.mentor-bubble {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 65px;
    height: 65px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    z-index: 1000;
    font-size: 30px;
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
}

.mentor-bubble:hover {
    transform: scale(1.1) rotate(5deg);
    background: rgba(99, 102, 241, 0.2);
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.5);
}

.mentor-icon {
    animation: mentorFloat 3s ease-in-out infinite;
}

@keyframes mentorFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
}

.mentor-window {
    position: fixed;
    bottom: 110px;
    right: 30px;
    width: 420px;
    height: 600px;
    border-radius: 24px;
    display: flex;
    flex-direction: column;
    z-index: 1000;
    overflow: hidden;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    backdrop-filter: blur(20px);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.mentor-window.fullscreen {
    top: 20px;
    left: 20px;
    right: 20px;
    bottom: 20px;
    width: calc(100vw - 40px);
    height: calc(100vh - 40px);
    max-width: 1400px;
    max-height: 900px;
    margin: auto;
    border-radius: 20px;
}

.mentor-header {
    padding: 20px 24px;
    background: rgba(99, 102, 241, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--glass-border);
    flex-shrink: 0;
}

.mentor-status-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.mentor-name {
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 600;
    font-size: 16px;
    margin: 0;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: #22c55e;
    border-radius: 50%;
    box-shadow: 0 0 10px #22c55e;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.mentor-controls {
    display: flex;
    gap: 8px;
    align-items: center;
}

.control-btn {
    background: transparent;
    border: none;
    color: var(--text);
    cursor: pointer;
    padding: 8px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.control-btn:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: scale(1.1);
}

.close-btn {
    font-size: 20px;
    line-height: 1;
}

.mentor-messages {
    flex: 1;
    padding: 24px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 16px;
    scroll-behavior: smooth;
}

.mentor-messages::-webkit-scrollbar {
    width: 8px;
}

.mentor-messages::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 4px;
}

.mentor-messages::-webkit-scrollbar-thumb {
    background: rgba(99, 102, 241, 0.3);
    border-radius: 4px;
}

.mentor-messages::-webkit-scrollbar-thumb:hover {
    background: rgba(99, 102, 241, 0.5);
}

.message {
    padding: 14px 18px;
    border-radius: 16px;
    font-size: 15px;
    line-height: 1.6;
    max-width: 85%;
    word-wrap: break-word;
    animation: messageSlide 0.3s ease;
}

@keyframes messageSlide {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.mentor-msg {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    align-self: flex-start;
    border-bottom-left-radius: 4px;
}

.user-msg {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    align-self: flex-end;
    border-bottom-right-radius: 4px;
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.code-block {
    background: #1e1e1e;
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    margin: 12px 0;
    overflow: hidden;
    font-family: 'Monaco', 'Menlo', 'Consolas', monospace;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
}

.code-header {
    background: #2d2d2d;
    padding: 8px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.code-language {
    font-size: 12px;
    color: #8b949e;
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.5px;
}

.code-copy-btn {
    background: transparent;
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #8b949e;
    padding: 4px 12px;
    border-radius: 6px;
    font-size: 12px;
    cursor: pointer;
    transition: all 0.2s;
}

.code-copy-btn:hover {
    background: rgba(99, 102, 241, 0.2);
    border-color: var(--primary);
    color: white;
}

.code-content {
    padding: 16px;
    overflow-x: auto;
    font-size: 14px;
    line-height: 1.6;
    color: #e6edf3;
}

.code-content::-webkit-scrollbar {
    height: 8px;
}

.code-content::-webkit-scrollbar-track {
    background: #2d2d2d;
}

.code-content::-webkit-scrollbar-thumb {
    background: rgba(99, 102, 241, 0.3);
    border-radius: 4px;
}

.code-content pre {
    margin: 0;
    background: transparent;
    border: none;
    padding: 0;
}

.code-content code {
    color: #e6edf3;
    background: transparent;
    font-family: inherit;
}

.code-content .keyword {
    color: #ff7b72;
}

.code-content .string {
    color: #a5d6ff;
}

.code-content .comment {
    color: #8b949e;
}

.code-content .function {
    color: #d2a8ff;
}

.mentor-footer {
    flex-shrink: 0;
    background: rgba(15, 23, 42, 0.6);
    border-top: 1px solid var(--glass-border);
}

.mentor-limit {
    padding: 10px 20px;
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
    border-bottom: 1px solid var(--glass-border);
}

.mentor-limit strong {
    color: var(--primary);
    font-weight: 700;
}

.mentor-limit.warning strong {
    color: #fbbf24;
}

.mentor-limit.danger strong {
    color: #ef4444;
}

.mentor-input-area {
    padding: 20px;
    display: flex;
    gap: 12px;
}

.mentor-input-area input {
    flex: 1;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 12px 18px;
    color: white;
    outline: none;
    font-size: 15px;
    transition: all 0.2s;
    font-family: 'Inter', sans-serif;
}

.mentor-input-area input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.mentor-input-area input:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.mentor-input-area button {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    border-radius: 12px;
    width: 48px;
    height: 48px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
    flex-shrink: 0;
}

.mentor-input-area button:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.4);
}

.mentor-input-area button:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.typing-indicator {
    display: flex;
    gap: 4px;
    padding: 12px 16px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    width: fit-content;
    align-self: flex-start;
}

.typing-dot {
    width: 8px;
    height: 8px;
    background: var(--text-muted);
    border-radius: 50%;
    animation: typing 1.4s infinite;
}

.typing-dot:nth-child(2) {
    animation-delay: 0.2s;
}

.typing-dot:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes typing {
    0%, 60%, 100% {
        opacity: 0.3;
        transform: scale(0.8);
    }
    30% {
        opacity: 1;
        transform: scale(1);
    }
}

@media (max-width: 768px) {
    .mentor-bubble {
        bottom: 20px;
        right: 20px;
        width: 60px;
        height: 60px;
        font-size: 28px;
    }

    .mentor-window {
        bottom: 90px;
        right: 20px;
        left: 20px;
        width: auto;
        height: 500px;
    }

    .mentor-window.fullscreen {
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        width: 100%;
        height: 100%;
        max-width: none;
        max-height: none;
        border-radius: 0;
    }

    .mentor-messages {
        padding: 16px;
    }

    .message {
        max-width: 90%;
    }

    .code-content {
        font-size: 13px;
    }
}

.animate-slide-up {
    animation: slideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}