/* Q&A Forum - Main Stylesheet */

/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --light-bg: #f8f9fa;
    --dark-text: #212529;
    --border-color: #dee2e6;
    --shadow: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-lg: 0 4px 6px rgba(0,0,0,0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--dark-text);
    background-color: #fff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
.main-header {
    background-color: #fff;
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo a {
    text-decoration: none;
    color: var(--primary-color);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex: 1;
    justify-content: center;
}

.main-nav a {
    text-decoration: none;
    color: var(--dark-text);
    font-weight: 500;
    transition: color 0.3s;
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--primary-color);
}

.search-form {
    display: flex;
    gap: 0.5rem;
}

.search-form input {
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    min-width: 200px;
}

.search-form button {
    padding: 0.5rem 1rem;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

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

.user-link {
    text-decoration: none;
    color: var(--dark-text);
    font-weight: 500;
}

/* Dropdown */
.dropdown {
    position: relative;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    padding-top: 0.5rem;
    margin-top: 0;
    z-index: 100;
}

.dropdown:hover .dropdown-menu,
.dropdown-menu:hover {
    display: block;
}

.dropdown-menu a {
    display: block;
    padding: 0.75rem 1rem;
    text-decoration: none;
    color: var(--dark-text);
}

.dropdown-menu a:hover {
    background-color: var(--light-bg);
}

/* Buttons */
.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 1rem;
    text-decoration: none;
    display: inline-block;
    transition: all 0.3s;
    font-weight: 500;
}

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

.btn-primary:hover {
    background-color: #0056b3;
}

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

.btn-secondary:hover {
    background-color: #5a6268;
}

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

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

.btn-block {
    width: 100%;
}

.btn-small {
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
}

/* Main Content */
.main-content {
    min-height: calc(100vh - 200px);
    padding: 2rem 0;
}

/* Page Header */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.page-header h2 {
    font-size: 2rem;
    color: var(--dark-text);
}

/* Questions List */
.questions-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.question-item {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    transition: box-shadow 0.3s;
}

.question-item:hover {
    box-shadow: var(--shadow-lg);
}

.question-item h3 {
    margin-bottom: 0.5rem;
}

.question-item h3 a {
    color: var(--primary-color);
    text-decoration: none;
}

.question-item h3 a:hover {
    text-decoration: underline;
}

.question-meta {
    display: flex;
    gap: 1rem;
    margin-top: 0.75rem;
    font-size: 0.875rem;
    color: var(--secondary-color);
    flex-wrap: wrap;
}

.question-stats {
    display: flex;
    gap: 1rem;
    margin-top: 0.5rem;
}

.stat {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* Question View */
.question-view {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.question-view h2 {
    margin-bottom: 1rem;
    color: var(--dark-text);
}

.question-content {
    margin: 1.5rem 0;
    line-height: 1.8;
}

.question-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1.5rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 1rem;
}

/* Voting */
.vote-section {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
}

.vote-btn {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 0.5rem;
    cursor: pointer;
    font-size: 1.25rem;
    transition: all 0.3s;
    min-width: 40px;
}

.vote-btn:hover {
    background-color: var(--light-bg);
}

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

.vote-count {
    font-weight: 600;
    font-size: 1.125rem;
}

/* Answers Section */
.answers-section {
    margin-top: 2rem;
}

.answers-section h3 {
    margin-bottom: 1.5rem;
}

.answers-list {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.answer-item {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    position: relative;
}

.answer-item.best-answer {
    border: 2px solid var(--success-color);
    background-color: #f0fff4;
}

.answer-item.best-answer::before {
    content: '✓ Best Answer';
    position: absolute;
    top: -1px;
    right: -1px;
    background-color: var(--success-color);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 0 8px 0 8px;
    font-size: 0.75rem;
    font-weight: 600;
}

.answer-content {
    margin: 1rem 0;
    line-height: 1.8;
}

.answer-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    flex-wrap: wrap;
    gap: 1rem;
}

/* Comments */
.comments-section {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.comments-list {
    margin-top: 1rem;
}

.comment-item {
    padding: 0.75rem;
    margin-bottom: 0.5rem;
    background-color: var(--light-bg);
    border-radius: 4px;
}

.comment-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
}

.comment-content {
    color: var(--dark-text);
}

.comment-form {
    margin-top: 1rem;
}

.comment-form textarea {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    resize: vertical;
    min-height: 80px;
}

/* Forms */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    font-size: 1rem;
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

textarea.form-control {
    resize: vertical;
    min-height: 120px;
}

.form-text {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: var(--secondary-color);
}

.form-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.form-message {
    margin-top: 1rem;
    padding: 0.75rem;
    border-radius: 4px;
}

.form-message.success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-message.error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* Auth Pages */
.auth-page {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
}

.auth-container {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--shadow-lg);
}

.auth-container h2 {
    margin-bottom: 1.5rem;
    text-align: center;
}

.auth-form {
    width: 100%;
}

.auth-links {
    margin-top: 1rem;
    text-align: center;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.auth-links a {
    color: var(--primary-color);
    text-decoration: none;
}

.auth-links a:hover {
    text-decoration: underline;
}

/* Profile Page */
.profile-page {
    max-width: 1000px;
    margin: 0 auto;
}

.profile-header {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    margin-bottom: 2rem;
}

.profile-header h2 {
    margin-bottom: 1.5rem;
}

.profile-stats {
    display: flex;
    gap: 2rem;
    flex-wrap: wrap;
}

.stat-item {
    text-align: center;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.stat-label {
    font-size: 0.875rem;
    color: var(--secondary-color);
    margin-top: 0.25rem;
}

.profile-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.profile-section {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
}

.profile-section h3 {
    margin-bottom: 1rem;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.pagination a,
.pagination span {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    text-decoration: none;
    color: var(--dark-text);
}

.pagination a:hover {
    background-color: var(--light-bg);
}

.pagination .active {
    background-color: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.pagination .disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.5rem;
    font-size: 0.75rem;
    font-weight: 600;
    border-radius: 4px;
}

.badge-success {
    background-color: var(--success-color);
    color: white;
}

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

/* Loading */
.loading {
    text-align: center;
    padding: 2rem;
    color: var(--secondary-color);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 3rem;
    color: var(--secondary-color);
}

/* Footer */
.main-footer {
    background-color: var(--light-bg);
    border-top: 1px solid var(--border-color);
    padding: 2rem 0;
    margin-top: 3rem;
    text-align: center;
    color: var(--secondary-color);
}

/* Ask Question Page */
.ask-question-page {
    max-width: 800px;
    margin: 0 auto;
}

.ask-question-page h2 {
    margin-bottom: 2rem;
    font-size: 2rem;
    color: var(--dark-text);
}

.question-form {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    box-shadow: var(--shadow);
}

/* Answer Form */
.answer-form-section {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1.5rem;
    margin-top: 2rem;
}

.answer-form-section h4 {
    margin-bottom: 1rem;
}

.answer-form textarea {
    width: 100%;
    min-height: 150px;
    margin-bottom: 1rem;
}

.login-prompt {
    text-align: center;
    padding: 2rem;
    background: var(--light-bg);
    border-radius: 8px;
    margin-top: 2rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        align-items: stretch;
    }
    
    .main-nav {
        flex-direction: column;
        align-items: stretch;
        gap: 0.5rem;
    }
    
    .search-form {
        width: 100%;
    }
    
    .search-form input {
        flex: 1;
    }
    
    .user-menu {
        justify-content: center;
    }
    
    .page-header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .question-footer,
    .answer-footer {
        flex-direction: column;
        align-items: stretch;
    }
    
    .vote-section {
        flex-direction: row;
    }
    
    .profile-stats {
        justify-content: center;
    }
    
    .profile-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 10px;
    }
    
    .question-item,
    .answer-item,
    .question-view {
        padding: 1rem;
    }
    
    .auth-container {
        padding: 1.5rem;
    }
}

/* Search Highlighting */
mark {
    background-color: #ffeb3b;
    color: var(--dark-text);
    padding: 2px 4px;
    border-radius: 2px;
    font-weight: 500;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.text-muted {
    color: var(--secondary-color);
}

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }