:root {
    --bg-main: #F7F8FC;
    --bg-card: #FFFFFF;
    --text-primary: #1F2937;
    --text-secondary: #6B7280;
    --primary: #26A3BF;
    --primary-light: #36D9D9;
    --accent-green: #34D399;
    --accent-red: #F2A7D0;
    --accent-yellow: #F2C53D;
}
body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-main);
    color: var(--text-primary);
}
.font-balsamiq {
    font-family: 'Balsamiq Sans', cursive;
}

/* Main App Structure */
#app-container {
    display: flex;
    flex-direction: column;
    height: 100vh;
    max-width: 500px;
    margin: auto;
    background-color: white;
    box-shadow: 0 10px 40px rgba(0,0,0,0.05);
    overflow: hidden; /* Prevent body scroll */
    position: relative;
}
main {
    flex-grow: 1;
    overflow-y: auto;
    padding: 1.5rem;
    position: relative;
    /* Add padding to the bottom to prevent content from being hidden by the nav bar */
    padding-bottom: 80px;
}

/* Bottom Navigation */
#bottom-nav {
    display: flex;
    justify-content: space-around;
    padding: 0.5rem 0;
    border-top: 1px solid #E5E7EB;
    background-color: var(--bg-card);
    transition: transform 0.3s ease-in-out;
    position: fixed; /* Changed to fixed for overlay behavior */
    bottom: 0;
    left: 0;
    right: 0;
    max-width: 500px;
    margin: auto;
    z-index: 30;
}
#bottom-nav.hide {
    transform: translateY(100%);
}
.nav-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    color: var(--text-secondary);
    transition: color 0.2s, transform 0.2s;
    padding: 0.5rem;
    cursor: pointer;
}
.nav-btn svg {
    width: 28px;
    height: 28px;
    stroke-width: 2;
}
.nav-btn.active {
    color: var(--primary);
    transform: scale(1.05);
}

/* Section Transitions */
.page-section {
    display: none;
    animation: fadeIn 0.5s ease-in-out;
}
.page-section.active {
    display: block;
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Custom Card Style */
.custom-card {
    background-color: var(--bg-card);
    border-radius: 1.5rem;
    box-shadow: 0 8px 16px rgba(149, 157, 165, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
    overflow: hidden;
}
.custom-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 24px rgba(149, 157, 165, 0.15);
}

/* Modal & Feedback */
.modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0,0,0,0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 50;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s, visibility 0.3s;
}
.modal-overlay.visible {
    opacity: 1;
    visibility: visible;
}
.modal-content {
    background-color: var(--bg-card);
    padding: 2rem;
    border-radius: 2rem;
    text-align: center;
    transform: scale(0.9);
    transition: transform 0.3s;
}
.modal-overlay.visible .modal-content {
    transform: scale(1);
}

/* Recording Button */
.record-btn.recording {
    animation: pulse 2.0s infinite;
}
@keyframes pulse {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(242, 167, 208, 0.7); }
    70% { transform: scale(1.1); box-shadow: 0 0 0 20px rgba(242, 167, 208, 0); }
    100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(242, 167, 208, 0); }
}

/* Confetti Animation */
.confetti {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    pointer-events: none;
    z-index: 100;
}
.confetti-piece {
    position: absolute;
    width: 10px;
    height: 20px;
    background: var(--accent-yellow);
    top: -50px;
    opacity: 0;
}
.confetti-piece:nth-child(2) { background: var(--accent-green); }
.confetti-piece:nth-child(3) { background: var(--primary-light); }
.confetti-piece:nth-child(4) { background: var(--accent-red); }

/* Custom Dropdown */
.custom-dropdown-options {
    display: none;
    position: absolute;
    background-color: white;
    width: 100%;
    border-radius: 1rem;
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
    z-index: 10;
    max-height: 300px; /* Increased height */
    overflow-y: auto;
    border: 1px solid #eee;
    transform: translateY(4px);
}
.custom-dropdown-options.show {
    display: block;
}
.custom-dropdown-option {
    padding: 1rem 1.25rem; /* Increased padding */
    cursor: pointer;
    transition: background-color 0.2s;
    font-weight: 600; /* Bolder font */
    font-size: 1.125rem; /* Larger font size */
}
.custom-dropdown-option:hover {
    background-color: #f3f4f6;
}

/* Language Toggle */
.lang-toggle-btn {
    background-color: #E5E7EB;
    color: var(--text-secondary);
    transition: background-color 0.2s, color 0.2s;
}
.lang-toggle-btn.active {
    background-color: var(--primary);
    color: white;
}

/* Loading Spinner */
#loading-spinner {
    border: 8px solid #f3f3f3;
    border-top: 8px solid var(--primary);
    border-radius: 50%;
    width: 60px;
    height: 60px;
    animation: spin 1s linear infinite;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Horizontal Scroll for Story Topics */
#story-topics-container {
    display: flex;
    overflow-x: auto;
    padding-bottom: 1rem; /* Space for scrollbar */
    scrollbar-width: none; /* Firefox */
}
#story-topics-container::-webkit-scrollbar {
    display: none; /* Safari and Chrome */
}
#story-topics-container .topic-button {
    flex-shrink: 0;
    width: 140px;
}

/* Side Panel */
#side-panel-overlay {
    transition: opacity 0.3s ease-in-out;
}
#side-panel {
    transition: transform 0.3s ease-in-out;
}
.side-panel-link {
    display: flex;
    align-items: center;
    padding: 0.75rem 1.5rem;
    gap: 0.75rem;
    color: var(--text-secondary);
    font-weight: 600;
    transition: background-color 0.2s, color 0.2s;
    border-radius: 0.75rem;
}
.side-panel-link:hover {
    background-color: #f3f4f6;
}
.side-panel-link.active {
    background-color: var(--primary-light);
    color: white;
}
.side-panel-link svg {
    width: 28px;
    height: 28px;
}


/* Pack Game */
.game-info {
    background-color: var(--primary-light);
    color: white;
    padding: 0.5rem 1rem;
    font-family: 'Balsamiq Sans', cursive;
    text-align: center;
    border-radius: 1rem;
    margin: 0 auto 1rem;
    max-width: 200px;
}
.draggable {
    cursor: grab;
    transition: transform 0.2s;
}
.dragging {
    opacity: 0.5;
    cursor: grabbing;
}
#suitcase.drag-over {
    border: 4px dashed var(--primary-light);
}

.shake {
    animation: shake 0.5s;
}
@keyframes shake {
    0% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    50% { transform: translateX(5px); }
    75% { transform: translateX(-5px); }
    100% { transform: translateX(0); }
}
.glow {
    animation: glow 1s;
}
@keyframes glow {
    0% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.7); }
    50% { box-shadow: 0 0 20px 10px rgba(52, 211, 153, 0.7); }
    100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0); }
}
.swoosh {
    animation: swoosh 0.5s forwards;
}
@keyframes swoosh {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(0.1) translate(200px, -200px); opacity: 0; }
}

/* Splash Screen */
#splash-screen {
    transition: opacity 0.5s ease-out;
}
#splash-screen.fade-out {
    opacity: 0;
}
#splash-video {
    max-width: 100vw;
    max-height: 100vh;
    width: auto;
    height: auto;
    object-fit: contain;
}

/* Reward Animation */
#reward-animation img {
    animation: wave 2s ease-in-out infinite;
}

@keyframes wave {
    0% { transform: rotate(0deg); }
    50% { transform: rotate(20deg); }
    100% { transform: rotate(0deg); }
}

/* --- ✨ ADD THIS NEW CODE TO style.css --- */

/* This container crops the view, hiding the items that are off-screen */
#conveyor-container {
    overflow: hidden;
    width: 100%;
}

#conveyor-belt {
    display: flex; /* Arranges items in a single row */
    flex-wrap: nowrap; /* Prevents items from wrapping to a new line, solving truncation */
    width: fit-content; /* Makes the belt exactly as wide as its content */
    will-change: transform;
    /* These properties link the element to our CSS animation */
    animation-name: scroll;
    animation-timing-function: linear;
    animation-iteration-count: infinite;
}

/* This defines the animation itself */
@keyframes scroll {
    0% {
        transform: translateX(0);
    }
    100% {
        /* Moves the belt left by exactly 50% of its total width.
          Since we duplicated the content, this means the first set of items
          has moved completely off-screen, and the second set is perfectly
          in its place, creating a seamless loop.
        */
        transform: translateX(-50%);
    }
}