:root {
    --primary-color: #FF7810;
    --primary-light: #ff9340;
    --primary-dark: #d86400;
    --text-primary: #2d3748;
    --text-secondary: #4a5568;
    --text-tertiary: #718096;
    --bg-light: #f7fafc;
    --bg-card: #ffffff;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.12), 0 1px 2px rgba(0,0,0,0.24);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.1);
    --radius-sm: 4px;
    --radius-md: 6px;
    --radius-lg: 10px;
    --transition: all 0.2s ease;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
}

.dark-mode {
    --primary-color: #FF7810;
    --primary-light: #ff9340;
    --primary-dark: #d86400;
    --text-primary: #f7fafc;
    --text-secondary: #e2e8f0;
    --text-tertiary: #cbd5e0;
    --bg-light: #1a202c;
    --bg-card: #2d3748;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.5), 0 1px 2px rgba(0,0,0,0.5);
    --shadow-md: 0 4px 6px rgba(0,0,0,0.3);
    --shadow-lg: 0 10px 15px rgba(0,0,0,0.3);
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-light);
    color: var(--text-primary);
    line-height: 1.4;
    transition: var(--transition);
    font-size: 16px;
}

.app-container {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

header {
    background-color: var(--bg-card);
    box-shadow: var(--shadow-sm);
    padding: 0.75rem 1rem;
    position: sticky;
    top: 0;
    z-index: 10;
    transition: var(--transition);
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo i {
    font-size: 1.25rem;
    color: var(--primary-color);
}

h1 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

#theme-toggle {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.1rem;
    cursor: pointer;
    transition: var(--transition);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

#theme-toggle:hover {
    background-color: rgba(0, 0, 0, 0.05);
    color: var(--primary-color);
}

.dark-mode #theme-toggle i {
    content: "\f185";
}

#google_translate_element {
    display: flex;
    align-items: center;
}

#google_translate_element .goog-te-gadget {
    font-family: var(--font-sans);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

#google_translate_element .goog-te-gadget-simple {
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-sm);
    padding: 0.25rem 0.5rem;
    background-color: var(--bg-card);
}

.dark-mode #google_translate_element .goog-te-gadget-simple {
    background-color: var(--bg-card);
    border-color: #4a5568;
}

#google_translate_element .goog-te-gadget-simple img {
    display: none;
}

#google_translate_element .goog-te-menu-value span:first-child {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

#google_translate_element .goog-te-menu-value span:last-child {
    display: none;
}

.search-container {
    max-width: 1200px;
    margin: 0.75rem auto 0;
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.search-box, .filter-box {
    position: relative;
    flex: 1;
    min-width: 180px;
}

.search-box i, .filter-box i {
    position: absolute;
    left: 0.75rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
}

#search, #category-filter {
    width: 100%;
    padding: 0.6rem 0.75rem 0.6rem 2.25rem;
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    background-color: var(--bg-card);
    color: var(--text-primary);
    transition: var(--transition);
}

#search:focus, #category-filter:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(255, 120, 16, 0.2);
}

.stats-bar {
    display: flex;
    gap: 0.75rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
    align-items: center;
}

.stat {
    background-color: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 0.5rem 0.75rem;
    flex: 1;
    min-width: 80px;
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.stat:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.stat span {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
    display: block;
    line-height: 1.2;
}

.stat p {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    font-weight: 500;
}

.reset-button {
    background-color: var(--bg-card);
    color: var(--text-secondary);
    border: none;
    border-radius: var(--radius-md);
    padding: 0.5rem 0.75rem;
    font-size: 0.8rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 0.4rem;
    box-shadow: var(--shadow-sm);
    height: 100%;
}

.reset-button:hover {
    background-color: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

main {
    flex: 1;
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
    padding: 1rem 1rem;
}

#questions-list {
    display: grid;
    gap: 0.75rem;
    grid-template-columns: 1fr;
}

.question-card {
    background-color: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 1rem;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border-left: 3px solid transparent;
    cursor: pointer;
}

.question-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.question-card.active {
    border-left-color: var(--primary-color);
}

.question-card.completed {
    border-left-color: var(--primary-color);
}

.question-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 0.5rem;
}

.question-title-wrapper {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
    flex: 1;
}

.completion-tick {
    color: var(--primary-color);
    font-size: 1rem;
    flex-shrink: 0;
    margin-top: 0.15rem;
}

.question-title {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    flex: 1;
    padding-right: 0.75rem;
}

.question-toggle {
    color: var(--primary-color);
    transition: var(--transition);
    transform-origin: center;
    font-size: 0.9rem;
    flex-shrink: 0;
    margin-top: 0.15rem;
}

.question-card.active .question-toggle {
    transform: rotate(180deg);
}

.category-badge {
    display: inline-block;
    padding: 0.2rem 0.4rem;
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--primary-dark);
    background-color: rgba(255, 120, 16, 0.1);
    border-radius: var(--radius-sm);
    margin-bottom: 0.5rem;
}

.answer {
    display: none;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
    border-top: 1px solid rgba(0, 0, 0, 0.05);
    margin-top: 0.5rem;
    padding-top: 0.5rem;
}

.question-card.active .answer {
    display: block;
    animation: fadeIn 0.3s ease;
}

#no-results {
    text-align: center;
    padding: 2rem;
    color: var(--text-tertiary);
}

#no-results i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.hidden {
    display: none;
}

footer {
    background-color: var(--bg-card);
    padding: 0.75rem;
    box-shadow: 0 -1px 3px rgba(0, 0, 0, 0.05);
    margin-top: 1rem;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.8rem;
    color: var(--text-tertiary);
}

.footer-content i {
    color: #e53e3e;
}

.footer-content a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

.footer-content a:hover {
    text-decoration: underline;
}

.form-popup {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 20;
    transition: var(--transition);
}

#open-form-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: var(--radius-lg);
    padding: 0.6rem 1rem;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

#open-form-btn:hover {
    background-color: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.form-container {
    position: absolute;
    bottom: calc(100% + 1rem);
    right: 0;
    width: 360px;
    max-height: 80vh;
    overflow-y: auto;
    background-color: var(--bg-card);
    border-radius: var(--radius-md);
    padding: 1.25rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
}

.form-open .form-container {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.form-group {
    margin-bottom: 0.9rem;
}

.form-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.4rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.6rem 0.75rem;
    border: 1px solid #e2e8f0;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    background-color: var(--bg-card);
    color: var(--text-primary);
    transition: var(--transition);
    font-family: var(--font-sans);
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(255, 120, 16, 0.2);
}

.form-group textarea {
    min-height: 100px;
    resize: vertical;
}

.dark-mode .form-group input,
.dark-mode .form-group textarea,
.dark-mode .form-group select {
    border-color: #4a5568;
    background-color: #2d3748;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 1rem;
}

.form-actions button {
    padding: 0.6rem 1rem;
    border-radius: var(--radius-md);
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

#close-form-btn {
    background-color: transparent;
    color: var(--text-secondary);
    border: 1px solid #e2e8f0;
}

.dark-mode #close-form-btn {
    border-color: #4a5568;
}

#close-form-btn:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.form-popup button[type="submit"] {
    background-color: var(--primary-color);
    color: white;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.form-popup button[type="submit"]:hover {
    background-color: var(--primary-dark);
}

.form-popup h3 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.error-message {
    text-align: center;
    padding: 2rem;
    background-color: var(--bg-card);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.error-message i {
    font-size: 2rem;
    color: #e53e3e;
    margin-bottom: 1rem;
}

.error-message p {
    color: var(--text-secondary);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive styles */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .header-controls {
        width: 100%;
        justify-content: space-between;
    }
    
    .search-container {
        flex-direction: column;
    }
    
    .search-box, .filter-box {
        width: 100%;
    }
    
    .form-container {
        width: calc(100vw - 3rem);
        left: 1.5rem;
        right: 1.5rem;
    }
    
    #open-form-btn {
        width: auto;
    }
    
    .question-title {
        font-size: 0.9rem;
    }
}

/* Print styles */
@media print {
    .app-container {
        background-color: white;
    }
    
    header, .search-container, .stats-bar, footer, .form-popup {
        display: none;
    }
    
    main {
        padding: 0;
    }
    
    .question-card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #e2e8f0;
        margin-bottom: 1rem;
    }
    
    .question-card .answer {
        display: block;
    }
    
    .question-toggle {
        display: none;
    }
}

/* Pageclip form styles */
.pageclip-form__success {
    background-color: rgba(72, 187, 120, 0.1);
    color: #2f855a;
    padding: 0.75rem;
    border-radius: var(--radius-md);
    margin-top: 1rem;
    text-align: center;
    font-size: 0.9rem;
}

.pageclip-form__submit {
    position: relative;
}

.pageclip-form__submit.pageclip-form__submitting::after {
    content: "";
    position: absolute;
    left: 0;
    right: 0;
    top: 0;
    bottom: 0;
    background-color: rgba(255, 255, 255, 0.5);
    border-radius: var(--radius-md);
}

.pageclip-form__submit.pageclip-form__submitting span {
    visibility: hidden;
}

.pageclip-form__submit.pageclip-form__submitting::before {
    content: "";
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin-top: -10px;
    margin-left: -10px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Focus styles for accessibility */
:focus-visible {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Customize scrollbar */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-light);
}

::-webkit-scrollbar-thumb {
    background: var(--text-tertiary);
    border-radius: 4px;
}

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