:root {
    --forum-primary: #3B82F6;
    --forum-secondary: #6B7280;
    --forum-bg: #F3F4F6;
    --forum-card-bg: #FFFFFF;
    --forum-border: #E5E7EB;
    --forum-text: #111827;
}

.lms-forum-container {
    max-width: 1200px;
    margin: 40px auto;
    font-family: 'Figtree', -apple-system, BlinkMacSystemFont, sans-serif;
    color: var(--forum-text);
}

/* Header */
.lms-forum-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    background: linear-gradient(135deg, #1e3a8a, #3b82f6);
    padding: 40px;
    border-radius: 16px;
    color: white;
}
.forum-title h1 { margin: 0; font-size: 32px; color: white; }
.forum-title p { margin: 5px 0 0 0; opacity: 0.9; font-size: 16px; }

.forum-actions { display: flex; gap: 15px; }
.forum-search { position: relative; }
.forum-search input {
    padding: 12px 40px 12px 15px;
    border-radius: 99px;
    border: none;
    width: 250px;
    font-size: 14px;
}
.forum-search button {
    position: absolute;
    right: 5px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: #666;
    cursor: pointer;
}

/* Buttons */
.lms-btn { padding: 12px 24px; border-radius: 99px; font-weight: 600; cursor: pointer; border: none; transition: all 0.2s; font-size: 14px; text-decoration: none; display: inline-block; }
.lms-btn-primary { background: white; color: #1e3a8a; }
.lms-btn-primary:hover { background: #f0f9ff; }
.lms-btn-secondary { background: rgba(255,255,255,0.2); color: white; border: 1px solid rgba(255,255,255,0.3); }

/* Layout */
.lms-forum-layout { display: grid; grid-template-columns: 250px 1fr; gap: 30px; }

/* Sidebar */
.lms-forum-sidebar { background: white; padding: 20px; border-radius: 12px; border: 1px solid var(--forum-border); height: fit-content; }
.lms-forum-sidebar h3 { font-size: 14px; text-transform: uppercase; color: var(--forum-secondary); margin-top: 0; margin-bottom: 15px; border-bottom: 1px solid var(--forum-border); padding-bottom: 10px; }
#lms-forum-cat-list { list-style: none; padding: 0; margin: 0; }
#lms-forum-cat-list li { margin-bottom: 5px; }
#lms-forum-cat-list a {
    display: block;
    padding: 10px 15px;
    border-radius: 8px;
    color: var(--forum-text);
    text-decoration: none;
    font-weight: 500;
    transition: background 0.2s;
}
#lms-forum-cat-list a:hover, #lms-forum-cat-list a.active { background: #EFF6FF; color: var(--forum-primary); }
#lms-forum-cat-list i { margin-right: 10px; width: 20px; text-align: center; }

/* Feed & Cards */
.lms-topic-card {
    background: white;
    border: 1px solid var(--forum-border);
    border-radius: 12px;
    padding: 25px;
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    transition: transform 0.2s, box-shadow 0.2s;
}
.lms-topic-card:hover { transform: translateY(-3px); box-shadow: 0 10px 25px rgba(0,0,0,0.05); }

.topic-avatar img { border-radius: 50%; width: 50px; height: 50px; object-fit: cover; }
.topic-main { flex-grow: 1; }
.topic-meta { font-size: 12px; color: var(--forum-secondary); margin-bottom: 8px; display: flex; align-items: center; gap: 10px; }
.topic-cat { background: #EEF2FF; color: #4F46E5; padding: 2px 8px; border-radius: 4px; font-weight: 600; }
.topic-solved-badge { color: #059669; font-weight: 600; display: flex; align-items: center; gap: 4px; }

.topic-title { margin: 0 0 8px 0; font-size: 18px; }
.topic-title a { color: var(--forum-text); text-decoration: none; }
.topic-title a:hover { color: var(--forum-primary); }
.topic-excerpt { font-size: 14px; color: #4B5563; line-height: 1.5; }

.topic-stats { display: flex; flex-direction: column; gap: 10px; align-items: center; justify-content: center; min-width: 60px; border-left: 1px solid var(--forum-border); padding-left: 20px; color: var(--forum-secondary); }
.stat-item { font-size: 14px; display: flex; align-items: center; gap: 5px; }

/* Modal */
.lms-forum-modal { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0,0,0,0.5); z-index: 10000; display: flex; justify-content: center; align-items: center; backdrop-filter: blur(4px); }
.lms-modal-content { background: white; width: 90%; max-width: 600px; padding: 30px; border-radius: 16px; box-shadow: 0 20px 50px rgba(0,0,0,0.2); position: relative; }
.lms-modal-close { position: absolute; top: 20px; right: 20px; font-size: 24px; cursor: pointer; color: #9CA3AF; }
.lms-modal-content h3 { margin-top: 0; margin-bottom: 20px; }

.form-group { margin-bottom: 20px; }
.form-group label { display: block; font-weight: 600; margin-bottom: 8px; font-size: 14px; }
.form-group input, .form-group select, .form-group textarea {
    width: 100%; padding: 12px; border: 1px solid var(--forum-border); border-radius: 8px; font-family: inherit; font-size: 15px;
}
.lms-no-topics { text-align: center; padding: 50px; color: var(--forum-secondary); background: white; border-radius: 12px; border: 1px dashed var(--forum-border); }