:root {
    --bg-primary: #000000;
    --bg-secondary: #0a0a0a;
    --bg-tertiary: #141414;
    --text-primary: #f3f4f6;
    --text-secondary: #a1a1aa;
    --accent-color: #6366f1;
    --accent-hover: #4f46e5;
    --border-color: rgba(255, 255, 255, 0.1);
    --glass-bg: rgba(10, 10, 10, 0.7);
    --glass-border: rgba(255, 255, 255, 0.08);
    --shadow-soft: 0 4px 24px -4px rgba(0, 0, 0, 0.5);
    
    /* Code blocks */
    --code-bg: #111111;
    --code-header: #1a1a1a;
    --code-text: #e2e8f0;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    height: 100vh;
    display: flex;
    justify-content: center;
    overflow: hidden;
}

.app-container {
    width: 100%;
    max-width: 900px;
    height: 100%;
    display: flex;
    flex-direction: column;
    position: relative;
}

/* Header */
.app-header {
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    background: var(--bg-primary);
    z-index: 10;
}

.app-header h1 {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: #10b981;
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
}

/* Chat Container */
.chat-container {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    scroll-behavior: smooth;
}

/* Scrollbar styling */
.chat-container::-webkit-scrollbar {
    width: 6px;
}
.chat-container::-webkit-scrollbar-track {
    background: transparent;
}
.chat-container::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}

.welcome-message {
    text-align: center;
    margin: auto 0;
    color: var(--text-secondary);
    animation: fadeIn 0.8s ease-out;
}

.welcome-message h2 {
    color: var(--text-primary);
    font-size: 2rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

/* Messages */
.message-wrapper {
    display: flex;
    flex-direction: column;
    max-width: 85%;
    animation: slideUp 0.3s ease-out forwards;
}

.message-wrapper.user {
    align-self: flex-end;
}

.message-wrapper.ai {
    align-self: flex-start;
}

.message-bubble {
    padding: 1rem 1.25rem;
    border-radius: 18px;
    line-height: 1.6;
    font-size: 1rem;
    word-wrap: break-word;
}

.user .message-bubble {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border-bottom-right-radius: 4px;
}

.ai .message-bubble {
    background: transparent;
    color: var(--text-primary);
    padding: 0;
}

.ai .message-content {
    color: var(--text-primary);
}

.ai .message-content p {
    margin-bottom: 1rem;
}
.ai .message-content p:last-child {
    margin-bottom: 0;
}

/* Links */
.message-content a {
    color: #ffffff;
    font-weight: 700;
    text-decoration: underline dotted;
    text-underline-offset: 4px;
    transition: opacity 0.2s ease;
}

.message-content a:hover {
    opacity: 0.8;
}

/* Code Blocks Markdown Styling */
.code-block-wrapper {
    position: relative;
    margin: 1rem 0;
}

.message-content pre {
    background-color: var(--code-bg);
    border-radius: 8px;
    overflow-x: auto;
    border: 1px solid var(--border-color);
    margin: 0;
}

.copy-code-btn {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    border-radius: 6px;
    padding: 0.3rem 0.6rem;
    font-size: 0.75rem;
    font-family: 'Inter', sans-serif;
    display: flex;
    align-items: center;
    gap: 0.3rem;
    cursor: pointer;
    transition: background-color 0.2s, color 0.2s, border-color 0.2s;
    backdrop-filter: blur(4px);
}

.copy-code-btn:hover {
    background: rgba(255, 255, 255, 0.2);
    color: white;
}

.copy-code-btn.copied {
    background: rgba(16, 185, 129, 0.2);
    border-color: rgba(16, 185, 129, 0.3);
    color: #10b981;
}

.message-content code {
    font-family: 'Menlo', 'Monaco', 'Courier New', monospace;
    font-size: 0.9em;
    padding: 0.2em 0.4em;
    border-radius: 4px;
    background-color: var(--bg-tertiary);
    color: #e2e8f0;
}

.message-content pre code {
    background-color: transparent;
    padding: 1rem;
    padding-top: 2.5rem;
    display: block;
    color: #a6accd;
}

/* API Endpoints Cards */
.endpoints-container {
    margin-top: 1.5rem;
    display: grid;
    gap: 1rem;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.endpoint-card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: 12px;
    padding: 1.25rem;
    box-shadow: var(--shadow-soft);
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
    cursor: pointer;
    overflow: hidden;
}

.endpoint-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0,0,0,0.6);
    border-color: rgba(255, 255, 255, 0.2);
}

.endpoint-header {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.method-badge {
    font-size: 0.7rem;
    font-weight: 700;
    padding: 0.2rem 0.5rem;
    border-radius: 4px;
    letter-spacing: 0.5px;
}
.method-badge.post { background: rgba(16, 185, 129, 0.15); color: #34d399; }
.method-badge.get { background: rgba(59, 130, 246, 0.15); color: #60a5fa; }
.method-badge.put { background: rgba(245, 158, 11, 0.15); color: #fbbf24; }
.method-badge.delete { background: rgba(239, 68, 68, 0.15); color: #f87171; }
.method-badge.default { background: rgba(156, 163, 175, 0.15); color: #d1d5db; }

.endpoint-url {
    font-family: monospace;
    font-size: 0.85rem;
    color: var(--text-secondary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.endpoint-description {
    font-size: 0.9rem;
    color: var(--text-primary);
    margin-bottom: 1rem;
    line-height: 1.5;
}

.endpoint-curl {
    background: #000;
    border-radius: 6px;
    padding: 0.75rem;
    font-family: monospace;
    font-size: 0.75rem;
    color: #a6accd;
    overflow-x: auto;
    border: 1px solid rgba(255, 255, 255, 0.05);
}
.endpoint-curl::-webkit-scrollbar {
    height: 4px;
}
.endpoint-curl::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.2);
}

/* Loading Indicator */
.loading-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 0;
    color: var(--text-secondary);
    animation: slideUp 0.3s ease-out forwards;
}

.dot {
    width: 6px;
    height: 6px;
    background-color: var(--text-secondary);
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out both;
}

.dot:nth-child(1) { animation-delay: -0.32s; }
.dot:nth-child(2) { animation-delay: -0.16s; }

/* Input Area */
.input-container {
    padding: 1rem 2rem 2rem;
    background: linear-gradient(to top, var(--bg-primary) 80%, transparent);
    z-index: 10;
}

.chat-form {
    position: relative;
    max-width: 100%;
}

.input-wrapper {
    position: relative;
    display: flex;
    align-items: flex-end;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 0.5rem 1rem;
    box-shadow: var(--shadow-soft);
    transition: border-color 0.3s, box-shadow 0.3s;
}

.input-wrapper:focus-within {
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(99, 102, 241, 0.2);
}

textarea {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    line-height: 1.5;
    padding: 0.5rem 0;
    max-height: 150px;
    resize: none;
    outline: none;
    overflow-y: auto;
}

textarea::placeholder {
    color: var(--text-secondary);
}

textarea::-webkit-scrollbar {
    width: 4px;
}

.send-btn {
    background: var(--accent-color);
    color: white;
    border: none;
    border-radius: 50%;
    width: 36px;
    height: 36px;
    display: flex;
    justify-content: center;
    align-items: center;
    cursor: pointer;
    margin-bottom: 0.25rem;
    margin-left: 0.5rem;
    transition: background-color 0.2s, transform 0.1s;
}

.send-btn:hover:not(:disabled) {
    background: var(--accent-hover);
    transform: scale(1.05);
}

.send-btn:active:not(:disabled) {
    transform: scale(0.95);
}

.send-btn:disabled {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    cursor: not-allowed;
    opacity: 0.7;
}

.footer-text {
    text-align: center;
    font-size: 0.75rem;
    color: var(--text-secondary);
    margin-top: 1rem;
}

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

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes bounce {
    0%, 80%, 100% { transform: scale(0); }
    40% { transform: scale(1); }
}

/* Responsive */
@media (max-width: 768px) {
    .app-container {
        width: 100%;
        height: 100%;
    }
    .chat-container {
        padding: 1rem;
    }
    .input-container {
        padding: 1rem;
    }
    .message-wrapper {
        max-width: 90%;
    }
}