border-color); border-radius: var(--radius-lg); overflow: hidden; box-shadow: var(--shadow-sm); cursor: pointer; transition: transform var(--transition-fast), box-shadow var(--transition-fast); }
.blog-card:active { transform: scale(0.98); box-shadow: 0 0 0 transparent; }
.blog-img-container { width: 100%; height: 180px; background: var(--bg-surface-variant); overflow: hidden; }
.blog-img-container img { width: 100%; height: 100%; object-fit: cover; }
.blog-meta { padding: 20px; }
.blog-date { font-size: 0.8rem; color: var(--accent-green); font-weight: 800; margin-bottom: 8px; display: block; text-transform: uppercase; letter-spacing: 0.5px; }
.blog-meta h3 { font-size: 1.3rem; margin-bottom: 10px; line-height: 1.3; letter-spacing: -0.5px; }
.blog-content { font-size: 0.95rem; color: var(--text-secondary); display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; line-height: 1.6; }

/* Blog Reader (Full Post View) */
.reader-header { margin-bottom: 24px; }
.reader-date { font-size: 0.85rem; color: var(--accent-green); font-weight: 800; text-transform: uppercase; letter-spacing: 1px; display: block; margin-bottom: 12px;}
.reader-title { font-size: 2.2rem; font-weight: 900; line-height: 1.2; margin-bottom: 24px; letter-spacing: -1px; }
.reader-img { width: 100%; height: 250px; object-fit: cover; border-radius: var(--radius-lg); margin-bottom: 30px; box-shadow: var(--shadow-sm); }
.reader-body { font-size: 1.1rem; line-height: 1.8; color: var(--text-secondary); }
.reader-body p { margin-bottom: 20px; }
.reader-body h3 { color: var(--text-primary); margin: 32px 0 16px; letter-spacing: -0.5px; font-size: 1.5rem; }


/* ==========================================================================
   M3 BOTTOM NAV & SIDEBAR
   ========================================================================== */

/* M3 Bottom Navigation */
.bottom-nav { position: fixed; bottom: 0; left: 0; width: 100%; height: var(--bottom-nav-height); background: var(--bottom-nav-bg); display: flex; justify-content: space-around; align-items: center; padding-bottom: env(safe-area-inset-bottom); z-index: 50; box-shadow: 0 -1px 0 var(--border-color); transition: background-color var(--transition-fast); }
.bottom-nav-btn { position: relative; flex: 1; height: 100%; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; color: var(--text-secondary); transition: color var(--transition-fast); }
.bottom-nav-btn i { font-size: 1.5rem; z-index: 2; transition: transform var(--transition-fast); }
.bottom-nav-btn span { font-size: 0.75rem; font-weight: 600; z-index: 2; margin-top: 4px; }
.icon-active { display: none; }
.icon-inactive { display: block; }

/* Active State */
.bottom-nav-btn.active { color: var(--text-primary); }
.bottom-nav-btn.active .icon-active { display: block; color: var(--accent-green); }
.bottom-nav-btn.active .icon-inactive { display: none; }

/* M3 Pill Indicator */
.nav-indicator { position: absolute; top: 12px; width: 64px; height: 32px; background: var(--accent-green-alpha); border-radius: 16px; opacity: 0; transform: scaleX(0.5); transition: all var(--transition-fast); z-index: 1; }
.bottom-nav-btn.active .nav-indicator { opacity: 1; transform: scaleX(1); }

/* Sidebar */
.overlay { position: fixed; top: 0; left: 0; width: 100vw; height: 100vh; background: rgba(0,0,0,0.5); opacity: 0; visibility: hidden; transition: all var(--transition-fast); z-index: 90; backdrop-filter: blur(2px); }
.overlay.active { opacity: 1; visibility: visible; }
.sidebar { position: fixed; top: 0; left: -320px; width: 300px; height: 100vh; background: var(--bg-surface); box-shadow: var(--shadow-md); transition: transform 0.3s cubic-bezier(0.2, 0, 0, 1); z-index: 100; display: flex; flex-direction: column; }
.sidebar.active { transform: translateX(320px); }
.sidebar-header { display: flex; align-items: center; padding: 24px 20px; border-bottom: 1px solid var(--border-color); gap: 12px; }
.sidebar-logo { width: 40px; height: 40px; border-radius: var(--radius-sm); }
.sidebar-header h2 { flex: 1; font-size: 1.2rem; font-weight: 800; letter-spacing: -0.5px; }
.sidebar-content { flex: 1; overflow-y: auto; padding: 20px 12px; }
.sidebar-links { list-style: none; }
.menu-label { padding: 16px 20px 8px; font-size: 0.75rem; text-transform: uppercase; font-weight: 800; color: var(--text-secondary); letter-spacing: 0.5px; }

/* M3 Sidebar Links */
.sidebar-links a, .theme-btn { display: flex; align-items: center; gap: 16px; padding: 14px 20px; color: var(--text-primary); font-weight: 600; font-size: 1rem; border-radius: 100px; transition: background var(--transition-fast), color var(--transition-fast); width: 100%; margin-bottom: 4px; }
.sidebar-links a i, .theme-btn i { font-size: 1.3rem; color: var(--text-secondary); transition: color var(--transition-fast); }
.sidebar-links a:active, .theme-btn:active { background: var(--bg-surface-variant); }
.sidebar-links a.active { background: var(--accent-green-alpha); color: var(--accent-green); }
.sidebar-links a.active i { color: var(--accent-green); }
.external-icon { margin-left: auto; font-size: 1rem !important; opacity: 0.5; }