/* Base styles */
:root {
    --color-primary: #6E59A5;
    --color-primary-light: #8B75C5;
    --color-primary-dark: #513F7E;
    --color-secondary: #0EA5E9;
    --color-accent: #F97316;
    --color-text: #333333;
    --color-text-light: #666666;
    --color-background: #FFFFFF;
    --color-background-alt: #F8F9FD;
    --color-border: #E4E7EE;
    --color-correct: #10B981;
    --color-incorrect: #EF4444;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 12px;
    --transition-speed: 0.3s;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', sans-serif;
    color: var(--color-text);
    background-color: var(--color-background);
    line-height: 1.4;
    font-size: small;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-speed);
}

a:hover {
    color: var(--color-primary-dark);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.glassy-box {
    background-color: rgba(224, 210, 252, 0.795);
    border-radius: 10px;
    padding: 10px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
}

.glassy-box-alerts {
    background-color: rgba(0, 0, 0, 0.623);
    border-radius: 10px;
    padding: 20px;
    width: 90%;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
}

.cool-input {
    padding: 12px 16px;
    font-size: 16px;
    border: 2px solid transparent;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
    color: #fff;
    outline: none;
    transition: all 0.3s ease;
    width: 100%;
    max-width: 300px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.cool-input::placeholder {
    color: #ccc;
}

.cool-input:focus {
    border-color: #00bcd4;
    background: rgba(255, 255, 255, 0.2);
    box-shadow: 0 0 0 3px rgba(0, 188, 212, 0.3);
}


/* Button styles */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
    border-radius: var(--border-radius-md);
    transition: all var(--transition-speed);
    cursor: pointer;
    border: none;
    font-family: inherit;
    padding: 0.5rem 1.5rem;
}

.btn-primary {
    background-color: var(--color-primary);
    color: white;
}

.btn-primary:hover {
    background-color: var(--color-primary-dark);
}

.btn-outline {
    background-color: transparent;
    border: 1px solid var(--color-primary);
    color: var(--color-primary);
}

.btn-outline:hover {
    background-color: var(--color-primary);
    color: white;
}

.btn-text {
    background-color: transparent;
    color: var(--color-primary);
    padding: 0.5rem;
}

.btn-text:hover {
    background-color: rgba(110, 89, 165, 0.1);
}

.btn-icon {
    background-color: transparent;
    padding: 0.3rem;
    border-radius: 50%;
}

.btn-icon:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.btn svg {
    margin-right: 0.5rem;
}

/* Cookie notice */
.cookie-notice {
    position: fixed;
    bottom: 0;
    left: 0;
    width: 100%;
    background-color: var(--color-background);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    padding: 1rem 0;
    z-index: 1000;
    transform: translateY(100%);
    transition: transform var(--transition-speed);
}

.cookie-notice.show {
    transform: translateY(0);
}

.cookie-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

.cookie-content p {
    flex: 1;
    font-size: 0.9rem;
}

.filter-btn {
    background-color: transparent;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    font-size: small;
    padding: 0.2rem 0.4rem 0.2rem 0.4rem;
    cursor: pointer;
    transition: all var(--transition-speed);
}

.filter-btn.active,
.filter-btn:hover {
    background-color: var(--color-primary);
    color: white;
    border-color: var(--color-primary);
}

/* Main content */
main {
    min-height: calc(100vh - 74px - 300px);
    padding: 1rem 0;
}

.dashboard {
    background-color: #00000028;
}

/* Page system */
.page {
    display: none;
}

.page.active {
    display: block;
    animation: fadeIn var(--transition-speed);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

/* Home page */
.hero {
    text-align: center;
    padding-top: 0;
    padding-bottom: 1.5rem;
}

.hero h2 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cat-text {
    font-size: 1rem;
    margin-bottom: 7px;
    font-weight: bold;
    line-height: 1.2;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cat-button {
    font-size: 0.9rem;
    margin: 7px;
    font-weight: bold;
    line-height: 1.2;
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-sm);
    padding: 0.2rem 1rem 0.2rem 1rem;
    background: linear-gradient(90deg, var(--color-primary) 0%, var(--color-secondary) 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero p {
    font-size: 1.1rem;
    color: var(--color-text-light);
    max-width: 600px;
    margin: 0 auto 1rem;
}

.cta-buttons {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
}

.category-section,
.features-section {
    padding: 0.5rem 0;
}

.category-section h3,
.features-section h3 {
    text-align: center;
    margin-bottom: 1rem;
    font-size: 1.8rem;
}

.categories,
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 2fr));
    gap: 0.5rem;
}

.category-card {
    background-color: var(--color-background);
    border-radius: var(--border-radius-lg);
    padding: 1rem;
    box-shadow: var(--shadow-md);
    text-align: center;
    cursor: pointer;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.category-icon,
.feature-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.category-card h4,
.feature h4 {
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.feature {
    text-align: center;
    padding: 1.5rem;
}

/* Quizzes page */
.breadcrumb {
    margin-bottom: 0.1rem;
    display: flex;
    align-items: center;
    font-size: 0.9rem;
}

.breadcrumb span {
    margin: 0 0.2rem;
}

.breadcrumb span:first-child {
    margin-left: 0;
}

.view {
    display: none;
}

.view.active {
    display: block;
    animation: fadeIn var(--transition-speed);
}

.quiz-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.quiz-card {
    background-color: var(--color-background);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: transform var(--transition-speed), box-shadow var(--transition-speed);
    cursor: pointer;
}

.quiz-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.quiz-card-inner {
    padding: 0.5rem;
}

.quiz-card-icon {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--color-primary);
}

.quiz-card h3 {
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

.quiz-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.quiz-progress {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.progress-bar {
    width: 200px;
    height: 8px;
    background-color: var(--color-border);
    border-radius: 4px;
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background-color: var(--color-primary);
    width: 0%;
    transition: width var(--transition-speed);
}

.quiz-container {
    background-color: var(--color-background);
    border-radius: var(--border-radius-lg);
    padding: 0.5rem;
    box-shadow: var(--shadow-md);
    margin-bottom: 1rem;
}

.question-container {
    gap: 0.2rem;
    margin-bottom: 0.5rem;
}

.options-container {
    display: grid;
    gap: 0.2rem;
    margin-bottom: 1rem;
}

.option {
    padding: 0.3rem 0.5rem;
    font-size: 1rem;
    background-color: var(--color-background-alt);
    border: 1px solid var(--color-border);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-speed);
}

.option:hover {
    border-color: var(--color-primary-light);
}

.option.selected {
    border-color: var(--color-primary);
    background-color: rgba(110, 89, 165, 0.1);
}

.option.correct {
    border-color: var(--color-correct);
    background-color: rgba(16, 185, 129, 0.1);
}

.option.incorrect {
    border-color: var(--color-incorrect);
    background-color: rgba(239, 68, 68, 0.1);
}

.quiz-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.audio-container {
    margin-bottom: 0.5rem;
    text-align: center;
}

.explanation-panel {
    background-color: var(--color-background);
    border-radius: var(--border-radius-lg);
    padding: 1rem;
    box-shadow: var(--shadow-md);
    display: none;
}

.explanation-panel.show {
    display: block;
    animation: slideUp var(--transition-speed);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

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

.explanation-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

/* To-top */
#backToTop {
    position: fixed;
    bottom: 24px;
    right: 24px;
    display: none;
    z-index: 1000;
    background-color: var(--color-primary);
    color: white;
    border: none;
    border-radius: 10%;
    width: 32px;
    height: 32px;
    font-size: 16px;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
    transition: opacity 0.3s ease;
}

#backToTop:hover {
    background-color: var(--color-primary-dark);
}

/* Toast */
.toast-container {
    visibility: hidden;
    min-width: 250px;
    margin-left: -125px;
    background-color: #333;
    color: #fff;
    text-align: center;
    border-radius: 2px;
    padding: 16px;
    position: fixed;
    z-index: 1;
    left: 50%;
    bottom: 30px;
}

.toast-container.show {
    visibility: visible;
    -webkit-animation: fadein 0.5s, fadeout 2s 1s;
    animation: fadein 0.5s, fadeout 2s 1s;
}

@-webkit-keyframes fadein {
    from {
        bottom: 0;
        opacity: 0;
    }

    to {
        bottom: 30px;
        opacity: 1;
    }
}

@keyframes fadein {
    from {
        bottom: 0;
        opacity: 0;
    }

    to {
        bottom: 30px;
        opacity: 1;
    }
}

@-webkit-keyframes fadeout {
    from {
        bottom: 30px;
        opacity: 1;
    }

    to {
        bottom: 0;
        opacity: 0;
    }
}

@keyframes fadeout {
    from {
        bottom: 30px;
        opacity: 1;
    }

    to {
        bottom: 0;
        opacity: 0;
    }
}

/* Responsive styles */
@media (max-width: 768px) {
    .hero h2 {
        font-size: 1.7rem;
    }

    .cta-buttons {
        flex-direction: column;
        gap: 0.5rem;
    }

    .quiz-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }

    .quiz-progress {
        width: 100%;
    }

    .progress-bar {
        flex: 1;
    }

    .cookie-content {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 576px) {
    header .container {
        flex-wrap: wrap;
        gap: 1rem;
    }

    nav {
        order: 3;
        width: 100%;
    }

    nav ul {
        justify-content: space-between;
    }

    .footer-content {
        flex-direction: column;
    }

    .option {
        padding: 0.3rem 0.5rem;
        font-size: 0.6rem;
    }

    .btn {
        padding: 0.5rem 1.5rem;
    }
}