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

:root {
    --primary-color: #2563eb;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-color: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
    box-shadow: var(--shadow);
}

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

header h1 {
    font-size: 1.75rem;
    color: var(--primary-color);
}

.auth-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

#userInfo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

#userName {
    font-weight: 500;
    color: var(--text-color);
}

/* Buttons */
.btn-primary, .btn-secondary {
    padding: 0.5rem 1.25rem;
    border: none;
    border-radius: 0.375rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

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

.btn-primary:hover {
    background-color: #1d4ed8;
}

.btn-primary:disabled {
    background-color: var(--text-muted);
    cursor: not-allowed;
}

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

.btn-secondary:hover {
    background-color: #475569;
}

/* Map Section */
.map-section {
    background: var(--card-bg);
    margin-top: 2rem;
    padding: 2rem 0;
    border-radius: 0.5rem;
    box-shadow: var(--shadow);
}

.map-controls {
    margin-bottom: 1rem;
}

.map-controls h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.map-filters {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    background: white;
    border-radius: 0.375rem;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.875rem;
}

.filter-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

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

#map {
    height: 500px;
    border-radius: 0.5rem;
    margin: 1rem 0;
    border: 1px solid var(--border-color);
}

.map-legend {
    display: flex;
    gap: 2rem;
    padding: 1rem;
    background: var(--bg-color);
    border-radius: 0.375rem;
    margin-top: 1rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
}

.marker {
    width: 16px;
    height: 16px;
    border-radius: 50%;
    display: inline-block;
}

.marker.validated {
    background-color: var(--success-color);
}

.marker.pending {
    background-color: var(--warning-color);
}

.marker.dump-station {
    background-color: var(--primary-color);
}

/* Forum Section */
.forum-section {
    margin-top: 3rem;
    margin-bottom: 3rem;
}

.forum-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.forum-header h2 {
    font-size: 1.75rem;
}

.forum-controls {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    flex-wrap: wrap;
}

.search-input {
    flex: 1;
    min-width: 300px;
    padding: 0.625rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    font-size: 0.875rem;
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

.sort-select, .filter-select {
    padding: 0.625rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    background: white;
    cursor: pointer;
    font-size: 0.875rem;
}

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

.thread-item {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: var(--shadow);
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid var(--border-color);
}

.thread-item:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-2px);
}

.thread-header {
    display: flex;
    justify-content: space-between;
    align-items: start;
    margin-bottom: 0.75rem;
}

.thread-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-color);
    margin-bottom: 0.5rem;
}

.thread-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    flex-wrap: wrap;
}

.author {
    font-weight: 500;
    color: var(--primary-color);
}

.thread-stats {
    display: flex;
    gap: 2rem;
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 1rem;
}

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

.category {
    background: var(--bg-color);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 500;
}

.loading {
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
}

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

.page-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    background: white;
    border-radius: 0.375rem;
    cursor: pointer;
}

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

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

/* Modals */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    overflow-y: auto;
}

.modal-content {
    background-color: var(--card-bg);
    margin: 3% auto;
    padding: 2rem;
    border-radius: 0.5rem;
    max-width: 900px;
    width: 90%;
    box-shadow: var(--shadow-lg);
}

.modal-content.small {
    max-width: 500px;
}

.close {
    color: var(--text-muted);
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close:hover {
    color: var(--text-color);
}

/* Thread Modal */
.thread-header-modal {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

#threadTitle {
    font-size: 1.5rem;
    margin-bottom: 0.75rem;
}

.thread-body {
    margin-bottom: 2rem;
    line-height: 1.8;
}

.thread-rating {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    padding: 1rem;
    background: var(--bg-color);
    border-radius: 0.375rem;
}

.vote-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    background: white;
    border-radius: 0.375rem;
    cursor: pointer;
    font-weight: 500;
}

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

/* Replies */
.replies-section {
    margin-top: 2rem;
}

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

#repliesList {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.reply-item {
    background: var(--bg-color);
    padding: 1rem;
    border-radius: 0.375rem;
    border-left: 3px solid var(--primary-color);
}

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

.reply-body {
    line-height: 1.6;
}

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

#replyText {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    resize: vertical;
    font-family: inherit;
    margin-bottom: 1rem;
}

.login-prompt {
    text-align: center;
    padding: 2rem;
    background: var(--bg-color);
    border-radius: 0.375rem;
    color: var(--text-muted);
}

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

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

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="password"],
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    font-family: inherit;
    font-size: 0.875rem;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.trial-notice {
    margin-top: 1rem;
    text-align: center;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Google Sign-In Button */
.google-signin-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    padding: 0.75rem 1.5rem;
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: 0.375rem;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--text-color);
    cursor: pointer;
    transition: all 0.2s;
}

.google-signin-btn:hover {
    background-color: var(--bg-color);
    box-shadow: var(--shadow);
}

.google-signin-btn svg {
    flex-shrink: 0;
}

/* Login Divider */
.login-divider {
    display: flex;
    align-items: center;
    text-align: center;
    margin: 1.5rem 0;
}

.login-divider::before,
.login-divider::after {
    content: '';
    flex: 1;
    border-bottom: 1px solid var(--border-color);
}

.login-divider span {
    padding: 0 1rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 1rem;
    }

    .forum-controls {
        flex-direction: column;
    }

    .search-input {
        min-width: 100%;
    }

    #map {
        height: 350px;
    }

    .map-legend {
        flex-direction: column;
        gap: 0.5rem;
    }
}