assets/style.css

/* assets/style.css */
/* Custom CSS for TriviaVerse Enhanced */

/* Import Google Fonts */
@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600;700&display=swap');

/* Global Variables */
:root {
    --primary-color: #4CAF50;
    --secondary-color: #45a049;
    --background-color: #ffffff;
    --text-color: #262730;
    --border-radius: 12px;
    --transition: all 0.3s ease;
}

/* Dark mode variables */
[data-theme="dark"] {
    --primary-color: #00D4FF;
    --secondary-color: #00a8cc;
    --background-color: #0E1117;
    --text-color: #FAFAFA;
}

/* Global Styles */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--background-color);
}

/* Smooth scrolling */
html {
    scroll-behavior: smooth;
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.1);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }

    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(1.05);
    }

    100% {
        transform: scale(1);
    }
}

@keyframes shimmer {
    0% {
        background-position: -200px 0;
    }

    100% {
        background-position: calc(200px + 100%) 0;
    }
}

/* Utility Classes */
.fade-in {
    animation: fadeIn 0.5s ease-out forwards;
}

.slide-in-left {
    animation: slideInLeft 0.5s ease-out forwards;
}

.pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* Loading skeleton */
.skeleton {
    background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
    background-size: 200px 100%;
    animation: shimmer 1.5s ease-in-out infinite;
}

/* Card hover effects */
.hover-lift {
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.hover-lift:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

/* Flashcard Component */
.flashcard-container {
    perspective: 1000px;
    min-height: 300px;
    cursor: pointer;
}

.flashcard {
    width: 100%;
    min-height: 300px;
    border-radius: 20px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    transition: transform 0.6s;
    transform-style: preserve-3d;
}

.flashcard.front {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.flashcard.back {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.flashcard p {
    font-size: 1.2rem;
}

.flip-instruction {
    margin-top: 30px;
    opacity: 0.8;
    font-style: italic;
}

/* Responsive Typography */
h1 {
    font-size: clamp(1.5rem, 4vw, 2.5rem);
    font-weight: 700;
}

h2 {
    font-size: clamp(1.25rem, 3vw, 2rem);
    font-weight: 600;
}

h3 {
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    font-weight: 600;
}

p {
    font-size: clamp(0.9rem, 2vw, 1.1rem);
}

/* Mobile-first responsive design */
@media (max-width: 768px) {

    /* Mobile styles */
    .main .block-container {
        padding: 1rem 0.5rem !important;
        max-width: 100% !important;
    }

    /* Stack columns on mobile */
    .row-widget.stHorizontal {
        flex-direction: column !important;
    }

    .row-widget.stHorizontal>div {
        width: 100% !important;
        margin-bottom: 1rem;
    }

    /* Full-width buttons on mobile */
    .stButton>button {
        width: 100% !important;
        min-height: 50px;
        font-size: 16px !important;
    }

    /* Larger touch targets */
    .stRadio>div>label {
        padding: 15px !important;
        margin: 5px 0 !important;
    }

    /* Responsive cards */
    .card {
        padding: 15px !important;
        margin: 10px 0 !important;
    }

    /* Hide sidebar by default on mobile */
    section[data-testid="stSidebar"] {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }

    section[data-testid="stSidebar"][aria-expanded="true"] {
        transform: translateX(0);
    }

    /* Adjust font sizes for mobile */
    .score-display {
        font-size: 24px !important;
    }

    /* Responsive quiz container */
    .quiz-container {
        padding: 20px !important;
        margin: 15px 0 !important;
    }
}

/* Tablet styles */
@media (min-width: 769px) and (max-width: 1024px) {
    .main .block-container {
        max-width: 95%;
        padding: 2rem 1rem;
    }

    .row-widget.stHorizontal>div {
        flex: 1;
    }
}

/* Desktop styles */
@media (min-width: 1025px) {
    .main .block-container {
        max-width: 1200px;
        padding: 3rem 2rem;
    }
}

/* Print styles */
@media print {

    .stButton,
    section[data-testid="stSidebar"],
    .stRadio {
        display: none !important;
    }

    .main {
        padding: 0 !important;
    }

    .card {
        break-inside: avoid;
        page-break-inside: avoid;
    }
}

/* Accessibility improvements */
.stButton>button:focus,
.stRadio>div>label:focus {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    :root {
        --primary-color: #00AA00;
        --background-color: #000000;
        --text-color: #FFFFFF;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Custom tooltip */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltiptext {
    visibility: hidden;
    width: 200px;
    background-color: #555;
    color: #fff;
    text-align: center;
    border-radius: 6px;
    padding: 5px;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -100px;
    opacity: 0;
    transition: opacity 0.3s;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}