/**
 * KVLTX PDF Showcase - Frontend Styles
 * A design-focused PDF viewer for hotel welcome guides
 */

/* CSS Custom Properties */
:root {
    --kvltx-bg-color: #f8f9fa;
    --kvltx-accent-color: #2c3e50;
    --kvltx-pdf-height: 80vh;
    --kvltx-shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.08);
    --kvltx-shadow-md: 0 4px 20px rgba(0, 0, 0, 0.12);
    --kvltx-shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.15);
    --kvltx-radius: 12px;
    --kvltx-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========================================
   Desktop/Mobile Visibility
   ======================================== */

/* Default: Show desktop, hide mobile */
.kvltx-desktop-only {
    display: block;
}

.kvltx-mobile-only {
    display: none;
}

/* Mobile breakpoint (phones only - 576px and below): Hide desktop, show mobile */
/* iPads and tablets get the full desktop PDF embed experience */
@media screen and (max-width: 576px) {
    .kvltx-desktop-only {
        display: none !important;
    }
    
    .kvltx-mobile-only {
        display: block !important;
    }
}

/* ========================================
   Main Container
   ======================================== */

.kvltx-pdf-showcase {
    background-color: var(--kvltx-bg-color);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    padding: 0;
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    position: relative;
    overflow-x: hidden;
}

/* ========================================
   Branding Section
   ======================================== */

.kvltx-pdf-branding {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 20px;
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.kvltx-pdf-branding-logo {
    max-height: 48px;
    width: auto;
    object-fit: contain;
}

.kvltx-pdf-branding-text {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--kvltx-accent-color);
    letter-spacing: 0.5px;
}

/* ========================================
   Header Section
   ======================================== */

.kvltx-pdf-header {
    text-align: center;
    padding: 60px 24px 40px;
    max-width: 800px;
    margin: 0 auto;
}

.kvltx-pdf-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 700;
    color: var(--kvltx-accent-color);
    margin: 0 0 16px;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.kvltx-pdf-subtitle {
    font-size: clamp(1rem, 2.5vw, 1.25rem);
    color: #6c757d;
    margin: 0;
    line-height: 1.6;
    font-weight: 400;
}

/* ========================================
   PDF Container (Desktop)
   ======================================== */

.kvltx-pdf-container {
    flex: 1;
    display: flex;
    justify-content: center;
    padding: 0 24px 40px;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    box-sizing: border-box;
}

.kvltx-pdf-wrapper {
    width: 100%;
    position: relative;
    background: #ffffff;
    border-radius: var(--kvltx-radius);
    box-shadow: var(--kvltx-shadow-lg);
    overflow: hidden;
    transition: var(--kvltx-transition);
}

.kvltx-pdf-wrapper:hover {
    box-shadow: 0 12px 50px rgba(0, 0, 0, 0.18);
}

.kvltx-pdf-embed {
    width: 100%;
    height: var(--kvltx-pdf-height);
    border: none;
    display: block;
    background: #ffffff;
}

/* Loading State */
.kvltx-pdf-loading {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 16px;
    background: #ffffff;
    z-index: 10;
    opacity: 1;
    transition: opacity 0.4s ease;
    pointer-events: none;
}

.kvltx-pdf-loading.hidden {
    opacity: 0;
}

.kvltx-pdf-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid #e9ecef;
    border-top-color: var(--kvltx-accent-color);
    border-radius: 50%;
    animation: kvltx-spin 0.8s linear infinite;
}

@keyframes kvltx-spin {
    to {
        transform: rotate(360deg);
    }
}

.kvltx-pdf-loading span {
    font-size: 0.9375rem;
    color: #6c757d;
    font-weight: 500;
}

/* ========================================
   Mobile Preview Container
   ======================================== */

.kvltx-pdf-mobile-container {
    padding: 0 16px 24px;
}

.kvltx-pdf-mobile-preview {
    position: relative;
    background: #ffffff;
    border-radius: 16px;
    box-shadow: var(--kvltx-shadow-lg);
    overflow: hidden;
    margin-bottom: 16px;
}

/* PDF Object/Embed for preview */
.kvltx-pdf-mobile-object,
.kvltx-pdf-mobile-embed-fallback {
    width: 100%;
    height: 50vh;
    min-height: 350px;
    max-height: 500px;
    display: block;
    border: none;
    background: #f8f9fa;
}

/* Tap overlay on top of preview */
.kvltx-pdf-mobile-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0) 0%,
        rgba(0, 0, 0, 0) 50%,
        rgba(0, 0, 0, 0.6) 100%
    );
    display: flex;
    align-items: flex-end;
    justify-content: center;
    text-decoration: none;
    padding-bottom: 24px;
    transition: var(--kvltx-transition);
}

.kvltx-pdf-mobile-overlay:active {
    background: linear-gradient(
        to bottom,
        rgba(0, 0, 0, 0.1) 0%,
        rgba(0, 0, 0, 0.2) 50%,
        rgba(0, 0, 0, 0.7) 100%
    );
}

.kvltx-pdf-mobile-overlay-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: #ffffff;
}

.kvltx-pdf-tap-icon {
    width: 56px;
    height: 56px;
    background: rgba(255, 255, 255, 0.2);
    backdrop-filter: blur(10px);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid rgba(255, 255, 255, 0.5);
}

.kvltx-pdf-tap-text {
    font-size: 1rem;
    font-weight: 600;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.3);
}

/* Mobile action buttons */
.kvltx-pdf-mobile-buttons {
    display: flex;
    flex-direction: row;
    gap: 12px;
}

.kvltx-pdf-view-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 16px;
    background: var(--kvltx-accent-color);
    color: #ffffff;
    text-decoration: none;
    border-radius: 12px;
    font-size: 0.9375rem;
    font-weight: 600;
    transition: var(--kvltx-transition);
    box-shadow: var(--kvltx-shadow-sm);
}

.kvltx-pdf-view-btn:hover,
.kvltx-pdf-view-btn:active {
    box-shadow: var(--kvltx-shadow-md);
    color: #ffffff;
    opacity: 0.95;
}

.kvltx-pdf-save-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 16px;
    background: transparent;
    color: var(--kvltx-accent-color);
    text-decoration: none;
    border: 2px solid var(--kvltx-accent-color);
    border-radius: 12px;
    font-size: 0.9375rem;
    font-weight: 600;
    transition: var(--kvltx-transition);
}

.kvltx-pdf-save-btn:hover,
.kvltx-pdf-save-btn:active {
    background: var(--kvltx-accent-color);
    color: #ffffff;
}

/* ========================================
   Actions Section (Desktop)
   ======================================== */

.kvltx-pdf-actions {
    display: flex;
    justify-content: center;
    padding: 24px;
    gap: 16px;
}

.kvltx-pdf-download-btn {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 14px 28px;
    background: var(--kvltx-accent-color);
    color: #ffffff;
    text-decoration: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    transition: var(--kvltx-transition);
    box-shadow: var(--kvltx-shadow-sm);
    border: none;
    cursor: pointer;
}

.kvltx-pdf-download-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--kvltx-shadow-md);
    opacity: 0.9;
    color: #ffffff;
}

.kvltx-pdf-download-btn:active {
    transform: translateY(0);
}

.kvltx-pdf-download-btn svg {
    flex-shrink: 0;
}

/* ========================================
   Footer Section
   ======================================== */

.kvltx-pdf-footer {
    text-align: center;
    padding: 40px 24px 60px;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.02), transparent);
}

.kvltx-pdf-footer-text {
    font-size: 1.125rem;
    color: #6c757d;
    margin: 0;
    font-style: italic;
}

/* ========================================
   Layout Variations
   ======================================== */

/* Hero Layout (default) - Full height, centered */
.kvltx-pdf-layout-hero {
    min-height: 100vh;
}

.kvltx-pdf-layout-hero .kvltx-pdf-header {
    padding-top: 80px;
}

/* Minimal Layout - Compact, less padding */
.kvltx-pdf-layout-minimal {
    min-height: auto;
}

.kvltx-pdf-layout-minimal .kvltx-pdf-header {
    padding: 40px 24px 24px;
}

.kvltx-pdf-layout-minimal .kvltx-pdf-title {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
}

.kvltx-pdf-layout-minimal .kvltx-pdf-footer {
    padding: 24px;
}

/* Fullscreen Layout - PDF takes maximum space */
.kvltx-pdf-layout-fullscreen {
    padding: 0;
}

.kvltx-pdf-layout-fullscreen .kvltx-pdf-header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 20;
    background: linear-gradient(to bottom, rgba(255, 255, 255, 0.95), transparent);
    padding: 30px 24px 60px;
}

.kvltx-pdf-layout-fullscreen .kvltx-pdf-container {
    padding: 0;
    max-width: none;
}

.kvltx-pdf-layout-fullscreen .kvltx-pdf-wrapper {
    border-radius: 0;
    box-shadow: none;
}

.kvltx-pdf-layout-fullscreen .kvltx-pdf-embed {
    height: 100vh;
}

.kvltx-pdf-layout-fullscreen .kvltx-pdf-actions {
    position: fixed;
    bottom: 24px;
    right: 24px;
    left: auto;
    z-index: 30;
}

.kvltx-pdf-layout-fullscreen .kvltx-pdf-footer {
    display: none;
}

/* Elegant Layout - Card style with decorative elements */
.kvltx-pdf-layout-elegant {
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
}

.kvltx-pdf-layout-elegant::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 300px;
    background: linear-gradient(180deg, var(--kvltx-accent-color) 0%, transparent 100%);
    opacity: 0.05;
    pointer-events: none;
}

.kvltx-pdf-layout-elegant .kvltx-pdf-header {
    padding-top: 80px;
}

.kvltx-pdf-layout-elegant .kvltx-pdf-title {
    position: relative;
}

.kvltx-pdf-layout-elegant .kvltx-pdf-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: var(--kvltx-accent-color);
    margin: 24px auto 0;
    border-radius: 2px;
}

.kvltx-pdf-layout-elegant .kvltx-pdf-wrapper {
    border: 1px solid rgba(0, 0, 0, 0.08);
}

/* ========================================
   Notice for Missing PDF
   ======================================== */

.kvltx-pdf-showcase-notice {
    padding: 40px;
    text-align: center;
    background: #fff3cd;
    color: #856404;
    border-radius: var(--kvltx-radius);
    margin: 24px;
    font-size: 1rem;
}

/* ========================================
   Tablet Responsive Styles (iPads get full PDF embed)
   ======================================== */

@media screen and (max-width: 1024px) {
    .kvltx-pdf-container {
        padding: 0 20px 32px;
    }
    
    .kvltx-pdf-header {
        padding: 48px 20px 32px;
    }
    
    .kvltx-pdf-embed {
        height: 70vh;
    }
}

@media screen and (max-width: 768px) {
    .kvltx-pdf-showcase {
        min-height: auto;
    }
    
    .kvltx-pdf-header {
        padding: 32px 16px 24px;
    }
    
    .kvltx-pdf-title {
        font-size: 2rem;
        line-height: 1.3;
    }
    
    .kvltx-pdf-subtitle {
        font-size: 1rem;
    }
    
    .kvltx-pdf-container {
        padding: 0 16px 24px;
    }
    
    .kvltx-pdf-embed {
        height: 65vh;
    }
    
    .kvltx-pdf-footer {
        padding: 24px 16px 40px;
    }
    
    .kvltx-pdf-footer-text {
        font-size: 1rem;
    }
    
    .kvltx-pdf-branding {
        gap: 10px;
        padding: 16px;
    }
    
    .kvltx-pdf-branding-logo {
        max-height: 40px;
    }
    
    .kvltx-pdf-branding-text {
        font-size: 1rem;
    }
    
    .kvltx-pdf-download-btn {
        padding: 12px 24px;
        font-size: 0.9375rem;
    }
    
    /* Layout adjustments for tablets */
    .kvltx-pdf-layout-hero {
        min-height: auto;
    }
    
    .kvltx-pdf-layout-hero .kvltx-pdf-header {
        padding-top: 40px;
    }
    
    .kvltx-pdf-layout-fullscreen .kvltx-pdf-header {
        padding: 24px 16px 50px;
    }
    
    .kvltx-pdf-layout-fullscreen .kvltx-pdf-embed {
        height: 85vh;
    }
    
    .kvltx-pdf-layout-elegant::before {
        height: 200px;
    }
}

/* ========================================
   Phone Responsive Styles (576px and below - gets mobile preview)
   ======================================== */

@media screen and (max-width: 576px) {
    .kvltx-pdf-header {
        padding: 24px 16px 20px;
    }
    
    .kvltx-pdf-title {
        font-size: 1.625rem;
    }
    
    .kvltx-pdf-subtitle {
        font-size: 0.9375rem;
    }
    
    .kvltx-pdf-branding {
        flex-direction: column;
        gap: 8px;
    }
    
    /* Mobile preview styles */
    .kvltx-pdf-mobile-container {
        padding: 0 16px 20px;
    }
    
    .kvltx-pdf-mobile-preview {
        border-radius: 12px;
    }
    
    .kvltx-pdf-mobile-object,
    .kvltx-pdf-mobile-embed-fallback {
        height: 50vh;
        min-height: 320px;
        max-height: 450px;
    }
    
    .kvltx-pdf-mobile-buttons {
        flex-direction: row;
        gap: 10px;
    }
    
    .kvltx-pdf-view-btn,
    .kvltx-pdf-save-btn {
        padding: 14px 16px;
        font-size: 0.9375rem;
        border-radius: 10px;
    }
    
    .kvltx-pdf-footer {
        padding: 20px 16px 32px;
    }
    
    .kvltx-pdf-layout-hero .kvltx-pdf-header {
        padding-top: 24px;
    }
    
    .kvltx-pdf-layout-fullscreen .kvltx-pdf-header {
        position: relative;
        background: transparent;
        padding: 20px 16px;
    }
}

/* Extra small phones */
@media screen and (max-width: 380px) {
    .kvltx-pdf-header {
        padding: 20px 12px 16px;
    }
    
    .kvltx-pdf-title {
        font-size: 1.375rem;
    }
    
    .kvltx-pdf-subtitle {
        font-size: 0.875rem;
    }
    
    .kvltx-pdf-mobile-container {
        padding: 0 12px 16px;
    }
    
    .kvltx-pdf-mobile-object,
    .kvltx-pdf-mobile-embed-fallback {
        height: 45vh;
        min-height: 280px;
        max-height: 380px;
    }
    
    .kvltx-pdf-tap-icon {
        width: 48px;
        height: 48px;
    }
    
    .kvltx-pdf-tap-icon svg {
        width: 24px;
        height: 24px;
    }
    
    .kvltx-pdf-tap-text {
        font-size: 0.875rem;
    }
    
    .kvltx-pdf-mobile-buttons {
        flex-direction: column;
        gap: 8px;
    }
    
    .kvltx-pdf-view-btn,
    .kvltx-pdf-save-btn {
        padding: 12px 16px;
        font-size: 0.875rem;
    }
    
    .kvltx-pdf-footer {
        padding: 16px 12px 28px;
    }
}

/* ========================================
   Print Styles
   ======================================== */

@media print {
    .kvltx-pdf-showcase {
        background: none;
        min-height: auto;
    }
    
    .kvltx-pdf-actions,
    .kvltx-pdf-loading,
    .kvltx-pdf-mobile-container,
    .kvltx-pdf-mobile-buttons {
        display: none !important;
    }
    
    .kvltx-pdf-wrapper {
        box-shadow: none;
        border: 1px solid #dee2e6;
    }
    
    .kvltx-pdf-embed {
        height: auto;
        min-height: 600px;
    }
    
    .kvltx-desktop-only {
        display: block !important;
    }
    
    .kvltx-mobile-only {
        display: none !important;
    }
}

/* ========================================
   Accessibility - Reduced Motion
   ======================================== */

@media (prefers-reduced-motion: reduce) {
    .kvltx-pdf-spinner {
        animation: none;
    }
    
    .kvltx-pdf-download-btn,
    .kvltx-pdf-view-btn,
    .kvltx-pdf-save-btn,
    .kvltx-pdf-wrapper,
    .kvltx-pdf-loading {
        transition: none;
    }
}

/* ========================================
   Dark Mode Support
   ======================================== */

@media (prefers-color-scheme: dark) {
    .kvltx-pdf-showcase[data-theme="auto"] {
        --kvltx-bg-color: #1a1a2e;
        --kvltx-accent-color: #e94560;
    }
    
    .kvltx-pdf-showcase[data-theme="auto"] .kvltx-pdf-title {
        color: #ffffff;
    }
    
    .kvltx-pdf-showcase[data-theme="auto"] .kvltx-pdf-subtitle,
    .kvltx-pdf-showcase[data-theme="auto"] .kvltx-pdf-footer-text,
    .kvltx-pdf-showcase[data-theme="auto"] .kvltx-pdf-mobile-text {
        color: #a0a0a0;
    }
    
    .kvltx-pdf-showcase[data-theme="auto"] .kvltx-pdf-branding {
        background: rgba(30, 30, 50, 0.9);
        border-color: rgba(255, 255, 255, 0.1);
    }
    
    .kvltx-pdf-showcase[data-theme="auto"] .kvltx-pdf-mobile-card {
        background: #2a2a3e;
    }
}