/* ==========================================================================
   DESIGN SYSTEM & VARIABLES
   ========================================================================== */
:root {
    /* Color Tokens - Dark Theme (Default) */
    --bg-primary: #0a0b0d;
    --bg-secondary: #121418;
    --bg-surface: rgba(22, 26, 32, 0.7);
    --bg-surface-hover: rgba(30, 36, 45, 0.9);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --accent-red: #e52b2b;
    --accent-red-rgb: 229, 43, 43;
    
    --glass-bg: rgba(15, 17, 23, 0.75);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-shadow: rgba(0, 0, 0, 0.5);
    
    --book-shadow: 0 15px 45px rgba(0, 0, 0, 0.6);
    --glow-color: rgba(229, 43, 43, 0.2);
    
    /* Layout Tokens */
    --page-width: 380px;
    --page-height: 537px; /* 1 : 1.414 standard ratio */
    --book-width: calc(var(--page-width) * 2);
    --border-radius-sm: 6px;
    --border-radius-md: 12px;
    --border-radius-lg: 20px;
    --powered-bg: rgba(255, 255, 255, 0.03);
    --powered-border: rgba(255, 255, 255, 0.05);
    
    --transition-speed: 0.8s;
    --transition-timing: cubic-bezier(0.25, 1, 0.5, 1); /* Ease Out Expo */
}

/* Light Theme Overrides */
.light-theme {
    --bg-primary: #f1f5f9;
    --bg-secondary: #e2e8f0;
    --bg-surface: rgba(255, 255, 255, 0.8);
    --bg-surface-hover: rgba(255, 255, 255, 0.95);
    
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-muted: #64748b;
    
    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(15, 23, 42, 0.08);
    --glass-shadow: rgba(15, 23, 42, 0.1);
    
    --book-shadow: 0 10px 30px rgba(15, 23, 42, 0.15);
    --glow-color: rgba(229, 43, 43, 0.08);
    --powered-bg: rgba(0, 0, 0, 0.03);
    --powered-border: rgba(0, 0, 0, 0.05);
}

/* ==========================================================================
   RESET & BASE STYLES
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html, body {
    overflow: hidden;
    height: 100%;
    width: 100%;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    display: flex;
    justify-content: center;
    align-items: center;
    transition: background-color 0.5s ease, color 0.5s ease;
}

/* Dynamic Ambient Glow */
.ambient-glow {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 900px;
    height: 900px;
    border-radius: 50%;
    background: radial-gradient(circle, var(--glow-color) 0%, transparent 70%);
    filter: blur(80px);
    z-index: 1;
    pointer-events: none;
    transition: background 0.8s ease-in-out, var(--glow-color) 0.8s ease-in-out;
}

.grid-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(var(--glass-border) 1px, transparent 1px);
    background-size: 24px 24px;
    z-index: 2;
    pointer-events: none;
    opacity: 0.6;
}

/* ==========================================================================
   APP LAYOUT
   ========================================================================== */
.app-container {
    position: relative;
    z-index: 3;
    width: 100%;
    max-width: 100vw;
    min-width: 0; /* Prevents container from stretching horizontally due to inner elements */
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
}

/* Header */
.app-header {
    text-align: center;
    margin-bottom: 10px;
    user-select: none;
}

.header-logo-wrapper {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 16px;
    margin-bottom: 2px;
}

.brand-logo-img {
    height: 40px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.08));
    transition: transform 0.3s var(--transition-timing);
}

.brand-logo-img:hover {
    transform: scale(1.03);
}

.powered-by {
    display: flex;
    align-items: center;
    gap: 6px;
    background: var(--powered-bg);
    border: 1px solid var(--powered-border);
    padding: 4px 10px;
    border-radius: 20px;
    transition: background 0.3s, border-color 0.3s;
}

.powered-text {
    font-size: 0.65rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: 500;
}

.powered-logo-img {
    height: 18px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 0 5px rgba(255, 255, 255, 0.1));
}

.header-tagline {
    font-size: 0.85rem;
    font-weight: 400;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 4px;
    margin-top: 4px;
}

/* ==========================================================================
   3D FLIPBOOK VIEWPORT
   ========================================================================== */
.book-viewport {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    perspective: 1800px;
    width: 100%;
    max-width: 100vw;
    min-width: 0; /* Prevents viewport from stretching horizontally due to inner book-container */
    max-height: calc(100vh - 180px);
}

.book-container {
    position: relative;
    width: var(--book-width);
    height: var(--page-height);
    transition: transform var(--transition-speed) var(--transition-timing);
    transform-style: preserve-3d;
}

.book {
    position: relative;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
}

/* Paper Sheet Styling */
.paper {
    position: absolute;
    width: 50%;
    height: 100%;
    top: 0;
    left: 50%; /* Position the sheet starting at the hinge (center) */
    transform-origin: left center;
    transform-style: preserve-3d;
    transition: transform var(--transition-speed) var(--transition-timing);
    pointer-events: auto;
}

.paper.flipping {
    z-index: 100 !important;
}

/* Page Faces (Front and Back) */
.face {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    backface-visibility: hidden;
    transform-style: preserve-3d;
    border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
    overflow: hidden;
    background-color: var(--bg-secondary);
    box-shadow: var(--book-shadow);
}

.face.front {
    z-index: 2;
    transform: rotateY(0deg);
}

.face.back {
    /* Flipped around its own left edge to face the left side when opened */
    transform: rotateY(180deg);
    border-radius: var(--border-radius-md) 0 0 var(--border-radius-md);
}

/* Hinge Shadow / Gradient overlay to simulate book binding depth */
.face::after {
    content: '';
    position: absolute;
    top: 0;
    width: 30px;
    height: 100%;
    z-index: 10;
    pointer-events: none;
}

.face.front::after {
    left: 0;
    background: linear-gradient(to right, rgba(0,0,0,0.25) 0%, rgba(0,0,0,0) 100%);
}

.face.back::after {
    right: 0;
    background: linear-gradient(to left, rgba(0,0,0,0.25) 0%, rgba(0,0,0,0) 100%);
}

/* Page Content Wrap */
.page-content {
    position: relative;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.image-page {
    background-color: #000;
}

.page-img {
    width: 100%;
    height: 100%;
    object-fit: fill; /* Make sure flyers fill the aspect ratio neatly */
    user-select: none;
    pointer-events: none;
}

/* Page Number */
.page-number {
    position: absolute;
    bottom: 12px;
    font-size: 0.75rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.4);
    z-index: 11;
    pointer-events: none;
    font-feature-settings: "tnum";
}

.face.front .page-number {
    right: 16px;
}

.face.back .page-number {
    left: 16px;
}

/* Tap/Hover Overlays on Pages */
.page-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0);
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    transition: background 0.3s ease, opacity 0.3s ease;
    z-index: 5;
}

.face:hover .page-overlay {
    background: rgba(0, 0, 0, 0.3);
    opacity: 1;
}

.tap-hint {
    color: white;
    background: rgba(var(--accent-red-rgb), 0.85);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    box-shadow: 0 4px 15px rgba(var(--accent-red-rgb), 0.4);
    animation: pulse 1.8s infinite;
    pointer-events: none;
    text-transform: uppercase;
    letter-spacing: 1.5px;
}

.zoom-page-btn {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.6);
    border: 1px solid rgba(255, 255, 255, 0.15);
    fill: white;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: transform 0.2s ease, background 0.2s ease;
}

.zoom-page-btn:hover {
    transform: scale(1.15);
    background: var(--accent-red);
    border-color: transparent;
}

.zoom-page-btn svg {
    width: 20px;
    height: 20px;
}

/* ==========================================================================
   HTML BACK COVER LAYOUT
   ========================================================================== */
.back-cover-page {
    background: linear-gradient(135deg, #111317 0%, #1c1f26 100%);
    color: #fff;
    padding: 30px 24px;
    height: 100%;
    width: 100%;
}

.back-cover-container {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    height: 100%;
    width: 100%;
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius-md);
    padding: 24px 20px;
    background: radial-gradient(circle at top right, rgba(var(--accent-red-rgb), 0.08), transparent 60%);
    box-shadow: inset 0 0 20px rgba(0, 0, 0, 0.3);
}

.logo-area {
    text-align: center;
}

.logo-icon {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 4px;
}

.back-logo-img {
    height: 52px;
    width: auto;
    object-fit: contain;
    filter: drop-shadow(0 0 12px rgba(var(--accent-red-rgb), 0.15));
    transition: transform 0.3s var(--transition-timing);
}

.back-logo-img:hover {
    transform: scale(1.05);
}

.back-tagline {
    font-size: 0.65rem;
    color: var(--text-secondary);
    letter-spacing: 2px;
    margin-top: 4px;
}

.services-list {
    margin: 20px 0;
}

.services-list h4, .contact-details h4 {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: var(--accent-red);
    margin-bottom: 14px;
    font-weight: 700;
}

.service-item {
    display: flex;
    align-items: center;
    margin-bottom: 12px;
    font-size: 0.85rem;
    font-weight: 500;
    color: #e2e8f0;
    transition: transform 0.2s ease;
}

.service-item:hover {
    transform: translateX(4px);
}

.service-icon {
    margin-right: 12px;
    font-size: 1.1rem;
    opacity: 0.9;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.contact-item {
    display: flex;
    align-items: center;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 400;
    padding: 8px 12px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid rgba(255, 255, 255, 0.04);
    border-radius: var(--border-radius-sm);
    transition: background 0.2s, border-color 0.2s, color 0.2s, transform 0.2s;
}

.contact-item:hover {
    background: rgba(var(--accent-red-rgb), 0.05);
    border-color: rgba(var(--accent-red-rgb), 0.3);
    color: #fff;
    transform: translateY(-2px);
}

.contact-svg {
    width: 16px;
    height: 16px;
    margin-right: 12px;
    fill: var(--accent-red);
    transition: transform 0.2s;
}

.contact-item:hover .contact-svg {
    transform: scale(1.1);
}

.back-footer {
    text-align: center;
    font-size: 0.7rem;
    color: var(--text-muted);
    letter-spacing: 1px;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 16px;
}

.footer-accent {
    color: var(--text-secondary);
    font-weight: 600;
}

/* ==========================================================================
   GLASSMORPHIC CONTROL PANEL
   ========================================================================== */
.control-panel {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border-radius: var(--border-radius-lg);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    box-shadow: 0 8px 32px var(--glass-shadow);
    backdrop-filter: blur(16px) saturate(180%);
    -webkit-backdrop-filter: blur(16px) saturate(180%);
    z-index: 100;
    user-select: none;
    transition: background 0.3s, border-color 0.3s;
    margin-top: 10px;
}

.control-btn {
    background: transparent;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: background-color 0.2s, fill 0.2s, transform 0.2s;
    outline: none;
}

.control-btn svg {
    width: 22px;
    height: 22px;
    fill: var(--text-secondary);
    transition: fill 0.2s, transform 0.2s;
}

.control-btn:hover {
    background-color: var(--bg-surface);
}

.control-btn:hover svg {
    fill: var(--text-primary);
    transform: scale(1.1);
}

.control-btn:active {
    transform: scale(0.95);
}

.control-btn.text-btn {
    width: auto;
    padding: 0 14px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    white-space: nowrap;
}

.control-btn.text-btn:hover {
    color: var(--text-primary);
}

/* Specific styling for navigation controls */
#prevBtn:hover svg {
    transform: translateX(-2px) scale(1.1);
}

#nextBtn:hover svg {
    transform: translateX(2px) scale(1.1);
}

/* Active buttons states */
.control-btn.active svg {
    fill: var(--accent-red);
    filter: drop-shadow(0 0 5px rgba(var(--accent-red-rgb), 0.5));
}

.divider {
    width: 1px;
    height: 24px;
    background-color: var(--glass-border);
    margin: 0 4px;
}

.page-indicator {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-primary);
    padding: 0 12px;
    min-width: 65px;
    text-align: center;
    font-feature-settings: "tnum";
}

/* Helper Utilities */
.hidden {
    display: none !important;
}

/* ==========================================================================
   MODALS & LIGHTBOXES (Bootstrap Integrations)
   ========================================================================== */
/* Custom Glassmorphism style for Bootstrap Modals */
.modal-content.glass {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border) !important;
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
}

/* Custom styles for Bootstrap close buttons inside glass modals */
.btn-close-white {
    opacity: 0.75;
    transition: opacity 0.2s ease, transform 0.2s ease;
}
.btn-close-white:hover {
    opacity: 1;
    transform: scale(1.1);
}

.help-grid {
    display: flex;
    flex-direction: column;
    gap: 20px;
    text-align: left;
    margin-bottom: 30px;
}

.help-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
}

.help-icon {
    font-size: 1.5rem;
    background: var(--bg-surface);
    width: 44px;
    height: 44px;
    border-radius: 12px;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-shrink: 0;
    border: 1px solid var(--glass-border);
}

.help-item strong {
    font-size: 0.95rem;
    color: var(--text-primary);
    display: block;
    margin-bottom: 2px;
}

.help-item p {
    font-size: 0.85rem;
    color: var(--text-secondary);
    line-height: 1.4;
}

kbd {
    background: var(--bg-surface);
    border: 1px solid var(--text-muted);
    border-radius: 4px;
    padding: 2px 6px;
    font-size: 0.75rem;
    font-weight: 600;
    box-shadow: 0 2px 0 var(--glass-shadow);
}

.btn-primary {
    background-color: var(--accent-red);
    color: white;
    border: none;
    padding: 12px 32px;
    font-size: 0.95rem;
    font-weight: 600;
    border-radius: 30px;
    cursor: pointer;
    box-shadow: 0 4px 20px rgba(var(--accent-red-rgb), 0.4);
    transition: background-color 0.2s, transform 0.2s, box-shadow 0.2s;
    text-transform: uppercase;
    letter-spacing: 1.5px;
    outline: none;
}

.btn-primary:hover {
    background-color: #f33f3f;
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(var(--accent-red-rgb), 0.5);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Lightbox Content */
/* Lightbox Content layout managed natively by Bootstrap fullscreen modals */

.lightbox-img-wrapper {
    flex: 1;
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0 20px;
}

.lightbox-img-wrapper img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: var(--border-radius-md);
    box-shadow: 0 10px 40px rgba(0,0,0,0.8);
    transition: transform 0.3s cubic-bezier(0.2, 0.8, 0.2, 1);
}

.lightbox-img-wrapper .back-cover-page {
    width: auto;
    height: 100%;
    aspect-ratio: 1 / 1.414;
    border-radius: var(--border-radius-md);
    max-height: 100%;
    box-shadow: 0 10px 40px rgba(0,0,0,0.8);
}

.lightbox-nav {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 3.5rem;
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    transition: background 0.2s, border-color 0.2s, transform 0.2s;
    user-select: none;
}

.lightbox-nav:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    transform: scale(1.08);
}

.lightbox-nav:active {
    transform: scale(0.95);
}

/* ==========================================================================
   ANIMATIONS
   ========================================================================== */
@keyframes pulse {
    0% {
        transform: scale(1);
        box-shadow: 0 4px 15px rgba(var(--accent-red-rgb), 0.4);
    }
    50% {
        transform: scale(1.04);
        box-shadow: 0 4px 25px rgba(var(--accent-red-rgb), 0.6);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 4px 15px rgba(var(--accent-red-rgb), 0.4);
    }
}

/* ==========================================================================
   RESPONSIVE DESIGN SYSTEM
   ========================================================================== */

/* Tablet & Smaller Screens - Adjust standard book sizes */
@media (max-width: 1024px) {
    :root {
        --page-width: 320px;
        --page-height: 452px;
    }
    
    .modal-box {
        padding: 30px 20px;
    }
}

/* Mobile Screens (Width < 768px): Unified 3D Single Page Viewport */
@media (max-width: 767px) {
    :root {
        --page-width: min(calc(100vw - 20px), calc((100vh - 150px) / 1.414));
        --page-height: calc(var(--page-width) * 1.414);
        --book-width: var(--page-width);
    }
    
    .paper {
        width: 100%;
        left: 0;
    }
    
    .face {
        border-radius: var(--border-radius-md) !important;
    }
    
    .app-container {
        padding: 10px;
    }
    
    .header-logo-wrapper {
        gap: 8px;
    }
    
    .brand-logo-img {
        height: 28px;
    }
    
    .powered-by {
        padding: 3px 8px;
        gap: 4px;
    }
    
    .powered-logo-img {
        height: 14px;
    }
    
    .powered-text {
        font-size: 0.55rem;
    }
    
    .back-logo-img {
        height: 42px;
    }
    
    .header-tagline {
        font-size: 0.7rem;
        letter-spacing: 2px;
    }

    .book-viewport {
        max-height: calc(100vh - 160px);
    }
    
    /* Control Bar mobile wrapping */
    .control-panel {
        gap: 2px;
        padding: 4px 6px;
        max-width: 100%;
    }
    
    .control-btn {
        width: 32px;
        height: 32px;
    }
    
    .control-btn.text-btn {
        width: auto;
        padding: 0 8px;
        font-size: 0.7rem;
        border-radius: 10px;
    }
    
    .control-btn svg {
        width: 18px;
        height: 18px;
    }
    
    .page-indicator {
        font-size: 0.75rem;
        min-width: 44px;
        padding: 0 2px;
    }
    
    /* Lightbox Nav controls styling for mobile */
    .lightbox-nav {
        position: absolute;
        width: 50px;
        height: 50px;
        font-size: 2.5rem;
        z-index: 10;
        background: rgba(0,0,0,0.6);
    }
    
    #lightboxPrev {
        left: 10px;
    }
    
    #lightboxNext {
        right: 10px;
    }
    
    .lightbox-img-wrapper {
        padding: 0 5px;
    }
    
    .back-cover-page {
        padding: 20px 14px;
    }
    
    .back-cover-container {
        padding: 16px 12px;
    }
    
    .services-list {
        margin: 10px 0;
    }
    
    .services-list h4, .contact-details h4 {
        margin-bottom: 8px;
    }
    
    .service-item {
        margin-bottom: 6px;
        font-size: 0.8rem;
    }
    
    .contact-details {
        gap: 6px;
    }
    
    .contact-item {
        font-size: 0.75rem;
        padding: 6px 8px;
    }
    
    .contact-svg {
        margin-right: 8px;
    }
}

/* Ultra-small screens height optimization */
@media (max-height: 600px) {
    :root {
        --page-height: 380px;
        --page-width: calc(var(--page-height) / 1.414);
    }
    
    .app-header {
        display: none;
    }
}

/* ==========================================================================
   VIDEO PLAYER MODAL STYLING
   ========================================================================== */
.play-video-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    background: rgba(2, 115, 212, 0.85); /* SmartBiz Royal Blue */
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    padding: 10px 18px;
    border-radius: 30px;
    font-size: 0.8rem;
    font-weight: 700;
    cursor: pointer;
    box-shadow: 0 6px 20px rgba(2, 115, 212, 0.3);
    transition: transform 0.2s, background 0.2s, box-shadow 0.2s;
    text-transform: uppercase;
    letter-spacing: 1px;
    backdrop-filter: blur(4px);
}

.play-video-btn:hover {
    background: rgba(2, 115, 212, 1);
    transform: scale(1.06);
    box-shadow: 0 8px 25px rgba(2, 115, 212, 0.5);
}

.play-video-btn svg {
    width: 18px;
    height: 18px;
    fill: white;
}

/* Video modal layout managed natively by Bootstrap large centered modals */

@media (max-width: 767px) {
    .play-video-btn {
        padding: 8px 14px;
        font-size: 0.7rem;
        gap: 6px;
    }
    
    .play-video-btn svg {
        width: 14px;
        height: 14px;
    }
}