:root {
    --bg-gradient: linear-gradient(135deg, #09090b 0%, #171720 100%);
    --panel-bg: rgba(255, 255, 255, 0.03);
    --panel-border: rgba(255, 255, 255, 0.08);
    --primary: #8b5cf6;
    --primary-hover: #7c3aed;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --bot-msg-bg: rgba(30, 41, 59, 0.6);
    --user-msg-bg: linear-gradient(135deg, #6366f1, #8b5cf6);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Outfit', sans-serif;
}

body {
    background: var(--bg-gradient);
    color: var(--text-main);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    overflow: hidden;
}

.app-container {
    width: 100%;
    max-width: 900px;
    height: 95vh;
    display: flex;
    flex-direction: column;
    background: rgba(15, 23, 42, 0.4);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--panel-border);
    border-radius: 24px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    overflow: hidden;
    margin: 0 1rem;
}

/* Header */
.app-header {
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--panel-border);
    background: rgba(0, 0, 0, 0.2);
    text-align: center;
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
}

.logo i {
    color: #c084fc;
    font-size: 1.8rem;
}

.app-header h1 {
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(to right, #38bdf8, #c084fc, #f472b6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    letter-spacing: -0.5px;
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 0.25rem;
    font-weight: 400;
}

/* Chat Area */
.chat-container {
    flex: 1;
    overflow-y: auto;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    position: relative;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,0.2) transparent;
}

.chat-container::-webkit-scrollbar {
    width: 6px;
}

.chat-container::-webkit-scrollbar-thumb {
    background-color: rgba(255,255,255,0.2);
    border-radius: 10px;
}

.message {
    display: flex;
    width: 100%;
    animation: slideUp 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    opacity: 0;
    transform: translateY(20px);
}

@keyframes slideUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message-content {
    max-width: 80%;
    padding: 1rem 1.25rem;
    font-size: 1.05rem;
    line-height: 1.5;
    word-wrap: break-word;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.message-content p {
    margin-bottom: 0.75rem;
}
.message-content p:last-child {
    margin-bottom: 0;
}
.message-content pre {
    background: #0f172a;
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
    margin: 0.75rem 0;
    border: 1px solid rgba(255,255,255,0.1);
}
.message-content code {
    font-family: monospace;
    background: rgba(0,0,0,0.3);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    font-size: 0.9em;
}

.bot-message {
    justify-content: flex-start;
}

.bot-message .message-content {
    background: var(--bot-msg-bg);
    border: 1px solid var(--panel-border);
    border-radius: 20px 20px 20px 4px;
    color: #e2e8f0;
}

.user-message {
    justify-content: flex-end;
}

.user-message .message-content {
    background: var(--user-msg-bg);
    border-radius: 20px 20px 4px 20px;
    color: white;
}

/* Input Area */
.input-container {
    padding: 1.25rem 2rem;
    background: rgba(0, 0, 0, 0.2);
    border-top: 1px solid var(--panel-border);
    display: flex;
    gap: 1rem;
    align-items: flex-end;
}

.input-box {
    flex: 1;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 18px;
    padding: 0.5rem 1rem;
    transition: all 0.3s ease;
}

.input-box:focus-within {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 15px rgba(139, 92, 246, 0.2);
}

#message-input {
    width: 100%;
    background: transparent;
    border: none;
    color: white;
    font-size: 1.05rem;
    resize: none;
    outline: none;
    max-height: 150px;
    min-height: 24px;
    padding: 0.5rem 0;
}

#message-input::placeholder {
    color: rgba(255, 255, 255, 0.3);
}

.action-btn {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 1.2rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    flex-shrink: 0;
}

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

.send-btn:hover {
    background: var(--primary-hover);
    transform: scale(1.05) translateY(-2px);
    box-shadow: 0 5px 15px rgba(139, 92, 246, 0.4);
}

.send-btn:active {
    transform: scale(0.95);
}

.clear-btn {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-muted);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.clear-btn:hover {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
    border-color: rgba(239, 68, 68, 0.5);
    transform: scale(1.05);
}

/* Typing Indicator */
.typing-indicator {
    display: flex;
    gap: 0.4rem;
    padding: 1rem 1.5rem;
    background: var(--bot-msg-bg);
    border-radius: 20px 20px 20px 4px;
    width: fit-content;
    border: 1px solid var(--panel-border);
    animation: fadeIn 0.3s ease;
}

.typing-indicator span {
    width: 8px;
    height: 8px;
    background: var(--primary);
    border-radius: 50%;
    animation: bounce 1.4s infinite ease-in-out both;
}

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

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

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