:root {
    --bg-color: #0d1117;
    --card-bg: rgba(22, 27, 34, 0.8);
    --text-color: #e6edf3;
    --accent-color: #58a6ff;
    --secondary-text: #8b949e;
    --border-color: #30363d;
    --success-color: #238636;
    --danger-color: #da3633;
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-family);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
}

h1 {
    font-size: 1.5rem;
    font-weight: 600;
    background: linear-gradient(135deg, #fff 0%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

nav {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
    background: var(--card-bg);
    padding: 5px;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.nav-btn {
    flex: 1;
    padding: 10px;
    background: transparent;
    border: none;
    color: var(--secondary-text);
    cursor: pointer;
    border-radius: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.nav-btn.active {
    background: var(--accent-color);
    color: white;
}

/* Glassmorphism Cards */
.card {
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 20px;
    margin-bottom: 15px;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    box-shadow: 0 8px 24px rgba(0,0,0,0.5);
}

.kb-item .question {
    font-weight: 600;
    color: var(--accent-color);
    margin-bottom: 8px;
}

.kb-item .answer {
    font-size: 0.95rem;
    color: var(--text-color);
    white-space: pre-wrap;
}

.kb-item .category {
    font-size: 0.75rem;
    display: inline-block;
    padding: 2px 8px;
    background: #1f242c;
    border-radius: 12px;
    color: var(--secondary-text);
    margin-bottom: 10px;
}

/* Form Elements */
textarea {
    width: 100%;
    background: #0d1117;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-color);
    padding: 10px;
    margin-top: 10px;
    font-family: inherit;
    resize: vertical;
    min-height: 100px;
}

.btn {
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    transition: opacity 0.2s;
}

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

.btn-save {
    background: var(--success-color);
    color: white;
    margin-top: 10px;
}

.actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    margin-top: 15px;
}

/* Search bar */
.search-container {
    margin-bottom: 20px;
}

.search-input {
    width: 100%;
    padding: 12px 15px;
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    color: var(--text-color);
    font-size: 1rem;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.3s ease-out forwards;
}

/* Loader */
.loader {
    display: flex;
    justify-content: center;
    padding: 40px;
}
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--accent-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}
@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.report-text {
    font-family: 'Courier New', Courier, monospace;
    font-size: 0.9rem;
    padding: 15px;
    background: #090c10;
    border-radius: 8px;
    border: 1px solid var(--border-color);
    white-space: pre-wrap;
}