@charset "UTF-8";

/* ==========================================================================
   Design Tokens & Resets
   ========================================================================== */
:root {
    --bg-color: #fafafa;
    --surface-color: #ffffff;
    --surface-hover: #f1f5f9;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --accent-color: #111827; /* Dark elegant for contrast in light mode */
    --accent-hover: #334155;
    
    --shadow-sm: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -1px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    
    --radius-md: 50%; /* Flags will be round */
    --radius-lg: 20px;
    
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.5;
    overflow-x: hidden;
    min-height: 100vh;
}

/* ==========================================================================
   Layout & Scaffolding
   ========================================================================== */
#app {
    max-width: 600px;
    margin: 0 auto;
    padding: 2rem 1.5rem;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    display: flex;
    justify-content: center;
    margin-bottom: 2.5rem;
}

/* Rectangular Logo */
.logo-container {
    width: 260px; /* Adjusted width */
    max-width: 100%;
    /* remove forced height to let the image dictate aspect ratio, or set a proportional height */
    overflow: hidden;
    /* remove border-radius 50% to make it rectangular */
    border-radius: 0; /* No rounded corners */
    box-shadow: var(--shadow-sm);
    animation: scale-in 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

#logo {
    width: 100%;
    height: auto;
    display: block;
    object-fit: contain;
}

h1 {
    font-size: 2rem;
    font-weight: 600;
    text-align: center;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

.subtitle {
    text-align: center;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    font-size: 1.1rem;
    font-weight: 300;
}

#view-container {
    flex: 1;
    position: relative;
}

.view {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    opacity: 0;
    visibility: hidden;
    transform: translateX(20px);
    transition: opacity var(--transition-smooth), transform var(--transition-smooth), visibility var(--transition-smooth);
}

.view.active {
    opacity: 1;
    visibility: visible;
    transform: translateX(0);
    position: relative;
}

.view.exit {
    transform: translateX(-20px);
}

/* ==========================================================================
   Language View (Flags)
   ========================================================================== */
.flag-grid {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1.5rem;
    max-width: 320px;
    margin: 0 auto;
}

/* Small elegant round buttons */
.lang-btn {
    background: transparent;
    border: none;
    border-radius: var(--radius-md); /* 50% for perfect circle */
    padding: 0;
    width: 65px;
    height: 65px;
    cursor: pointer;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast), box-shadow var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Stretch the rectangular flag images to fill their circular container */
.lang-btn img {
    width: 100%;
    height: 100%;
    object-fit: cover; /* Important: makes flags fill the circle nicely */
    transition: transform var(--transition-fast);
}

.lang-btn:hover, .lang-btn:active {
    transform: translateY(-4px) scale(1.05);
    box-shadow: var(--shadow-md);
}

/* ==========================================================================
   Category View
   ========================================================================== */
.nav-bar {
    display: flex;
    margin-bottom: 2rem;
}

.icon-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.1rem;
    font-family: inherit;
    font-weight: 500;
    cursor: pointer;
    padding: 0.5rem 1rem 0.5rem 0;
    transition: color var(--transition-fast);
}

.icon-btn svg {
    width: 22px;
    height: 22px;
}

.icon-btn:hover, .icon-btn:active {
    color: var(--accent-color);
}

/* Push to center */
#choose-menu-text {
    margin-bottom: 2.5rem;
}

.category-options {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
    max-width: 400px;
    margin: 0 auto;
}

.menu-btn {
    background: var(--surface-color);
    border: 1px solid rgba(0, 0, 0, 0.04);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    display: flex;
    align-items: center;
    gap: 1.5rem;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-fast);
    position: relative;
    overflow: hidden;
}

.menu-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--accent-color);
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.menu-btn:hover, .menu-btn:active {
    background: var(--surface-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.menu-btn:hover::before, .menu-btn:active::before {
    opacity: 1;
}

.menu-icon {
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.03);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px; /* For the emojis */
}

.menu-btn span {
    font-family: inherit;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* ==========================================================================
   PDF Viewer Overlay
   ========================================================================== */
#pdf-viewer-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    height: 100dvh; /* Dynamic viewport height for mobile browsers */
    background-color: var(--bg-color);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    opacity: 1;
    transition: opacity var(--transition-smooth), transform var(--transition-smooth);
}

#pdf-viewer-overlay.hidden {
    opacity: 0;
    transform: translateY(20px);
    pointer-events: none;
}

.pdf-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 1.5rem;
    background-color: var(--surface-color);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    margin-bottom: 0;
}

.pdf-header h2 {
    font-size: 1.1rem;
    font-weight: 500;
    text-align: center;
    flex: 1;
    color: var(--text-primary);
}

.pdf-container {
    flex: 1;
    width: 100%;
    background-color: #f1f5f9;
    overflow: hidden;
}

#pdf-iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* ==========================================================================
   Integrated PDF Viewer
   ========================================================================== */
#pdf-view {
    display: flex;
    flex-direction: column;
    /* Move out of the main container constraints to span full width */
    position: fixed;
    top: 0;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    width: 100vw;
    max-width: 600px; /* still constrain to 600px for desktop to look good */
    height: 100vh;
    height: 100dvh;
    background: var(--bg-color);
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--transition-smooth), transform var(--transition-smooth), visibility var(--transition-smooth);
}

#pdf-view.active {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

#pdf-view.exit {
    transform: translateX(-50%) translateY(20px);
}

/* Make it sticky and compact */
.pdf-topbar {
    background: var(--surface-color);
    padding: 0.5rem;
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: row; /* Single line */
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    border-bottom: 1px solid rgba(0,0,0,0.04);
    position: sticky;
    top: 0;
    z-index: 50;
    width: 100%;
}

#pdf-back-btn {
    padding: 0.25rem;
    background: transparent;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

#pdf-back-btn svg {
    width: 20px;
    height: 20px;
}

.pdf-category-toggle {
    display: flex;
    background: var(--bg-color);
    border-radius: 20px;
    padding: 2px;
    gap: 2px;
    flex-shrink: 1;
}

.toggle-btn {
    background: transparent;
    border: none;
    padding: 0.25rem 0.6rem;
    border-radius: 18px;
    font-family: inherit;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.25rem;
    white-space: nowrap;
}

.toggle-btn.active {
    background: var(--surface-color);
    color: var(--text-primary);
    box-shadow: var(--shadow-sm);
}

/* Small adjustments to hide text on extremely small screens if necessary */
@media (max-width: 380px) {
    .toggle-text {
        display: none;
    }
}

.pdf-flags-row {
    display: flex;
    justify-content: center;
    gap: 0.25rem;
    flex-shrink: 0;
}

.mini-lang-btn {
    width: 26px;
    height: 26px;
    border-radius: 50%;
    border: none;
    padding: 0;
    cursor: pointer;
    overflow: hidden;
    opacity: 0.5;
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.mini-lang-btn.active {
    opacity: 1;
    transform: scale(1.1);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--accent-color);
}

.mini-lang-btn img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

#pdf-render-container {
    flex: 1;
    background: #e2e8f0; /* darker background behind pages to delineate them */
    overflow-y: auto;
    overflow-x: hidden;
    padding: 0; /* Remove padding to make it full width */
    width: 100%;
    position: relative;
    -webkit-overflow-scrolling: touch;
}

#pdf-pages {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

.pdf-page-canvas {
    max-width: 100%;
    width: 100% !important; /* Force to stretch full width of screen */
    height: auto !important; /* Maintain aspect ratio */
    display: block;
    border-bottom: 4px solid #cbd5e1; /* Visual separator between pages */
}

#pdf-loader, #pdf-error {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
    color: var(--text-secondary);
    font-weight: 500;
    width: 80%;
}

#pdf-error {
    color: var(--danger-color);
}

.hidden {
    display: none !important;
}

/* ==========================================================================
   Animations
   ========================================================================== */
@keyframes scale-in {
    0% { transform: scale(0.95); opacity: 0; }
    100% { transform: scale(1); opacity: 1; }
}

.fade-in-up {
    opacity: 0;
    transform: translateY(15px);
    animation: fade-in-up 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes fade-in-up {
    100% { opacity: 1; transform: translateY(0); }
}