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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: #f8f9fa;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.container {
    background: white;
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.08);
    padding: 40px;
    width: 100%;
    max-width: 400px;
    text-align: center;
    border: 1px solid #e9ecef;
}

.logo {
    font-size: 2.5em;
    font-weight: bold;
    color: #6c757d;
    margin-bottom: 10px;
}

.subtitle {
    color: #666;
    margin-bottom: 30px;
}

.form-group {
    margin-bottom: 20px;
    text-align: left;
}

label {
    display: block;
    margin-bottom: 5px;
    color: #333;
    font-weight: 500;
}

input {
    width: 100%;
    padding: 12px;
    border: 2px solid #e1e5e9;
    border-radius: 10px;
    font-size: 16px;
    transition: border-color 0.3s;
}

input:focus {
    outline: none;
    border-color: #a8d5ba;
}

button {
    width: 100%;
    padding: 12px;
    background: #a8d5ba;
    color: #2c3e50;
    border: none;
    border-radius: 10px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

button:hover {
    background: #95c9a8;
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

.toggle-form {
    margin-top: 20px;
    color: #a8d5ba;
    cursor: pointer;
    text-decoration: underline;
}

.feed-container {
    display: none;
    max-width: 1200px;
    width: 100%;
}

.form-container {
    display: none;
}

.form-container.active {
    display: block;
}

.main-content {
    display: flex;
    gap: 30px;
    margin-top: 20px;
}

.sidebar {
    background: white;
    border-radius: 15px;
    padding: 25px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    width: 300px;
    flex-shrink: 0;
}

.sidebar h3 {
    margin-bottom: 20px;
    color: #333;
    font-size: 1.2em;
}

.category-item {
    background: white;
    border: 1px solid #e9ecef;
    border-radius: 8px;
    padding: 12px;
    margin-bottom: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.2s;
}

.category-item:hover {
    border-color: #a8d5ba;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.category-name {
    font-weight: 500;
    color: #333;
}

.delete-category {
    background: #f8d7da;
    color: #721c24;
    border: none;
    border-radius: 4px;
    padding: 2px 6px;
    font-size: 10px;
    cursor: pointer;
    transition: all 0.2s;
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 20px;
    flex-shrink: 0;
}

.delete-category:hover {
    background: #f5c6cb;
}

.add-category {
    margin-top: 20px;
}

.add-category input {
    width: 100%;
    padding: 8px;
    border: 2px solid #e1e5e9;
    border-radius: 6px;
    margin-bottom: 10px;
    font-size: 14px;
}

.add-category button {
    width: 100%;
    padding: 8px;
    background: #a8d5ba;
    color: #2c3e50;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.2s;
}

.add-category button:hover {
    background: #95c9a8;
}

.feed-content {
    flex: 1;
}

.feed-header {
    background: white;
    border-radius: 20px;
    padding: 30px;
    margin-bottom: 20px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.08);
    border: 1px solid #e9ecef;
}

.feed-item {
    background: white;
    border-radius: 20px;
    padding: 25px;
    margin-bottom: 20px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
    border: 1px solid #e9ecef;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.feed-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.12);
    border-color: #a8d5ba;
}

.feed-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #a8d5ba, #95c9a8);
    border-radius: 20px 20px 0 0;
}

.feed-title {
    font-size: 1.3em;
    font-weight: 600;
    color: #333;
    margin-bottom: 10px;
}

.feed-summary {
    color: #666;
    margin-bottom: 10px;
    line-height: 1.5;
}

.feed-meta {
    display: flex;
    justify-content: space-between;
    color: #999;
    font-size: 0.9em;
}

.logout-btn {
    background: #f8d7da;
    color: #721c24;
    margin-top: 20px;
    padding: 6px 16px;
    font-size: 0.95em;
    width: auto;
    min-width: 0;
    border-radius: 6px;
}

.logout-btn:hover {
    background: #f5c6cb;
}

.error {
    color: #721c24;
    margin-top: 10px;
    font-size: 0.9em;
}

.success {
    color: #155724;
    margin-top: 10px;
    font-size: 0.9em;
}

.feed-card-text {
    color: #333;
    font-size: 1.05em;
    line-height: 1.5;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 5;
    -webkit-box-orient: vertical;
    overflow: hidden;
    text-overflow: ellipsis;
    transition: max-height 0.3s;
}

.feed-card-text.expanded {
    -webkit-line-clamp: unset;
    max-height: 1000em;
    overflow: visible;
}

.feed-card-more {
    color: #a8d5ba;
    cursor: pointer;
    font-size: 0.95em;
    font-weight: 500;
    margin-bottom: 8px;
    display: inline-block;
}

.reddit-card {
    background: #fff;
    border: 1.5px solid #ff4500;
    border-radius: 16px;
    padding: 22px 22px 16px 22px;
    margin-bottom: 18px;
    box-shadow: 0 2px 8px rgba(255,69,0,0.08);
    transition: box-shadow 0.2s;
}

.reddit-card:hover {
    box-shadow: 0 6px 24px rgba(255,69,0,0.13);
    border-color: #ff6a1a;
}

.reddit-card .reddit-title {
    font-size: 1.15em;
    font-weight: 400;
    color: #ff4500;
    margin-bottom: 8px;
}

.reddit-card .reddit-top-comment {
    color: #333;
    font-size: 1em;
    margin-bottom: 10px;
}

.reddit-card .reddit-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.95em;
    color: #888;
    margin-top: 8px;
}

.reddit-card a {
    color: #ff4500;
    text-decoration: none;
    font-weight: 500;
}

.reddit-card a:hover {
    text-decoration: underline;
}

.reddit-card .reddit-post-content {
    color: #333;
    font-size: 1em;
    line-height: 1.5;
    margin: 12px 0;
    padding: 12px;
    background: #f8f9fa;
    border-radius: 8px;
    border-left: 3px solid #ff4500;
    word-wrap: break-word;
    overflow-wrap: break-word;
}

/* AI Summary Banner Styles */
.ai-summary-banner {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 20px;
    padding: 25px;
    margin-bottom: 20px;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.15);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: white;
    position: relative;
    overflow: hidden;
}

.ai-summary-banner::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.1) 0%, rgba(255, 255, 255, 0.05) 100%);
    pointer-events: none;
}

.ai-summary-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
    position: relative;
    z-index: 1;
}

.ai-summary-title {
    font-size: 1.3em;
    font-weight: 600;
}

.ai-summary-controls {
    display: flex;
    gap: 8px;
}

.ai-summary-content {
    position: relative;
    z-index: 1;
}

.ai-summary-content.collapsed {
    display: none;
}

.ai-summary-text {
    font-size: 1.05em;
    line-height: 1.6;
    margin-bottom: 15px;
    white-space: pre-line; /* Preserve line breaks */
}

.ai-summary-text br {
    margin-bottom: 8px; /* Add space after line breaks */
}

.ai-summary-meta {
    font-size: 0.9em;
    opacity: 0.9;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 10px;
}

.ai-summary-banner button {
    transition: all 0.2s;
}

.ai-summary-banner button:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}