@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&display=swap');

/* Main CSS Variables for Light / Dark themes */
:root {
    --bg-primary: #f8fafc;
    --bg-card: #ffffff;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --accent-color: #6366f1; /* Premium Indigo */
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #4f46e5 100%);
    --hover-gradient: linear-gradient(135deg, #4f46e5 0%, #3730a3 100%);
    --border-color: #e2e8f0;
    --chat-bot-bg: #f1f5f9;
    --chat-user-bg: #e0e7ff;
    --shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05), 0 8px 10px -6px rgba(0, 0, 0, 0.05);
}

.armstrong-ai-container.dark-mode {
    --bg-primary: #0f172a;
    --bg-card: #1e293b;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --border-color: #334155;
    --chat-bot-bg: #334155;
    --chat-user-bg: #312e81;
    --shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 10px 10px -10px rgba(0, 0, 0, 0.3);
}

.armstrong-ai-container {
    font-family: 'Outfit', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    padding: 20px;
    border-radius: 16px;
    transition: background-color 0.3s ease, color 0.3s ease;
    max-width: 900px;
    margin: 20px auto;
}

.armstrong-ai-card {
    background-color: var(--bg-card);
    border-radius: 12px;
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: background-color 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

/* Header style with a modern gradient */
.armstrong-ai-header {
    background: var(--accent-gradient);
    color: #ffffff;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.armstrong-ai-header h2 {
    margin: 0;
    font-size: 22px;
    font-weight: 600;
    color: #fff;
    letter-spacing: -0.5px;
}

.btn-theme-toggle {
    background: rgba(255, 255, 255, 0.15);
    border: none;
    cursor: pointer;
    font-size: 18px;
    padding: 8px 12px;
    border-radius: 8px;
    color: #ffffff;
    transition: background 0.2s, transform 0.2s;
}

.btn-theme-toggle:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.05);
}

/* Premium Navigation Tabs */
.armstrong-ai-tabs {
    display: flex;
    background-color: var(--bg-primary);
    padding: 8px;
    gap: 8px;
    border-bottom: 1px solid var(--border-color);
}

.tab-link {
    background: none;
    border: none;
    outline: none;
    cursor: pointer;
    padding: 10px 16px;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
    border-radius: 8px;
    transition: all 0.2s ease-in-out;
}

.tab-link:hover {
    color: var(--text-primary);
    background-color: rgba(99, 102, 241, 0.08);
}

.tab-link.active {
    color: #ffffff;
    background: var(--accent-gradient);
    box-shadow: 0 4px 10px rgba(99, 102, 241, 0.25);
}

/* Contents containers */
.armstrong-ai-tab-content {
    display: none;
    padding: 24px;
    animation: fadeIn 0.3s ease;
}

.armstrong-ai-tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(4px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Chat History elements */
.chat-history-container {
    height: 380px;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 16px;
    background-color: var(--bg-primary);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.chat-bubble {
    max-width: 75%;
    padding: 12px 16px;
    border-radius: 12px;
    font-size: 14px;
    line-height: 1.5;
    word-wrap: break-word;
    animation: popIn 0.25s ease-out;
}

.chat-bubble.bot {
    background-color: var(--chat-bot-bg);
    color: var(--text-primary);
    align-self: flex-start;
    border-bottom-left-radius: 2px;
}

.chat-bubble.user {
    background-color: var(--chat-user-bg);
    color: var(--text-primary);
    align-self: flex-end;
    border-bottom-right-radius: 2px;
}

@keyframes popIn {
    from { transform: scale(0.95); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}

/* Chat Input Elements */
.chat-input-wrapper {
    display: flex;
    gap: 12px;
}

.chat-input-wrapper input {
    flex: 1;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 12px 16px;
    font-size: 14px;
    outline: none;
    background-color: var(--bg-card);
    color: var(--text-primary);
    transition: border-color 0.2s;
}

.chat-input-wrapper input:focus {
    border-color: var(--accent-color);
}

.chat-input-wrapper button {
    background: var(--accent-gradient);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 0 24px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.2s, transform 0.1s;
}

.chat-input-wrapper button:hover {
    background: var(--hover-gradient);
}

.chat-input-wrapper button:active {
    transform: scale(0.98);
}

/* Custom citations look */
.citations-box {
    margin-top: 8px;
    font-size: 12px;
    border-top: 1px solid var(--border-color);
    padding-top: 8px;
    color: var(--text-secondary);
}

.citation-link {
    display: inline-block;
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent-color);
    padding: 2px 6px;
    border-radius: 4px;
    text-decoration: none;
    margin-right: 6px;
    margin-top: 4px;
    transition: background 0.2s;
}

.citation-link:hover {
    background: rgba(99, 102, 241, 0.2);
}

/* Action forms / inputs */
.tab-search-wrapper {
    display: flex;
    gap: 12px;
    margin-bottom: 20px;
}

.tab-search-wrapper input {
    flex: 1;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 14px;
    background-color: var(--bg-card);
    color: var(--text-primary);
    outline: none;
}

.tab-search-wrapper button {
    background: var(--accent-gradient);
    color: white;
    border: none;
    border-radius: 8px;
    padding: 0 20px;
    font-weight: 500;
    cursor: pointer;
}

.search-results-container {
    min-height: 100px;
    background-color: var(--bg-primary);
    border-radius: 8px;
    padding: 16px;
    border: 1px solid var(--border-color);
}

.placeholder-text {
    text-align: center;
    color: var(--text-secondary);
    font-size: 14px;
    margin: 40px 0;
}

/* Tables styling */
.inventory-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 16px;
    font-size: 13px;
    text-align: left;
}

.inventory-table th, .inventory-table td {
    padding: 12px;
    border-bottom: 1px solid var(--border-color);
}

.inventory-table th {
    background-color: var(--bg-primary);
    font-weight: 600;
}

/* Copy and interactive helper buttons */
.btn-action-copy {
    background: none;
    border: 1px solid var(--border-color);
    padding: 4px 8px;
    font-size: 11px;
    border-radius: 4px;
    cursor: pointer;
    color: var(--text-secondary);
    float: right;
    margin-top: -6px;
    transition: all 0.2s;
}

.btn-action-copy:hover {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}