/* Import Cairo Arabic Font */
@import url('https://fonts.googleapis.com/css2?family=Cairo:wght@300;400;500;600;700;800;900&display=swap');

/* --- Reset & Base --- */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

:root {
    --font-family: 'Cairo', sans-serif;
    --transition-speed: 0.3s;
    
    /* Default Theme Variables: Elegant Light Theme */
    --app-bg: #faf8f5;
    --app-bg-gradient: linear-gradient(135deg, #f7f3ed 0%, #faf8f5 100%);
    --app-panel-bg: #ffffff;
    --app-panel-border: 1px solid rgba(197, 160, 89, 0.2);
    --app-text: #2a251f;
    --app-text-muted: #7d7265;
    --app-accent: #c5a059; /* Soft Gold */
    --app-accent-rgb: 197, 160, 89;
    --app-accent-hover: #b08d4b;
    --app-shadow: 0 10px 30px rgba(197, 160, 89, 0.08);
    --app-card-radius: 16px;
    --badge-found-bg: rgba(16, 185, 129, 0.1);
    --badge-found-text: #059669;
    --badge-missing-bg: rgba(220, 38, 38, 0.1);
    --badge-missing-text: #dc2626;
    --badge-unknown-bg: rgba(217, 119, 6, 0.1);
    --badge-unknown-text: #d97706;
    --font-weight-title: 700;
    
    /* Safe Area Insets for Mobile Browser */
    --safe-padding-bottom: env(safe-area-inset-bottom, 0px);
}

/* --- Theme Classes --- */

/* 1. Luxury Dark Theme */
.theme-luxury-dark {
    --app-bg: #0d0d0d;
    --app-bg-gradient: linear-gradient(135deg, #121212 0%, #080808 100%);
    --app-panel-bg: rgba(26, 26, 26, 0.8);
    --app-panel-border: 1px solid rgba(212, 175, 55, 0.18);
    --app-text: #ffffff;
    --app-text-muted: #c5b49e;
    --app-accent: #d4af37; /* Champagne Gold */
    --app-accent-rgb: 212, 175, 55;
    --app-accent-hover: #f3e5ab;
    --app-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.6);
    --app-card-radius: 16px;
    --badge-found-bg: rgba(16, 185, 129, 0.18);
    --badge-found-text: #34d399;
    --badge-missing-bg: rgba(239, 68, 68, 0.18);
    --badge-missing-text: #f87171;
    --badge-unknown-bg: rgba(245, 158, 11, 0.18);
    --badge-unknown-text: #fbbf24;
}

/* 2. Elegant Light Theme (redundant but explicit for state management) */
.theme-elegant-light {
    --app-bg: #faf8f5;
    --app-bg-gradient: linear-gradient(135deg, #f7f3ed 0%, #faf8f5 100%);
    --app-panel-bg: #ffffff;
    --app-panel-border: 1px solid rgba(197, 160, 89, 0.2);
    --app-text: #2a251f;
    --app-text-muted: #7d7265;
    --app-accent: #c5a059;
    --app-accent-rgb: 197, 160, 89;
    --app-accent-hover: #b08d4b;
    --app-shadow: 0 10px 30px rgba(197, 160, 89, 0.08);
    --app-card-radius: 16px;
    --badge-found-bg: rgba(16, 185, 129, 0.1);
    --badge-found-text: #059669;
    --badge-missing-bg: rgba(220, 38, 38, 0.1);
    --badge-missing-text: #dc2626;
    --badge-unknown-bg: rgba(217, 119, 6, 0.1);
    --badge-unknown-text: #d97706;
}

/* 3. Modern Professional Dashboard Theme */
.theme-modern-dashboard {
    --app-bg: #f8fafc;
    --app-bg-gradient: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
    --app-panel-bg: #ffffff;
    --app-panel-border: 1px solid #e2e8f0;
    --app-text: #0f172a;
    --app-text-muted: #64748b;
    --app-accent: #3b82f6; /* Modern Tech Blue */
    --app-accent-rgb: 59, 130, 246;
    --app-accent-hover: #1d4ed8;
    --app-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --app-card-radius: 12px;
    --badge-found-bg: #dcfce7;
    --badge-found-text: #166534;
    --badge-missing-bg: #fee2e2;
    --badge-missing-text: #991b1b;
    --badge-unknown-bg: #fef3c7;
    --badge-unknown-text: #92400e;
}

/* 4. Bold Mobile Scanner Theme */
.theme-bold-scanner {
    --app-bg: #090d16;
    --app-bg-gradient: linear-gradient(180deg, #090d16 0%, #151e2e 100%);
    --app-panel-bg: #1e293b;
    --app-panel-border: 2px solid #334155;
    --app-text: #f8fafc;
    --app-text-muted: #94a3b8;
    --app-accent: #f59e0b; /* Safety Amber */
    --app-accent-rgb: 245, 158, 11;
    --app-accent-hover: #d97706;
    --app-shadow: 0 0 15px rgba(245, 158, 11, 0.15);
    --app-card-radius: 6px;
    --badge-found-bg: #10b981;
    --badge-found-text: #06150f;
    --badge-missing-bg: #ef4444;
    --badge-missing-text: #0e0404;
    --badge-unknown-bg: #f59e0b;
    --badge-unknown-text: #0e0901;
}

/* --- Layout & Typography Settings --- */
html, body {
    height: 100%;
    width: 100%;
    font-family: var(--font-family);
    background: var(--app-bg-gradient);
    color: var(--app-text);
    direction: rtl;
    text-align: right;
    transition: background var(--transition-speed), color var(--transition-speed);
}

/* Force container wrapper to look optimal on both mobile screen and desktop preview */
.app-container {
    max-width: 480px; /* Force mobile portrait look on desktop */
    min-height: 100vh;
    margin: 0 auto;
    background: var(--app-bg-gradient);
    display: flex;
    flex-direction: column;
    box-shadow: 0 0 40px rgba(0,0,0,0.1);
    position: relative;
    border-left: var(--app-panel-border);
    border-right: var(--app-panel-border);
    transition: background var(--transition-speed);
}

/* --- App Header Component --- */
.app-header {
    background: var(--app-panel-bg);
    border-bottom: var(--app-panel-border);
    padding: 16px 14px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    transition: background var(--transition-speed), border var(--transition-speed);
}

.app-logo-section {
    display: flex;
    align-items: center;
    gap: 10px;
}

.app-logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--app-accent), var(--app-text));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--app-bg);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.app-title {
    font-size: 1.05rem;
    font-weight: 800;
    color: var(--app-accent);
}

.app-header-meta {
    display: flex;
    align-items: center;
    gap: 8px;
}

.device-status-badge {
    background: rgba(16, 185, 129, 0.1);
    color: #10b981;
    font-size: 0.7rem;
    padding: 3px 8px;
    border-radius: 12px;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 5px;
}

/* --- Main Layout Scroll Area --- */
.app-content {
    flex: 1;
    padding: 16px 14px;
    display: flex;
    flex-direction: column;
    gap: 16px;
    overflow-y: auto;
}

/* Page titles */
.page-title-row {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 4px;
}

.page-title-row i {
    color: var(--app-accent);
    font-size: 1.25rem;
}

.page-title-row h2 {
    font-size: 1.25rem;
    font-weight: 800;
}

/* --- Dashboard / Summary Grid & Cards --- */
.summary-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
}

.summary-card {
    background: var(--app-panel-bg);
    border: var(--app-panel-border);
    border-radius: var(--app-card-radius);
    padding: 14px;
    box-shadow: var(--app-shadow);
    display: flex;
    flex-direction: column;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.summary-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--app-accent);
    opacity: 0.15;
}

.summary-card-title {
    font-size: 0.8rem;
    color: var(--app-text-muted);
    margin-bottom: 6px;
}

.summary-card-value {
    font-size: 1.55rem;
    font-weight: 800;
    color: var(--app-accent);
    line-height: 1.2;
}

.summary-card-sub {
    font-size: 0.7rem;
    color: var(--app-text-muted);
    margin-top: 6px;
    display: flex;
    justify-content: space-between;
}

/* --- App Buttons --- */
.app-btn {
    background: var(--app-accent);
    color: #ffffff; /* Contrast white on gold */
    border: none;
    padding: 14px 20px;
    border-radius: var(--app-card-radius);
    font-family: var(--font-family);
    font-weight: 700;
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    box-shadow: var(--app-shadow);
    width: 100%;
}

/* Dark theme button text adjustment for gold background */
.theme-luxury-dark .app-btn,
.theme-elegant-light .app-btn {
    color: #000000;
}

.app-btn:hover {
    filter: brightness(1.1);
}

.app-btn:active {
    transform: scale(0.98);
}

.app-btn-secondary {
    background: transparent;
    border: var(--app-panel-border);
    color: var(--app-text);
    box-shadow: none;
}

.app-btn-secondary:hover {
    background: rgba(var(--app-accent-rgb), 0.05);
}

.app-btn-danger {
    background: #ef4444;
    color: #ffffff !important;
    box-shadow: none;
}

.app-btn-danger:hover {
    background: #dc2626;
}

/* --- Status Badges --- */
.app-badge {
    padding: 4px 10px;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.badge-found {
    background-color: var(--badge-found-bg);
    color: var(--badge-found-text);
}

.badge-missing {
    background-color: var(--badge-missing-bg);
    color: var(--badge-missing-text);
}

.badge-unknown {
    background-color: var(--badge-unknown-bg);
    color: var(--badge-unknown-text);
}

/* --- Luxury Product Card --- */
.app-product-card {
    background: var(--app-panel-bg);
    border: var(--app-panel-border);
    border-radius: var(--app-card-radius);
    overflow: hidden;
    box-shadow: var(--app-shadow);
    display: flex;
    flex-direction: row-reverse; /* Elegant side-by-side inside RTL */
    height: auto;
    min-height: 100px;
    transition: all 0.3s ease;
}

.product-img-holder {
    width: 90px;
    background-size: cover;
    background-position: center;
    position: relative;
    flex-shrink: 0;
    border-right: var(--app-panel-border); /* Border separating thumbnail on left from text on right */
}

.product-img-placeholder {
    width: 90px;
    background: linear-gradient(135deg, rgba(var(--app-accent-rgb), 0.1) 0%, rgba(0,0,0,0.05) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--app-accent);
    flex-shrink: 0;
    border-right: var(--app-panel-border);
}

.product-info {
    flex: 1;
    padding: 10px 12px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    text-align: right;
    min-width: 0;
}

.product-title {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--app-text);
    white-space: normal;
    word-break: break-word;
    line-height: 1.35;
}

.product-epc {
    font-family: monospace;
    font-size: 0.7rem;
    color: var(--app-text-muted);
    letter-spacing: 0.5px;
    margin-top: 1px;
    direction: ltr;
    text-align: right;
}

.product-meta-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 4px;
}

.product-weight {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--app-accent);
}

.product-price {
    font-size: 0.85rem;
    font-weight: 800;
}

/* --- List Group Navigation --- */
.app-nav-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.app-nav-item {
    background: var(--app-panel-bg);
    border: var(--app-panel-border);
    border-radius: var(--app-card-radius);
    padding: 14px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-decoration: none;
    color: var(--app-text);
    transition: all 0.2s ease;
    cursor: pointer;
    box-shadow: var(--app-shadow);
}

.app-nav-item:hover {
    transform: translateX(-4px);
    border-color: var(--app-accent);
}

.app-nav-item-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.app-nav-icon {
    width: 36px;
    height: 36px;
    border-radius: 10px;
    background: rgba(var(--app-accent-rgb), 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--app-accent);
    font-size: 1rem;
}

.app-nav-label {
    font-size: 0.95rem;
    font-weight: 700;
}

.app-nav-arrow {
    font-size: 0.9rem;
    color: var(--app-accent);
    opacity: 0.7;
}

/* --- Input Fields --- */
.input-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.input-label {
    font-size: 0.8rem;
    color: var(--app-text-muted);
    font-weight: 700;
}

.app-input {
    width: 100%;
    background: var(--app-panel-bg);
    border: var(--app-panel-border);
    color: var(--app-text);
    padding: 12px 14px;
    border-radius: var(--app-card-radius);
    font-family: var(--font-family);
    font-size: 0.9rem;
    transition: all 0.2s;
    outline: none;
}

.app-input:focus {
    border-color: var(--app-accent);
    box-shadow: 0 0 10px rgba(var(--app-accent-rgb), 0.15);
}

/* --- Realtime Scan Console UI --- */
.scan-console {
    background: rgba(0, 0, 0, 0.03);
    border-radius: var(--app-card-radius);
    border: var(--app-panel-border);
    padding: 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.theme-luxury-dark .scan-console,
.theme-bold-scanner .scan-console {
    background: rgba(0, 0, 0, 0.3);
}

.scan-status-title {
    font-size: 0.8rem;
    color: var(--app-text-muted);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.scan-signal-bars {
    display: flex;
    gap: 2px;
    align-items: flex-end;
    height: 12px;
}

.scan-signal-bar {
    width: 3px;
    background: var(--app-text-muted);
    border-radius: 1px;
    transition: background 0.2s;
}

.scan-signal-bars.scanning .scan-signal-bar {
    background: var(--app-accent);
    animation: bar-pulse 0.6s infinite alternate;
}

.scan-signal-bars.scanning .scan-signal-bar:nth-child(2) { animation-delay: 0.15s; }
.scan-signal-bars.scanning .scan-signal-bar:nth-child(3) { animation-delay: 0.3s; }
.scan-signal-bars.scanning .scan-signal-bar:nth-child(4) { animation-delay: 0.45s; }

@keyframes bar-pulse {
    from { height: 3px; }
    to { height: 12px; }
}

.scan-signal-bar:nth-child(1) { height: 4px; }
.scan-signal-bar:nth-child(2) { height: 6px; }
.scan-signal-bar:nth-child(3) { height: 9px; }
.scan-signal-bar:nth-child(4) { height: 12px; }

.scan-live-feed {
    display: flex;
    flex-direction: column;
    gap: 10px;
    max-height: calc(100vh - 420px);
    overflow-y: auto;
    margin-top: 4px;
}

.empty-state-container {
    text-align: center;
    color: var(--app-text-muted);
    font-size: 0.85rem;
    padding: 40px 14px;
    border: 1px dashed var(--app-panel-border);
    border-radius: var(--app-card-radius);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
}

.empty-state-icon {
    font-size: 2.2rem;
    color: var(--app-accent);
    opacity: 0.8;
}

/* Scanning concentric pulses in HTML UI */
.scan-visual-pulser {
    position: relative;
    width: 100%;
    height: 4px;
    background: rgba(var(--app-accent-rgb), 0.1);
    overflow: hidden;
    border-radius: 2px;
    display: none;
}

.scan-visual-pulser.active {
    display: block;
}

.scan-visual-pulser::after {
    content: '';
    position: absolute;
    left: -50%;
    width: 50%;
    height: 100%;
    background: linear-gradient(90deg, rgba(var(--app-accent-rgb), 0) 0%, var(--app-accent) 50%, rgba(var(--app-accent-rgb), 0) 100%);
    animation: pulse-slider 1.5s linear infinite;
}

@keyframes pulse-slider {
    from { left: -50%; }
    to { left: 100%; }
}



/* --- Bottom Sticky Navigation (Simulating Native App) --- */
.app-bottom-nav {
    background: var(--app-panel-bg);
    border-top: var(--app-panel-border);
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: space-around;
    position: sticky;
    bottom: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    padding-bottom: var(--safe-padding-bottom);
}

.bottom-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--app-text-muted);
    text-decoration: none;
    font-size: 0.7rem;
    font-weight: 700;
    gap: 4px;
    flex: 1;
    height: 100%;
}

.bottom-nav-item i {
    font-size: 1.15rem;
}

.bottom-nav-item.active {
    color: var(--app-accent);
}

/* Hide scrollbars */
::-webkit-scrollbar {
    width: 4px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--app-panel-border);
    border-radius: 4px;
}